How to crack WPA on a cluster

[MikeCa]

On a single computer you usually get 500 to 1000 keys per second, let's juice this up with a cluster.

First, you will need to split up your dictionary into segments. Let's take an example dictionary, wpa.txt, with 2,830,423 lines. With 64 cores, I will need 64 segments. 2830423 / 64 = 44225.

$ for file in `seq 1 64`; do head -n `echo "${file}*44225"|bc` ~/dict/wpa.txt | tail -n 44225 > ~/dict/wpa_seg/wpa_${file}.txt; done

This assumes your dictionary is in ~/dict/wpa.txt, and that you have a directory called wpa_seg to save the segments in.

Second, now that we have our segments we need to unleash the power of the cluster.

for file in `seq 1 64`; do (qrsh -now no "~/dict/aircrack-ng -w ~/dict/wpa_seg/wpa_${file}.txt -q -b 00:11:22:33:44:55 ~/dict/psl-02.cap > ~/dict/wpa_result/wpa_${file}.txt" &); done

This assumes you have your aircrack-ng binary in the ~/dict directory, that the bssid of the AP is 00:11:22:33:44:55, that you have psl-02.cap which has your handshake, and that you have a directory named wpa_result to store output. qrsh comes from a vanilla installation of the Rocks Clusters Linux distribution.

The power is great, I got a sustained test rate of 38,248 keys per second. Not bad for three minutes of setup.

[trellis]

Nice think about CUDA.
What was your total processing power?

[Eth!cal]

Thanks & ill give it a shot

[Mr-Protocol]

This is something I think is more interesting... hxxp://www.krazyworks.com/distributed-password-cracking-with-medussa/

There is also a distributed way to run john the ripper I've seen while looking around.

[homeless36]

wow .. it's awesome .. thanks for the tut ..

[ChokerBkL]

"...qrsh comes from a vanilla installation of the Rocks Clusters Linux distribution." How to get grsh from that distr? Is it necessary to install Rocks Clusters Linux distribution first and than copy binary from there or make second part of script in the installed distr?

[X-Ray Cat]

Can you make a video tut of it ? Thanks

[kidFromBigD]

The power is great, I got a sustained test rate of 38,248 keys per second. Not bad for three minutes of setup.

Excellent.
A few questions:
1) Your cluster is 64 cores - how many physical boxes is that spread across? Just curious.
2) I would assume each box has the same distro installed, yes? Can you mix & match?
3) When and if the PSK is discovered, do all the boxes immediately stop their computations and the "finder" reports the key?
Apologies in advance to the Moderators for helping to bump a thread that's aged a few months...

[shadi]

thxxx alot but it didnt work with me can you make a video tut

[Archangel-Amael]

thxxx alot but it didnt work with me can you make a video tut

Here is a better idea, go read some documentation.
You can't be a pentester if you can't read.