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!

Join Anytime

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

Not a Competition

Discussion with friends or AI is welcome (account sharing is prohibited).

Solution Sharing Rules

Sharing solutions is allowed only after the challenge period has ended.

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Today's Challenge

Submissions (latest 3)

sikoderu

SOLVED!

Oct 1, 4:35 AM

cqbtq

SOLVED!

Oct 1, 3:49 AM

mamonbo

SOLVED!

Oct 1, 3:17 AM

Leaderboard

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Try the first challenge

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

Upcoming challenges reveal the , , and in advance.

Oct 2026

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k0080

what is my pointer 2

Pwn

Hard

37 solves

admin

Baby Alpaca

Misc

Welcome🌱

40 solves

tan90909090

Planned topic.NET

Rev

Easy🌱

Coming soon

Want a harder challenge?

Go to B-SIDE

Writeups

Writeup for what is my pointer 2

lumma

what is my pointer 2

6 hours ago

Writeup for what is my pointer 2

nirvana

what is my pointer 2

8 hours ago

[AlpacaHack] Flag is A + B

michikusamichiya

Flag is A+B

18 hours ago

[AlpacaHack] typhoon-python writeup

michikusamichiya

typhoon-pythoon

2026/09/29 12:06

Writeup for Leaked Flag Checker

paulayground

Leaked Flag Checker

2026/09/28 09:24

Writeup for RFC100008

umachaba

RFC100008

2026/09/28 05:48

Writeup for typhoon-pythoon

lumma

typhoon-pythoon

2026/09/27 01:17

Writeup for base 16-32-64

gattoartz

base 16-32-64

2026/09/26 23:00

Writeup for typhoon-pythoon

baumroll1234

typhoon-pythoon

2026/09/26 22:06

Writeup for The 3rd

umineko

The 3rd

2026/09/26 17:39

Rows:

Image Python

Topic: JailReleased: Apr 24, 2026

88 solves

Misc

Medium4.5

tchen