KeyKeriki – Opensource Wireless Keyboard Sniffer

Keykeriki Wirelesss Keyboard Sniffer

Kyekeriki is an opensource hardware and software project enables every person to verify the security level of their own keyboard transmissions, and/or demonstrate the sniffing attacks. This hardware device can be powered directly via the USB bus or a stable 5V power source. For logging purposes, a SDCard interface has been built in the board. It uses uses one of the ATMEGA’s USART’s for interfacing with external hardware extensions. After ‘infecting’, you can either view using a terminal application or use the application provided by the authors themselves! The application is called as keyctrl.

About the hardware :

• Mini USB connector (USB to serial + power)
• SDCard slot
• External Antenna Connector
• USART connector for ‘Backpacks’ (channel for future hardware extensions)

About the software :

Because of the flexible hardware design, most features are built within software. We wanted to provide more than just decoding of the collected data in this initial release, and we have. Please see the following feature list:

• Radio frequency channel switching
• Signal strenght (RSSI) display
• Data logging to SDCard
• Dumping content of SDCard to terminal
• Encryption key handling
• On-the-fly deciphering of Microsoft’s XOR based encryption
• Hardware signal filter state configuration
• Feature state configuration incl. persistent storage
• Activation and usage of backpack USART interface
• Sniffing and decoding of keystrokes of Microsoft 27Mhz based keyboards

There are a few known extensions/backpacks.

Other added functionalities such as:

• LCD Backpack – Shows keystrokes on lcd
• epeater Backpack – Sends teh keystrokes using GPRS or other radio transmission
• Iphone interface

Slides : Author Slides from here

Hardware : Keykerik-hw-0.6.tar.gz (Eagle files,partlists,build howto)

Software : Keykeriki-release-0.5.2.tar.gz (Software &  Documentation)