ctf-writeup/RITSEC CTF 2023/Chandi Bot 4

Chandi Bot 4

Can you beat the bot?

About the Challenge

We need to have 10000 balance to buy the flag using bot discord

How to Solve?

There is a channel called #chandi-bot in their discord server, and you can enter the / character to see some commands that the bot can run.

Input /dad command first to get 1 point or you can skip this step. After that input /rps and try to bet 1 point to see the output

As you can see, we lose the game. I have tried this /rps command before and the result is we always lose to the bot. To increase the balance even though we lose, we need to input negative balance, for example -10000 and run /buy-flag command

RS{TWO_NEGATIVES_DO_MAKE_A_POSITIVE}