《做一个属于自己的USB键盘记录器》.doc

做一个属于自己的USB键盘记录器（一） /id/How-to-build-your-own-USB-Keylogger/ 2011-06-08 17:20?发表????? 系统分类：嵌入式系统????? 自定义分类：创意电子 标签：USB 键盘记录器 ? How to build your own USB Keylogger Cause Ive searched a lot for a project like this, and I havent find anything around the Web, I would share my experience of my personal USB Keylogger.Its not really a pure USB Keylogger (cause USB HID protocol is much more difficult than PS/2 protocol), but it adapt an USB Keyboard to PS/2 port, while (of course) recording the keys pressed.In this way, even if its discovered by anybody, it should be confused with a normal PS/2 Adapter.Thats the final result:It need just a few component (SOIC PIC and EEPROM can be freely ordered as a sample from /samples/ ):-PIC 12F1822 ?(SOIC Version)-EEPROM 24XX1025 (Any 1Mb version will be ok)? (SOIC Version)-2 * 4k7 Resistor 1/8 W (Or any resistor of the same value as small as you can solder in the adaptor)-Pickit 2 / 3 (For programming the pic and reading the eeprom)-An USB to PS/2 Adapter that can be opened.And, very important:-A GOOD solder and VERY GOOD soldering abilities.Lets Start.EDIT (in reply to comments):Some weeks ago, a friend of mine asked me to help him, cause his computer seamed blocked, indeed, he couldnt either type his password to login with his account..I know that he is almost a novice and couldnt just change the keyboard instead of asking me help, anyway, i changed his keyboard, but I wanted to know why it wasnt working, I tried it on another computer without any result, except that the keyboards leds blinked, so, I wanted to go deeper; I take a Logic Analyzer and i have analyzed the PS/2 protocol, I have discovered that the keyboard was switching off whenever the PC sends 0xFF (Reset) command.. I then solved it simply replacing a capacitor that has blown up.This is WHY I build it (for any similar case), Im NOT responsible of ANY aim you use this Keylogger.Illegal is the WAY you use a Keylogger, not the Keylogger by itself.