$ ctf42

#block-cipher CTF challenges

3 CTF challenges using block-cipher from 3 CTFs (2021–2024), 3 with writeups. Mostly Crypto (67%) and Reverse (33%).

Crypto · 2 Reverse · 1

Often combined with

#key-recovery 1 #chosen-plaintext 1 #substitution-permutation-network 1 #aes 1 #meet-in-the-middle 1 #anti-debugging 1

Challenges

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Challenge CTF Weight Category Has
A_Simple_SP_Box
#substitution-permutation-network#block-cipher#chosen-plaintext#key-recovery
 DCTF 2021 – Crypto files wu 2
Tridea
#meet-in-the-middle (mitm)#block-cipher#anti-debugging
 VolgaCTF 2024 Quals 35.91 Reverse files wu 1
mom_can_we_have_AES
#aes#block-cipher
 UIUCTF 2022 – Crypto files wu 1