2020 EUROPEAN CYBER SECURITY CHALLENGE

3-7 November 2020

Vienna, Austria

Security By Design

Event ECSC2019
Tags Code review
Difficulty
Medium
Additional Info In the solution.zip file you can find a serial generating script that generates valid numbers
Description

A secure application is using a unique algorithm to validate Serial Numbers in a PHP Web Application.
You were able to gain access to the PHP source code of the application.

Analyze the Serial Number Validation method algorithm and try to find valid serial numbers.

Other artefacts
Tasks

Generate valid serial numbers that can pass the checking function