This tool is currently Linux only. Linux binaries (32 and 64 bit) are provided. Cuda 2.3 or later is needed.
They expect 200 CUDA equipped PCs to generate a full set of rainbow tables within about six weeks. The rainbow table supports a known plaintext attack, because some bits in GSM communications are extremely predictable. This in turn allows the attacker to reverse look up the used crypto key in the rainbow table.
This makes it relatively easy to attack all communications on GSM networks within minutes, including intercept of text messages (SMS), voice and data calls. The equipment needed would be affordable (~$1000) and the attack could be a passive one.
The challenge is to compute a complete set of rainbow tables in finite time. Cuda to the rescue.
I was able to compile the program from source, but I am not quite sure what to do with the results (tables) computed by the program. The project has a mailing list where people can ask questions.
I believe their plan is to set up a distributed rainbow table query scheme, peer to peer style. It would be quite impractical to store the entire (HUGE) table on one site only. UPDATE: And some cellular service providers might want take down such a site ASAP - there have been threats against similar previous projects, preventing disclosure of such tables.