Hi there, Last weekend, I played a CTF for fun. Here are the writeups of the tasks that I solved (Reverse Engineering category) [RE 100] Help Jimmy [RE 150] The Activator [RE 150] The Defuser [RE 200] KrackMe 1.0 [RE 250] Fan [RE 250] Take RISC five times [RE 400] Stegorev [RE 100] Help Jimmy It was a 64-bit Linux elf binary having a simple implementation where the player has to choose between going to Jungle or Sea and regardless of any decision, it ended up being attacked by tigers or pirates or an invalid choice and resulting in not getting the flag.