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ByteHook

简体中文

ByteHook is an Android PLT hook library which supports armeabi-v7a, arm64-v8a, x86 and x86_64.

ByteHook is now used in TikTok, Douyin, Toutiao, Xigua Video, Lark.

If you need an Android inline hook library, please move to ShadowHook.

Features

Support Android 4.1 - 14 (API level 16 - 34).
Support armeabi-v7a, arm64-v8a, x86 and x86_64.
Multiple hooks and unhooks for the same function do not conflict with each other.
Hook a single, partial or all of the dynamic libraries in the process.
Hook the newly loaded dynamic libraries automatically.
Avoid recursive-calls and circular-calls between proxy functions automatically.
Support unwinding backtrace in proxy function.
MIT licensed.

Documentation

ByteHook Documentation

Quick Start

There is a sample app in the bytehook-sample you can refer to.

1. Add dependency in build.gradle

ByteHook is published on Maven Central, and uses Prefab package format for native dependencies, which is supported by Android Gradle Plugin 4.0+.

android {
    buildFeatures {
        prefab true
    }
}

dependencies {
    implementation 'com.bytedance:bytehook:1.0.10'
}

Note: ByteHook uses the prefab package schema v2, which is configured by default since Android Gradle Plugin 7.1.0. If you are using Android Gradle Plugin earlier than 7.1.0, please add the following configuration to gradle.properties:

android.prefabVersion=2.0.0

2. Add dependency in CMakeLists.txt or Android.mk

CMakeLists.txt

find_package(bytehook REQUIRED CONFIG)

add_library(mylib SHARED mylib.c)
target_link_libraries(mylib bytehook::bytehook)

Android.mk

include $(CLEAR_VARS)
LOCAL_MODULE           := mylib
LOCAL_SRC_FILES        := mylib.c
LOCAL_SHARED_LIBRARIES += bytehook
include $(BUILD_SHARED_LIBRARY)

$(call import-module,prefab/bytehook)

3. Specify one or more ABI(s) you need

android {
    defaultConfig {
        ndk {
            abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
        }
    }
}

4. Add packaging options

If you are using ByteHook in an SDK project, you may need to avoid packaging libbytehook.so into your AAR, so as not to encounter duplicate libbytehook.so file when packaging the app project.

android {
    packagingOptions {
        exclude '**/libbytehook.so'
    }
}

On the other hand, if you are using ByteHook in an APP project, you may need to add some options to deal with conflicts caused by duplicate libbytehook.so file.

android {
    packagingOptions {
        pickFirst '**/libbytehook.so'
    }
}

5. Initialize

import com.bytedance.android.bytehook.ByteHook;

public class MySdk {
    public static synchronized void init() {
        ByteHook.init();
    }
}

6. Hook and Unhook

#include "bytehook.h"

bytehook_stub_t bytehook_hook_single(
    const char *caller_path_name,
    const char *callee_path_name,
    const char *sym_name,
    void *new_func,
    bytehook_hooked_t hooked,
    void *hooked_arg);

bytehook_stub_t bytehook_hook_partial(
    bytehook_caller_allow_filter_t caller_allow_filter,
    void *caller_allow_filter_arg,
    const char *callee_path_name,
    const char *sym_name,
    void *new_func,
    bytehook_hooked_t hooked,
    void *hooked_arg);

bytehook_stub_t bytehook_hook_all(
    const char *callee_path_name,
    const char *sym_name,
    void *new_func,
    bytehook_hooked_t hooked,
    void *hooked_arg);

int bytehook_unhook(bytehook_stub_t stub);

These three hook functions are used to hook single, partial, and all caller dynamic libraries in the process.

Notice:

If you need to call the original function in the proxy function, please always use the BYTEHOOK_CALL_PREV() macro.
Make sure to call BYTEHOOK_POP_STACK() macro before proxy function returning. In the CPP source file, you can also call BYTEHOOK_STACK_SCOPE() macro at the beginning of the proxy function instead.

Contributing

License

ByteHook is licensed by MIT License.

ByteHook uses the following third-party source code or libraries:

queue.h
BSD 3-Clause License
Copyright (c) 1991, 1993 The Regents of the University of California.

bytedance / bhook Goto Github PK

bhook's Introduction

ByteHook

Features

Documentation

Quick Start

1. Add dependency in build.gradle

2. Add dependency in CMakeLists.txt or Android.mk

3. Specify one or more ABI(s) you need

4. Add packaging options

5. Initialize

6. Hook and Unhook

Contributing

License

bhook's People

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