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Daily AlpacaHack

A daily CTF challenge with a fun new puzzle every day

What is Daily AlpacaHack?

We publish one simple, beginner-friendly or educational CTF challenge every day!

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Solve within 24 hours of release to appear on the leaderboard.

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Today's Challenge

Bounds Checking

Submissions (latest 3)

SOLVED!

May 9, 5:01 PM

SOLVED!

May 9, 4:21 PM

SOLVED!

May 9, 4:18 PM

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AlpacaHack 2100

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Jun 2046

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Writeups

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Daily AlpacaHackに挑戦するつくよみちゃん 05/08 misc/Vending Machine/baumroll1234 tsukuyomi-chan ja Vending Machine 8 hours ago
Daily AlpacaHackに挑戦するつくよみちゃん 05/07 misc/Permission Denied 3/minaminao tsukuyomi-chan ja permission denied 3 8 hours ago
Writeup for Vending Machine nozokare ja Vending Machine 9 hours ago
Writeup for permission denied 3 nozokare ja permission denied 3 9 hours ago

Rows:

Fushigi Crawler

Topic: GeneralReleased: Jan 4, 2026

367 solves

Easy

by

minaminao

Tags

looks like the crawler's requests are weird

Beginner Hint

You can solve this challenge by setting up your own server, but actually there are several convenient web services that can receive and view such http requests, allowing you to solve it easily.

fushigi-crawler.tar.gz

description solves writeups