$ ctf42

Challenges

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

Challenge CTF Weight Category Has
Booking_Key nullconHackIM 2026 Goa – Crypto files
Going_in_circles nullconHackIM 2026 Goa – Crypto files
Matrixfun_II nullconHackIM 2026 Goa – Crypto files
TLS nullconHackIM 2026 Goa – Crypto files
Tetraes nullconHackIM 2026 Goa – Crypto files
A_slice_of_keys nullconHackIM 2025 Berlin – Crypto files
Field_trip nullconHackIM 2025 Berlin – Crypto files
Magnetic_tape nullconHackIM 2025 Berlin – Crypto files
Narrow_DES nullconHackIM 2025 Berlin – Crypto files
PKCS nullconHackIM 2025 Berlin – Crypto files
Power_tower nullconHackIM 2025 Berlin – Crypto files
Simple_ECDSA nullconHackIM 2025 Berlin – Crypto files
decryption_execution_service nullconHackIM 2025 Berlin – Crypto files
Counting nullconHackIM 2023 Goa – Crypto files
Curvy_Decryptor nullconHackIM 2023 Goa – Crypto files
Curvy_Decryptor_2 nullconHackIM 2023 Goa – Crypto files
Euclidean_RSA nullconHackIM 2023 Goa – Crypto files
PS nullconHackIM 2023 Goa – Crypto files
Sebastians_Secret_Sharing nullconHackIM 2023 Goa – Crypto files
bmpass nullconHackIM 2023 Berlin – Crypto files
breaking_news nullconHackIM 2023 Berlin – Crypto files
collector nullconHackIM 2023 Berlin – Crypto files
learn_from_your_errors nullconHackIM 2023 Berlin – Crypto files
noble_collector nullconHackIM 2023 Berlin – Crypto files
twin nullconHackIM 2023 Berlin – Crypto files
cookie_lover_reloaded nullconHackIM 2022 24.42 Crypto files
time nullconHackIM 2022 24.42 Crypto files