Cracking the PSK

1. Adding a –P flag in the ike-scan command will show a response with the captured hash.
2. To save the hash, we provide a filename along with the –P flag.
3. Next, we can use psk-crack with the following command:

psk-crack –b 5 /path/to/pskkey

-b is brute force mode and length is 5.

1. To use a dictionary-based attack, we use the following command with -d flag to input the dictionary file:

psk-crack –d /path/to/dictionary /path/to/pskkey

The following screenshot shows the output of the preceding command: