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Daily AlpacaHack

A daily CTF challenge with a fun new puzzle every day

What is Daily AlpacaHack?

We publish one simple, beginner-friendly or educational CTF challenge every day!

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Solve within 24 hours of release to appear on the leaderboard.

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Today's Challenge
shiragishiragi
Guess IP
Misc
Easy🌱
78 solves
Submissions (latest 3)
will

SOLVED!

Jun 8, 9:57 AM

kakur41

SOLVED!

Jun 8, 9:00 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🌱
1,863 solves
Upcoming challenges reveal the , , and in advance.
Prev

Jan 2026

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29
kanonkanon
one-p-rsa
Crypto
Easy🌱
264 solves
30
soon-haarisoon-haari
RBG
Crypto
Very Hard
128 solves
31
admin
108
Misc
Easy🌱
320 solves
1
admin
Happy New Year
Misc
Welcome🌱
603 solves
2
kanonkanon
super-tomato
Crypto
Easy🌱
424 solves
3
hiikunzhiikunz
Ruby Flag Checker
Rev
Easy🌱
315 solves
4
minaminaominaminao
Fushigi Crawler
Web
Easy🌱
402 solves
5
kurenaifkurenaif
Encoding Basics
Crypto
Misc
Easy🌱
343 solves
6
minaminaominaminao
jailiaj
Misc
Easy🌱
301 solves
7
hiikunzhiikunz
Square RSA
Crypto
Medium
252 solves
8
arkark
secret-table
Web
Medium
295 solves
9
hiikunzhiikunz
SwapSwap
Misc
Easy🌱
312 solves
10
theoremoontheoremoon
RSA2026
Crypto
Medium
228 solves
11
keymoonkeymoon
crazython
Rev
Medium
206 solves
12
hiikunzhiikunz
Basic Buffer Overflow
Pwn
Medium
200 solves
13
tchentchen
I wanna be the Admin
Web
Easy🌱
317 solves
14
arkark
free-comment
Misc
Hard
159 solves
15
hiikunzhiikunz
Five Alpacas
Crypto
Easy🌱
215 solves
16
k0080k0080
Short Writer
Pwn
Hard
133 solves
17
minaminaominaminao
Base Length
Misc
Medium
164 solves
18
hiikunzhiikunz
dice roll
Web
Medium
218 solves
19
chocoruskchocorusk
ChaChaCha
Crypto
Medium
173 solves
20
k0080k0080
system-v
Rev
Hard
122 solves
21
arkark
dockerstack
Misc
Easy🌱
191 solves
22
hiikunzhiikunz
Animal Viewer
Web
Medium
166 solves
23
minaminaominaminao
Bashrunner
Misc
Hard
127 solves
24
yu212yu212
Paca Paca Authenticator
Crypto
Medium
141 solves
25
tchentchen
Stateless Auth
Web
Medium
179 solves
26
keymoonkeymoon
git gc
Misc
Medium
163 solves
27
chocoruskchocorusk
ToyPQC
Crypto
Hard
114 solves
28
tchentchen
No JS
Web
Medium
144 solves
29
k0080k0080
shellcode-101
Pwn
Medium
150 solves
30
yu212yu212
Linear Coffee Generator
Crypto
Hard
119 solves
31
arkark
optimal-sort
Misc
Hard
107 solves
1
admin
Camelidae
Misc
Welcome🌱
422 solves

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