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https://github.com/amimo/dcc
DCC (Dex-to-C Compiler) is method-based aot compiler that can translate DEX code to C code.
https://github.com/amimo/dcc
compiler dalvik java2c obfuscator
Last synced: 4 days ago
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DCC (Dex-to-C Compiler) is method-based aot compiler that can translate DEX code to C code.
- Host: GitHub
- URL: https://github.com/amimo/dcc
- Owner: amimo
- License: apache-2.0
- Created: 2019-08-09T14:39:24.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2024-02-07T11:27:45.000Z (10 months ago)
- Last Synced: 2024-11-30T23:06:14.584Z (11 days ago)
- Topics: compiler, dalvik, java2c, obfuscator
- Language: Python
- Size: 784 KB
- Stars: 1,130
- Watchers: 35
- Forks: 396
- Open Issues: 22
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-hacking-lists - amimo/dcc - DCC (Dex-to-C Compiler) is method-based aot compiler that can translate DEX code to C code. (Python)
README
# dcc
DCC (Dex-to-C Compiler) is method-based aot compiler that can translate DEX code to C code.
## 安装
### Linux
以下是ubuntu 18.04 环境下的安装配置步骤,如果某些环节已经配置过,如JDK,可跳过.
+ 下载代码
```
git clone https://github.com/amimo/dcc.git
```
+ 安装项目依赖
```
cd dcc
pip3 install -r requirements.txt
wget -O tools/apktool.jar https://bitbucket.org/iBotPeaches/apktool/downloads/apktool_2.4.0.jar
```
+ 安装配置安卓开发环境(NDK r17+, SDK)
```
export PATH=path/to/ndk:$PATH
```
+ 安装JDK
```
sudo apt-get install openjdk-8-jdk
```
### Windows
+ 安装python3
+ 安装项目依赖. 下载apktool,将其重命名为apktool.jar后放到dcc/tools目录中.
```
cd dcc
pip3 install -r requirements.txt
```
+ 安装NDK(r17+),将dcc.cfg中ndk_dir修改为NDK安装目录
+ 安装JRE或JDK,将java加入path.
## 使用dcc加固app
### 1. 加载Native库
首先在app代码合适的位置,如Application的静态代码块或onCreate等,添加加载so库代码,并重新生成apk
```
try {
System.loadLibrary("nc");
} catch (UnsatisfiedLinkError e) {
e.printStackTrace();
}
```
### 2. 指定需要编译的方法
#### 使用黑白名单
dcc支持使用黑白名单来过滤需要编译或禁止编译的函数.
修改filter.txt,使用正则表达式配置需要处理的函数.默认编译Activity.onCreate,和测试demo中的所有函数.
```
vi filter.txt
```
#### 使用注解
在任意包中新增Dex2C注解类
```
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
@Retention(RetentionPolicy.RUNTIME)
public @interface Dex2C {}
```
然后使用Dex2C标记需要编译的类或者方法
### 3. 加固APP
使用如下命令加固your_app.apk
```
python3 dcc.py your_app.apk -o out.apk
```
该命令会生成两个文件out.apk和project-source.zip.其中out.apk已经使用testkey签名的加固app,可以直接安装;
project-source.zip是个jni工程,里面包含我们编译出来的c代码,解压出来后可以直接使用ndk编译.
## 测试demo
+ 修改测试demo项目local.properties,配置正确的ndk.dir,sdk.dir路径
```
vi tests/demo-java/local.properties
vi tests/demo-c/local.properties
```
+ 编译demo-java
```
cd tests/demo-java
./gradlew assembleDebug
```
+ 将dex编译到c,生成的c代码输出到demo-c的src/main目录下
```
cd dcc
python3 dcc.py tests/demo-java/app/build/outputs/apk/debug/app-debug.apk --source-dir=tests/demo-c/app/src/main/ --no-build
```
+ 编译c demo
```
cd tests/demo-c
./gradlew assembleDebug
```
如果一切顺利,"tests/demo-c/app/build/outputs/apk/debug/app-debug.apk"就是最终生成的apk,安装到手机并运行,看是否会崩溃.
## 注意
+ 这是我个人研究项目,当前还未经过大量测试,请谨慎用于线上项目!
+ 编译出来的C代码使用JNI跟Java虚拟机交互,有可能会对性能产生非常严重的影响,请谨慎选择加固函数!
## 参考资源
+ [DAD](https://github.com/androguard/androguard/tree/master/androguard/decompiler/dad)