Hello Kali Linux Lovers.

In this article I will show you how to add the needed repositories for Kali Linux

As you may know, Kali is a penetration Linux System based on Debian. It is developed by the Backtrack team.
If Your Kali Linux is missing repositories then,
To add repositories, open the /etc/apt/sources.list file in your favorite text editor as root, and paste the following lines:
leafpad /etc/apt/sources.list
Paste this:

deb http://http.kali.org/ /kali main contrib
non-free
deb http://http.kali.org/ /wheezy main contrib
non-free
deb http://http.kali.org/kali kali-dev main contrib
non-free
deb http://http.kali.org/kali kali-dev
main/debian-installer
deb-src http://http.kali.org/kali kali-dev
main contrib non-free
deb http://http.kali.org/kali kali main
contrib non-free
deb http://http.kali.org/kali kali
main/debian-installer
deb-src http://http.kali.org/kali kali main
contrib non-free
deb http://security.kali.org/kali-security
kali/updates main contrib non-free
deb-src
http://security.kali.org/kali-security kali/updates main contrib
non-free
deb http://repo.kali.org/kali kali-bleeding-edge main

Save and update the system:
sudo apt-get update
Now, you are ready to hack.