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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

AlpacaForm

Daily AlpacaHackTopic: .NETReleased: May 28, 2026

81 solves
Rev

by

shiragi

shiragi

Writeups

Daily AlpacaHackに挑戦するつくよみちゃん 05/28/AlpacaForm/shiragi

tsukuyomi-chan

ja

2026/05/28 15:47



nirvana

Writeup for AlpacaForm

ja

2026/05/28 21:21


tadanobutubutu

Writeup for AlpacaForm

ja

2026/05/28 15:11

descriptionsolveswriteups