hankbao / HookZz

a hook framwork for arm/arm64/ios/android

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What is HookZz ?

a hook framwork for arm/arm64/ios/android

ref to: frida-gum and minhook and substrate.

special thanks to frida-gum perfect code and modular architecture, frida is aircraft carrier, HookZz is boat, but still with some tricks

thanks for @lauos with contributing android code


  • solidify inlinehook without Jailbreak [new-90%]

  • GOT hook with HookZz(i.e. change fishhook to inlinehook), better for APM [new-0%]

  • HookZz-Modules help you to hook.

  • the power to access registers directly

  • hook function with replace_call

  • hook function with pre_call and post_call

  • hook address(a piece of code) with pre_call and half_call

  • (almost)only one instruction to hook(i.e. hook short funciton, even only one instruction) [arm/thumb/arm64]

  • runtime code patch, without codesign limit

  • it's cute

How it works ?

Move to HookFrameworkDesign.md

Why I do this?

  1. for arsenal - zzdeps
  2. for low-level control

Who use this?

VirtualApp An open source implementation of MultiAccount.(Support 4.0 - 8.0)

AppleTrace Trace tool for iOS/macOS (similar to systrace for Android)


Move to HookZz docs [need update]


Move to HookZzModules [need update]


use git clone --depth 1 http://github.com/jmpews/HookZz to clone the latest commit.

build for arm64-ios

1. build libhookzz.dylib and libhookzz.static.a

λ : >>> make clean; make BACKEND=ios ARCH=arm64
clean all *.o success!
generate [/Users/jmpews/project/HookZz/src/allocator.o]!
generate [/Users/jmpews/project/HookZz/src/interceptor.o]!
generate [/Users/jmpews/project/HookZz/src/memory.o]!
generate [/Users/jmpews/project/HookZz/src/stack.o]!
generate [/Users/jmpews/project/HookZz/src/tools.o]!
generate [/Users/jmpews/project/HookZz/src/trampoline.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/backend-posix/thread-posix.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/backend-darwin/memory-darwin.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/arch-arm64/instructions.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/arch-arm64/reader-arm64.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/arch-arm64/regs-arm64.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/arch-arm64/relocator-arm64.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/arch-arm64/writer-arm64.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/backend-arm64/interceptor-arm64.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/backend-arm64/thunker-arm64.o]!
generate [/Users/jmpews/project/kitzz/CommonKit/memory/common_memory_kit.o]!
generate [/Users/jmpews/project/kitzz/PosixKit/memory/posix_memory_kit.o]!
generate [/Users/jmpews/project/kitzz/PosixKit/thread/posix_thread_kit.o]!
generate [/Users/jmpews/project/kitzz/MachoKit/macho_kit.o]!
generate [/Users/jmpews/project/kitzz/DarwinKit/MemoryKit/darwin_memory_kit.o]!
generate [/Users/jmpews/project/HookZz/src/platforms/backend-arm64/interceptor-template-arm64.o]!
build success for arm64-ios-hookzz!

check build/ios-arm64/*.

2. build tests dylib

λ : >>> make clean; make
clean all *.o success!
build [test_hook_oc.dylib] success for arm64-ios!
build [test_hook_address.dylib] success for arm64-ios!
build [test_hook_printf.dylib] success for arm64-ios!
build [test] success for arm64-ios-hookzz!

check build/ios-arm64/*.

build for arm-ios


build for arm64-android

use ndk-build

build libhookzz.so and libhookzz.static.a

λ D:\TechnicalProgram\Android-SDK\ndk-bundle\build\ndk-build NDK_PROJECT_PATH=. APP_BUILD_SCRIPT=./Android.mk APP_ABI=arm64-v8a
Android NDK: APP_PLATFORM not set. Defaulting to minimum supported version android-14.
[arm64-v8a] Compile        : hookzz <= allocator.c
[arm64-v8a] Compile        : hookzz <= interceptor.c
[arm64-v8a] Compile        : hookzz <= memory.c
[arm64-v8a] Compile        : hookzz <= stack.c
[arm64-v8a] Compile        : hookzz <= tools.c
[arm64-v8a] Compile        : hookzz <= trampoline.c
[arm64-v8a] Compile        : hookzz <= memory-linux.c
[arm64-v8a] Compile        : hookzz <= thread-posix.c
[arm64-v8a] Compile        : hookzz <= instructions.c
[arm64-v8a] Compile        : hookzz <= reader-arm64.c
[arm64-v8a] Compile        : hookzz <= regs-arm64.c
[arm64-v8a] Compile        : hookzz <= relocator-arm64.c
[arm64-v8a] Compile        : hookzz <= writer-arm64.c
[arm64-v8a] Compile        : hookzz <= interceptor-arm64.c
[arm64-v8a] Compile        : hookzz <= thunker-arm64.c
[arm64-v8a] Compile        : hookzz <= interceptor-template-arm64.S
[arm64-v8a] Compile        : hookzz <= common_memory_kit.c
[arm64-v8a] Compile        : hookzz <= linux_memory_kit.c
[arm64-v8a] Compile        : hookzz <= posix_memory_kit.c
[arm64-v8a] Compile        : hookzz <= posix_thread_kit.c
[arm64-v8a] StaticLibrary  : libhookzz.a

build tests ELF

test files in tests/arm-android

Quick Example

test_hook_printf.c output for arm64-ios

test hook printf with try_near_jump option , and ZzEnableDebugMode() with replace_call, pre_call, post_call.

LogInfo: enter_thunk at 0x100162c20, use enter_thunk_template.

LogInfo: leave_thunk at 0x1001500f4, length: 240.

LogInfo: on_enter_trampoline at 0x1001502d8, length: 44. hook-entry: 0x145e0c720. and will jump to enter_thunk(0x100162c20).

LogInfo: on_enter_transfer_trampoline at 0x180f1f414, length: 20. and will jump to on_enter_trampoline(0x1001502d8).

LogInfo: on_invoke_trampoline at 0x100150304, length: 24. and will jump to rest code(0x181402a60).
ArmInstructionFix: origin instruction at 0x181402a5c, relocator end at 0x181402a60, relocator instruction nums 1
origin_prologue: 0xf4 0x4f 0xbe 0xa9 

LogInfo: on_leave_trampoline at 0x10015031c, length: 44. and will jump to leave_thunk(0x1001500f4).

HookZzzzzzz, %d, %p, %d, %d, %d, %d, %d, %d, %d

call printf
HookZzzzzzz, 1, 0x2, 3, 4, 5, 6, 7, 8, 9
HookZzzzzzz, %d, %p, %d, %d, %d, %d, %d, %d, %d

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a hook framwork for arm/arm64/ios/android

License:Apache License 2.0


Language:C 92.0%Language:Makefile 3.9%Language:C++ 1.9%Language:Assembly 1.5%Language:Objective-C 0.7%