$ ctf42

Challenges

Category
Difficulty
CTFtime weight
–
Higher weight ≈ harder, more prestigious event.
Year
–
Must have
Reset

30 challenges · browse all techniques

Challenge CTF Weight Category Has
Bits
#rsa#lsb-oracle#discrete-log#binary-search-factoring
 CSAW 2021 Quals 20.54 Crypto files wu 3
Crack_Me
#hash-cracking#salted-sha256#hashcat
 CSAW 2021 Quals 20.54 Crypto files wu 3
Forgery
#elgamal-signature#existential-forgery#unhashed-message#mask-bypass
 CSAW 2021 Quals 20.54 Crypto files src wu 3
AES_Diffusion CSAW 2024 Quals 21.80 Crypto files
CBC CSAW 2024 Quals 21.80 Crypto files
Diffusion_Pop_Quiz CSAW 2024 Quals 21.80 Crypto files src
HexHex CSAW 2024 Quals 21.80 Crypto files
Trapdoor CSAW 2024 Quals 21.80 Crypto files src
Blocky_Noncense CSAW 2023 Quals 21.80 Crypto files
Circles CSAW 2023 Quals 21.80 Crypto files
Mental_Poker CSAW 2023 Quals 21.80 Crypto files
lottery CSAW 2023 Quals 21.80 Crypto files
Beyond_Quantum CSAW 2022 Quals 23.70 Crypto files
GottaCrackThemAll CSAW 2022 Quals 23.70 Crypto files
NotTooTaxing CSAW 2022 Quals 23.70 Crypto files
PoodleGiftShop CSAW 2022 Quals 23.70 Crypto files
Almost Xor CSAW 2017 Quals 24.61 Crypto files src
Baby Crypt CSAW 2017 Quals 24.61 Crypto files src
Feal CSAW 2014 Quals – Crypto files
cfbsum CSAW 2014 Quals – Crypto files
CRYPTO - 100 - 1 CSAW 2011 Quals – Crypto files
CRYPTO - 100 - 2 CSAW 2011 Quals – Crypto files
CRYPTO - 100 - 3 CSAW 2011 Quals – Crypto files
CRYPTO - 100 - 4 CSAW 2011 Quals – Crypto files
CRYPTO - 200 - 5 CSAW 2011 Quals – Crypto files
CRYPTO - 200 - 6 CSAW 2011 Quals – Crypto files
CRYPTO - 200 - 7 CSAW 2011 Quals – Crypto files
CRYPTO - 300 - 10 CSAW 2011 Quals – Crypto files
CRYPTO - 300 - 8 CSAW 2011 Quals – Crypto files
CRYPTO - 300 - 9 CSAW 2011 Quals – Crypto files