Wireshark-users: Re: [Wireshark-users] Unable to decode WPA2

From: "Jorge L. Vazquez" <jlvazquez825@xxxxxxxxx>
Date: Wed, 07 Jan 2009 12:12:02 -0500

well, you already capture the 4 way handshake with the encryption key,
all you need is a tool capable of decrypting it, with either a
dictionary attack or rainbow tables....... I don't think wireshark can
do this


thanks
-JV
blog: www.pctechtips.org

 

Matt Roberts wrote:
> Hi,
>
> thanks for your reply.
>
> Yes I have the 4 EAPOL entries, but now what do I do with them? I'm not sure 
> what key to use from the entries I see?
>
> Thanks,
>
> Matt.
>
> --------------------------------------------------
> From: "Soh Kam Yung" <sohkamyung@xxxxxxxxx>
> Sent: Tuesday, January 06, 2009 4:44 PM
> To: "Community support list for Wireshark" <wireshark-users@xxxxxxxxxxxxx>
> Subject: Re: [Wireshark-users] Unable to decode WPA2
>
>   
>> On Tue, Jan 6, 2009 at 3:01 AM, Matt Roberts <k141@xxxxxxxxxxx> wrote:
>>     
>>> Hello all,
>>>
>>> I have spent countless hours trying to decode my own traffic using WPA2 
>>> and
>>> I need some help.
>>>
>>> My WPA2-PSK passphrase is "testpass". This is what I enter on my router
>>> configuration and my PC. I can connect to the internet no problem.
>>> My SSID is "globul".
>>>
>>> When I sniff the traffic I see the 4 EAPOL entries. I can't figure out 
>>> what
>>> to put in the wireshark 802.11 preference. I tried:
>>>
>>> wpa-pwd:testpass:globul
>>>
>>> That didn't decrypt anything.
>>>  [...]
>>>       
>> Did you capture the initial (EAPOL) 4-Way Pairwise handshake, which
>> usually happens immediately after you have associated with the
>> network?
>>
>> That handshake contains additional information required to decode the
>> WPA2-PSK encrypted traffic.
>>
>> The passphrase alone is not enough to decode WPA2-PSK traffic (which
>> is why WPA2 is more secure than WEP).
>>
>> Regards,
>> Kam-Yung
>> -- 
>> Soh Kam Yung
>> my Google Reader Shared links:
>> (http://www.google.com/reader/shared/16851815156817689753)
>> my Google Reader Shared SFAS links:
>> (http://www.google.com/reader/shared/user/16851815156817689753/label/sfas)
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