#substitution-cipher CTF challenges

15 CTF challenges using substitution-cipher from 12 CTFs (2021–2024), 15 with writeups. Mostly Crypto (80%) and Reverse (13%).

Crypto · 12 Reverse · 2 Misc · 1

Often combined with

#bitplane-steganography 1 #atbash 1 #embedded-key 1 #dancing-men-cipher 1 #futurama-alphabet 1 #brainfuck 1 #esolang 1 #frequency-analysis 1 #cpp-reversing 1

Challenges

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