Monday, 25 April 2011
Keyloggers for Linux: Secretly Watch The Linux Users
For windows, there are numerous keyloggers out there with many pretty cool features but there has been none such great keylogger. But lately there have been few developments and new keyloggers have been developed for Linux platform. In this post, I'll list few keyloggers for linux I've heard about.
1. PyKeylogger - PyKeylogger is a free open source keylogger written in the python programming language, available under the terms of the GNU General Public License. It is currently available for Windows (NT/2000 and up), and Linux (using Xlib, so won't work on the console). It is primarily designed for personal backup purposes, rather than stealth keylogging. Thus, it does not make explicit attempts to hide its presence from the operating system or the user. That said, the only way it is visible is that the process name shows up in the task list, so it is not immediately apparent that there is a keylogger on the system. More on PyKeylogger
2. Logkeys - Logkeys is no more advanced than other available Linux keyloggers, but is a bit more up to date, it doesn't unreliably repeat keys and it should never crash your X. It works with serial as well as USB keyboards. More on Logkeys
3. LKL (Linux KeyLogger) - LKL is a userspace keylogger that runs under Linux on the x86 arch. LKL sniffs and logs everything that passes through the hardware keyboard port (0x60). It translates keycodes to ASCII with a keymap file. LKL Homepage
4. THC-Vlogger - THC-vlogger, an advanced linux kernel based keylogger developed by famous hacker group THC, enables the capability to log keystrokes of all administrator/user's sessions via console, serial and remote sessions (telnet, ssh), switching logging mode by using magic password, stealthily sending logged data to centralized remote server. Its smart mode can automatically detect password prompts to log only sensitive user and password information. THC-Vlogger Home
The keyloggers for Linux are not much advanced and generally lack stealth. You'll have to be creative to make those keyloggers really stealth. Anyway, I hope this list gives you a start to know about linux keyloggers.
1. PyKeylogger - PyKeylogger is a free open source keylogger written in the python programming language, available under the terms of the GNU General Public License. It is currently available for Windows (NT/2000 and up), and Linux (using Xlib, so won't work on the console). It is primarily designed for personal backup purposes, rather than stealth keylogging. Thus, it does not make explicit attempts to hide its presence from the operating system or the user. That said, the only way it is visible is that the process name shows up in the task list, so it is not immediately apparent that there is a keylogger on the system. More on PyKeylogger
2. Logkeys - Logkeys is no more advanced than other available Linux keyloggers, but is a bit more up to date, it doesn't unreliably repeat keys and it should never crash your X. It works with serial as well as USB keyboards. More on Logkeys
3. LKL (Linux KeyLogger) - LKL is a userspace keylogger that runs under Linux on the x86 arch. LKL sniffs and logs everything that passes through the hardware keyboard port (0x60). It translates keycodes to ASCII with a keymap file. LKL Homepage
4. THC-Vlogger - THC-vlogger, an advanced linux kernel based keylogger developed by famous hacker group THC, enables the capability to log keystrokes of all administrator/user's sessions via console, serial and remote sessions (telnet, ssh), switching logging mode by using magic password, stealthily sending logged data to centralized remote server. Its smart mode can automatically detect password prompts to log only sensitive user and password information. THC-Vlogger Home
The keyloggers for Linux are not much advanced and generally lack stealth. You'll have to be creative to make those keyloggers really stealth. Anyway, I hope this list gives you a start to know about linux keyloggers.
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