GoCrackMe1 (Huntress CTF 2024)

Author: @HuskyHacks

TENNNNNN-HUT!

Welcome to the Go Dojo, gophers in training!

Go malware is on the rise. So we need you to sharpen up those Go reverse engineering skills. We’ve written three simple CrackMe programs in Go to turn you into Go-binary reverse engineering ninjas!

First up is the easiest of the three. Go get em!

First, strings. Nothing. Then straight to Binary Ninja. Since this is a Golang programme, there was a lot of debugging info available. I quickly went to the main function, and then saw a string being copied to a buffer.

Then, a loop that XORs each character by 0x56.

Throw this two information into CyberChef and done.