I did something super similar: In order to graduate on time I had to take an accelerated Spanish course (hard requirement despite years of Spanish in grade school and high school). Problem: The class had a pre-requisite that I hadn't taken yet. Solution: The Uni's registration system allowed for a 4 digit numeric code to be entered to bypass registration restrictions. I wrote a script to brute force that code, registered successfully and graduated on time. Muy bueno! :)
Edit: spelling