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Tag: Flag Checker

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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)

minaminao
·Updated May 3, 2026
Flag Checker Challenges

Ruby Flag Checker

Daily AlpacaHackTopic: RubyReleased: Jan 3, 2026

317 solves
Rev

by

hiikunz

hiikunz

USER

SOLVED AT

mena

2026/06/16 14:43

2026/06/11 15:31

2026/06/06 16:56

2026/05/27 21:34

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2026/04/24 04:21

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