crackercat / check_fish_inline_hook Goto Github PK

Fish Hook

自已的代码编译生成的函数，都存放于macho文件的__TEXT区
如果是系统的原函数，则位于__DATA区

如果检测到系统的函数(如open,getenv等)，它的函数地址位于__TEXT区，则可断定它被fish hook重绑定了

环境: arm64

tested in: iOS11, iOS9

程序运行结果

open hooked: 0
dladdr hooked: 0
read hooked: 0
getenv hooked: 0

2018-10-08 19:20:41.697 AppEnvCheck[12374:1659019] my getenv
2018-10-08 19:20:41.697 AppEnvCheck[12374:1659019] my getenv
2018-10-08 19:20:41.697 AppEnvCheck[12374:1659019] my getenv
2018-10-08 19:20:41.697 AppEnvCheck[12374:1659019] my open
2018-10-08 19:20:41.698 AppEnvCheck[12374:1659019] my getenv
2018-10-08 19:20:41.698 AppEnvCheck[12374:1659019] my getenv
2018-10-08 19:20:41.698 AppEnvCheck[12374:1659019] my getenv
2018-10-08 19:20:41.698 AppEnvCheck[12374:1659019] my getenv

open hooked: 1
dladdr hooked: 0
read hooked: 0
getenv hooked: 1

InLine Hook

substrate
HookZz

检测函数前几个汇编指令是否为跳转指令即可。

环境: arm64 ,tested in: iOS9

open hooked: 0
dladdr hooked: 0
read hooked: 0
getenv hooked: 0
getchar hooked: 1

uncacheMubels.m 打印出所有不在dyld shared cache动态库的名字

用task_info找出进程的信息,得到dyld_all_image_infos，遍历dyld_uuid_info数组来打印信息. 这个方法,比用_dyld_image_count _dyld_get_image_name的方法准确，省去了名字匹配.
现在是个人都知道hook _dyld_get_image_name来修改返回.

AppEnvCheck[13683:1851670] SubstrateBootstrap.dylib
AppEnvCheck[13683:1851670] /Developer/usr/lib/libBacktraceRecording.dylib
AppEnvCheck[13683:1851670] /Developer/Library/PrivateFrameworks/DTDDISupport.framework/libViewDebuggerSupport.dylib
AppEnvCheck[13683:1851670] /usr/lib/system/introspection/libdispatch.dylib
AppEnvCheck[13683:1851670] SubstrateLoader.dylib
AppEnvCheck[13683:1851670] /Library/MobileSubstrate/DynamicLibraries/AppAnalyze.dylib
AppEnvCheck[13683:1851670] /Library/Frameworks/CydiaSubstrate.framework/CydiaSubstrate
AppEnvCheck[13683:1851670] /Library/MobileSubstrate/DynamicLibraries/AppEnvCheckHOOK.dylib
AppEnvCheck[13683:1851670] /Library/MobileSubstrate/DynamicLibraries/SSLKillSwitch2.dylib
AppEnvCheck[13683:1851670] /Library/MobileSubstrate/DynamicLibraries/TEMain.dylib
AppEnvCheck[13683:1851670] /Library/MobileSubstrate/DynamicLibraries/TSTweakEx.dylib
AppEnvCheck[13683:1851670] /Library/MobileSubstrate/DynamicLibraries/reveal2Loader.dylib