Usage

Download the latest release
Generate a list of possible passwords on STDOUT
Locate the masterkey.cryptomator
Feed the passwords to the cracker utility: cat passwords.txt | java -jar cracker-x.y.z-fat.jar path/to/masterkey.cryptomator

Tips

If you still have access to your vault on some other device (password saved by OS), make good use of it
I can't stress this enough: Reduce the set of possible passwords as much as you can! Try to remember the password recipe
Bruteforcing scrypt-protected passwords is a hard job for your CPU. Keep it cool to prevent thermal throttling
Next time: Use a password manager