Re: NULL session tools Linux

From: Paul Asadoorian (paul@pauldotcom.com)
Date: Tue Sep 26 2006 - 12:29:38 EDT


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Hi David,

I never found a truly reliable way to test for null sessions from Linux.
 You could try using "smbclient" (part of Samba):

$ smbclient -I 192.168.1.31 -L MONKEY -N -U ""
Domain=[FOO] OS=[Windows 5.1] Server=[Windows 2000 LAN Manager]

        Sharename Type Comment
        --------- ---- -------
Error returning browse list: NT_STATUS_ACCESS_DENIED
Domain=[FOO] OS=[Windows 5.1] Server=[Windows 2000 LAN Manager]

        Server Comment
        --------- -------

        Workgroup Master
        --------- -------

If the host was vulnerable you would see the share information, instead
you see "NT_STATUS_ACCESS_DENIED". As I stated before, I don't know how
accurate this method will, but I supposed you could script it in
conjunction with "nbtscan" [1] and find out really quick :)

I found that hunt was the most reliable tool for identifying null
sessions[2].

Paul

[1] http://www.unixwiz.net/tools/nbtscan.html

[2] http://www.brown.edu/Facilities/CIS/CIRT/help/netbiosnull.html

David Huemer wrote:
> Hi!
>
> Does anyone know some good Linux tools for enumerating NULL sessions?

- --
Paul Asadoorian
Email: paul@pauldotcom.com
Web: http://pauldotcom.com
IRC: #pauldotcom | irc.freenode.net

# rm -fr *clothing* ; ./hack.sh

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