Is there a software that would help me to crack WiFi? I'm not doing anything illegal, we have a bet going on within our organization (I read that WiFi can be hacked).
my price is lunch (and i'm hungry) ;)
5 Answers
have a stickybeak at a program called Kismac
Works well for WEP encryption, and can support packet injection depending on your wireless chipset.
You can use the Aircrack suite on mac through darwinports. (or indeed, as mentioned, backtrack has it installed)
WEP, even without packet injection, is cracked trivially in a matter of minutes to hours on a busy network.
WPA is more difficult. What you have to do is capture a four-way handshake, and then mount an offline attack against the key. If you're lucky, you'll not even need packet injection (just wait till someone connects) A simple PSK system is pretty insecure if the key is simple (for example dictionary words, etc...) but mounts in difficulty with the length and complexity of the key. You can use John The Ripper for some serious dictionary attack on the key. If the key is something like AFK121AJSU2832 the only way you'll find is is an exhaustive key search. ie: out of luck.
If you're using some sort of authentication scheme besides PSK, I have no idea! :-)
I might be talking through my rear end, though. Have a look at the Aircrack wiki for more from people who actually know what they're talking about.
If you have OS X Lion or Mountain Lion then Kismac will have an error because Apple deprecated half of their CoreWLAN framework. I developed an OS X GUI for Aircrack-NG to hack Wi-Fi networks, it works well with WEP. It's OS X 10.7+ since Kismac works fine in Snow Leopard.
There is a special linux distribution dedicated to WIFI hacking :
It can be found in form of a live CD, so you can run it on you Mac without install anything !
4The Airport cards don't support packet injection, so it doesn't work well without a USB wireless dongle.
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