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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
2501
Password, Please
Misc
Easy🌱
79 solves
Submissions (latest 3)
stepbystepbymyself

SOLVED!

Aug 2, 1:55 PM

nitcelcius

SOLVED!

Aug 2, 12:38 PM

Leaderboard

Try the first challenge

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🌱
2,052 solves
Upcoming challenges reveal the , , and in advance.
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Aug 2026

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tchentchen
RFC100008
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2501
One More Approval
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29
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zen.zip
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30
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Misc
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54 solves
31
tchentchen
Small Image Uploader 2
Web
Medium
50 solves
1
admin
Día Nacional de la Alpaca
Misc
Welcome🌱
101 solves
2
2501
Password, Please
Misc
Easy🌱
79 solves
3-4
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Misc
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Writeups

Writeup for Día Nacional de la Alpaca

baumroll1234

ja
Día Nacional de la Alpaca

18 hours ago

michikusamichiya

Writeup for Greetings i18n

kurgm

Writeup for Cache Me If You Can 2

ja

2026/07/31 16:13

nitcelcius

Writeup for Anyrunner

ja

2026/07/31 07:46

kurimochi

Writeup for One More Approval

ja

2026/07/29 15:27

kurimochi

Writeup for zen.zip

ja

2026/07/29 15:21

Rows:

Read Assembly

Topic: AssemblyReleased: Dec 10, 2025

355 solves
Rev
Medium3.5

by

xrekkusu

xrekkusu

Let's read assembly code!

Submit the flag as this format: Alpaca{return value of the challenge function}

asm.txt

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descriptionsolveswriteups