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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
haihuiliyuyuan
typhoon-pythoon
Rev
Medium
30 solves
Submissions (latest 3)
gin

SOLVED!

Sep 25, 2:40 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🌱
2,221 solves
Upcoming challenges reveal the , , and in advance.
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Sep 2026

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tchentchen
Springing
Web
Medium
74 solves
1
admin
QUIZ ALPACASHOCK
Misc
Welcome🌱
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2
hiikunzhiikunz
base 16-32-64
Misc
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3-4
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Misc
Medium
64 solves
5
baumroll1234
6-8
minaminaominaminao
Bitflip RSA
Crypto
Hard
56 solves
 
minaminaominaminao
Bitflip RSA
Crypto
Hard
56 solves
9-11
minaminaominaminao
\^o^/
Misc
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44 solves
12-13
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sin function vs. fsin instruction
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14-15
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integer division
Misc
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16-18
edwowmathedwowmath
neighboRhood_diStAnce
Crypto
Hard
42 solves
19-21
hiikunzhiikunz
nested eval
Misc
Hard
50 solves
 
hiikunzhiikunz
nested eval
Misc
Hard
50 solves
22-24
2501
The 3rd
Crypto
Hard
36 solves
25-26
haihuiliyuyuan
typhoon-pythoon
Rev
Medium
30 solves
27
Coming soon
28
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29
Coming soon
30
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1
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2
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3
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Writeups

Writeup for The 3rd

baumroll1234

ja
The 3rd

19 hours ago

Rows:

Vending Machine: Revised Version

Topic: PythonReleased: Sep 5, 2026

90 solves
Misc
Easy🌱2.0

by

baumroll1234

USER

SOLVED AT

meatyhippo

5 hours ago

8 hours ago

2026/09/22 12:15

2026/09/20 06:14

2026/09/18 03:50

2026/09/18 01:09

2026/09/17 19:26

2026/09/17 13:01

2026/09/17 04:48

2026/09/16 10:27

2026/09/15 12:06

2026/09/15 11:51

2026/09/15 09:17

2026/09/15 06:37

2026/09/13 05:59

2026/09/13 00:37

2026/09/12 21:06

2026/09/11 05:50

2026/09/10 19:11

2026/09/10 06:47

2026/09/09 14:15

2026/09/09 11:56

2026/09/08 16:07

2026/09/08 11:42

2026/09/08 09:59

Rows:

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