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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

Mirage

Daily AlpacaHackTopic: LFSRReleased: May 11, 2026

137 solves
Rev

by

serioton

serioton

Writeups

Writeup for Daily AlpacaHack 5/11-5/17

labpump

ja

2026/05/19 12:12



nitcelcius

Writeup for Mirage

ja

2026/05/12 11:05


tadanobutubutu

Writeup for Mirage

ja

2026/05/11 15:30


Daily AlpacaHackに挑戦するつくよみちゃん 05/11 rev/mirage/serioton

ja

2026/05/12 15:55


descriptionsolveswriteups