HKCERT CTF 2022 Postmortem (III): The Remaining Challenges

In the last part, I will include the two non-crypto challenges I wrote for HKCERT CTF 2022: Numbers go brrr and Minecraft geoguessr.

​觀塘海濱音樂噴泉 / Numbers go brrr (Reverse)

Challenge Summary

This program is generating 100 sets of random numbers and they are asking me to send something back, in exchange for a flag. Can you figure out how to get them through?

There is a nc service, and we will be given some numbers upon connecting. We are asked to send something each time the