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Daily AlpacaHack

A CTF challenge series with fun puzzles to enjoy every day

What is Daily AlpacaHack?

We regularly publish simple, beginner-friendly or educational CTF challenges!

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Solve each challenge within its time window to appear on the leaderboard.

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Today's Challenge
pppp4649pppp4649
Happy Birthday
Crypto
Easy🌱
21 solves
Submissions (latest 3)
labpump

SOLVED!

Aug 4, 11:01 PM

Leaderboard

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Is this your first CTF? Let's begin by tackling the first challenge released on Daily AlpacaHack.

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admin
AlpacaHack 2100
Misc
Welcome🌱
2,065 solves
Upcoming challenges reveal the , , and in advance.
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Aug 2026

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Writeups

Writeup for Long Long Flag Printer 2026

baumroll1234

ja
Long Long Flag Printer 2026

4 hours ago

michikusamichiya

Writeup for Leaked Flag Checker (XORing the Entire Binary!?)

michikusamichiya

Writeup for size limit

alpha0314sub

Writeup for Password, Please

nirvana

Writeup for Password, Please

ja

2026/08/02 16:28

Rows:

LiteAlpaca

Topic: Supply ChainReleased: Apr 17, 2026

162 solves
Misc
Easy🌱2.0

by

serioton

serioton

Something funky slipped into the litealpaca module. Can you figure out what happened?

litealpaca.tar.gz

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