May 21, 2022
Responder Tool | IEMLabs

This tool is first an LLMNR and NBT-NS responder, it will answer to *specific* NBT-NS (Net BIOS Name Service) queries based on their name suffix (see: http://support.microsoft.com/kb/163409). By default, the tool will only answers to File Server Service request, which is for SMB. The concept behind this, is to target our answers, and be stealthier on the network. This also helps to ensure that we don’t break legitimate NBT-NS behaviour. You can set the -r option to 1 via command line if you want this tool to answer to the Workstation Service request name suffix.

Features

  • Built-in SMB Auth server.

Supports NTLMv1, NTLMv2 hashes with Extended Security NTLMSSP by default. Successfully tested from Windows 95 to Server 2012 RC, Samba and Mac OSX Lion. Clear text password is supported for NT4, and LM hashing downgrade when the –lm option is set. SMBv2 has also been implemented and is supported by default.

  • Built-in MSSQL Auth server.

In order to redirect SQL Authentication to this tool, you will need to set the option -r (NBT-NS queries for SQL Server lookup are using the Workstation Service name suffix) for systems older than Windows Vista (LLMNR will be used for Vista and higher). This server supports NTLMv1, LMv2 hashes. This functionality was successfully tested on Windows SQL Server 2005 & 2008.

 

Download Link:- https://github.com/lgandx/Responder/

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