Re: nmap smb-brute questions

ToddAndMargo <[email protected]> Mon, 23 Sep 2013 15:40:04 -0700
Newsgroups gmane.comp.security.basics
Message-ID <[email protected]>
On 09/17/2013 02:17 AM, Ansgar Wiechers wrote:
> On 2013-09-16 ToddAndMargo wrote:
>> When I look at my /etc/services, I get the following smb
>> services:
>>
>>        netbios-ns      137/tcp  # NETBIOS Name Service
>>        netbios-ns      137/udp
>>        netbios-dgm     138/tcp  # NETBIOS Datagram Service
>>        netbios-dgm     138/udp
>>        netbios-ssn     139/tcp  # NETBIOS session service
>>        netbios-ssn     139/udp
>>        microsoft-ds    445/tcp
>>        microsoft-ds    445/udp
>>
>> Question 1):  Why is the example only checking UDP:137,
>> and TCP:139?  Ports 137,138,139,445 are all using both
>> UDP and TCP according to /etc/services.  Is the example
>> not meant to be a good example?
>
> AFAIK was IANA practice to assign UDP and TCP port number for a service,
> regardless of which of the two protocols it actually used. NetBIOS does
> not use 137/tcp and 139/udp, so it'd be pointless to scan those ports.
>
> [...]
>> On the following command, I also get back:
>>     # nmap --script smb-brute.nse  -p 137,138,139,445 192.168.255.116
>>     ...
>>     Host script results:
>>     | smb-brute:
>>     |   administrator:<blank> => Valid credentials, account disabled
>>     |_  guest:<blank> => Valid credentials, account disabled
>>
>> Question 4): does the "Valid credentials, account disabled" mean
>> the script could not break in?
>
> Yes.
>
> Regards
> Ansgar Wiechers
>

Hi Ansgar,

    Thank you!

-T


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