I had issues after installing Kali Linux with apt not working, ended up there were no repositories in the apt sources list, added the following line and did an apt-get update and everything started working.

Add this line to /etc/apt/sources.list

deb http://http.kali.org/kali kali-rolling main non-free contrib

Update

apt-get update

And dist upgrade

apt-get dist-upgrade

You may need to reboot.

reboot