Here are some of the files and programs i used to attack the ciphers in GSM, enjoy;)

844KB---		C files that simulate the GSM environment
250KB---		This is a simulation of the GSM enviornment using a sound file instead of text
405KB---		This is the progression of the different attack on A5
3066KB--		This is Sim Scan and the files I used to extract Ki from a sim card