$ ctf42

Challenges

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

Challenge CTF Weight Category Has
steps
#diffie-hellman#custom-group-dlp
 corCTF 2024 55.00 Crypto files wu 1
two_wrongs
#quantum-circuit-reversal#brute-force
 corCTF 2024 55.00 Crypto files wu 1
cbc
#classical-cipher#cbc-mode
 corCTF 2023 36.97 Crypto files wu 1
superbox
#feistel-cipher#algebraic-cryptanalysis
 corCTF 2023 36.97 Crypto files wu 1
hidE
#rsa#common-modulus-attack
 corCTF 2022 24.92 Crypto files wu 2
luckyguess
#lcg-recovery
 corCTF 2022 24.92 Crypto files wu 1
tadpole
#lcg#modulus-recovery
 corCTF 2022 24.92 Crypto files wu 2
4096
#rsa#smooth-modulus-factorization
 corCTF 2021 24.92 Crypto files wu 3
LCG_k
#ecdsa#lcg-nonce#signature-forgery
 corCTF 2021 24.92 Crypto files src wu 1
babypad
#padding-oracle#aes-ctr
 corCTF 2021 24.92 Crypto files wu 2
babyrsa
#rsa#partial-prime-recovery
 corCTF 2021 24.92 Crypto files wu 1
bank
#quantum-cryptography#bb84
 corCTF 2021 24.92 Crypto files src wu 2
dividing_secrets
#discrete-log#quadratic-residue
 corCTF 2021 24.92 Crypto files wu 2
supercomputer
#prime-power-modulus-factorization
 corCTF 2021 24.92 Crypto files wu 2
sol_rps corCTF 2025 82.00 Crypto files wu 1
fibinary corCTF 2021 24.92 Crypto files src wu 3
corcoin corCTF 2025 82.00 Crypto files
keys corCTF 2025 82.00 Crypto files
oooo corCTF 2025 82.00 Crypto files
rules corCTF 2025 82.00 Crypto files
ssss corCTF 2025 82.00 Crypto files
sudoku corCTF 2025 82.00 Crypto files
anglerfish corCTF 2024 55.00 Crypto files
monkfish corCTF 2024 55.00 Crypto files
roots corCTF 2024 55.00 Crypto files
sooolana corCTF 2024 55.00 Crypto files
QCG-k corCTF 2023 36.97 Crypto files
eyes corCTF 2023 36.97 Crypto files
fizzbuzz100 corCTF 2023 36.97 Crypto files
fizzbuzz101 corCTF 2023 36.97 Crypto files
fizzbuzz102 corCTF 2023 36.97 Crypto files
oil-spill corCTF 2023 36.97 Crypto files
D3S corCTF 2022 24.92 Crypto files
corrupted-curves corCTF 2022 24.92 Crypto files
exchanged corCTF 2022 24.92 Crypto files src
generous corCTF 2022 24.92 Crypto files
leapfrog corCTF 2022 24.92 Crypto files
rlfsr corCTF 2022 24.92 Crypto files
threetreasures corCTF 2022 24.92 Crypto files
CRYPTO - 360 - 4096 corCTF 2021 24.92 Crypto files src