Slides Here: https://www.defcon.org/images/defcon-22/dc-22-presentations/Nemus/DEFCON-22-Lance-Buttars-Nemus-Intro-to-backdooring-OS.pdf

An Introduction to Back Dooring Operating Systems for Fun and Trolling
Nemus SECURITY RESEARCHER
So you want to setup a back door? Have you ever wondered how its done and what you can do to detect back doors on your network and operating systems? Ever wanted to setup a back door to prank a friend?. This presentations will do just that. We will go over the basics of back doors using SSH, NET CAT, Meterpreter and embedding back doors into custom binaries along with the logistics of accessing them after they are in place.

Nemus is a security enthusiast at night and spends his days working in the payment card industry developing RESTFul APIs for bill pay using cash payments. Lance works with open source systems, and enjoys setting up and hardening Linux systems. He has over 11 years of experience working in information technology focusing on system administration and software development and has begun to focus his career on information security. He developed a love for security at Salt Lake Community College after being immersed into it by his professors. Nemus help found the Defcon 801 hackerspace and currently holds the position on the board of directors for 801 Labs, which is the corporation that runs the DC801 hackerspace located in downtown Salt Lake City.

Twitter: @Lost_Nemus

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Nemus - An Introduction to Back Dooring Operating Systems for Fun and Trolling