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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

Optimized expression

Daily AlpacaHackTopic: OptimizationReleased: Mar 26, 2026

127 solves
Rev

by

tan90909090

tan90909090

Writeups

Writeup for Optimized expression

paulayground

ko

2026/03/27 04:33




kakur41

Writeup for Daily AlpacaHack 3/22-3/28

ja

2026/04/04 16:56

descriptionsolveswriteups