RE: Wireless Pen Test

["Rui Pereira (WCG)" <wavefront1 () shaw ca>]

Aircrack-ng is an 802.11 WEP and WPA-PSK keys cracking program. WPA and WPA2
with PSK's can be cracked the way you describe. BUT if you are using WPA
Enterprize type implementation (with an authentication server like RADIUS),
there are no PSK's to crack so your method will not work. Even the recent
attack on WPA with TKIP will not work against wireless networks configured
this way (and using AES instead of TKIP provides even better protection). 

Thank You
 
Rui Pereira,B.Sc.(Hons),CIPS ISP,CISSP,CISA,CWNA,CPTS/CPTE
Principal Consultant
WaveFront Consulting Group
 
wavefront1 () shaw ca | www.wavefrontcg.com | 1 604 961 0701
 

-----Original Message-----
From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On
Behalf Of m0rebel
Sent: November 26, 2008 10:01 PM
To: anshuman sharma
Cc: pen-test () securityfocus com
Subject: Re: Wireless Pen Test

WPA and WPA2 both can be cracked with aircrack-ng. They both have the
same weakness, and in terms of using aircrack, they're exactly the
same thing. You need to sniff traffic on the WPA or WPA2 network until
you capture the 4-way handshake when someone is connecting. If someone
is already connected, you can speed this up by kicking them off the
network with a deauth attack and wait for them to reconnect, if you
don't mind an active attack. Once you have the handshake, you can
crack it by doing a dictionary attack (aircrack-ng -w dictionary.txt
dump.cap).

If your client is using either WPA or WPA2 and a really long,
complicated, hard-to-guess password that's not in anyone's dictionary
files (say, 40 random characters), then I'd say you can give them
reasonable assurance that it's secure from the outside.

m0rebel

On Wed, Nov 26, 2008 at 10:37 AM, anshuman sharma <anshuman251 () gmail com>
wrote:
> Hi All,
>
> Is there any tool available to break WAP2 encryption (I searched a lot
> but was not able to find any). I know using Aircrack (Airodump and
> Aireplay), WEP and WPA key can be breaked. But if the encyption is
> WPA2 can we give a reasonable assurance to the client that the Wifi
> network is secure from outside.
>
> Thanks and Regards
> Anshuman
>
> ------------------------------------------------------------------------
> This list is sponsored by: Cenzic
>
> Security Trends Report from Cenzic
> Stay Ahead of the Hacker Curve!
> Get the latest Q2 2008 Trends Report now
>
> www.cenzic.com/landing/trends-report
> ------------------------------------------------------------------------

------------------------------------------------------------------------
This list is sponsored by: Cenzic

Security Trends Report from Cenzic
Stay Ahead of the Hacker Curve!
Get the latest Q2 2008 Trends Report now

www.cenzic.com/landing/trends-report
------------------------------------------------------------------------

No virus found in this incoming message.
Checked by AVG - http://www.avg.com 
Version: 8.0.176 / Virus Database: 270.9.10/1815 - Release Date: 11/27/2008
9:02 AM


------------------------------------------------------------------------
This list is sponsored by: Cenzic

Security Trends Report from Cenzic
Stay Ahead of the Hacker Curve!
Get the latest Q2 2008 Trends Report now

www.cenzic.com/landing/trends-report
------------------------------------------------------------------------