Shellter has been added into the repositories of BackBox. A famous Linux distro dedicated to security testing.

Make sure you have the following two entries in your system’s software sources:

deb http://ppa.launchpad.net/backbox/four/ubuntu trusty main
deb-src http://ppa.launchpad.net/backbox/four/ubuntu trusty main

You can install Shellter with the following two commands:

apt-get update
apt-get install shellter

Enjoy,
kyREcon