$ ctf42

Challenges

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Higher weight ≈ harder, more prestigious event.
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1358 challenges · browse all techniques

Challenge CTF Weight Category Has
Ransomware THJCC 2026 – Forensics files
Starry_Sky THJCC 2026 Summer – Forensics files
TV THJCC 2026 – Forensics files
check_the_fine_print TJCTF 2026 – Forensics files
invisible_ink TJCTF 2026 – Forensics files
obscure_crusher_1 TJCTF 2026 – Forensics files
obscure_crusher_2 TJCTF 2026 – Forensics files
skeleton TJCTF 2026 – Forensics files
thomas_schools_of_china TJCTF 2026 – Forensics files
triplets TJCTF 2026 – Forensics files
unfinished_file TJCTF 2026 – Forensics files
voice_in_the_packet TJCTF 2026 – Forensics files
A_Different_Side_Channel TexSAW 2026 41.59 Forensics files
Journaling TexSAW 2026 41.59 Forensics files
Jurrasic_Parse TexSAW 2026 41.59 Forensics files
Lost_my_keys TexSAW 2026 41.59 Forensics files
layers TexSAW 2026 41.59 Forensics files
Doomed_Demo UMassCTF 2026 65.95 Forensics files
Ninja_Nerds UMassCTF 2026 65.95 Forensics files
Cold_Workspace UTCTF 2026 – Forensics files
Half_Awake UTCTF 2026 – Forensics files
Last_Byte_Standing UTCTF 2026 – Forensics files
Sherlockk UTCTF 2026 – Forensics files
Silent_Archive UTCTF 2026 – Forensics files
Watson UTCTF 2026 – Forensics files
Carrier_Lock Universal 2026 25.00 Forensics files
Dead_Reckoning Universal 2026 25.00 Forensics files
Familiar_Language Universal 2026 25.00 Forensics files
Occultation_Window Universal 2026 25.00 Forensics files
Paper_Jam Universal 2026 25.00 Forensics files
Quiet_Twin Universal 2026 25.00 Forensics files
Baby_Exfil UofTCTF 2026 33.49 Forensics files
My_Pokemon_Card_is_Fake UofTCTF 2026 33.49 Forensics files
After_Cleanup V1T 2026 22.14 Forensics files
BasicQnA V1T 2026 22.14 Forensics files
Big_Mac V1T 2026 22.14 Forensics files
Dragon_Curve V1T 2026 22.14 Forensics files
Green_Goblin V1T 2026 22.14 Forensics files
Nice_Try V1T 2026 22.14 Forensics files
Polar_Fragments V1T 2026 22.14 Forensics files