aircrack

http://www.offensive-security.com/movies/aircrack_ptw/aircrack_ptw.html

1. aircrack-ptw : install libpcap and aircrack-ptw
2. aireplay-ng (-1) : fake authentication
3. aireplay-ng (-3) : arp request replay
4. airodump : dump packets
5. aircrack-ptw : packet until key found