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

/31

No solved challenges yet.

Sign In to view your player stats

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

SOLVED!

Aug 9, 4:51 PM

pppp4649

SOLVED!

Aug 9, 3:43 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🌱
2,083 solves
Upcoming challenges reveal the , , and in advance.
Prev

Jul 2026

Next
Solved
Unsolved
Upcoming
Mon
Tue
Wed
Thu
Fri
Sat
Sun
29
tchentchen
Nano Services
Web
Medium
90 solves
30
minaminaominaminao
Super Short System Exit
Misc
Medium
88 solves
1
admin
Alpaca Nation
Misc
Welcome🌱
286 solves
2
hiikunzhiikunz
Flag is A+B
Crypto
Easy🌱
181 solves
3
tchentchen
Lucky Redirect
Web
Easy🌱
164 solves
4
hiikunzhiikunz
Renda
Rev
Medium
123 solves
5
tchentchen
IP Blocked Secret
Web
Hard
70 solves
6
minaminaominaminao
duplicate entry
Misc
Easy🌱
165 solves
7
hiikunzhiikunz
Lazy RSA
Crypto
Medium
115 solves
8
minaminaominaminao
Let's Poly1305!
Crypto
Medium
82 solves
9
shiragishiragi
private method
Misc
Easy🌱
151 solves
10
hiikunzhiikunz
secret-table-3
Web
Medium
90 solves
11
baumroll1234
A slight mistake
Pwn
Hard
75 solves
12
tan90909090tan90909090
13
baumroll1234
Redirecting to Login Page
Web
Easy🌱
179 solves
14
tchentchen
You've Got Shlex
Misc
Medium
89 solves
15
minaminaominaminao
Let's Poly1305! 2
Crypto
Hard
66 solves
16
tchentchen
Beat the Alpaca Lord
Web
Medium
93 solves
17
pppp4649pppp4649
biribiri
Crypto
Medium
90 solves
18
tchentchen
Greetings CGI
Web
Hard
72 solves
19
hiikunzhiikunz
no win func
Pwn
Hard
81 solves
20
tchentchen
Alpaca Blog
Web
Easy🌱
127 solves
21
tan90909090tan90909090
NOP Variant
Rev
Misc
Medium
70 solves
22
arkark
jinjail
Misc
Hard
48 solves
23
tchentchen
True or False
Misc
Medium
79 solves
24
minaminaominaminao
Cache Me If You Can 2
Web
Hard
60 solves
25
k0080k0080
what-is-my-pointer
Pwn
Hard
57 solves
26
tchentchen
Greetings i18n
Web
Hard
57 solves
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
56 solves
1
admin
Día Nacional de la Alpaca
Misc
Welcome🌱
163 solves
2
2501
Password, Please
Misc
Easy🌱
132 solves

Want a harder challenge?

Go to B-SIDE

Writeups

power

Writeup for simpleoverflow

power

ja
simpleoverflow

7 hours ago

power

Writeup for a fact of CTF

ja

8 hours ago

kirehash

Writeup for Cache Me If You Can 2

michikusamichiya

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

Rows: