# Play Me - 200 (Vidya)
For this challenge we are presented with a gameboy rom, and the objective is to win the game to get the flag.
I used the BGB gameboy emulator to run the game. It allows me to modify ram during gameplay. Using the cheat searcher, I try to find the ram address responsible for the characters y axis, so that I can make the character hover in the sky.
This is done by playing the character at different heights, and then using the cheat searcher to find the appropriate ram address.
![](https://raw.githubusercontent.com/jeijii/Tenable-CTF-21-Writeups/main/playme/playme4.jpg)
Three addresses appeared which I figured was storing the height of the character. However, upon looking at the addresses in the debugger, it was evident that the addresses are not what I was looking for.
However, I saw an address, at C0AE, that increases as the characted jumped, and decreases when my character falls. So, I decided to freeze the address with the value of 10.
![](https://raw.githubusercontent.com/jeijii/Tenable-CTF-21-Writeups/main/playme/playme5.jpg)
Now, I am able to hover across the whole game.
![](https://raw.githubusercontent.com/jeijii/Tenable-CTF-21-Writeups/main/playme/playme6.jpg)
Flag is displayed upon reaching the end of the map.
![](https://raw.githubusercontent.com/jeijii/Tenable-CTF-21-Writeups/main/playme/playme7.jpg).