Seth – RDP Man In The Middle Attack Tool


Seth is an RDP Man In The Middle attack tool written in Python to MiTM RDP connections by attempting to downgrade the connection in order to extract clear text credentials.

Seth - RDP Man In The Middle Attack Tool


It was developed to raise awareness and educate about the importance of properly configured RDP connections in the context of pentests, workshops or talks.

Usage of Seth RDP Man In The Middle Attack Tool

Run it like this:

Unless the RDP host is on the same subnet as the victim machine, the last IP address must be that of the gateway.

The script performs ARP spoofing to gain a Man-in-the-Middle position and redirects the traffic such that it runs through an RDP proxy. The proxy can be called separately:


Requirements for Seth RDP MiTM Attack Tool

  • python3
  • tcpdump
  • arpspoof (arpspoof is part of dsniff)
  • openssl < 1.1.0f

OpenSSL should not be too recent, as it does not support older versions of the SSL protocol and thus may be incompatible with older version of the Windows RDP client.

You can check out the full paper here:

Attacking RDP How to Eavesdrop on Poorly Secured RDP Connections

There’s also another related tool which can extract RDP sessions:

SessionGopher – Session Extraction Tool

You can download Seth for RDP MiTM here:

Seth-master.zip

Or read more here.

Posted in: Hacking Tools


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