$ ctf42

Challenges

Category
Difficulty
CTFtime weight
–
Higher weight ≈ harder, more prestigious event.
Year
–
Must have
Reset

25 challenges · browse all techniques

Challenge CTF Weight Category Has
back-to-basics
#static-analysis
 HSCTF 2023 – Reverse files wu 1
brain-hurt
#xor
 HSCTF 2023 – Reverse files wu 1
mystery-methods
#encoding-chain
 HSCTF 2023 – Reverse files wu 2
eunectes-murinus
#python-bytecode
 HSCTF 2022 – Reverse files wu 1
multidimensional
#reverse-engineering
 HSCTF 2021 – Reverse files src wu 3
scrambler
#python-bytecode
 HSCTF 2021 – Reverse files wu 2
sneks
#python-bytecode
 HSCTF 2021 – Reverse files wu 3
warmup-rev
#function-inversion
 HSCTF 2021 – Reverse files src wu 3
atcs-nightmare HSCTF 2022 – Reverse files wu 1
1125899906842622 HSCTF 2023 – Reverse files
keygen HSCTF 2023 – Reverse files
micrurus-fulvius HSCTF 2023 – Reverse files
re-cursed HSCTF 2023 – Reverse files
revrevrev HSCTF 2023 – Reverse files
adding HSCTF 2022 – Reverse files
no-title HSCTF 2022 – Reverse files
hcsDS HSCTF 2021 – Reverse files
jctech HSCTF 2021 – Reverse files
simpl HSCTF 2021 – Reverse files
AP LAB Computer Science Principles HSCTF 2020 – Reverse files src
AP LAB English Language HSCTF 2020 – Reverse files src
DaHeck HSCTF 2019 – Reverse files src
Forgot Your Password? HSCTF 2019 – Reverse files src
License HSCTF 2019 – Reverse files src
VirtualJava HSCTF 2019 – Reverse files src