Louwrentius

There is a nifty little program called 'iotop'. Iotop is part of Debian or Ubuntu and can be installed with a simple apt-get.

Once you have determined with 'top' that the system is waiting on IO-access, It is nice to know

which process is responsibe for this IO. Therefore, you want a list of processes, just like top provides, but instead of CPU or RAM usage, it shows the IO a process is generating. This is exactly what 'iotop' provides.

This is ideal when troubleshooting performance problems caused by heavy IO.

http://guichaz.free.fr/iotop/

I was unable to get cowpatty working with a packet capture that actually

contains a four-way handshake of a WPA session.

I got it working like this:

First, download cowpatty 4.6 right here, within the source directory of cowpatty.

Extract cowpatty and apply this patch using these instructions

Then build couwpatty just with 'make' and 'make install'.

I created a test setup with a known password. However, this patched

version did not find the passphrase using a dictionary file.

I then used genpmk to create a precomputed hash database like this:

genpmk -f ./aircrack-ng-1.0/test/password.lst -d hashes -s default

Please note that I added the correct passphrase to this password list to

make sure that cowpatty works.

Finally, using the -d option on the hash file, cowpatty

managed to crack the PSK.

ng.org/index.php?PHPSESSID=9e79f0ff83630bbe6c870b1a9aeef63c&topic=5867.0