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Re: NSE script for OS identification / clarification using Netbios/SMB
From: Fyodor <fyodor () insecure org>
Date: Wed, 28 Nov 2007 14:12:57 -0800

On Wed, Nov 28, 2007 at 02:30:19PM -0500, Matthew Watchinski wrote:

The attached script written by Judy Novak, utilizes Netbios requests and
SMB AndX responses to help determine the OS and clarify the OS running
on a host that has Netbios and SMB running.  This can be helpful if OS
identification returns multiple possible fingerprints for a given
windows system.

Thanks Matt, this looks great.  It worked against a Linux box running
Samba which I tested it against:

Host flog ( appears to be up ... good.
Interesting ports on flog (
139/tcp open          netbios-ssn
137/udp open|filtered netbios-ns

Host script results:
|_ Discover OS Version over NetBIOS and SMB: Unix

I have checked it into SVN for the next release.  We are now up to 40
NSE scripts shipping with Nmap.


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