$ ctf42

Challenges

Category
Difficulty
CTFtime weight
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Higher weight ≈ harder, more prestigious event.
Year
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26 challenges · browse all techniques

Challenge CTF Weight Category Has
You_get_extra_information_2 AmateursCTF 2023 24.54 Crypto files wu 1
addition AmateursCTF 2025 – Crypto files
addition_2 AmateursCTF 2025 – Crypto files
addition_3 AmateursCTF 2025 – Crypto files
aescure AmateursCTF 2025 – Crypto files
division AmateursCTF 2025 – Crypto files
triangulate AmateursCTF 2025 – Crypto files
uncrackable AmateursCTF 2025 – Crypto files
decryption_as_a_service AmateursCTF 2024 24.54 Crypto files
drunk_lcg AmateursCTF 2024 24.54 Crypto files
ecsuses AmateursCTF 2024 24.54 Crypto files
faked_onion AmateursCTF 2024 24.54 Crypto files
less_suspicious_rsa AmateursCTF 2024 24.54 Crypto files
pilfer_techies AmateursCTF 2024 24.54 Crypto files
unsuspicious_rsa AmateursCTF 2024 24.54 Crypto files
Compact_XORs AmateursCTF 2023 24.54 Crypto files
Excuse_me AmateursCTF 2023 24.54 Crypto files
Lottery AmateursCTF 2023 24.54 Crypto files
Minimalaestic AmateursCTF 2023 24.54 Crypto files
Non-Quadratic_Residues AmateursCTF 2023 24.54 Crypto files
OwO_time_pad AmateursCTF 2023 24.54 Crypto files
Poly_Fractions AmateursCTF 2023 24.54 Crypto files
The_Vault_2 AmateursCTF 2023 24.54 Crypto files
Weak_Primes AmateursCTF 2023 24.54 Crypto files
You_get_extra_information_1 AmateursCTF 2023 24.54 Crypto files
lce_cream_generator AmateursCTF 2023 24.54 Crypto files