Penetration Testing mailing list archives
Cracking WEP and WPA keys
From: Robin Wood <dninja () gmail com>
Date: Tue, 13 Dec 2005 10:09:21 +0000
Hi I've just been on a wireless security course where there was a lot of talk about WEP keys being poor security and easily crackable. I got home and decided to put it to practice and use aircrack against my own WEP key. Using airodump and aireplay I collected 1 million IVs and set aircrack off attacking it. After around 4 hours I got bored of waiting and on another machine tried playing with aircracks debug option where you can pass sections of the key you already know. I found if I passed the whole key except the last digit it could be cracked with a fudge factor of 2, if I removed the last 2 digits then I had to up the fudge factor to 5 and up it to 8 if I removed the last 3 digits. With anything less than the fudge factor mentioned I was told that it couldn't crack the key. All the examples I've seen seem to suggest that cracking should take minutes not hours and all keys should be crackable. What experiences do other testers have? Have I done something wrong? I abandoned the full attack after 5 hours as it was running with the default fudge factor of 2 so would probably not have managed to crack the key. I've also seen a video on the Remote Exploit site showing a WPA key cracked in 10 minutes using cowpatty and a dictionary attack. How realistic is this? Robin ------------------------------------------------------------------------------ Audit your website security with Acunetix Web Vulnerability Scanner: Hackers are concentrating their efforts on attacking applications on your website. Up to 75% of cyber attacks are launched on shopping carts, forms, login pages, dynamic content etc. Firewalls, SSL and locked-down servers are futile against web application hacking. Check your website for vulnerabilities to SQL injection, Cross site scripting and other web attacks before hackers do! Download Trial at: http://www.securityfocus.com/sponsor/pen-test_050831 -------------------------------------------------------------------------------
Current thread:
- Cracking WEP and WPA keys Robin Wood (Dec 13)
- Re: Cracking WEP and WPA keys Dave Bush (Dec 13)
- Re: Cracking WEP and WPA keys Seth Fogie (Dec 13)
- Re: Cracking WEP and WPA keys Erin Carroll (Dec 13)
- Re: Cracking WEP and WPA keys Robin Wood (Dec 14)
- Re: Cracking WEP and WPA keys Robin Wood (Dec 14)
- Re: Cracking WEP and WPA keys Dave Bush (Dec 13)
- Re: Cracking WEP and WPA keys Seth Fogie (Dec 13)
- Re: Cracking WEP and WPA keys Joachim Schipper (Dec 13)
- Re: Cracking WEP and WPA keys Robin Wood (Dec 13)
- Re: Cracking WEP and WPA keys Michael Sierchio (Dec 13)
- Re: Cracking WEP and WPA keys marko ruotsalainen (Dec 14)
(Thread continues...)
- Re: Cracking WEP and WPA keys Dave Bush (Dec 13)