FreedomCTF Spring 2021
47 challenges with 56 published solutions between them. No writeups were ever filed against this event's listing, so its solutions were found in public repositories instead. Each link is pinned to the commit it was read from.
The event listingUncategorised46
The upstream scoreboard did not say, so neither do we.
Prompt
4 official solutionsAlso written up in: alex-bellon/ctf-challenges, alex-bellon/ctf-challenges, alex-bellon/ctf-challenges, alex-bellon/ctf-challenges
Chaffing And Winnowing
2 official solutionsAlso written up in: alex-bellon/ctf-challenges, alex-bellon/ctf-challenges
Diffie Hellman
2 official solutionsAlso written up in: alex-bellon/ctf-challenges, alex-bellon/ctf-challenges
Diffie Hellman Brute Force
2 official solutionsAlso written up in: alex-bellon/ctf-challenges, alex-bellon/ctf-challenges
Quantum Money
2 official solutionsAlso written up in: alex-bellon/ctf-challenges, alex-bellon/ctf-challenges
Shifted Image
2 official solutionsAlso written up in: alex-bellon/ctf-challenges, alex-bellon/ctf-challenges
Add Multiply
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Baconian Cipher
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Base64
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Book Cipher
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Caesar
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Caesar Cipher
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Also written up in: alex-bellon/ctf-challenges
Cipher Gauntlet
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Also written up in: alex-bellon/ctf-challenges
Exif Data
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Also written up in: alex-bellon/ctf-challenges
File Signature
1 official solutionAlso written up in: alex-bellon/ctf-challenges
From Dad
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Also written up in: alex-bellon/ctf-challenges
Generator
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Gifar
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Git History
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Image Diff
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Images
1 official solutionAlso written up in: Aviksaikat/WalkThroughs
Also written up in: alex-bellon/ctf-challenges
Also written up in: alex-bellon/ctf-challenges
Musical Cryptogram
1 official solutionAlso written up in: alex-bellon/ctf-challenges
One Time Pad
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Original
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Also written up in: alex-bellon/ctf-challenges
Pdf Censorship
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Pdf Js
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Ports
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Repeated Xor
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Run Binary
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Song of Flags
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Stonks Secrets
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Strings
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Also written up in: alex-bellon/ctf-challenges
View Source
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Word Doc
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Wrong File Type
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Also written up in: alex-bellon/ctf-challenges
Zero Width Characters
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Zip Cracking
1 official solutionAlso written up in: alex-bellon/ctf-challenges
Cryptography1
Recover a plaintext or a key from something that was supposed to protect it. In practice: identify the scheme, find the parameter the author got wrong, exploit it.
Encrypt
2 official solutionsAlso written up in: Aviksaikat/WalkThroughs, alex-bellon/ctf-challenges