This was considered a hard challenge. After finding and analysing the source code we found a GQL injection. Unfortunately there is a system in place that will ban you for too many requests. So we use a modified binary search algorithm to finish in time.
Hacking Competition in China. Our team qualified for the Real World CTF finals in China organised by Chaitin Tech, which was a really awesome CTF. In this video I want to share my experience and thoughts about the event.
This challenge was part of the FLARE-On 2018 CTF. In this video we reverse engineer a basic windows .exe to find out how to win the game. At first we tried to attack the weak crypto but failed. At the end it turns out I had a bug in my code :(