Re: "hacking" a wireless ap firmware

[Jorge Augusto Senger <jorge () br10 com br>]

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There's an open-source firmware for Ovislink 1120 AP and other devices
with RTL8181 chipset that runs on Linux:
http://sourceforge.net/project/showfiles.php?group_id=147466

Jorge


David M. Zendzian wrote:
> Maybe you should check out the many tiny flash systems for APs out there
> and see how they build their ".bin" to be able to reverse engineer how
> someone else's build is.
>
> Although why reengineer a firmware, why not just reflash the device with
> your own firmware, much quicker/easier and most likely won't be noticed
> if you have that kind of access...
>
> Just google "linux linksys" and start there.
>
> david
>
> Norbert François wrote:
>
> > Hi everybody...
> >
> > After a discussion with a friend of mine, I argued that it was
> > possible to change the behaviour of a firmware, so that an attacker
> > could put a backdoor inside, for instance :S...
> >
> > Perhaps I spoke a bit quickly, 'cause now I feel a bit lost in
> > modifying the firmware :(.
> >
> > Basically, every access point proposes you to update its firmware...
> > Most of the fime, these firmware are sold in a *.bin format. After
> > having tried to search for relevant strings in the bin, disassembling
> > it and loosing time, I'm still at the same point :(.
> >
> > Do you have any experience in firmware modification ? Do you know in
> > which language firwares are written ? Maybe tryin' a decompilation
> > could help me...
> >
> > Thanks a lot
> >
> > Norbert
> >
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This List Sponsored by: Cenzic

Concerned about Web Application Security? 
Why not go with the #1 solution - Cenzic, the only one to win the Analyst's 
Choice Award from eWeek. As attacks through web applications continue to rise, 
you need to proactively protect your applications from hackers. Cenzic has the 
most comprehensive solutions to meet your application security penetration 
testing and vulnerability management needs. You have an option to go with a 
managed service (Cenzic ClickToSecure) or an enterprise software 
(Cenzic Hailstorm). Download FREE whitepaper on how a managed service can 
help you: http://www.cenzic.com/news_events/wpappsec.php 
And, now for a limited time we can do a FREE audit for you to confirm your 
results from other product. Contact us at request () cenzic com for details.
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