Add Kali Sources to Debian

This lets you install Ettercap, SET, SSLstrip, Wifite, and more.

1. sudo gedit /etc/apt/sources.list
2. Add these to the bottom of the list:

Kali Sources
deb http://http.kali.org/kali kali main non-free contrib
deb http://security.kali.org/kali-security kali/updates main contrib non-free
deb-src http://http.kali.org/kali kali main non-free contrib
deb-src http://security.kali.org/kali-security kali/updates main contrib non-free

3. Open Terminal and paste these lines (One at a time)

gpg --keyserver pgpkeys.mit.edu --recv-key ED444FF07D8D0BF6
gpg -a --export ED444FF07D8D0BF6 | sudo apt-key add -
sudo apt-get update && sudo apt-get dist-upgrade && sudo apt-get upgrade