$ ctf42

Challenges

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

Challenge CTF Weight Category Has
GISSNINGSLEK
#bash-injection
 Hack.lu 2025 98.02 Misc files wu 1
secret-pwnhub-academy-rewards-club-2
#shellcode
 Hack.lu 2020 87.94 Misc files wu 2
chat
#alloca
 Hack.lu 2019 68.75 Misc files wu 1
schnurtelefon
#double-free
 Hack.lu 2019 68.75 Misc files wu 1
tcalc
#overlapping-chunks
 Hack.lu 2019 68.75 Misc files wu 3
babyphp
#php-code-injection
 Hack.lu 2018 72.75 Misc files wu 1
heap_heaven_2
#fastbin
 Hack.lu 2018 72.75 Misc files wu 3
heap_hell
#integer-underflow
 Hack.lu 2018 72.75 Misc files wu 2
slot_machine
#tcache-poisoning
 Hack.lu 2018 72.75 Misc files wu 1
soulsplitter Hack.lu 2023 94.73 Misc files wu 1
pwnhub_collection Hack.lu 2020 87.94 Misc files wu 1
through-the-backdoor Hack.lu 2020 87.94 Misc files wu 1
no_risc_no_future Hack.lu 2019 68.75 Misc files wu 2
AKTIVKATALOG_INTRO Hack.lu 2025 98.02 Misc files
CODEBULLAR Hack.lu 2025 98.02 Misc files
CUSTOMER_SUPPORT Hack.lu 2025 98.02 Misc files
FANGELSE Hack.lu 2025 98.02 Misc files
KONTINUERLIG Hack.lu 2025 98.02 Misc files
SKAL Hack.lu 2025 98.02 Misc files
ZIGBAKVAM Hack.lu 2025 98.02 Misc files
FDA Hack.lu 2024 100.00 Misc files
FLX_Lock Hack.lu 2024 100.00 Misc files
Functional_Training Hack.lu 2024 100.00 Misc files
Locker_Zone Hack.lu 2024 100.00 Misc files
Safest_Eval Hack.lu 2023 94.73 Misc files
right-spot Hack.lu 2020 87.94 Misc files
secret-pwnhub-academy-rewards-club-1 Hack.lu 2020 87.94 Misc files
contiki-ng Hack.lu 2019 68.75 Misc files
teen_kernel Hack.lu 2019 68.75 Misc files
Scotty's last signal Hack.lu 2011 – Misc files
Unknown Planet Hack.lu 2011 – Misc files