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How to crack a WPA/WPA2 PSK network ?

You must sniff packets (by putting your wireless network card in monitor mode) until a handshake takes place between a wireless client and the access point. Alternatively (if your network card supports packet injection) you can try to force the cilent to reauthenticate using a deauth attack with a tool like aireplay-ng.

Once you've successfully captured a 4-way handshake, you'd need to apply a brute force dictinary attack, using a tool like aircrack-ng.

A strong WPA/WPA2 passphrase can take a very long time to crack, that is why using strong passwords is imperative.

Note that the capture phase unlike WEP cracking only needs very few frames, a 4-way handshake. What makes cracking WPA/WPA2-PSK much harder is the necessary brute-force dictionary attack.

  User Reviews/Comments:
by WiFan - 2011-08-08 20:54
Dear Wireless & B.T Prof's., i am a newbei to wifi and have a kinda silly question!
i need to know how to save the captured *.cap file to any storage media?
to make it clear:
i have applied the command : aireplay-ng....etc, and it runs pretty well, but i don't know how to stop the capturing procedure.
any help would be highly appreciated on how and what combination to press on keyboard to solve my li'l problem.

by Philip - 2011-08-10 10:15
The article on cracking WEP/WPA states how to specify the capture file:

As to interrupting/terminating the capture process, you can hit "CTRL+C".
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