cowpatty 4.8-2 (amd64 binary) in ubuntu disco

 If you are auditing WPA-PSK or WPA2-PSK networks, you can use
 this tool to identify weak passphrases that were used to generate the
 PMK. Supply a libpcap capture file that includes the 4-way handshake, a
 dictionary file of passphrases to guess with, and the SSID for the
 network.