So let's have fun:
Open Applications > Internet > Desktop Sharing
When you open it you will find different options, sure the first thing I recommend is: Require the user to enter this password: ************ You do not want to leave it in blank and somebody take your hacking machine and begin to use it illegally, no.
In my case I selected the following options, you can desire the ones you desire. Look!!! I cleared the option you must confirm each access to this machine, why? Because I am not over the Hypver-V and I will be accessing from my laptop.
Now you will need to download VNC viewer and try to connect from any Windows/Linux (GUI) machine:
From there you can do what ever you want, second machine is good, because allow you to run tools that require time and processor without slowing down your main laptop/computer.
Happy hacking fun.