Time for action – speeding up the cracking process

1. We can pre-calculate the PMK for a given SSID and wordlist using the genpmk tool with the command genpmk –f /pentest/passwords/wordlists/darkc0de.lst –d PMK-Wireless-Lab –s "Wireless Lab" as shown in the following screenshot. This creates the file PMK-Wireless-Lab that contains the pre-generated PMK:

   

2. We now create a WPA-PSK network with the passphrase sky sign (present in the dictionary we used) and capture a WPA-handshake for that network. We now use Cowpatty to crack the WPA passphrase as shown in the following screenshot:

   

3. It takes approximately 7.18 seconds for Cowpatty to crack the key, using the pre-calculated PMKs as shown in the screenshot:

   

4. We now use aircrack-ng with the same dictionary file and the cracking process takes over 22 minutes. This shows how much we are gaining because of the pre-calculation:

   

5. In order to use these PMKs with aircrack-ng, we need to use a tool called airolib-ng. We will give it the options airolib-ng PMK-Aircrack...