Question

How to hack an wifi using aircrack?​

Answer 1

This tutorial walks you through cracking WPA/WPA2 networks which use pre-shared keys. I recommend you do some background reading to better understand what WPA/WPA2 is. The Wiki links page has a WPA/WPA2 section. The best document describing WPA is Wi-Fi Security - WEP, WPA and WPA2. This is the link to download the PDF directly. The WPA Packet Capture Explained tutorial is a companion to this tutorial.

Answer 2

Answer:

Watch tutorials.......

You can use apps too, for this purpose.....

I did it once.....

hehehe