Metasploitable

Metasploitable is a kind of vulnerable Linux virtual machine image for penetration testing. It is Debian 32bit based operation system, and ready for usage without any configuration... It contains some payloads, encoder, exploit tools in it.
You can have a search on https://www.vulnhub.com/ or you can directly download the latest version from the following link: https://www.vulnhub.com/entry/metasploitable-2,29/
Do not forget to activate PAE/NX feature on the virtual environment under the System/Processor options.

Keep up-to-date:

Do with the sudo user:
apt upgrade
apt install metasploit-install


Let the attack begin!

Kali Linux: first things to do after installation

Adding mirros:

Open the terminal as sudo user and;

apt update

apt upgrade

Mirrors will be added automaticly after above operations...

If you are facing keyboard issue(I am usually facing, because of the usage of *.ova virtual images), you may want to change the keyboard settings. to do this, you can use following instruction;

setxkbmap tr

***"tr" for turkish...

One more tricky thing, to use kali in virtual box in full screen mode, appyl following instructions too;

apt install virtual box

You will see a list of available extensions, install below item;

apt install virtualbox-guest-x11

The name of this item may change depanding on the virtualbox version, year, etc... just to know there is a possibility for full screen mode, you may need additional search on the internet...