Tag: Flag Checker

Flag Checker

Flag checkers are a common type of challenge in the Reverse Engineering category.

An executable or script called a flag checker takes the player's input and outputs whether that input matches the flag.

These challenges may also be called "crackmes" in a broader sense. (automatically translated from Japanese)

·Updated May 3, 2026

Flag Checker Challenges

Tags

fvm

8 solves

ptr-yudai