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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
26 solves
Submissions (latest 3)
mak0tan

SOLVED!

Sep 28, 4:37 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
26 solves
 
k0080k0080
what is my pointer 2
Pwn
Hard
26 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

7 hours ago

gattoartz

Writeup for base 16-32-64

ja

2026/09/26 23:00

Rows:

Leaked Flag Checker

Topic: C, Flag CheckerReleased: Dec 4, 2025

704 solves
Rev
Easy🌱2.0

by

minaminao

minaminao

USER

SOLVED AT

paulayground

7 hours ago

16 hours ago

2026/09/23 00:10

2026/09/18 13:44

2026/09/17 07:44

2026/09/15 17:49

2026/09/11 22:15

2026/09/10 15:08

2026/09/08 01:50

2026/09/07 11:46

2026/09/07 03:24

2026/09/05 08:22

2026/09/04 02:24

2026/08/31 19:31

2026/08/31 14:27

2026/08/30 02:21

2026/08/28 14:51

2026/08/26 07:19

2026/08/24 15:21

2026/08/24 02:33

2026/08/23 07:34

2026/08/23 02:04

2026/08/21 13:11

2026/08/21 08:26

2026/08/21 04:12

Rows:

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