Go to Google and download waircut and jumpstart 

Next 

Install jumpstart in your computer (you can’t open waircut without jumpstart and .net framework v4 minimum) 

*Now open waircut in administrator mode and click scan 

*Chose a Wi-Fi you want to hack and click pixie-pixie-dust 

*Wait the Applications to get the pin 

*Now take the pin and close waircut and open jumpstart in administrator mode 

*Choose the second option and enter the pin *Click next and turn off the automatically attack (in the right bottom corner) 

*Choose the wifi you selected in waircut and click next just wait a few minutes and your computer well be automatically connected. *Now there is hundreds of way to find the connected wifi password.i’m telling you the Easy way and without any software 

 **To do so *

Open run then type ncpa.cpl and hit enter *Double click on the Wifi option 

*Select Properties 

*Then click on the security tab and tick on the show password option 

*Congratulations!Now you know your neighbor’s wifi password 

*Now you can do MITM attack to hack your Neighbor’s device 

*Notes:- 

In this method you have to try several times but if you are lucky you will get the pin in the first try. So Best of luck