Re: OWA configurations

[Rogan Dawes <discard () dawes za net>]

arian.evans wrote:

> The form of authentication is NTLM over HTTP. Integrated
> Windows Authentication uses Kerberos where possible (e.g.
> --if meets client dependencies like >= IE 5.5, W2K, etc.)
> and where not prompts with a basic auth type box.
>
> You can submit only 'domain\user' and 'password'. In AD
> domains you can often use 'user () domain tld' as well for
> the username (in addition to the password). I do not
> recall ever having to submit domain-field exclusively.
>
> You are correct, this is a result of server-side
> configurations done to IIS to enable 'integrated auth'.
> It has been called "integrated authentication" for
> quite some time...at least prior to IIS 4 IIRC.
>
> You should be able to brute this just fine with Brutus,
> Hydra, look at Cain & Able as well, but you will have
> to prepend 'domain\' to your username dictionary entries.
>
> For more, google for Amit Klein's papers on NTLM over
> HTTP and his papers will also link to some of the
> work at decomposing the specification for NTLM.
>
> -ae 
>
>  

For what it is worth, the current (source only) version of WebScarab 
available on my personal website can do NTLM authentication, as well as 
scripting arbitrary multi-threaded requests using the Scripted plugin.

Combining these two features, you can implement your own brute force 
scripts. The key to brute forcing NTLM using WebScarab is to know that 
if you specify a Authorization header of "NTLM 
base64(domain\user:password)", WebScarab will automatically decompose 
that and use those credentials in an NTLM handshake before sending the 
request.

Rogan

> > -----Original Message-----
> > From: Justin Dearing [mailto:justind () invision net] 
> > Sent: Friday, March 10, 2006 9:42 AM
> > To: pen-test () lists securityfocus com
> > Subject: RE: OWA configurations
> >
> > This form of authentication is a Microsoft proprietary 
> > extension to http
> > that apparently uses some kind of challenge response it was 
> > called NTML
> > but in IIS 6 was rebranded Integrated Windows Authentication.
> >
> > http://www.microsoft.com/technet/prodtechnol/WindowsServer2003
> > /Library/I
> > IS/523ae943-5e6a-4200-9103-9808baa00157.mspx
> >
> > The previous technote provides some information. It does not go into
> > protocol implementation details but will give you a bit more info to
> > know what to ask google. 
> >
> > As to how to brute force test it, I would recommend getting a bute
> > forcer that supports that protocol.
> >
> >
> > -----Original Message-----
> > From: Bryan Miller [mailto:BMiller () sycomtech com] 
> > Sent: Friday, March 10, 2006 9:30 AM
> > To: pen-test () lists securityfocus com
> > Subject: OWA configurations
> >
> > In doing pen tests against various configurations of OWA, I have seen
> > two major flavors.  One, you receive the standard 
> > authentication request
> > for a username and password.  In those cases if you have a specific
> > domain you can prepend it to the domain name.  Other times you see the
> > request for a username, password and domain name as three separate
> > inputs.  In the second case can I prepend the domain name to the login
> > name, or am I required to enter all 3 pieces of information 
> > separately?
> >
> >
> > Am I correct in assuming that the choice of which form of 
> > authentication
> > you receive is set by the administrator?  If I have to enter all 3
> > pieces of information separately, does anyone know of a tool 
> > to do this?
> > Brutus/Hydra....tried both and neither has the option of 
> > specifying the
> > domain name as part of the brute force attempt.
> >
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This List Sponsored by: Cenzic

Concerned about Web Application Security? 
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: 
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And, now for a limited time we can do a FREE audit for you to confirm your 
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