AlpacaHack Logo
Sign InSign Up
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.

Solve stats

0

/13

No solved challenges yet.

Sign In to view your player stats

Today's Challenge
k0080k0080
what is my pointer 2
Pwn
Hard
5 solves
Submissions (latest 3)
mti

SOLVED!

Sep 26, 6:39 PM

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🌱
2,222 solves
Upcoming challenges reveal the , , and in advance.
Prev

Sep 2026

Next
Solved
Unsolved
Upcoming
Mon
Tue
Wed
Thu
Fri
Sat
Sun
 
tchentchen
Springing
Web
Medium
74 solves
1
admin
QUIZ ALPACASHOCK
Misc
Welcome🌱
137 solves
2
hiikunzhiikunz
base 16-32-64
Misc
Easy🌱
111 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
55 solves
14-15
tan90909090tan90909090
integer division
Misc
Medium
72 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
43 solves
27-30
k0080k0080
what is my pointer 2
Pwn
Hard
5 solves
 
k0080k0080
what is my pointer 2
Pwn
Hard
5 solves
1
Coming soon
2
Coming soon
3
Coming soon
4
Coming soon

Want a harder challenge?

Go to B-SIDE

Writeups

Writeup for typhoon-pythoon

baumroll1234

ja
typhoon-pythoon

51 minutes ago

Rows:

Happy New Year

Topic: WelcomeReleased: Jan 1, 2026

641 solves
Misc
Welcome🌱1.5

by

admin

🦙 < Happy New Year! The flag is the name of the animal that this service is named after.

Just answer in the format Alpaca{ + animal name (lowercase) + }.

Please sign in to submit the flag.

descriptionsolveswriteups