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

/6

No solved challenges yet.

Sign In to view your player stats

Today's Challenge
tchentchen
Not so Pyf**k
Misc
Medium
55 solves
Submissions (latest 3)
bpaul

SOLVED!

Aug 10, 1:19 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🌱
2,086 solves
Upcoming challenges reveal the , , and in advance.
Prev

Aug 2026

Next
Solved
Unsolved
Upcoming
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
tchentchen
RFC100008
Web
Easy🌱
120 solves
28
2501
One More Approval
Crypto
Medium
59 solves
29
2501
zen.zip
Misc
Medium
63 solves
30
2501
Anyrunner
Misc
Medium
56 solves
31
tchentchen
Small Image Uploader 2
Web
Medium
57 solves
1
admin
Día Nacional de la Alpaca
Misc
Welcome🌱
165 solves
2
2501
Password, Please
Misc
Easy🌱
134 solves
3-4
arkark
Long Long Flag Printer 2026
Misc
Medium
81 solves
5
pppp4649pppp4649
Happy Birthday
Crypto
Easy🌱
85 solves
6-8
hiikunzhiikunz
AESAESAESAESAESAES
Crypto
Hard
50 solves
9-10
tchentchen
Not so Pyf**k
Misc
Medium
55 solves
 
tchentchen
Not so Pyf**k
Misc
Medium
55 solves
11
Coming soon
12
Coming soon
13
Coming soon
14
Coming soon
15
Coming soon
16
Coming soon
17
Coming soon
18
Coming soon
19
Coming soon
20
Coming soon
21
Coming soon
22
Coming soon
23
Coming soon
24
Coming soon
25
Coming soon
26
Coming soon
27
Coming soon
28
Coming soon
29
Coming soon
30
Coming soon
31
Coming soon
1
Coming soon
2
Coming soon
3
Coming soon
4
Coming soon
5
Coming soon
6
Coming soon

Want a harder challenge?

Go to B-SIDE

Writeups

power

Writeup for simpleoverflow

power

ja
simpleoverflow

14 hours ago

power

Writeup for a fact of CTF

ja

14 hours ago

kirehash

Writeup for Cache Me If You Can 2

michikusamichiya

Writeup for Leaked Flag Checker (XORing the Entire Binary!?)

Rows:

Camelid Match

Topic: Multi-Party ComputationReleased: Apr 23, 2026

89 solves
Crypto
Medium2.5

by

kakur41

kakur41

Writeups

kakur41

Writeup for Daily AlpacaHack 4/19-4/25

kakur41

author
ja

2026/04/25 15:27





tadanobutubutu

Writeup for Camelid Match

ja

2026/04/23 17:22


Daily AlpacaHackに挑戦するつくよみちゃん 04/23 crypto/Camelid Match/kakur41

ja

2026/04/23 17:33


02loveslollipop

Writeup for Camelid Match

en

2026/04/24 19:38

descriptionsolveswriteups