PicoCTF-2021 Writeup
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PicoCTF-2021 Writeup
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README
Binary Exploitation
Binary Gauntlet 0
Binary Gauntlet 1
Stonks
What's your input?
Cryptography
Compress and Attack
Dachshund Attacks
Double DES
Easy Peasy
It is my Birthday 2
It's Not My Fault 1
Mini RSA
New Caesar
New Vignere
No Padding, No Problem
Pixelated
Play Nice
Scrambled: RSA
Forensics
Disk, disk, sleuth!
Disk, disk, sleuth! II
information
MacroHard WeakEdge
Matryoshka doll
Milkslap
Surfing the Waves
Trivial Flag Transfer Protocol
tunn3l v1s10n
Very very very Hidden
Weird File
Wireshark doo dooo do doo...
Wireshark twoo twooo two twoo...
Reverse Engineering
ARMssembly 0
ARMssembly 2
ARMssembly 3
ARMssembly 4
gogo
Hurry up! Wait!
keygenme-py
Let's get dynamic
Rolling My Own
Shop
speeds and feeds
Transformation
Web Exploitation
Ancient History
Bithug
GET aHEAD
It is my Birthday
More Cookies
Most Cookies
Scavenger Hunt
Some Assembly Required 1
Some Assembly Required 2
Some Assembly Required 3
Some Assembly Required 4
Super Serial
Web Gauntlet 2
Web Gauntlet 3
Who are you?
X marks the spot
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Pixelated

Problem

I have these 2 images, can you make a flag out of them? scrambled1.png scrambled2.png
  • ​scrambled1.png​
  • ​scrambled2.png​

Solution

  1. 1.
    Add the two images together to get the flag. This approach can be seen in the solution script.
  2. 2.
    Here is the result when the images are added together:
    Scrambled images added together
    ​

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picoCTF{0542dc1d}
Cryptography - Previous
No Padding, No Problem
Next - Cryptography
Play Nice
Last modified 9mo ago
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