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

C++ flag checker

Daily AlpacaHackTopic: C++Released: Jun 7, 2026

80 solves

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