Get the Whitepaper called Attacking RDP – How to Eavesdrop on Poorly Secured RDP Connections.
You can download it from the following link: https://packetstormsecurity.com/files/download/141664/attacking-rdp.pdf
Source: https://packetstormsecurity.com/files/141664/Attacking-RDP-How-To-Eavesdrop-On-Poorly-Secured-RDP-Connections.html