WiFi is Scary…

Hey everyone!

As some of you may know, I tend to have several active projects at any given moment. One of those has recently been setting up a battery powered automatic WiFi cracking rig. The objective is to passively audit wireless networks by attempting to crack them automatically.

Now, I know what you’re thinking, “why would anyone want to do that?”, “why do you care whether there are lots of WEP networks around?”, etc. The reason is simple. People assume that what they do online is secure and refuse to do anything about it. Most non tech-savvy people tend to do silly things such as leave the manufacturer’s default settings on their shiny new router (let’s be honest here, how many times have you jumped on that “linksys” network?), neglect windows updates because “it takes too long”, or install a “free” flash-based game without un-checking the box saying that you agree to send the company data about your browsing habits.

In setting up this system, I hope to show others how easy it now is to crack wireless networks. We’ve come a long way as far as mobile computing is concerned, and it’s these developments that allow me to set up this system.

For my setup, I used a Beagle Board and an inexpensive USB WiFi card made by Rosewill. I’m currently using a pre-built Ubuntu 11.04 image loaded onto a 4GB SD card. For instructions on how to get linux working on the Beagle Board, take a look at the eLinux.org wiki. In order to work with the board’s single USB port, you’ll need a USB hub so that you can connect a keyboard and the WiFi card simultaneously. Once you get everything working, you can get rid of the hub and just connect the WiFi card directly to the board. It also helps to have a USB wired NIC in order to grab updates, the aircrack-ng package, and the autocracking script we’ll be using. Once you have everything you need, you can move on to the setup, which I’ll post in a couple days!

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