PicoCTF-2021 Writeup
  • 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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README

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Last updated 2 years ago

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Write-ups for various challenges from the 2021 .

See for list of write-ups.

During the competition period, which was held between March 16th, 2021 and March 30th, 2021, I placed 25 out of 2280 (top 1.1%) among US Middle/High School students (who solved at least one challenge) as a solo player with a score of 5440 points.

Not every challenge has a corresponding writeup. I did not do any writeups for any of the challenges in the "General Skills" category since they were mostly for beginners. Additionally, there are a few challenges that I have not solved yet. I plan to complete them soon.

picoCTF competition
SUMMARY
Score Progression Graph