Simple decryption script for Group Policy Preferences (GPP) passwords. (cpassword)
git clone https://github.com/crypt0rr/gppdecrypt0rr
./decrypt0rr.sh 'cpassword-here'
$ ./decrypt0rr.sh 'Pe81R/eXjjPtd5oJw6D0hifqz78ezVt7tD0ViS9eTg+z2dKIvfwMRbD5JPFEA26i'
Decrypted password: WhatAGreatPassword123!