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fastjsonchecker's Introduction

fastjson Checker

一个用于手工检测fastjson反序列化漏洞的burpsuite插件。

解决痛点

在JSON.parseObject有对应实现类的情况下进行fastjson的反序列化，没有预设参数可能导致反序列化异常，或者在嵌套json的场景下只有部分位置使用fastjson进行解析： img_2.png img_3.png img_4.png

Usage

如图，在需要插入payload的地方右键选择对应payload，即可快速插入payload，相关提示会显示在插件日志中，并且支持一些常见的bypass手段: img.png bypass模块，选中其中一部分，右键指定编码模式，自动将引号内部进行编码1 img_1.png

TODO

  • 优化bypasswaf功能，目前只添加了两种编码和随机混合编码，后期继续加入插入无效字符等混合随机模式
  • 联动burp的dnslog和漏洞输出

参考

fastjsonchecker's People

Contributors

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