Making $500 by flipping a 0 to 1

I recently found my first vulnerability in the wild. The vulnerability was a P1 and all I had to do was turn a 0 into a 1.

Photo by Moritz Erken on Unsplash

Setting up the attacker environment

The app was one that I used multiple times a week. I knew someone who worked with it a lot, and he was friends with the founder of the app. I was told that it was very secure, but I realized it was…