$ ctf42

#padding-oracle CTF challenges

9 CTF challenges using padding-oracle from 8 CTFs (2021–2025), 9 with writeups. Mostly Crypto (89%) and Pwn (11%).

Crypto · 8 Pwn · 1

Often combined with

#aes-cbc 2 #bit-flipping 1 #decryption-oracle 1 #cbc 1 #aes-ctr 1 #stack-overflow 1 #gcm 1 #ofb 1

Challenges

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Challenge CTF Weight Category Has
sea Codegate 2023 Quals – Pwn files wu 2
babypad corCTF 2021 24.92 Crypto files wu 2
restricted_oracle GPN 2025 – Crypto files wu 2
witches_symmetric_exam SECCON 2022 Quals 97.90 Crypto files wu 1
cerberus SECCON 2021 – Crypto files wu 1
ComicallyBadCrypto PatriotCTF 2022 24.52 Crypto files wu 1
PADGROUNDS TFC 2024 – Crypto files wu 1
Careless_Padding HITCON 2023 Quals 99.75 Crypto files wu 1
n1ogin N1CTF 2021 53.54 Crypto files wu 1