MRCTF2022 Stuuuuub

writeup已上传，题目附件已上传

参考

https://developer.android.com/reference/dalvik/system/InMemoryDexClassLoader

https://blog.csdn.net/shulianghan/article/details/122017822

https://hanshuliang.blog.csdn.net/article/details/121950834#oat_file_assistantccGenerateOatFileNoChecks__385

https://www.jianshu.com/p/ae66be381e6f

http://aospxref.com/android-8.0.0_r36/xref/art/runtime/oat_file_assistant.cc?fi=MakeUpToDate#GenerateOatFileNoChecks

相关开源项目

Allows you to partly emulate an Android native library. https://github.com/AeonLucid/AndroidNativeEmu

This is a personal improved version of AndroidNativeEmu https://github.com/maiyao1988/ExAndroidNativeEmu

孤挺花（Armariris） – 由上海交通大学密码与计算机安全实验室维护的LLVM混淆框架 https://github.com/GoSSIP-SJTU/Armariris

绕过 Android阻止应用动态链接非公开NDK库限制 进行dlopen和dlsym https://github.com/lizhangqu/dlfcn_compat

thumb16 thumb32 arm32 inlineHook框架 https://github.com/ele7enxxh/Android-Inline-Hook

函数代码抽空解决方案 https://github.com/luoyesiqiu/dpt-shell

ollvm4.0 https://github.com/obfuscator-llvm/obfuscator/tree/llvm-4.0