AlpacaHack Logo

Tag: Flag Checker

Sign InSign Up
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

glibc's secret function

Daily AlpacaHackTopic: glibcReleased: Mar 3, 2026

262 solves
Rev

by

tan90909090

tan90909090

USER

SOLVED AT

i2ki

4 hours ago

2026/11/05 04:59

2026/11/04 19:41

2026/11/03 15:55

2026/11/03 06:33

2026/11/01 14:05

2026/10/30 07:23

2026/10/30 03:27

2026/10/28 12:13

2026/10/08 02:53

2026/10/05 10:40

2026/09/29 01:54

2026/09/29 01:40

2026/09/25 07:00

2026/09/23 02:03

2026/09/18 01:51

2026/09/14 14:42

2026/09/10 11:52

2026/09/08 08:12

2026/08/30 14:33

2026/08/27 15:22

2026/08/26 03:33

2026/08/23 07:09

2026/08/22 15:53

2026/08/20 11:25

Rows:

descriptionsolveswriteups