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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
k0080k0080
what is my pointer 2
Pwn
Hard
25 solves
Submissions (latest 3)
stepbystepbymyself

SOLVED!

Sep 28, 1:49 PM

nirvana

SOLVED!

Sep 28, 11:39 AM

Leaderboard

Try the first challenge

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

View challenge
admin
AlpacaHack 2100
Misc
Welcome🌱
2,227 solves
Upcoming challenges reveal the , , and in advance.
Prev

Sep 2026

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tchentchen
Springing
Web
Medium
74 solves
1
admin
QUIZ ALPACASHOCK
Misc
Welcome🌱
140 solves
2
hiikunzhiikunz
base 16-32-64
Misc
Easy🌱
117 solves
3-4
tan90909090tan90909090
Let's Shut Down Linux
Misc
Medium
67 solves
5
baumroll1234
6-8
minaminaominaminao
Bitflip RSA
Crypto
Hard
56 solves
 
minaminaominaminao
Bitflip RSA
Crypto
Hard
56 solves
9-11
minaminaominaminao
\^o^/
Misc
Hard
44 solves
12-13
tan90909090tan90909090
sin function vs. fsin instruction
Rev
Misc
Medium
58 solves
14-15
tan90909090tan90909090
integer division
Misc
Medium
75 solves
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
47 solves
27-30
k0080k0080
what is my pointer 2
Pwn
Hard
25 solves
 
k0080k0080
what is my pointer 2
Pwn
Hard
25 solves
1
Coming soon
2
Coming soon
3
Coming soon
4
Coming soon

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Writeups

Writeup for Leaked Flag Checker

paulayground

ko
Leaked Flag Checker

6 hours ago

gattoartz

Writeup for base 16-32-64

ja

2026/09/26 23:00

Rows:

super-tomato

Topic: Number TheoryReleased: Jan 2, 2026

460 solves
Crypto
Easy🌱3.0

by

kanon

kanon

USER

SOLVED AT

wofb

2026/09/16 05:05

2026/09/07 12:04

2026/09/04 12:58

2026/09/03 09:05

2026/09/03 03:04

2026/08/31 12:52

2026/08/31 00:30

2026/08/29 07:18

2026/08/28 15:31

2026/08/22 15:27

2026/08/19 14:03

2026/08/18 08:17

2026/08/15 17:05

2026/08/13 14:52

2026/08/11 13:19

2026/08/10 23:46

2026/08/10 23:33

2026/08/10 13:51

2026/08/04 20:01

2026/08/04 14:25

2026/08/03 20:43

2026/08/01 23:52

2026/08/01 08:56

2026/07/19 15:04

2026/07/08 08:01

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