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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
hiikunzhiikunz
base 16-32-64
Misc
Easy🌱
48 solves
Submissions (latest 3)
foobarfoo

SOLVED!

Sep 2, 1:44 PM

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admin
AlpacaHack 2100
Misc
Welcome🌱
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QUIZ ALPACASHOCK
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Welcome🌱
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hiikunzhiikunz
base 16-32-64
Misc
Easy🌱
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Writeups

Writeup for Flag is A+B

haruhana

ja
Flag is A+B

11 hours ago

tchen

Writeup for Xwitter

author
en

2026/08/29 05:39

alpha0314sub

Writeup for Flag is A+B

ja

2026/08/29 01:57

power

Writeup for Encoding Basics

ja

2026/08/26 12:20

power

Writeup for Bars

ja

2026/08/26 08:34

Rows:

True or False

Topic: OracleReleased: Jul 23, 2026

101 solves
Misc
Medium4.0

by

tchen

tchen

Everything comes in dualities: light and dark, day and night, true and false.

Beginner Hint
  • There is probably no way to leak the random value or the flag directly with eval.
  • In Python, True behaves almost like 1, and False behaves almost like 0. Use this fact wisely.
  • If you think you found a solution that only works with an extremely low probability, you are probably doing something wrong.
true-or-false.tar.gz

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