Keebcap

此仓库包含与该文章关联的代码，文中我们讨论了如何构建一个支持所有不使用输入法编辑器的语言的 win32 键盘记录器。

所有测试均在 Windows 10 (22h2) 上完成。

目录结构

.   # keylog code
├── cap_gks.c           # sample keylogger using GetKeyState()
├── cap_llh.c           # sample keylogger using SetWindowsHookEx(WH_KEYBOARD_LL)
├── cap_rid.c           # sample keylogger using GetRawInputData()
├── process.c           # retrieve key-strokes context
├── process.h
├── vk_names.h          # virtual key to string (name) macro
│
│   # processing code
├── dumper.cpp          # program to dump windows KBD*.DLL contents to json
├── kbdhdr.h            # slightly modified windows headers
├── reconstruct.py      # reconstructs character stream from keylogs
├── replayer.py         # win32 python program to replay scan codes and extract resulting characters
│
│   # various
├── kbdlmap.py          # KLID to dll name mapping
├── vk_names.py         # virtual key number to/from name 
├── Makefile            # build keylogger with mingw-w64
│
│   # external dependencies
├── extern              
│   └── json.hpp        # by Niels Lohmann from https://github.com/nlohmann/json
│
│   # json files
├── inputs              # input test cases        
└── layouts             # output of dumper on all win32 kbd*.dll

依赖

$ sudo apt install mingw-w64 python3

用法

在 Windows 上，假设 exe 文件已放到桌面，输入以下任一命令：

c:\Users\user\Desktop> cap_gks.exe > keylog1.jsonl
c:\Users\user\Desktop> cap_llh.exe > keylog2.jsonl
c:\Users\user\Desktop> cap_rid.exe > keylog3.jsonl

将 DLL 内容转储为 json：

c:\Users\user\Desktop> dmp.exe kbdfr > kbdfr.json

要重新注入按键：

c:\Users\user\Desktop> python replayer.py keylog1.jsonl > keylog1_ref.txt

要从按键重建文本（并验证结果）

$ python3 reconstruct.py -v -l kbdfr.dll -c keylog1_ref.txt keylog1.jsonl

keebcap

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