$ ctf42

Challenges

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

Challenge CTF Weight Category Has
Buried_Treasure
#multi-stage-unpacking#memfd-create#xor#strace-dump
 RITSEC 2026 – Reverse files wu 1
T_reasure_Chest
#xtea
 RITSEC 2026 – Reverse files wu 1
not_quite_optimal
#gmp#tetration#power-tower
 RITSEC 2026 – Reverse files wu 1
obfpyscated
#python-obfuscation#xor#aes
 RITSEC 2026 – Reverse files wu 1
CatsAtPlay
#strings
 RITSEC 2023 – Reverse files wu 2
GuessThePassword
#python-reversing#custom-encoding
 RITSEC 2023 – Reverse files wu 2
Fleshwound
#scratch#visual-programming
 RITSEC 2021 – Reverse files wu 2
Memedrive
#android#jadx#xor#base64
 RITSEC 2021 – Reverse files wu 1
SamuraiInfection
#dna-encoding#nucleotide
 RITSEC 2021 – Reverse files wu 1
snek
#pyc-decompile#uncompyle6
 RITSEC 2021 – Reverse files wu 3
Black_Ledger RITSEC 2026 – Reverse files
Deadwater RITSEC 2026 – Reverse files
Marauder_Matchup RITSEC 2026 – Reverse files
Proxied RITSEC 2026 – Reverse files
Lunar_Lunacy RITSEC 2025 – Reverse files
Minesweeper RITSEC 2025 – Reverse files
Noisy RITSEC 2025 – Reverse files
Unconventional RITSEC 2025 – Reverse files
Zogulon_Traces RITSEC 2025 – Reverse files
EtTuBrute RITSEC 2024 – Reverse files
Fun RITSEC 2024 – Reverse files
Go_Go_Gadget RITSEC 2024 – Reverse files
Guess RITSEC 2024 – Reverse files
Warm_Up_My_Favorite_Flag RITSEC 2024 – Reverse files
Gauntlet RITSEC 2023 – Reverse files
JurassicPark RITSEC 2023 – Reverse files
DataFun RITSEC 2022 – Reverse files
SSHBackdoor RITSEC 2022 – Reverse files
TagAlong RITSEC 2022 – Reverse files
soup RITSEC 2022 – Reverse files
Baby_WASM RITSEC 2021 – Reverse files
Teen_WASM RITSEC 2021 – Reverse files
Un-machined_Aerial_System RITSEC 2021 – Reverse files