StackOverflowExcept1on/ld-preload-trick
GitHub: StackOverflowExcept1on/ld-preload-trick
一个利用 LD_PRELOAD 在 Linux 上挂钩并替换 `time` 函数的 C++ 共享库示例，用于演示动态链接劫持与函数钩子技术。
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### ld-preload-trick
[](https://github.com/StackOverflowExcept1on/ld-preload-trick/actions/workflows/ci.yml)
在二进制文件之前加载并挂钩 `time` 函数的 C++ 库
### 环境要求
- cmake
- g++ 编译器
### 构建
```
./build.sh
```
### 运行
```
LD_PRELOAD=./build/bin/libhook.so ./build/bin/demo
```
```
[+] library is loaded
[!] hooked time(...) function
[!] original time(...) at 0x7fff261f2be0
original time(...) = 1675958710
patching result to 0
time(...) = 0 (in binary)
[-] library has been unloaded
```
标签：API接口, Bash脚本, C++, LD_PRELOAD, 函数Hook, 动态链接库, 数据擦除, 时间篡改, 系统编程