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https://github.com/iddoeldor/frida-snippets
Hand-crafted Frida examples
https://github.com/iddoeldor/frida-snippets
aarch64 android arm64 dynamic-analysis frida hooking instrumentation ios java java-native-interface mobile-security objective-c reverse-engineering runtime-analysis
Last synced: 6 days ago
JSON representation
Hand-crafted Frida examples
- Host: GitHub
- URL: https://github.com/iddoeldor/frida-snippets
- Owner: iddoeldor
- Created: 2018-04-23T15:50:13.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2024-03-03T14:49:27.000Z (9 months ago)
- Last Synced: 2024-11-21T04:11:52.264Z (21 days ago)
- Topics: aarch64, android, arm64, dynamic-analysis, frida, hooking, instrumentation, ios, java, java-native-interface, mobile-security, objective-c, reverse-engineering, runtime-analysis
- Language: JavaScript
- Homepage:
- Size: 6.67 MB
- Stars: 2,299
- Watchers: 76
- Forks: 418
- Open Issues: 5
-
Metadata Files:
- Readme: README.md
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README
 & also output examples
## Table of Contents
Native
* [`Load C/C++ module`](#load-cpp-module)
* [`One time watchpoint`](#one-time-watchpoint)
* [`Socket activity`](#socket-activity)
* [`Intercept open`](#intercept-open)
* [`Execute shell command`](#execute-shell-command)
* [`List modules`](#list-modules)
* [`Log SQLite query`](#log-sqlite-query)
* [`Log method arguments`](#log-method-arguments)
* [`Intercept entire module`](#intercept-entire-module)
* [`Dump memory segments`](#dump-memory-segments)
* [`Memory scan`](#memory-scan)
* [`Stalker`](#stalker)
* [`Cpp Demangler`](#cpp-demangler)
* [`Early hook`](#early-hook)
Android
* [`Binder transactions`](#binder-transactions)
* [`Get system property`](#system-property-get)
* [`Reveal manually registered native symbols`](#reveal-native-methods)
* [`Enumerate loaded classes`](#enumerate-loaded-classes)
* [`Class description`](#class-description)
* [`Turn WiFi off`](#turn-wifi-off)
* [`Set proxy`](#set-proxy)
* [`Get IMEI`](#get-imei)
* [`Hook io InputStream`](#hook-io-inputstream)
* [`Android make Toast`](#android-make-toast)
* [`Await for specific module to load`](#await-for-condition)
* [`Webview URLS`](#webview-urls)
* [`Print all runtime strings & stacktrace`](#print-runtime-strings)
* [`Print shared preferences updates`](#Print-shared-preferences-updates)
* [`String comparison`](#string-comparison)
* [`Hook JNI by address`](#hook-jni-by-address)
* [`Hook constructor`](#hook-constructor)
* [`Hook Java reflection`](#hook-refelaction)
* [`Trace class`](#trace-class)
* [`Hooking Unity3d`](https://github.com/iddoeldor/mplus)
* [`Get Android ID`](#get-android-id)
* [`Change location`](#change-location)
* [`Bypass FLAG_SECURE`](#bypass-flag_secure)
* [`Shared Preferences update`](#shared-preferences-update)
* [`Hook all method overloads`](#hook-overloads)
* [`Register broadcast receiver`](#register-broadcast-receiver)
* [`Increase step count`](#increase-step-count)
* [`list classes implements interface with class loaders`](#list-classes-implements-interface)
* File system access hook `$ frida --codeshare FrenchYeti/android-file-system-access-hook -f com.example.app --no-pause`
* How to remove/disable java hooks ? Assign `null` to the `implementation` property.
iOS
* [`OS Log`](#os-log)
* [`iOS alert box`](#ios-alert-box)
* [`File access`](#file-access)
* [`Observe class`](#observe-class)
* [`Find application UUID`](#find-ios-application-uuid)
* [`Extract cookies`](#extract-cookies)
* [`Describe class members`](#describe-class-members)
* [`Class hierarchy`](#class-hierarchy)
* [`Hook refelaction`](#hook-refelaction)
* [`Device properties`](#device-properties)
* [`Take screenshot`](#take-screenshot)
* [`Log SSH commands`](#log-ssh-commands)
Windows
Sublime snippets
{
"scope": "source.js",
"completions": [
{"trigger": "fridainterceptor", "contents": "Interceptor.attach(\n ptr,\n {\n onEnter:function(args) {\n\n },\n onLeave: function(retval) {\n\n }\n }\n)"},
{"trigger": "fridaperform", "contents": "function main(){\n console.log('main()');\n}\n\nconsole.log('script loaded');\nJava.perform(main);"},
{"trigger": "fridause", "contents": "var kls = Java.use('kls');"},
{"trigger": "fridahex", "contents": "hexdump(\n ptr,\n {\n offset: 0,\n length: ptr_size\n }\n);" },
{"trigger": "fridabacktrace", "contents": "console.log('called from:\\n' +\n Thread.backtrace(this.context, Backtracer.ACCURATE)\n .map(DebugSymbol.fromAddress).join('\\n') + '\\n'\n);"},
{"trigger": "fridamods", "contents": "var mods = Process.enumerateModules().filter(function(mod){\n return mod.name.includes(\"\");\n});"},
{"trigger": "fridaexport", "contents": "Module.findExportByName(null, \"\");"},
{"trigger": "fridabase", "contents": "Module.findBaseAddress(name);"},
{"trigger": "fridaoverload", "contents": "kls.method_name.overload().implementation=function(){}"}
]
}
Vim snippets
To list abbreviations `:ab`
Expand by writing `key` and ``
* Add to `~/.vimrc`
```
ab fridaintercept Interceptor.attach(ptr, {onEnter: function(args) {},onLeave: function(retval) {}})
ab fridabacktrace console.warn(Thread.backtrace(this.context, Backtracer.ACCURATE).map(DebugSymbol.fromAddress).join('\n'));F(3;
ab fridadescribe console.log(Object.getOwnPropertyNames(Java.use('$').__proto__).join('\n\t'))F$
```
JEB
Java method hook generator using keyboard shortcut
1. `curl -o ~/$JEB$/scripts/FridaCodeGenerator.py https://raw.githubusercontent.com/iddoeldor/frida-snippets/master/scripts/FridaCodeGenerator.py`
2. Place cursor at Java method's signature
3. Press `Ctrl+Shift+Z`
4. Code is copied to system clipboard (using `xclip`)
#### Fetch SSL keys
```js
var keylog_callback = new NativeCallback((ssl, line) => {
send(Memory.readCString(line));
}, 'void', ['pointer', 'pointer']);
if (ObjC.available) {
var CALLBACK_OFFSET = 0x2A8
if (Memory.readDouble(Module.findExportByName('CoreFoundation', 'kCFCoreFoundationVersionNumber')) >= 1751.108) {
CALLBACK_OFFSET = 0x2B8
}
Interceptor.attach(Module.findExportByName('libboringssl.dylib', 'SSL_CTX_set_info_callback'), {
onEnter(args) {
ptr(args[0]).add(CALLBACK_OFFSET).writePointer(keylog_callback)
}
})
} else if (Java.available) {
var set_keylog_callback = new NativeFunction(Module.findExportByName('libssl.so', 'SSL_CTX_set_keylog_callback'), 'void', ['pointer', 'pointer']);
Interceptor.attach(Module.findExportByName('libssl.so', 'SSL_CTX_new'), {
onLeave(retval) {
set_keylog_callback(retval, keylog_callback)
}
})
}
```
[⬆ Back to top](#table-of-contents)
#### Load CPP module
```cpp
#include
#include
extern "C" {
void* create_stdstr(char *data, int size) {
std::string* s = new std::string();
(*s).assign(data, size);
return s;
}
}
```
```sh
$ ./android-ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android21-clang++ a.cpp -o a -shared -static-libstdc++ && adb push a /data/local/tmp/a
```
```js
[device]->
function readStdString(str) {
if ((str.readU8() & 1) === 1) { // size LSB (=1) indicates if it's a long string
return str.add(2 * Process.pointerSize).readPointer().readUtf8String();
}
return str.add(1).readUtf8String();
}
[device]-> Module.load('/data/local/tmp/a');
[device]-> var fp_create_stdstr = Module.findExportByName('a', 'create_stdstr');
[device]-> var createStdString = new NativeFunction(fp_create_stdstr, 'pointer', ['pointer', 'int']);
[device]-> var stdstr1 = createStdString(Memory.allocUtf8String("abcd"), 3);
"0x07691234567"
[device]-> readStdString(stdstr1);
"abc"
```
#### Load C module
* https://frida.re/docs/javascript-api/#cmodule
* https://frida.re/news/2019/09/18/frida-12-7-released/
```sh
$ ./aarch64-linux-android21-clang /tmp/b.c -o /tmp/a -shared ../sysroot/usr/lib/aarch64-linux-android/21/liblog.so && adb push /tmp/a /data/local/tmp/a
```
```c
#include
#include
#include
#define TAG "TEST1"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, TAG, __VA_ARGS__)
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, TAG, __VA_ARGS__)
void test(void) {
FILE* fp = popen("ls -l /sdcard 2>&1", "r");
if (fp == NULL)
LOGE("executing cmd failed");
char b[256];
while (fgets(b, sizeof(b), fp) != NULL) {
LOGI("%s", b);
}
pclose(fp);
}
```
```sh
$ frida -Uf com.app --no-pause --enable-jit -e "Module.load('/data/local/tmp/a')"
[ ] -> new NativeFunction(Module.findExportByName('a', 'test'), 'void', [])()
```
[⬆ Back to top](#table-of-contents)
#### One time watchpoint
Intercept `funcPtr` & log who read/write to `x2` via removing permissions w/ `mprotect`.
```js
Process.setExceptionHandler(function(exp) {
console.warn(JSON.stringify(Object.assign(exp, { _lr: DebugSymbol.fromAddress(exp.context.lr), _pc: DebugSymbol.fromAddress(exp.context.pc) }), null, 2));
Memory.protect(exp.memory.address, Process.pointerSize, 'rw-');
// can also use `new NativeFunction(Module.findExportByName(null, 'mprotect'), 'int', ['pointer', 'uint', 'int'])(parseInt(this.context.x2), 2, 0)`
return true; // goto PC
});
Interceptor.attach(funcPtr, {
onEnter: function (args) {
console.log('onEnter', JSON.stringify({
x2: this.context.x2,
mprotect_ret: Memory.protect(this.context.x2, 2, '---'),
errno: this.errno
}, null, 2));
},
onLeave: function (retval) {
console.log('onLeave');
}
});
```
Output example
```
[iOS Device::com.app]-> onEnter {
"x2": "0x1c145c6e0",
"mprotect_ret": true,
"errno": 2
}
{
"type": "access-violation",
"address": "0x1853b0198",
"memory": {
"operation": "read",
"address": "0x1c145c6e0"
},
"context": {
"lr": "0x100453358",
"fp": "0x16fb2e860",
"x28": "0x0",
"x27": "0x0",
"x26": "0x104312600",
"x25": "0x0",
"x24": "0x0",
"x23": "0x0",
"x22": "0x0",
"x21": "0xb000000422bbda03",
"x20": "0x1c4a22560",
"x19": "0xb000000422bbda03",
"x18": "0x0",
"x17": "0x100d25290",
"x16": "0x1853b0190",
"x15": "0x0",
"x14": "0x5",
"x13": "0xe5a1c4119597",
"x12": "0x10e80ca30",
"x11": "0x180000003f",
"x10": "0x10e80ca00",
"x9": "0x1020ad7c3",
"x8": "0x0",
"x7": "0x0",
"x6": "0x0",
"x5": "0x0",
"x4": "0xb000000422bbda03",
"x3": "0x1c4a22560",
"x2": "0x1c145c6e0",
"x1": "0x1020ad7c3",
"x0": "0x1c145c6e0",
"sp": "0x16fb2e790",
"pc": "0x1853b0198"
},
"nativeContext": "0x16fc42b24"
}
onLeave
```
[⬆ Back to top](#table-of-contents)
#### Socket activity
```js
Process
.getModuleByName({ linux: 'libc.so', darwin: 'libSystem.B.dylib', windows: 'ws2_32.dll' }[Process.platform])
.enumerateExports().filter(ex => ex.type === 'function' && ['connect', 'recv', 'send', 'read', 'write'].some(prefix => ex.name.indexOf(prefix) === 0))
.forEach(ex => {
Interceptor.attach(ex.address, {
onEnter: function (args) {
var fd = args[0].toInt32();
var socktype = Socket.type(fd);
if (socktype !== 'tcp' && socktype !== 'tcp6')
return;
var address = Socket.peerAddress(fd);
if (address === null)
return;
console.log(fd, ex.name, address.ip + ':' + address.port);
}
})
})
```
Output example
Android example
```sh
# wrap the script above inside Java.perform
$ frida -Uf com.example.app -l script.js --no-pause
[Android Model-X::com.example.app]-> 117 write 5.0.2.1:5242
117 read 5.0.2.1:5242
135 write 5.0.2.1:4244
135 read 5.0.2.1:4244
135 read 5.0.2.1:4244
```
[⬆ Back to top](#table-of-contents)
#### Intercept Open
An example for intercepting `libc#open` & logging backtrace if specific file was opened.
```js
Interceptor.attach(Module.findExportByName("/system/lib/libc.so", "open"), {
onEnter: function(args) {
this.flag = false;
var filename = Memory.readCString(ptr(args[0]));
console.log('filename =', filename)
if (filename.endsWith(".xml")) {
this.flag = true;
var backtrace = Thread.backtrace(this.context, Backtracer.ACCURATE).map(DebugSymbol.fromAddress).join("\n\t");
console.log("file name [ " + Memory.readCString(ptr(args[0])) + " ]\nBacktrace:" + backtrace);
}
},
onLeave: function(retval) {
if (this.flag) // passed from onEnter
console.warn("\nretval: " + retval);
}
});
```
```js
var fds = {}; // for f in /proc/`pidof $APP`/fd/*; do echo $f': 'readlink $f; done
Interceptor.attach(Module.findExportByName(null, 'open'), {
onEnter: function (args) {
var fname = args[0].readCString();
if (fname.endsWith('.jar')) {
this.flag = true;
this.fname = fname;
}
},
onLeave: function (retval) {
if (this.flag) {
fds[retval] = this.fname;
}
}
});
['read', 'pread', 'readv'].forEach(fnc => {
Interceptor.attach(Module.findExportByName(null, fnc), {
onEnter: function (args) {
var fd = args[0];
if (fd in fds)
console.log(`${fnc}: ${fds[fd]}
\t${Thread.backtrace(this.context, Backtracer.ACCURATE).map(DebugSymbol.fromAddress).join('\n\t')}`);
}
});
});
```
Output example
Intecepting `com.android.chrome`
[⬆ Back to top](#table-of-contents)
#### Execute shell command
```python
import frida
from frida_tools.application import Reactor
import threading
import click
class Shell(object):
def __init__(self, argv, env):
self._stop_requested = threading.Event()
self._reactor = Reactor(run_until_return=lambda reactor: self._stop_requested.wait())
self._device = frida.get_usb_device()
self._sessions = set()
self._device.on("child-added", lambda child: self._reactor.schedule(lambda: self._on_child_added(child)))
self._device.on("child-removed", lambda child: self._reactor.schedule(lambda: self._on_child_removed(child)))
self._device.on("output", lambda pid, fd, data: self._reactor.schedule(lambda: self._on_output(pid, fd, data)))
self.argv = argv
self.env = env
self.output = [] # stdout will pushed into array
def exec(self):
self._reactor.schedule(lambda: self._start())
self._reactor.run()
def _start(self):
click.secho("✔ spawn(argv={})".format(self.argv), fg='green', dim=True)
pid = self._device.spawn(self.argv, env=self.env, stdio='pipe')
self._instrument(pid)
def _stop_if_idle(self):
if len(self._sessions) == 0:
self._stop_requested.set()
def _instrument(self, pid):
click.secho("✔ attach(pid={})".format(pid), fg='green', dim=True)
session = self._device.attach(pid)
session.on("detached", lambda reason: self._reactor.schedule(lambda: self._on_detached(pid, session, reason)))
click.secho("✔ enable_child_gating()", fg='green', dim=True)
session.enable_child_gating()
# print("✔ resume(pid={})".format(pid))
self._device.resume(pid)
self._sessions.add(session)
def _on_child_added(self, child):
click.secho("⚡ child_added: {}".format(child), fg='green', dim=True)
self._instrument(child.pid)
@staticmethod
def _on_child_removed(child):
click.secho("⚡ child_removed: {}".format(child), fg='green', dim=True)
def _on_output(self, pid, fd, data):
# print("⚡ output: pid={}, fd={}, data={}".format(pid, fd, repr(data)))
# fd=0 (input) fd=1(stdout) fd=2(stderr)
if fd != 2:
self.output.append(data)
def _on_detached(self, pid, session, reason):
click.secho("⚡ detached: pid={}, reason='{}'".format(pid, reason), fg='green', dim=True)
self._sessions.remove(session)
self._reactor.schedule(self._stop_if_idle, delay=0.5)
@staticmethod
def _on_message(pid, message):
click.secho("⚡ message: pid={}, payload={}".format(pid, message), fg='green', dim=True)
```
Usage example
List directory contents:
```python
def ls(folder):
cmd = Shell(['/bin/sh', '-c', 'ls -la ' + folder], None)
cmd.exec()
for chunk in cmd.output:
print(chunk.strip().decode())
```
Pull binary from iOS
```python
cmd = Shell(['/bin/sh', '-c', 'cat /System/Library/PrivateFrameworks/Example.framework/example'], None)
cmd.exec()
with open('/tmp/example', 'wb+') as f:
f.writelines(cmd.output)
# $ file /tmp/example
# /tmp/example: Mach-O 64-bit 64-bit architecture=12 executable
```
[⬆ Back to top](#table-of-contents)
#### List modules
```js
Process.enumerateModulesSync()
.filter(function(m){ return m['path'].toLowerCase().indexOf('app') !=-1 ; })
.forEach(function(m) {
console.log(JSON.stringify(m, null, ' '));
// to list exports use Module.enumerateExportsSync(m.name)
});
```
List modules & exports
```js
sudo frida Process --no-pause --eval 'var x={};Process.enumerateModulesSync().forEach(function(m){x[m.name] = Module.enumerateExportsSync(m.name)});x' -q | less +F
```
Output example
```js
{
"name": "app_process64",
"base": "0x6313a1c000",
"size": 40960,
"path": "/system/bin/app_process64"
}
{
"name": "libappfuse.so",
"base": "0x749ab96000",
"size": 53248,
"path": "/system/lib64/libappfuse.so"
}
{
"name": "[email protected]",
"base": "0x749b448000",
"size": 90112,
"path": "/system/lib64/[email protected]"
}
{
"name": "[email protected]",
"base": "0x749ac9e000",
"size": 94208,
"path": "/system/lib64/[email protected]"
}
{
"name": "[email protected]",
"base": "0x74981e0000",
"size": 98304,
"path": "/system/lib64/[email protected]"
}
{
"name": "[email protected]",
"base": "0x73fb4cc000",
"size": 40960,
"path": "/vendor/lib64/hw/[email protected]"
}
{
"name": "[email protected]",
"base": "0x73fb51f000",
"size": 90112,
"path": "/system/lib64/vndk-sp-29/[email protected]"
}
{
"name": "[email protected]",
"base": "0x73fb542000",
"size": 94208,
"path": "/system/lib64/vndk-sp-29/[email protected]"
}
{
"name": "base.odex",
"base": "0x73ab4cd000",
"size": 16965632,
"path": "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/oat/arm64/base.odex"
}
{
"name": "libfrida-gadget.so",
"base": "0x73a2c05000",
"size": 22876160,
"path": "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libfrida-gadget.so"
}
{
"name": "libmain.so",
"base": "0x73fb894000",
"size": 73728,
"path": "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libmain.so"
}
{
"name": "libunity.so",
"base": "0x739bf88000",
"size": 24461312,
"path": "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libunity.so"
}
{
"name": "libil2cpp.so",
"base": "0x7396fe6000",
"size": 25272320,
"path": "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libil2cpp.so"
}
{
"name": "DynamiteLoader.odex",
"base": "0x73b7ee4000",
"size": 376832,
"path": "/data/user_de/0/com.google.android.gms/app_chimera/m/00000278/oat/arm64/DynamiteLoader.odex"
}
{
"name": "base.odex",
"base": "0x72f2ee3000",
"size": 166838272,
"path": "/data/app/com.google.android.gms-j7RpxBsNAd3ttAYEdp2ahg==/oat/arm64/base.odex"
}
{
"name": "base.odex",
"base": "0x7396e6d000",
"size": 28672,
"path": "/data/app/com.google.android.trichromelibrary_432418133-X7Kc2Mqi-VXkY12N59kGug==/oat/arm64/base.odex"
}
{
"name": "base.odex",
"base": "0x724f15e000",
"size": 13225984,
"path": "/data/app/com.google.android.webview-w6i6OBFZ7T_wK4W4TpDAiQ==/oat/arm64/base.odex"
}
{
"name": "libmonochrome.so",
"base": "0x73b8592000",
"size": 76673024,
"path": "/data/app/com.google.android.webview-w6i6OBFZ7T_wK4W4TpDAiQ==/base.apk!/lib/arm64-v8a/libmonochrome.so"
}
{
"name": "libnativeNoodleNews.so",
"base": "0x723add3000",
"size": 962560,
"path": "/data/app/com.noodlecake.altosadventure-O2YLuwCOq7LbWSkRHkRLcg==/lib/arm64/libnativeNoodleNews.so"
}
{
"name": "libconscrypt_gmscore_jni.so",
"base": "0x7206629000",
"size": 1130496,
"path": "/data/app/com.google.android.gms-j7RpxBsNAd3ttAYEdp2ahg==/base.apk!/lib/arm64-v8a/libconscrypt_gmscore_jni.so"
}
```
[⬆ Back to top](#table-of-contents)
#### Log SQLite query
```js
Interceptor.attach(Module.findExportByName('libsqlite.so', 'sqlite3_prepare16_v2'), {
onEnter: function(args) {
console.log('DB: ' + Memory.readUtf16String(args[0]) + '\tSQL: ' + Memory.readUtf16String(args[1]));
}
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### system property get
```js
Interceptor.attach(Module.findExportByName(null, '__system_property_get'), {
onEnter: function (args) {
this._name = args[0].readCString();
this._value = args[1];
},
onLeave: function (retval) {
console.log(JSON.stringify({
result_length: retval,
name: this._name,
val: this._value.readCString()
}));
}
});
```
Output example
```sh
{"result_length":"0x0","name":"ro.kernel.android.tracing","val":""}
{"result_length":"0x0","name":"ro.config.hw_log","val":""}
{"result_length":"0x0","name":"ro.config.hw_module_log","val":""}
{"result_length":"0x1","name":"ro.debuggable","val":"0"}
{"result_length":"0x1","name":"persist.sys.huawei.debug.on","val":"0"}
{"result_length":"0x1","name":"ro.logsystem.usertype","val":"6"}
{"result_length":"0x6","name":"ro.board.platform","val":"hi6250"}
{"result_length":"0x4","name":"persist.sys.enable_iaware","val":"true"}
{"result_length":"0x1","name":"persist.sys.cpuset.enable","val":"1"}
{"result_length":"0x4","name":"persist.sys.cpuset.subswitch","val":"1272"}
{"result_length":"0x4","name":"persist.sys.boost.durationms","val":"1000"}
{"result_length":"0x4","name":"persist.sys.boost.isbigcore","val":"true"}
{"result_length":"0x7","name":"persist.sys.boost.freqmin.b","val":"1805000"}
{"result_length":"0x4","name":"persist.sys.boost.ipapower","val":"3500"}
{"result_length":"0x0","name":"persist.sys.boost.skipframe","val":""}
{"result_length":"0x0","name":"persist.sys.boost.byeachfling","val":""}
{"result_length":"0x1","name":"debug.force_rtl","val":"0"}
{"result_length":"0x0","name":"ro.hardware.gralloc","val":""}
{"result_length":"0x6","name":"ro.hardware","val":"hi6250"}
{"result_length":"0x0","name":"ro.kernel.qemu","val":""}
{"result_length":"0x0","name":"ro.config.hw_force_rotation","val":""}
{"result_length":"0x0","name":"persist.fb_auto_alloc","val":""}
{"result_length":"0x0","name":"ro.config.hw_lock_res_whitelist","val":""}
{"result_length":"0x3","name":"ro.sf.lcd_density","val":"480"}
{"result_length":"0x0","name":"persist.sys.dpi","val":""}
{"result_length":"0x0","name":"persist.sys.rog.width","val":""}
{"result_length":"0x4","name":"dalvik.vm.usejitprofiles","val":"true"}
{"result_length":"0x1","name":"debug.atrace.tags.enableflags","val":"0"}
{"result_length":"0x1","name":"ro.debuggable","val":"0"}
{"result_length":"0x1","name":"debug.force_rtl","val":"0"}
{"result_length":"0x0","name":"ro.config.hw_lock_res_whitelist","val":""}
....
```
[⬆ Back to top](#table-of-contents)
#### Binder transactions
```js
var LAST_MSG = '';
Java.perform(() => {
Interceptor.attach(Module.findExportByName('libbinder.so', 'ioctl'), {
onEnter: function(args) {
var binder_write_read_ptr = args[2];
if (args[1] == 0xC0306201) { // BINDER_WRITE_READ
var binder_write_read = {
// 'fd': args[0].toInt32(),
'write_size': binder_write_read_ptr.readU64(),
'write_consumed': binder_write_read_ptr.add(Process.pointerSize).readU64(),
'write_buffer': binder_write_read_ptr.add(Process.pointerSize * 2).readPointer(),
}
if (binder_write_read.write_size > 0) {
var ptr = binder_write_read.write_buffer.add(binder_write_read.write_consumed + 4);
switch (binder_write_read.write_buffer.readU32() & 0xff) {
case 0: // BC_TRANSACTION
case 1: // BC_REPLY
var binder_transaction_data = {
'target': {
'handle': ptr.readU32(),
'ptr': ptr.readPointer()
},
'cookie': ptr.add(8).readPointer(),
'code': ptr.add(16).readU32(),
'flags': ptr.add(20).readU32(),
'sender_pid': ptr.add(24).readS32(),
'sender_euid': ptr.add(28).readU32(),
'data_size': ptr.add(32).readU64(),
'offsets_size': ptr.add(40).readU64(),
'data': {
'ptr': {
'buffer': ptr.add(48).readPointer(),
'offsets': ptr.add(56).readPointer()
},
'buf': ptr.add(48).readByteArray(8)
}
}
var _log = hexdump(binder_transaction_data.data.ptr.buffer, { length: binder_transaction_data.data_size, ansi: true });
if (LAST_MSG.toString() != _log.toString()) {
console.log(JSON.stringify(binder_transaction_data, null, 2));
console.log(_log);
}
break;
}
}
}
}
});
});
```
Output example
```sh
{
"target": {
"handle": 16,
"ptr": "0x10"
},
"cookie": "0x0",
"code": 22,
"flags": 16,
"sender_pid": 0,
"sender_euid": 0,
"data_size": "68",
"offsets_size": "0",
"data": {
"ptr": {
"buffer": "0x78dce3dcf0",
"offsets": "0x0"
},
"buf": {}
}
}
0 1 2 3 4 5 6 7 8 9 A B C D E F 0123456789ABCDEF
78dce3dcf0 04 00 40 01 1d 00 00 00 61 00 6e 00 64 00 72 00 [email protected].
78dce3dd00 6f 00 69 00 64 00 2e 00 6e 00 65 00 74 00 2e 00 o.i.d...n.e.t...
78dce3dd10 77 00 69 00 66 00 69 00 2e 00 49 00 57 00 69 00 w.i.f.i...I.W.i.
78dce3dd20 66 00 69 00 4d 00 61 00 6e 00 61 00 67 00 65 00 f.i.M.a.n.a.g.e.
78dce3dd30 72 00 00 00 r...
```
[⬆ Back to top](#table-of-contents)
#### Reveal native methods
`registerNativeMethods` can be used as anti reversing technique to the native .so libraries, e.g. hiding the symbols as much as possible, obfuscating the exported symbols and eventually adding some protection over the JNI bridge.
[source](https://stackoverflow.com/questions/51811348/find-manually-registered-obfuscated-native-function-address)
```js
var RevealNativeMethods = function() {
var pSize = Process.pointerSize;
var env = Java.vm.getEnv();
var RegisterNatives = 215, FindClassIndex = 6; // search "215" @ https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html
var jclassAddress2NameMap = {};
function getNativeAddress(idx) {
return env.handle.readPointer().add(idx * pSize).readPointer();
}
// intercepting FindClass to populate Map
Interceptor.attach(getNativeAddress(FindClassIndex), {
onEnter: function(args) {
jclassAddress2NameMap[args[0]] = args[1].readCString();
}
});
// RegisterNative(jClass*, .., JNINativeMethod *methods[nMethods], uint nMethods) // https://android.googlesource.com/platform/libnativehelper/+/master/include_jni/jni.h#977
Interceptor.attach(getNativeAddress(RegisterNatives), {
onEnter: function(args) {
for (var i = 0, nMethods = parseInt(args[3]); i < nMethods; i++) {
/*
https://android.googlesource.com/platform/libnativehelper/+/master/include_jni/jni.h#129
typedef struct {
const char* name;
const char* signature;
void* fnPtr;
} JNINativeMethod;
*/
var structSize = pSize * 3; // = sizeof(JNINativeMethod)
var methodsPtr = ptr(args[2]);
var signature = methodsPtr.add(i * structSize + pSize).readPointer();
var fnPtr = methodsPtr.add(i * structSize + (pSize * 2)).readPointer(); // void* fnPtr
var jClass = jclassAddress2NameMap[args[0]].split('/');
var methodName = methodsPtr.add(i * structSize).readPointer().readCString();
console.log('\x1b[3' + '6;01' + 'm', JSON.stringify({
module: DebugSymbol.fromAddress(fnPtr)['moduleName'], // https://www.frida.re/docs/javascript-api/#debugsymbol
package: jClass.slice(0, -1).join('.'),
class: jClass[jClass.length - 1],
method: methodName, // methodsPtr.readPointer().readCString(), // char* name
signature: signature.readCString(), // char* signature TODO Java bytecode signature parser { Z: 'boolean', B: 'byte', C: 'char', S: 'short', I: 'int', J: 'long', F: 'float', D: 'double', L: 'fully-qualified-class;', '[': 'array' } https://github.com/skylot/jadx/blob/master/jadx-core/src/main/java/jadx/core/dex/nodes/parser/SignatureParser.java
address: fnPtr
}), '\x1b[39;49;00m');
}
}
});
}
Java.perform(RevealNativeMethods);
```
@OldVersion
```js
var fIntercepted = false;
function revealNativeMethods() {
if (fIntercepted === true) {
return;
}
var jclassAddress2NameMap = {};
var androidRunTimeSharedLibrary = "libart.so"; // may change between devices
Module.enumerateSymbolsSync(androidRunTimeSharedLibrary).forEach(function(symbol){
switch (symbol.name) {
case "_ZN3art3JNI21RegisterNativeMethodsEP7_JNIEnvP7_jclassPK15JNINativeMethodib":
/*
$ c++filt "_ZN3art3JNI21RegisterNativeMethodsEP7_JNIEnvP7_jclassPK15JNINativeMethodib"
art::JNI::RegisterNativeMethods(_JNIEnv*, _jclass*, JNINativeMethod const*, int, bool)
*/
var RegisterNativeMethodsPtr = symbol.address;
console.log("RegisterNativeMethods is at " + RegisterNativeMethodsPtr);
Interceptor.attach(RegisterNativeMethodsPtr, {
onEnter: function(args) {
var methodsPtr = ptr(args[2]);
var methodCount = parseInt(args[3]);
for (var i = 0; i < methodCount; i++) {
var pSize = Process.pointerSize;
/*
https://android.googlesource.com/platform/libnativehelper/+/master/include_jni/jni.h#129
typedef struct {
const char* name;
const char* signature;
void* fnPtr;
} JNINativeMethod;
*/
var structSize = pSize * 3; // JNINativeMethod contains 3 pointers
var namePtr = Memory.readPointer(methodsPtr.add(i * structSize));
var sigPtr = Memory.readPointer(methodsPtr.add(i * structSize + pSize));
var fnPtrPtr = Memory.readPointer(methodsPtr.add(i * structSize + (pSize * 2)));
// output schema: className#methodName(arguments)returnVal@address
console.log(
// package & class, replacing forward slash with dot for convenience
jclassAddress2NameMap[args[0]].replace(/\//g, '.') +
'#' + Memory.readCString(namePtr) + // method
Memory.readCString(sigPtr) + // signature (arguments & return type)
'@' + fnPtrPtr // C side address
);
}
},
onLeave: function (ignoredReturnValue) {}
});
break;
case "_ZN3art3JNI9FindClassEP7_JNIEnvPKc": // art::JNI::FindClass
Interceptor.attach(symbol.address, {
onEnter: function(args) {
if (args[1] != null) {
jclassAddress2NameMap[args[0]] = Memory.readCString(args[1]);
}
},
onLeave: function (ignoredReturnValue) {}
});
break;
}
});
fIntercepted = true;
}
Java.perform(revealNativeMethods);
```
Output example
```sh
$ frida -Uf com.google.android.apps.photos --no-pause -l script.js
```
```sh
{"class":"org/chromium/net/GURLUtils","method":"nativeGetOrigin","signature":"(Ljava/lang/String;)Ljava/lang/String;","address":"0x..da910"}
..
```
[⬆ Back to top](#table-of-contents)
#### Log method arguments
```python
def on_message(m, _data):
if m['type'] == 'send':
print(m['payload'])
elif m['type'] == 'error':
print(m)
def switch(argument_key, idx):
"""
c/c++ variable type to javascript reader switch implementation
# TODO handle other arguments, [long, longlong..]
:param argument_key: variable type
:param idx: index in symbols array
:return: javascript to read the type of variable
"""
argument_key = argument_key.replace(' ', '')
return '%d: %s' % (idx, {
'int': 'args[%d].toInt32(),',
'unsignedint': 'args[%d].toInt32(),',
'std::string': 'Memory.readUtf8String(Memory.readPointer(args[%d])),',
'bool': 'Boolean(args[%d]),'
}[argument_key] % idx)
def list_symbols_from_object_files(module_id):
import subprocess
return subprocess.getoutput('nm --demangle --dynamic %s' % module_id)
def parse_nm_output(nm_stdout, symbols):
for line in nm_stdout.splitlines():
split = line.split()
open_parenthesis_idx = line.find('(')
raw_arguments = [] if open_parenthesis_idx == -1 else line[open_parenthesis_idx + 1:-1]
if len(raw_arguments) > 0: # ignore methods without arguments
raw_argument_list = raw_arguments.split(',')
symbols.append({
'address': split[0],
'type': split[1], # @see Symbol Type Table
'name': split[2][:split[2].find('(')], # method name
'args': raw_argument_list
})
def get_js_script(method, module_id):
js_script = """
var moduleName = "{{moduleName}}", nativeFuncAddr = {{methodAddress}};
Interceptor.attach(Module.findExportByName(null, "dlopen"), {
onEnter: function(args) {
this.lib = Memory.readUtf8String(args[0]);
console.log("[*] dlopen called with: " + this.lib);
},
onLeave: function(retval) {
if (this.lib.endsWith(moduleName)) {
Interceptor.attach(Module.findBaseAddress(moduleName).add(nativeFuncAddr), {
onEnter: function(args) {
console.log("[*] hook invoked", JSON.stringify({{arguments}}, null, '\t'));
}
});
}
}
});
"""
replace_map = {
'{{moduleName}}': module_id,
'{{methodAddress}}': '0x' + method['address'],
'{{arguments}}': '{' + ''.join([switch(method['args'][i], i + 1) for i in range(len(method['args']))]) + '}'
}
for k, v in replace_map.items():
js_script = js_script.replace(k, v)
print('[+] JS Script:\n', js_script)
return js_script
def main(app_id, module_id, method):
"""
$ python3.x+ script.py --method SomeClass::someMethod --app com.company.app --module libfoo.so
:param app_id: application identifier / bundle id
:param module_id: shared object identifier / known suffix, will iterate loaded modules (@see dlopen)
:param method: method/symbol name
:return: hook native method and print arguments when invoked
"""
# TODO extract all app's modules via `adb shell -c 'ls -lR /data/app/' + app_if + '*' | grep "\.so"`
nm_stdout = list_symbols_from_object_files(module_id)
symbols = []
parse_nm_output(nm_stdout, symbols)
selection_idx = None
for idx, symbol in enumerate(symbols):
if method is None: # if --method flag is not passed
print("%4d) %s (%d)" % (idx, symbol['name'], len(symbol['args'])))
elif method == symbol['name']:
selection_idx = idx
break
if selection_idx is None:
if method is None:
selection_idx = input("Enter symbol number: ")
else:
print('[+] Method not found, remove method flag to get list of methods to select from, `nm` stdout:')
print(nm_stdout)
exit(2)
method = symbols[int(selection_idx)]
print('[+] Selected method: %s' % method['name'])
print('[+] Method arguments: %s' % method['args'])
from frida import get_usb_device
device = get_usb_device()
pid = device.spawn([app_id])
session = device.attach(pid)
script = session.create_script(get_js_script(method, module_id))
script.on('message', on_message)
script.load()
device.resume(app_id)
# keep hook alive
from sys import stdin
stdin.read()
if __name__ == '__main__':
from argparse import ArgumentParser
parser = ArgumentParser()
parser.add_argument('--app', help='app identifier "com.company.app"')
parser.add_argument('--module', help='loaded module name "libfoo.2.so"')
parser.add_argument('--method', help='method name "SomeClass::someMethod", if empty it will print select-list')
args = parser.parse_args()
main(args.app, args.module, args.method)
```
Symbol Type Table
"A" The symbol's value is absolute, and will not be changed by further linking.
"B" The symbol is in the uninitialized data section (known as BSS).
"C" The symbol is common. Common symbols are uninitialized data.
When linking, multiple common symbols may appear with the same name.
If the symbol is defined anywhere, the common symbols are treated as undefined references.
"D" The symbol is in the initialized data section.
"G" The symbol is in an initialized data section for small objects.
Some object file formats permit more efficient access to small data objects, such as a global int variable as
opposed to a large global array.
"I" The symbol is an indirect reference to another symbol.
This is a GNU extension to the a.out object file format which is rarely used.
"N" The symbol is a debugging symbol.
"R" The symbol is in a read only data section.
"S" The symbol is in an uninitialized data section for small objects.
"T" The symbol is in the text (code) section.
"U" The symbol is undefined.
"V" The symbol is a weak object. When a weak defined symbol is linked with a normal defined symbol,
the normal defined symbol is used with no error.
When a weak undefined symbol is linked and the symbol is not defined, the value of the weak symbol becomes
zero with no error.
"W" The symbol is a weak symbol that has not been specifically tagged as a weak object symbol.
When a weak defined symbol is linked with a normal defined symbol,
the normal defined symbol is used with no error.
When a weak undefined symbol is linked and the symbol is not defined, the value of the symbol is determined
in a system-specific manner without error.
On some systems, uppercase indicates that a default value has been specified.
"-" The symbol is a stabs symbol in an a.out object file.
In this case, the next values printed are the stabs other field, the stabs desc field, and the stab type.
Stabs symbols are used to hold debugging information.
"?" The symbol type is unknown, or object file format specific.
[⬆ Back to top](#table-of-contents)
#### Enumerate loaded classes
And save to a file named `pkg.classes`
```bash
$ frida -U com.pkg -qe 'Java.perform(function(){Java.enumerateLoadedClasses({"onMatch":function(c){console.log(c);}});});' -o pkg.classes
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Class description
Get class methods & members.
```js
Object.getOwnPropertyNames(Java.use('com.company.CustomClass').__proto__).join('\n\t')
```
If there is a name collision, method & member has the same name, an underscore will be added to member. [source](https://github.com/frida/frida-java/pull/21)
```js
let fieldJsName = env.stringFromJni(fieldName);
while (jsMethods.hasOwnProperty(fieldJsName)) {
fieldJsName = '_' + fieldJsName;
}
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Turn Wifi OFF
It will turn WiFi off on the creation of the first Acivity.
```js
var WifiManager = Java.use("android.net.wifi.WifiManager");
Java.use("android.app.Activity").onCreate.overload("android.os.Bundle").implementation = function(bundle) {
var wManager = Java.cast(this.getSystemService("wifi"), WifiManager);
console.log('isWifiEnabled ?', wManager.isWifiEnabled());
wManager.setWifiEnabled(false);
this.$init(bundle);
}
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Set proxy
It will set a system-wide proxy using the supplied IP address and port.
```js
var ActivityThread = Java.use('android.app.ActivityThread');
var ConnectivityManager = Java.use('android.net.ConnectivityManager');
var ProxyInfo = Java.use('android.net.ProxyInfo');
var proxyInfo = ProxyInfo.$new('192.168.1.10', 8080, ''); // change to null in order to disable the proxy.
var context = ActivityThread.currentApplication().getApplicationContext();
var connectivityManager = Java.cast(context.getSystemService('connectivity'), ConnectivityManager);
connectivityManager.setGlobalProxy(proxyInfo);
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Get IMEI
Can also hook & change IMEI.
```js
function getIMEI(){
console.log('IMEI =', Java.use("android.telephony.TelephonyManager").$new().getDeviceId());
}
Java.perform(getIMEI)
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Hook io InputStream
Hook `InputputStream` & print buffer as `ascii` with char limit & exclude list.
```js
function binaryToHexToAscii(array, readLimit) {
var result = [];
// read 100 bytes #performance
readLimit = readLimit || 100;
for (var i = 0; i < readLimit; ++i) {
result.push(String.fromCharCode( // hex2ascii part
parseInt(
('0' + (array[i] & 0xFF).toString(16)).slice(-2), // binary2hex part
16
)
));
}
return result.join('');
}
function hookInputStream() {
Java.use('java.io.InputStream')['read'].overload('[B').implementation = function(b) {
// execute original and save return value
var retval = this.read(b);
var resp = binaryToHexToAscii(b);
// conditions to not print garbage packets
var reExcludeList = new RegExp(['Mmm'/*, 'Ping' /*, ' Yo'*/].join('|'));
if ( ! reExcludeList.test(resp) ) {
console.log(resp);
}
var reIncludeList = new RegExp(['AAA', 'BBB', 'CCC'].join('|'));
if ( reIncludeList.test(resp) ) {
send( binaryToHexToAscii(b, 1200) );
}
return retval;
};
}
Java.perform(hookInputStream);
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Android make Toast
```js
// 0 = // https://developer.android.com/reference/android/widget/Toast#LENGTH_LONG
Java.scheduleOnMainThread(() => {
Java.use("android.widget.Toast")
.makeText(Java.use("android.app.ActivityThread").currentApplication().getApplicationContext(), Java.use("java.lang.StringBuilder").$new("Text to Toast here"), 0).show();
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Await for condition
Await until specific DLL will load in Unity app, can implement hot swap.
```javascript
var awaitForCondition = function(callback) {
var int = setInterval(function() {
if (Module.findExportByName(null, "mono_get_root_domain")) {
clearInterval(int);
callback();
return;
}
}, 0);
}
function hook() {
Interceptor.attach(Module.findExportByName(null, "mono_assembly_load_from_full"), {
onEnter: function(args) {
this._dll = Memory.readUtf8String(ptr(args[1]));
console.log('[*]', this._dll);
},
onLeave: function(retval) {
if (this._dll.endsWith("Assembly-CSharp.dll")) {
console.log(JSON.stringify({
retval: retval,
name: this._dll
}, null, 2));
}
}
});
}
Java.perform(awaitForCondition(hook));
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Webview URLS
Log whenever WebView switch URL.
```js
Java.use("android.webkit.WebView").loadUrl.overload("java.lang.String").implementation = function (s) {
send(s.toString());
this.loadUrl.overload("java.lang.String").call(this, s);
};
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Print runtime strings
Hoooking `toString` of StringBuilder/Buffer & printing stacktrace.
```js
Java.perform(function() {
['java.lang.StringBuilder', 'java.lang.StringBuffer'].forEach(function(clazz, i) {
console.log('[?] ' + i + ' = ' + clazz);
var func = 'toString';
Java.use(clazz)[func].implementation = function() {
var ret = this[func]();
if (ret.indexOf('') != -1) {
// print stacktrace if return value contains specific string
Java.perform(function() {
var jAndroidLog = Java.use("android.util.Log"), jException = Java.use("java.lang.Exception");
console.log( jAndroidLog.getStackTraceString( jException.$new() ) );
});
}
send('[' + i + '] ' + ret);
return ret;
}
});
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Print shared preferences updates
```js
Java.perform(function() {
var shared_pref_class = Java.use('android.app.SharedPreferencesImpl$EditorImpl');
shared_pref_class.putString.overload('java.lang.String', 'java.lang.String').implementation = function(k, v) {
console.log('Shared preference updated: ', k, '=', v);
return this.putString(k, v);
}
shared_pref_class.putInt.overload('java.lang.String', 'int').implementation = function(k, v) {
console.log('Shared preference updated: ', k, '=', v);
return this.putInt(k, v);
}
shared_pref_class.putFloat.overload('java.lang.String', 'float').implementation = function(k, v) {
console.log('Shared preference updated: ', k, '=', v);
return this.putFloat(k, v);
}
shared_pref_class.putBoolean.overload('java.lang.String', 'boolean').implementation = function(k, v) {
console.log('Shared preference updated: ', k, '=', v);
return this.putBoolean(k, v);
}
shared_pref_class.putLong.overload('java.lang.String', 'long').implementation = function(k, v) {
console.log('Shared preference updated: ', k, '=', v);
return this.putLong(k, v);
}
shared_pref_class.putStringSet.overload('java.lang.String', java.util.Set).implementation = function(k, v) {
console.log('Shared preference updated: ', k, '=', v);
return this.putStringSet(k, v);
}
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### String comparison
```js
Java.perform(function() {
var str = Java.use('java.lang.String'), objectClass = 'java.lang.Object';
str.equals.overload(objectClass).implementation = function(obj) {
var response = str.equals.overload(objectClass).call(this, obj);
if (obj) {
if (obj.toString().length > 5) {
send(str.toString.call(this) + ' == ' + obj.toString() + ' ? ' + response);
}
}
return response;
}
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Hook JNI by address
Hook native method by module name and method address and print arguments.
```js
var moduleName = "libfoo.so";
var nativeFuncAddr = 0x1234; // $ nm --demangle --dynamic libfoo.so | grep "Class::method("
Interceptor.attach(Module.findExportByName(null, "dlopen"), {
onEnter: function(args) {
this.lib = Memory.readUtf8String(args[0]);
console.log("dlopen called with: " + this.lib);
},
onLeave: function(retval) {
if (this.lib.endsWith(moduleName)) {
console.log("ret: " + retval);
var baseAddr = Module.findBaseAddress(moduleName);
Interceptor.attach(baseAddr.add(nativeFuncAddr), {
onEnter: function(args) {
console.log("[-] hook invoked");
console.log(JSON.stringify({
a1: args[1].toInt32(),
a2: Memory.readUtf8String(Memory.readPointer(args[2])),
a3: Boolean(args[3])
}, null, '\t'));
}
});
}
}
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Hook constructor
```js
Java.use('java.lang.StringBuilder').$init.overload('java.lang.String').implementation = function(stringArgument) {
console.log("c'tor");
return this.$init(stringArgument);
};
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Hook reflection
`java.lang.reflect.Method#invoke(Object obj, Object... args, boolean bool)`
```javascript
Java.use('java.lang.reflect.Method').invoke.overload('java.lang.Object', '[Ljava.lang.Object;', 'boolean').implementation = function(a,b,c) {
console.log('hooked!', a, b, c);
return this.invoke(a,b,c);
};
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Trace class
Tracing class method, with pretty colors and options to print as JSON & stacktrace.
TODO add trace for c'tor.
```js
var Color = {
RESET: "\x1b[39;49;00m", Black: "0;01", Blue: "4;01", Cyan: "6;01", Gray: "7;11", Green: "2;01", Purple: "5;01", Red: "1;01", Yellow: "3;01",
Light: {
Black: "0;11", Blue: "4;11", Cyan: "6;11", Gray: "7;01", Green: "2;11", Purple: "5;11", Red: "1;11", Yellow: "3;11"
}
};
/**
*
* @param input.
* If an object is passed it will print as json
* @param kwargs options map {
* -l level: string; log/warn/error
* -i indent: boolean; print JSON prettify
* -c color: @see ColorMap
* }
*/
var LOG = function (input, kwargs) {
kwargs = kwargs || {};
var logLevel = kwargs['l'] || 'log', colorPrefix = '\x1b[3', colorSuffix = 'm';
if (typeof input === 'object')
input = JSON.stringify(input, null, kwargs['i'] ? 2 : null);
if (kwargs['c'])
input = colorPrefix + kwargs['c'] + colorSuffix + input + Color.RESET;
console[logLevel](input);
};
var printBacktrace = function () {
Java.perform(function() {
var android_util_Log = Java.use('android.util.Log'), java_lang_Exception = Java.use('java.lang.Exception');
// getting stacktrace by throwing an exception
LOG(android_util_Log.getStackTraceString(java_lang_Exception.$new()), { c: Color.Gray });
});
};
function traceClass(targetClass) {
var hook;
try {
hook = Java.use(targetClass);
} catch (e) {
console.error("trace class failed", e);
return;
}
var methods = hook.class.getDeclaredMethods();
hook.$dispose();
var parsedMethods = [];
methods.forEach(function (method) {
var methodStr = method.toString();
var methodReplace = methodStr.replace(targetClass + ".", "TOKEN").match(/\sTOKEN(.*)\(/)[1];
parsedMethods.push(methodReplace);
});
uniqBy(parsedMethods, JSON.stringify).forEach(function (targetMethod) {
traceMethod(targetClass + '.' + targetMethod);
});
}
function traceMethod(targetClassMethod) {
try {
var delim = targetClassMethod.lastIndexOf('.');
if (delim === -1)
return;
var targetClass = targetClassMethod.slice(0, delim);
var targetMethod = targetClassMethod.slice(delim + 1, targetClassMethod.length);
var hook = Java.use(targetClass);
var overloadCount = hook[targetMethod].overloads.length;
LOG({ tracing: targetClassMethod, overloaded: overloadCount }, { c: Color.Green });
for (var i = 0; i < overloadCount; i++) {
hook[targetMethod].overloads[i].implementation = function () {
var log = { '#': targetClassMethod, args: [] };
for (var j = 0; j < arguments.length; j++) {
var arg = arguments[j];
// quick&dirty fix for java.io.StringWriter char[].toString() impl because frida prints [object Object]
if (j === 0 && arguments[j]) {
if (arguments[j].toString() === '[object Object]') {
var s = [];
for (var k = 0, l = arguments[j].length; k < l; k++) {
s.push(arguments[j][k]);
}
arg = s.join('');
}
}
log.args.push({ i: j, o: arg, s: arg ? arg.toString(): 'null'});
}
var retval;
try {
retval = this[targetMethod].apply(this, arguments); // might crash (Frida bug?)
log.returns = { val: retval, str: retval ? retval.toString() : null };
} catch (e) {
console.error(e);
}
LOG(log, { c: Color.Blue });
return retval;
}
}
} catch(error) {
LOG({ tracing: targetClassMethod, "overloaded": 0}, { c: Color.Red });
}
}
// remove duplicates from array
function uniqBy(array, key) {
var seen = {};
return array.filter(function (item) {
var k = key(item);
return seen.hasOwnProperty(k) ? false : (seen[k] = true);
});
}
var Main = function() {
Java.perform(function () { // avoid java.lang.ClassNotFoundException
[
// "java.io.File",
'java.net.Socket'
].forEach(traceClass);
Java.use('java.net.Socket').isConnected.overload().implementation = function () {
LOG('Socket.isConnected.overload', { c: Color.Light.Cyan });
printBacktrace();
return true;
}
});
};
Java.perform(Main);
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Get Android ID
The [ANDROID_ID](https://developer.android.com/reference/android/provider/Settings.Secure.html#ANDROID_ID) is unique in each application in Android.
```javascript
function getContext() {
return Java.use('android.app.ActivityThread').currentApplication().getApplicationContext().getContentResolver();
}
function logAndroidId() {
console.log('[-]', Java.use('android.provider.Settings$Secure').getString(getContext(), 'android_id'));
}
```
Output example
https://stackoverflow.com/a/54818023/2655092
[⬆ Back to top](#table-of-contents)
#### Change location
```js
Java.perform(() => {
var Location = Java.use('android.location.Location');
Location.getLatitude.implementation = function() {
return LATITUDE;
}
Location.getLongitude.implementation = function() {
return LONGITUDE;
}
})
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Bypass FLAG_SECURE
Bypass screenshot prevention [stackoverflow question](https://stackoverflow.com/questions/9822076/how-do-i-prevent-android-taking-a-screenshot-when-my-app-goes-to-the-background)
```javascript
Java.perform(function() {
Java.use('android.view.SurfaceView').setSecure.overload('boolean').implementation = function(flag){
console.log('[1] flag:', flag);
this.call(false);
};
var LayoutParams = Java.use('android.view.WindowManager$LayoutParams');
Java.use('android.view.ViewWindow').setFlags.overload('int', 'int').implementation = function(flags, mask){
console.log('flag secure: ', LayoutParams.FLAG_SECURE.value);
console.log('before:', flags);
flags = (flags.value & ~LayoutParams.FLAG_SECURE.value);
console.log('after:', flags);
this.call(this, flags, mask);
};
});
```
Output example
https://stackoverflow.com/a/54818023/2655092
[⬆ Back to top](#table-of-contents)
#### Shared Preferences update
```javascript
function notifyNewSharedPreference() {
Java.use('android.app.SharedPreferencesImpl$EditorImpl').putString.overload('java.lang.String', 'java.lang.String').implementation = function(k, v) {
console.log('[SharedPreferencesImpl]', k, '=', v);
return this.putString(k, v);
}
}
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Hook overloads
```javascript
function hookOverloads(className, func) {
var clazz = Java.use(className);
var overloads = clazz[func].overloads;
for (var i in overloads) {
if (overloads[i].hasOwnProperty('argumentTypes') || overloads[i]['argumentTypes'] != undefined) {
var parameters = [];
var curArgumentTypes = overloads[i].argumentTypes, args = [], argLog = '[';
for (var j in curArgumentTypes) {
var cName = curArgumentTypes[j].className;
parameters.push(cName);
argLog += "'(" + cName + ") ' + v" + j + ",";
args.push('v' + j);
}
argLog += ']';
var script = "var ret = this." + func + '(' + args.join(',') + ") || '';\n"
+ "console.log(JSON.stringify(" + argLog + "));\n"
+ "return ret;"
args.push(script);
clazz[func].overload.apply(this, parameters).implementation = Function.apply(null, args);
}
}
}
Java.perform(function() {
hookOverloads('java.lang.StringBuilder', '$init');
})
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Register broadcast receiver
```javascript
Java.perform(() => {
const MyBroadcastReceiver = Java.registerClass({
name: 'MyBroadcastReceiver',
superClass: Java.use('android.content.BroadcastReceiver'),
methods: {
onReceive: [{
returnType: 'void',
argumentTypes: ['android.content.Context', 'android.content.Intent'],
implementation: function(context, intent) {
// ..
}
}]
},
});
let ctx = Java.use('android.app.ActivityThread').currentApplication().getApplicationContext();
ctx.registerReceiver(MyBroadcastReceiver.$new(), Java.use('android.content.IntentFilter').$new('com.example.JAVA_TO_AGENT'));
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### list classes implements interface
```js
function listClassesImplementsInterface(aInterface) {
let classLoaders = Java.enumerateClassLoadersSync()
Java.enumerateLoadedClassesSync().forEach(className => {
for (let i = 0; i < classLoaders.length; i++) {
let classLoader = classLoaders[i]
Java.classFactory.loader = classLoader
try {
let jclass = Java.use(className).class
let ifaces = jclass.getInterfaces().toString()
jclass = null
if (ifaces.indexOf(aInterface) != -1) {
console.log(JSON.stringify({
name: className,
loader: classLoader.toString(),
interfaces: ifaces
}))
break // we found one ClassLoader, that's enough
}
} catch (e) {
// continue to next ClassLoader
}
}
})
}
```
[⬆ Back to top](#table-of-contents)
#### Increase step count
```js
Java.perform(() => {
var customSensorEventListener = null;
var curSteps = 0;
var totalNumberOfRequiredSteps = 10000;
function incSteps() {
Java.perform(() => {
var sEvent = Java.use('android.hardware.SensorEvent').$new(1);
sEvent.values.values = Java.array('float', [curSteps]); // https://developer.android.com/reference/android/hardware/SensorEvent#values
sEvent.timestamp = Java.use('java.lang.Long').$new(Java.use('java.lang.System').nanoTime());
sEvent.accuracy = Java.use('java.lang.Integer').$new(3); // https://developer.android.com/reference/android/hardware/SensorManager#SENSOR_STATUS_ACCURACY_HIGH
customSensorEventListener.onSensorChanged(sEvent);
if (curSteps < totalNumberOfRequiredSteps) {
setTimeout(() => {
curSteps += 50;
incSteps();
}, 1500)
}
});
}
Java.choose('.CustomSensorEventListener', { // class that implements SensorEventListener
onMatch: function (instance) {
customSensorEventListener = instance;
},
onComplete: function () {
incSteps();
}
});
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### OS Log
```js
var m = 'libsystem_trace.dylib';
// bool os_log_type_enabled(os_log_t oslog, os_log_type_t type);
var isEnabledFunc = Module.findExportByName(m, 'os_log_type_enabled');
// _os_log_impl(void *dso, os_log_t log, os_log_type_t type, const char *format, uint8_t *buf, unsigned int size);
var logFunc = Module.findExportByName(m, '_os_log_impl');
// Enable all logs
Interceptor.attach(isEnabledFunc, {
onLeave: function (ret) {
ret.replace(0x1);
}
});
Interceptor.attach(logFunc, {
onEnter: function (a) {
/*
OS_ENUM(os_log_type, uint8_t,
OS_LOG_TYPE_DEFAULT = 0x00,
OS_LOG_TYPE_INFO = 0x01,
OS_LOG_TYPE_DEBUG = 0x02,
OS_LOG_TYPE_ERROR = 0x10,
OS_LOG_TYPE_FAULT = 0x11);
*/
var type = a[2];
var format = a[3];
if (type !== 0x2) {
console.log(JSON.stringify({
type: type,
format: format.readCString(),
//buf: a[4].readPointer().readCString() // TODO
}, null, 2));
}
}
})
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### iOS alert box
```js
var UIAlertController = ObjC.classes.UIAlertController;
var UIAlertAction = ObjC.classes.UIAlertAction;
var UIApplication = ObjC.classes.UIApplication;
var handler = new ObjC.Block({ retType: 'void', argTypes: ['object'], implementation: function () {} });
ObjC.schedule(ObjC.mainQueue, function () {
var alert = UIAlertController.alertControllerWithTitle_message_preferredStyle_('Frida', 'Hello from Frida', 1);
var defaultAction = UIAlertAction.actionWithTitle_style_handler_('OK', 0, handler);
alert.addAction_(defaultAction);
// Instead of using `ObjC.choose()` and looking for UIViewController instances on the heap, we have direct access through UIApplication:
UIApplication.sharedApplication().keyWindow().rootViewController().presentViewController_animated_completion_(alert, true, NULL);
})
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### File Access
Log each file open
```js
Interceptor.attach(ObjC.classes.NSFileManager['- fileExistsAtPath:'].implementation, {
onEnter: function (args) {
console.log('open' , ObjC.Object(args[2]).toString());
}
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Observe class
```js
function observeClass(name) {
var k = ObjC.classes[name];
k.$ownMethods.forEach(function(m) {
var impl = k[m].implementation;
console.log('Observing ' + name + ' ' + m);
Interceptor.attach(impl, {
onEnter: function(a) {
this.log = [];
this.log.push('(' + a[0] + ',' + Memory.readUtf8String(a[1]) + ') ' + name + ' ' + m);
if (m.indexOf(':') !== -1) {
var params = m.split(':');
params[0] = params[0].split(' ')[1];
for (var i = 0; i < params.length - 1; i++) {
try {
this.log.push(params[i] + ': ' + new ObjC.Object(a[2 + i]).toString());
} catch (e) {
this.log.push(params[i] + ': ' + a[2 + i].toString());
}
}
}
this.log.push(
Thread.backtrace(this.context, Backtracer.ACCURATE)
.map(DebugSymbol.fromAddress)
.join('\n')
);
},
onLeave: function(r) {
try {
this.log.push('RET: ' + new ObjC.Object(r).toString());
} catch (e) {
this.log.push('RET: ' + r.toString());
}
console.log(this.log.join('\n') + '\n');
}
});
});
}
```
Output example
`observeClass('Someclass$innerClass');`
```
Observing Someclass$innerClass - func
Observing Someclass$innerClass - empty
(0x174670040,parameterName) Someclass$innerClass - func
0x10048dd6c libfoo!0x3bdd6c
0x1005a5dd0 libfoo!0x4d5dd0
0x1832151c0 libdispatch.dylib!_dispatch_client_callout
0x183215fb4 libdispatch.dylib!dispatch_once_f
RET: 0xabcdef
```
[⬆ Back to top](#table-of-contents)
#### Find iOS application UUID
Get UUID for specific path when attached to an app by reading plist file under each app container.
```js
var PLACEHOLDER = '{UUID}';
function extractUUIDfromPath(path) {
var bundleIdentifier = String(ObjC.classes.NSBundle.mainBundle().objectForInfoDictionaryKey_('CFBundleIdentifier'));
var path_prefix = path.substr(0, path.indexOf(PLACEHOLDER));
var plist_metadata = '/.com.apple.mobile_container_manager.metadata.plist';
var errorPtr = Memory.alloc(Process.pointerSize);
Memory.writePointer(errorPtr, NULL);
var folders = ObjC.classes.NSFileManager.defaultManager().contentsOfDirectoryAtPath_error_(path_prefix, errorPtr);
var error = Memory.readPointer(errorPtr);
if (errorPtr)
console.error( new ObjC.Object( error ) );
for (var i = 0, l = folders.count(); i < l; i++) {
var uuid = folders.objectAtIndex_(i);
var metadata = path_prefix + uuid + plist_metadata;
var dict = ObjC.classes.NSMutableDictionary.alloc().initWithContentsOfFile_(metadata);
var enumerator = dict.keyEnumerator();
var key;
while ((key = enumerator.nextObject()) !== null) {
if (key == 'MCMMetadataIdentifier') {
var appId = String(dict.objectForKey_(key));
if (appId.indexOf(bundleIdentifier) != -1) {
return path.replace(PLACEHOLDER, uuid);
}
}
}
}
}
console.log( extractUUIDfromPath('/var/mobile/Containers/Data/Application/' + PLACEHOLDER + '/Documents') );
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Extract cookies
```js
var cookieJar = {};
var cookies = ObjC.classes.NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies();
for (var i = 0, l = cookies.count(); i < l; i++) {
var cookie = cookies['- objectAtIndex:'](i);
cookieJar[cookie.Name()] = cookie.Value().toString(); // ["- expiresDate"]().toString()
}
console.log(JSON.stringify(cookieJar, null, 2));
```
Output example
```js
{
"key1": "value 1",
"key2": "value 2"
}
```
[⬆ Back to top](#table-of-contents)
#### Describe class members
Print map of members (with values) for each class instance
```js
ObjC.choose(ObjC.classes[clazz], {
onMatch: function (obj) {
console.log('onMatch: ', obj);
Object.keys(obj.$ivars).forEach(function(v) {
console.log('\t', v, '=', obj.$ivars[v]);
});
},
onComplete: function () {
console.log('onComplete', arguments.length);
}
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Class hierarchy
Object.keys(ObjC.classes) will list all available Objective C classes,
but actually this will return all classes loaded in current process, including system frameworks.
If we want something like weak_classdump, to list classes from executable it self only, Objective C runtime already provides such function [objc_copyClassNamesForImage](#https://developer.apple.com/documentation/objectivec/1418485-objc_copyclassnamesforimage?language=objc)
```js
var objc_copyClassNamesForImage = new NativeFunction(
Module.findExportByName(null, 'objc_copyClassNamesForImage'),
'pointer',
['pointer', 'pointer']
);
var free = new NativeFunction(Module.findExportByName(null, 'free'), 'void', ['pointer']);
var classes = new Array(count);
var p = Memory.alloc(Process.pointerSize);
Memory.writeUInt(p, 0);
var path = ObjC.classes.NSBundle.mainBundle().executablePath().UTF8String();
var pPath = Memory.allocUtf8String(path);
var pClasses = objc_copyClassNamesForImage(pPath, p);
var count = Memory.readUInt(p);
for (var i = 0; i < count; i++) {
var pClassName = Memory.readPointer(pClasses.add(i * Process.pointerSize));
classes[i] = Memory.readUtf8String(pClassName);
}
free(pClasses);
var tree = {};
classes.forEach(function(name) {
var clazz = ObjC.classes[name];
var chain = [name];
while (clazz = clazz.$superClass) {
chain.unshift(clazz.$className);
}
var node = tree;
chain.forEach(function(clazz) {
node[clazz] = node[clazz] || {};
node = node[clazz];
});
});
send(tree);
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Hook refelaction
Hooking `objc_msgSend`
```py
import frida, sys
f = open('/tmp/log', 'w')
def on_message(msg, _data):
f.write(msg['payload']+'\n')
frida_script = """
Interceptor.attach(Module.findExportByName('/usr/lib/libobjc.A.dylib', 'objc_msgSend'), {
onEnter: function(args) {
var m = Memory.readCString(args[1]);
if (m != 'length' && !m.startsWith('_fastC'))
send(m);
}
});
"""
device = frida.get_usb_device()
pid = device.spawn(["com.example"]) # or .get_frontmost_application()
session = device.attach(pid)
script = session.create_script(frida_script)
script.on('message', on_message)
script.load()
device.resume(pid)
sys.stdin.read()
```
```sh
$ sort /tmp/log | uniq -c | sort -n
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Intercept Entire Module
To reduce UI related functions I ues the following steps:
1. Output log to a file using `-o /tmp/log1`
2. Copy MRU to excludesList using `$ sort /tmp/log1 | uniq -c | sort -rn | head -n20 | cut -d# -f2 | paste -sd "," -`
```js
var mName = 'MyModule', excludeList = ['Alot', 'Of', 'UI', 'Related', 'Functions'];
Module.enumerateExportsSync(mName)
.filter(function(e) {
var fromTypeFunction = e.type == 'function';·
var notInExcludes = excludeList.indexOf(e.name) == -1;
return fromTypeFunction && notInExcludes;
})
.forEach(function(e) {
Interceptor.attach(Module.findExportByName(mName, e.name), {
onEnter: function(args) {
console.log(mName + "#'" + e.name + "'");
}
})
})
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Dump memory segments
```js
Process.enumerateRanges('rw-', {
onMatch: function (range) {
var fname = `/sdcard/${range.base}_dump`;
var f = new File(fname, 'wb');
f.write(instance.base.readByteArray(instance.size));
f.flush();
f.close();
console.log(`base=${range.base} size=${range.size} prot=${range.protection} fname=${fname}`);
},
onComplete: function () {}
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Memory scan
```js
function memscan(str) {
Process.enumerateModulesSync().filter(m => m.path.startsWith('/data')).forEach(m => {
var pattern = str.split('').map(letter => letter.charCodeAt(0).toString(16)).join(' ');
try {
var res = Memory.scanSync(m.base, m.size, pattern);
if (res.length > 0)
console.log(JSON.stringify({m, res}));
} catch (e) {
console.warn(e);
}
});
}
```
```js
var memscn = function (str) {
Process.enumerateModulesSync().forEach(function (m) {
var pattern = str.split('').map(function (l) { return l.charCodeAt(0).toString(16) }).join(' ');
try {
var res = Memory.scanSync(m.base, m.size, pattern);
if (res.length > 0)
console.log(JSON.stringify({m, res}, null , 2));
} catch (e) {
console.warn(e);
}
});
}
```
Output example
pattern [ 52 41 4e 44 4f 4d ] {
"name": "Test",
"base": "0x1048fc000",
"size": 147000,
"path": "/var/containers/Bundle/Application/CD74EB00-9D90-4600-BF5D-F6E5E0CDF878/Test.app/Test"
}
[{"address":"0x10491f211","size":6}]
[⬆ Back to top](#table-of-contents)
#### Stalker
```js
var _module = Process.findModuleByName('myModule');
var base = ptr(_module.base);
var startTraceOffset = 0xabcd1234, numInstructionsToTrace = 50;
var startTrace = base.add(startTraceOffset), endTrace = startTrace.add(4 * (numInstructionsToTrace - 1));
Interceptor.attach(ObjC.classes.CustomClass['- func'].implementation, {
onEnter: function (args) {
var tid = Process.getCurrentThreadId();
this.tid = tid;
console.warn(`onEnter [ ${tid} ]`);
Stalker.follow(tid, {
transform: function (iterator) {
var instruction;
while ((instruction = iterator.next()) !== null) {
// condition to putCallout
if (instruction.address <= endTrace && instruction.address >= startTrace) {
// print instruction & registers values
iterator.putCallout(function(context) {
var offset = ptr(context.pc).sub(base);
var inst = Instruction.parse(context.pc).toString();
var modified_inst = inst;
inst.replace(/,/g, '').split(' ').forEach(op => {
if (op.startsWith('x'))
modified_inst = modified_inst.replace(op, context[op]);
else if (op.startsWith('w'))
modified_inst = modified_inst.replace(op, context[op.replace('w', 'x')]);
});
modified_inst = '\x1b[35;01m' + modified_inst + '\x1b[0m';
console.log(`x8=${context.x8} x25=${context.x25} x0=${context.x0} x21=${context.x21}`)
console.log(`${offset} ${inst} # ${modified_inst}`);
});
}
iterator.keep();
}
}
})
},
onLeave: function (retval) {
console.log(`onLeave [ ${this.tid} ]`);
// cleanup
Stalker.unfollow(this.tid);
Stalker.garbageCollect();
}
})
```
Output example
mul x5, x2, x21 # mul 0x3, 0x4, 0x5
[⬆ Back to top](#table-of-contents)
#### Cpp demangler
```sh
$ npm i frida-compile demangler-js -g
```
add to your script
```js
const demangle = require('demangler-js').demangle;
...
Module.enumerateExportsSync('library.so')
.filter(x => x.name.startsWith('_Z'))
.forEach(x => {
Interceptor.attach(x.address, {
onEnter: function (args) {
console.log('[-] ' + demangle(x.name));
}
});
});
```
compile
```sh
$ frida-compile script.js -o out.js
```
run
```sh
$ frida -Uf com.app -l out.js
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Early hook
Set hooks before DT_INIT_ARRAY ( [source](https://cs.android.com/android/platform/superproject/+/master:bionic/linker/linker_soinfo.cpp;l=386;drc=android-8.0.0_r1?q=call_constructor&ss=android%2Fplatform%2Fsuperproject) )
```js
let base;
let do_dlopen = null;
let call_ctor = null;
const target_lib_name = 'targetlib.so';
Process.findModuleByName('linker64').enumerateSymbols().forEach(sym => {
if (sym.name.indexOf('do_dlopen') >= 0) {
do_dlopen = sym.address;
} else if (sym.name.indexOf('call_constructor') >= 0) {
call_ctor = sym.address;
}
})
Interceptor.attach(do_dlopen, function (args) {
if (args[0].readUtf8String().indexOf(target_lib_name) >= 0) {
Interceptor.attach(call_ctor, function () {
const module = Process.findModuleByName(target_lib_name);
base = module.base;
console.log('loading', target_lib_name, '- base @', base);
// DoStuff
})
}
})
```
Credit: [iGio90](https://github.com/iGio90)
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Device properties
Example of quick&dirty iOS device properties extraction
```js
var UIDevice = ObjC.classes.UIDevice.currentDevice();
UIDevice.$ownMethods
.filter(function(method) {
return method.indexOf(':') == -1 /* filter out methods with parameters */
&& method.indexOf('+') == -1 /* filter out public methods */
})
.forEach(function(method) {
console.log(method, ':', UIDevice[method]())
})
console.log('executablePath =', ObjC.classes.NSBundle.mainBundle().executablePath().toString());
```
```js
if (ObjC.available) {
var processInfo = ObjC.classes.NSProcessInfo.processInfo();
var versionString = processInfo.operatingSystemVersionString().toString();
// E.g. "Version 13.5 (Build 17F75)"
var ver = versionString.split(' ');
var version = ver[1];
// E.g. 13.5
console.log("iOS version: " + version);
}
```
Output example
```
- adjTrackingEnabled : true
- adjFbAttributionId :
- adjVendorId : 4AAAAAAA-CECC-4BBB-BDDD-DEEEEEEEED18
- adjDeviceType : iPhone
- adjDeviceName : iPhone8,2
- adjCreateUuid : dfaaaa2-ebbd-4ccc-addd-eaeeeeeeee7c
- adjIdForAdvertisers : 7AAAAA3A-4BBB-4CCC-BDDD-0EEEEEEEE8A6
- sbf_bannerGraphicsQuality : 100
- sbf_controlCenterGraphicsQuality : 100
- sbf_homeScreenFolderGraphicsQuality : 100
- sbf_searchTransitionGraphicsQuality : 100
- sbf_dashBoardPresentationGraphicsQuality : 100
- sbf_homeScreenBlurGraphicsQuality : 100
- userInterfaceIdiom : 0
- _supportsDeepColor : false
- name : iPhone
- _keyboardGraphicsQuality : 100
- isGeneratingDeviceOrientationNotifications : true
- orientation : 1
- _backlightLevel : 1
- isProximityMonitoringEnabled : false
- systemVersion : 11.1.1
- _graphicsQuality : 100
- beginGeneratingDeviceOrientationNotifications : undefined
- endGeneratingDeviceOrientationNotifications : undefined
- buildVersion : 15C222
- systemName : iOS
- _isSystemSoundEnabled : true
- _feedbackSupportLevel : 1
- model : iPhone
- _supportsForceTouch : true
- localizedModel : iPhone
- identifierForVendor : 4A7B44DB-AAAA-BBB-CCC-D8819581DDD
- isBatteryMonitoringEnabled : false
- batteryState : 0
- batteryLevel : -1
- proximityState : false
- isMultitaskingSupported : true
- playInputClick : undefined
- _softwareDimmingAlpha : 0
- _playInputSelectSound : undefined
- _playInputDeleteSound : undefined
- _hasGraphicsQualityOverride : false
- _hasTouchPad : false
- _clearGraphicsQualityOverride : undefined
- _predictionGraphicsQuality : 100
- _nativeScreenGamut : 0
- _tapticEngine : <_UITapticEngine: 0x1c06257c0>
```
[⬆ Back to top](#table-of-contents)
#### Take screenshot
```js
function screenshot() {
ObjC.schedule(ObjC.mainQueue, function() {
var getNativeFunction = function (ex, retVal, args) {
return new NativeFunction(Module.findExportByName('UIKit', ex), retVal, args);
};
var api = {
UIWindow: ObjC.classes.UIWindow,
UIGraphicsBeginImageContextWithOptions: getNativeFunction('UIGraphicsBeginImageContextWithOptions', 'void', [['double', 'double'], 'bool', 'double']),
UIGraphicsBeginImageContextWithOptions: getNativeFunction('UIGraphicsBeginImageContextWithOptions', 'void', [['double', 'double'], 'bool', 'double']),
UIGraphicsEndImageContext: getNativeFunction('UIGraphicsEndImageContext', 'void', []),
UIGraphicsGetImageFromCurrentImageContext: getNativeFunction('UIGraphicsGetImageFromCurrentImageContext', 'pointer', []),
UIImagePNGRepresentation: getNativeFunction('UIImagePNGRepresentation', 'pointer', ['pointer'])
};
var view = api.UIWindow.keyWindow();
var bounds = view.bounds();
var size = bounds[1];
api.UIGraphicsBeginImageContextWithOptions(size, 0, 0);
view.drawViewHierarchyInRect_afterScreenUpdates_(bounds, true);
var image = api.UIGraphicsGetImageFromCurrentImageContext();
api.UIGraphicsEndImageContext();
var png = new ObjC.Object(api.UIImagePNGRepresentation(image));
send('screenshot', Memory.readByteArray(png.bytes(), png.length()));
});
}
rpc.exports = {
takescreenshot: screenshot
}
```
```py
...
def save_screenshot(d):
f = open('/tmp/screenshot.png', 'wb')
f.write(d)
f.close()
def on_message(msg, data):
save_screenshot(data)
script.exports.takescreenshot()
# open screenshot & invoke rpc via input
# will take screenshot, open it with eog & wait for export function name to invoke via input
def on_message(msg, data):
if 'payload' in msg:
if msg['payload'] == 'screenshot':
i = '/tmp/screenshot.png'
f = open(i, 'wb')
f.write(data)
f.close()
subprocess.call(['eog', i])
while True:
try:
time.sleep(1)
except KeyboardInterrupt:
script.exports.takescreenshot()
try:
getattr(script.exports, input())()
except (KeyboardInterrupt, frida.core.RPCException) as e:
print('[!]', e)
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### Log SSH Commands
```js
Interceptor.attach(ObjC.classes.NMSSHChannel['- execute:error:timeout:'].implementation, {
onEnter: function(args) {
this.cmd = ObjC.Object(args[2]).toString();
this.timeout = args[4];
},
onLeave: function(retv) {
console.log(`CMD: ${ObjC.Object(args[2]).toString()} Timeout: ${args[4]} Ret: ${retv}`);
}
});
```
Output example
TODO
[⬆ Back to top](#table-of-contents)
#### TODOs
- Add GIFs & examples
- Add links to /scripts
- Extend universal SSL unpinning for [ios](https://codeshare.frida.re/@dki/ios10-ssl-bypass/) [andoid 1](https://github.com/Fuzion24/JustTrustMe/blob/master/app/src/main/java/just/trust/me/Main.java) [android