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You need a couple of softwares
winpcap
winpcap
JumpStart & Dumpper v.91.2 last version
Download
Dumper
1.First you install wincap it is dos software and will work in the background.
2.Install Jumpstart it is software for cracked wi-fi.
3.install Dumper it is software for finding wireless network.
In Dumper yo need to go on WPS menu and search networks, then if you finde some with good signal (go to button Start JumpStart,of you can go manuali and insert Default Pin in JumpStart.
In Dumper software you have and BruteForse Cracking mode but it need long time to finde a password, mabe days or Month depend on password
Do not forget WinPcap, you will not be able to run other software if you do not install it
Good Luck