RE: OWA configurations

["arian.evans" <arian.evans () anachronic com>]

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 

> -----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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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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