$ ctf42

Challenges

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

Challenge CTF Weight Category Has
Poor_Megan
#cyberchef-magic#encoding
 DEADFACE 2025 – Crypto files wu 3
0ff_Again_On_Aga1n
#binary-encoding#color-to-binary#image-decode
 DEADFACE 2023 – Crypto files wu 1
B1Tz_and_B0tZ
#multi-layer-encoding#binary#hex#rot13
 DEADFACE 2023 – Crypto files wu 1
Coin_Code
#caesar-cipher
 DEADFACE 2023 – Crypto files wu 1
HAM_JAM
#morse-code#codablock-barcode#vigenere
 DEADFACE 2023 – Crypto files wu 1
Letter_Soup
#word-search#rot13
 DEADFACE 2023 – Crypto files wu 1
Off_the_Rails
#rail-fence-cipher
 DEADFACE 2023 – Crypto files wu 1
File_Dump_01 DEADFACE 2026 – Crypto files
Hail_Caesar DEADFACE 2026 – Crypto files
Second_Shift DEADFACE 2026 – Crypto files
3_Card_Call_Stream_1 DEADFACE 2025 – Crypto files
Binary_Mixup DEADFACE 2025 – Crypto files
CreepNet DEADFACE 2025 – Crypto files
Fenceline DEADFACE 2025 – Crypto files
Ghastly_Gears DEADFACE 2025 – Crypto files
Secret_Symbols DEADFACE 2025 – Crypto files
Winky_Face DEADFACE 2025 – Crypto files
4^2x4^2 DEADFACE 2024 – Crypto files
Awww_Sheet DEADFACE 2024 – Crypto files
Cogs_in_the_Machine DEADFACE 2024 – Crypto files
Da_Cube DEADFACE 2024 – Crypto files
Discreet_Logging DEADFACE 2024 – Crypto files
Drink_Up DEADFACE 2024 – Crypto files
Ides_le_Talk DEADFACE 2024 – Crypto files
Killer_Curve DEADFACE 2024 – Crypto files
Logical_Left_and_Rational_Right DEADFACE 2024 – Crypto files
Sleeping_Marble_Beauty DEADFACE 2024 – Crypto files
Social_Pressure DEADFACE 2024 – Crypto files
Halloween_+1 DEADFACE 2023 – Crypto files
Reflections DEADFACE 2023 – Crypto files
Slothy DEADFACE 2023 – Crypto files
Up_in_the_Air DEADFACE 2023 – Crypto files