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pinduoduo_backdoor_code

这里存放拼多多事件的脱壳后的部分代码

项目根目录下的 .c 和 .h 文件为客户端里的manwe和nvwa加壳虚拟机so库文件的ida pro反编译导出,方便分析和写脱壳工具。

拼多多在/data下的数据完整备份在这个仓库 https://github.com/elllusion/pinduoduo-data

免责声明

注意:本仓库只是存放代码。若您使用本仓库代码作恶,那与本仓库所有者无关!

关于漏洞原理

有人已经分析了详见公众号文章:当 App 有了系统权限,真的可以为所欲为?

以下内容摘至公众号

Android Framework 中一个核心的对象传递机制是 Parcel, 希望被通过 Parcel 传递的对象需要定义 readFromParcel 和 writeToParcel 接口函数,并实现 Parcelable 接口。 理论上来讲,匹配序列化和反序列化函数应当是自反等效的,但系统 ROM 的开发者在编程过程中可能会出现不匹配的情况,例如写入的时候使用了 writeLong, 读取的时候却使用了 readInt。 这类问题在运行过程中一般不会引起注意,也不会导致崩溃或错误,但在攻击者精心布局下,却可最终利用 Settings 和 system_server 进程,将这个微小的错误转化为 StartAnyWhere 提权。 Android 近年来累计已修复上百个这类漏洞,并在 Android 13 中对 Parcel 机制做了改革,彻底杜绝了大部分此类攻击面。

但对于鸿蒙和绝大部分未升级到 Android 13 的设备和用户来说,他们仍处于危险之中。

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