Local Tech Repair: Getting WepCrackGUI installed on Ubuntu 13.04 & 14.04

Thursday, June 27, 2013

Getting WepCrackGUI installed on Ubuntu 13.04 & 14.04

WebCrackGUI is an easy scripted way to run attacks on WEP and a simple way of grabbing handshake from a WPA network. Though WepCrack does not install always easily.
*updated 11/.2/14*

a more updated article on how wifi is cracked by a cracker is located here



So this is how you can install it and get it to run. I ran into an error that I had to figure out that it was a runtime error. So i am going to show you a work around to get it to compile right at runtime.

First you will first need to grab the source at the sourceforge website.

http://sourceforge.net/projects/wepcrackgui/

once we have that we will need to extract the source to a location you will remember. I put it in my home directory for so for me its going to be located at the following.

/home/localtechrepair/WepCrack

next we need to grab all the dependencies that it needs. Since this is for ubuntu we need the ubunut core item aka aircrack-ng. (I personally grab the latest from their site)
sudo apt-get install aircrack-ng
we Next need the GtkGui packages.
sudo apt-get install gtk-sharp2 libncurses5-dev gettext
next since we got all the dependencies this is where I had hit a road block after running .

./wepcrack 
from the terminal it came back with some runtime errors. The error I got was  the following:
Unhandled Exception: System.MissingMethodException: Method not found: 'System.Type.op_Inequality'.
This after a little bit of research is a error in how it is compiling at runtime. So if we just edit the wepcrack-debug file in the WepCrack folder and add --runtime=v4.0 to the string we can get it to run with out any errors.

you want your string to look like

MONO_DISABLE_SHM=1 MONO_TRACE_LISTENER=Console.Error exec mono --runtime=v4.0  --debug  "./GWepCrackGui.exe" "$@"
 The key is the arg runtime being version 4.0 which is what it needs to run particular system types,



I Hope this helps you guys get your Wepcrack started so you can get that "Auditing" done.

Thanks for Reading,
-Local Tech Repair Admin

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