RE: MS RAS (pptp + MSCHAPv1)

["Todd Towles" <toddtowles () brookshires com>]

Don't forget about this -  http://www.securiteam.com/tools/6F00X000AU.html

Might come in handy also. Beyond your normal sniffer, I might search for other numbers that may lead to hidden backdoor 
devices.

> -----Original Message-----
> From: Maria Da Re [mailto:pentestml () yahoo it] 
> Sent: Thursday, January 27, 2005 3:41 PM
> To: pen-test () securityfocus com
> Subject: MS RAS (pptp + MSCHAPv1)
>
> Hi!
>
> I will execute a penetration test on Windows 2000 systems 
> responding in dial-up on different telephone numbers with 
> pptp protocol handled by Microsoft RAS (Routing and Remote 
> Access) server.
>
> I think to proceed with an analysis composed by these
> steps:
>
> 1) Fingerprint with ppp, trying to use&verify the many 
> authentication protocol available such as CHAP, MSCHAPv1, 
> MSCHAPv2; very probably the protocol is MS-CHAPv1.
>
> 2) Trying to take advantage of this vulnerability:
> www.securityfocus.com/bid/5807. Any suggestion? There are 
> other vulnerability?
>
> 3) Trying to bruteforcing the passwords with pptp-bruter. 
> There are other good tools for doing this?
>
> Because i can't access to the shared telephone line, i can't 
> try man in the middle attacks (decrypting credentials or 
> implement a fake server to steal
> credentials)
>
> Have you some suggestions? There are other types of attacks 
> to try or tools to use?
>
> Thanks for sharing your experience
>
> --
> M. Da Re
>
>
>               
> ___________________________________ 
> Nuovo Yahoo! Messenger: E' molto più divertente: Audibles, 
> Avatar, Webcam, Giochi, Rubrica... Scaricalo ora! 
> http://it.messenger.yahoo.it