$ ctf42

Challenges

Category
Difficulty
CTFtime weight
–
Higher weight ≈ harder, more prestigious event.
Year
–
Must have
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31 challenges · browse all techniques

Challenge CTF Weight Category Has
Nameless
#sum-of-squares-rsa
 idekCTF 2021 24.56 Crypto files wu 2
Polyphenol
#lll (lll-lattice-reduction)
 idekCTF 2021 24.56 Crypto files wu 2
Seed_of_Life
#mt19937-seed-bruteforce
 idekCTF 2021 24.56 Crypto files wu 1
Catch idekCTF 2025 52.06 Crypto files
Diamond_Ticket idekCTF 2025 52.06 Crypto files
FITM idekCTF 2025 52.06 Crypto files
Happy_ECC idekCTF 2025 52.06 Crypto files
Happy_ECC_Revenge idekCTF 2025 52.06 Crypto files
Sadness_ECC idekCTF 2025 52.06 Crypto files
Sadness_ECC_Revenge idekCTF 2025 52.06 Crypto files
Baby_Bundle idekCTF 2024 52.06 Crypto files
Golden_Ticket idekCTF 2024 52.06 Crypto files
Heaven_or_Hell idekCTF 2024 52.06 Crypto files
OTRU idekCTF 2024 52.06 Crypto files
Seedy idekCTF 2024 52.06 Crypto files
Tensor_Galore idekCTF 2024 52.06 Crypto files
irrandomcible idekCTF 2024 52.06 Crypto files
summertime idekCTF 2024 52.06 Crypto files
chronophobia idekCTF 2023 24.56 Crypto files
cleithrophobia idekCTF 2023 24.56 Crypto files
decidophobia idekCTF 2023 24.56 Crypto files
ecrsa idekCTF 2023 24.56 Crypto files
finite-realm-of-random idekCTF 2023 24.56 Crypto files
formal-security-poop idekCTF 2023 24.56 Crypto files
megalophobia idekCTF 2023 24.56 Crypto files
primonumerophobia idekCTF 2023 24.56 Crypto files
psychophobia idekCTF 2023 24.56 Crypto files
tychophobia idekCTF 2023 24.56 Crypto files
Destroyed_RSA idekCTF 2021 24.56 Crypto files
EccRoll idekCTF 2021 24.56 Crypto files
Hashbrown idekCTF 2021 24.56 Crypto files