Nmap nntp-ntlm-info NSE Script

Script Overview

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Script source code: https://github.com/nmap/nmap/tree/master/scripts/nntp-ntlm-info.nse
Script categories: default, discovery, safe
Target service / protocol: nntp, snews
Target network port(s): 119, 433, 563
List of CVEs: -

Script Description

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The nntp-ntlm-info.nse script enumerates information from remote NNTP services with NTLM authentication enabled.

Sending an MS-NNTP NTLM authentication request with null credentials will cause the remote service to respond with a NTLMSSP message disclosing information to include NetBIOS, DNS, and OS build version.

Nntp-ntlm-info NSE Script Arguments

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This is a full list of arguments supported by the nntp-ntlm-info.nse script:

smbdomain

The domain to log in with. If you aren't in a domain environment, then anything will (should?) be accepted by the server.

smbhash

A password hash to use when logging in. This is given as a single hex string (32 characters) or a pair of hex strings (both 32 characters, optionally separated by a single character). These hashes are the LanMan or NTLM hash of the user's password, and are stored on disk or in memory. They can be retrieved from memory using the fgdump or pwdump tools.

smbnoguest

Use to disable usage of the 'guest' account.

smbpassword

The password to connect with. Be cautious with this, since some servers will lock accounts if the incorrect password is given. Although it's rare that the Administrator account can be locked out, in the off chance that it can, you could get yourself in trouble. To use a blank password, leave this parameter off altogether.

smbtype

The type of SMB authentication to use. These are the possible options:

• v1: Sends LMv1 and NTLMv1.
• LMv1: Sends LMv1 only.
• NTLMv1: Sends NTLMv1 only (default).
• v2: Sends LMv2 and NTLMv2.
• LMv2: Sends LMv2 only.
• NTLMv2: Doesn't exist; the protocol doesn't support NTLMv2 alone. The default, NTLMv1, is a pretty decent compromise between security and compatibility. If you are paranoid, you might want to use v2 or lmv2 for this. (Actually, if you're paranoid, you should be avoiding this protocol altogether!). If you're using an extremely old system, you might need to set this to v1 or lm, which are less secure but more compatible. For information, see smbauth.lua.

smbusername

The SMB username to log in with. The forms "DOMAIN\username" and "username@DOMAIN" are not understood. To set a domain, use the smbdomain argument.

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To use these script arguments, add them to the Nmap command line using the --script-args arg1=value,[arg2=value,..] syntax. For example:

nmap --script=nntp-ntlm-info --script-args smbdomain=value,smbhash=value <target>

Nntp-ntlm-info NSE Script Example Usage

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Here's an example of how to use the nntp-ntlm-info.nse script:

nmap -p 119,433,563 --script nntp-ntlm-info <target>

Nntp-ntlm-info NSE Script Example Output

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Here's a sample output from the nntp-ntlm-info.nse script:

119/tcp   open     nntp
| nntp-ntlm-info:
|   Target_Name: ACTIVENNTP
|   NetBIOS_Domain_Name: ACTIVENNTP
|   NetBIOS_Computer_Name: NNTP-TEST2
|   DNS_Domain_Name: somedomain.com
|   DNS_Computer_Name: nntp-test2.somedomain.com
|   DNS_Tree_Name: somedomain.com
|_  Product_Version: 6.1.7601

Nntp-ntlm-info NSE Script Example XML Output

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Here's a sample XML output from the nntp-ntlm-info.nse script produced by providing the -oX <file> Nmap option:

 <elem key="Target_Name">ACTIVENNTP</elem>
 <elem key="NetBIOS_Domain_Name">ACTIVENNTP</elem>
 <elem key="NetBIOS_Computer_Name">NNTP-TEST2</elem>
 <elem key="DNS_Domain_Name">somedomain.com</elem>
 <elem key="DNS_Computer_Name">nntp-test2.somedomain.com</elem>
 <elem key="DNS_Tree_Name">somedomain.com</elem>
 <elem key="Product_Version">6.1.7601</elem>

Author

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• Justin Cacak

References

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• https://nmap.org/nsedoc/scripts/nntp-ntlm-info.html
• https://github.com/nmap/nmap/tree/master/scripts/nntp-ntlm-info.nse

See Also

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Visit Nmap NSE Library for more scripts.