CTF challenges & writeups

3995 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
Save_the_Kappa	FullWeakEngineer 2025	24.60	Misc	files wu 2
Pls_respond #sms-ems-decoding	LakeCTF 2025 Quals	–	Misc	files wu 1
Wordler #automated-wordle-solver	LakeCTF 2025 Quals	–	Misc	files wu 1
SSH_Key_Tester	NahamCon 2025	53.77	Misc	files wu 1
Mafia_at_the_end_1 #pcap #irc #smart-contract #etherscan	PwnMe 2025 Quals	24.95	Misc	files wu 1
Mafia_at_the_end_2 #smart-contract #predictable-rng #storage-read	PwnMe 2025 Quals	24.95	Misc	files wu 1
Library #minecraft #save-file-analysis	SAS 2025 Quals	20.72	Misc	files wu 1
WX_Underground #arbitrary-file-write #command-length-limit	SAS 2025 Quals	20.72	Misc	files wu 1
Easy_Jail	Securinets 2025 Quals	70.50	Misc	files wu 1
Eye_doctor #image-deblurring #deconvolution	BraekerCTF 2024	24.72	Misc	files wu 1
e #integer-overflow #floating-point	BraekerCTF 2024	24.72	Misc	files wu 1
Keyboard_Elitist #keyboard-layout-cipher	BroncoCTF 2024	22.51	Misc	files wu 1
Shrekanana_Banana #bitplane-steganography	BroncoCTF 2024	22.51	Misc	files wu 1
Stego_Snore_Us #bitplane-steganography #substitution-cipher	BroncoCTF 2024	22.51	Misc	files wu 1
fixpoint #base64-custom-alphabet	BuckeyeCTF 2024	50.91	Misc	files wu 1
Sniff_one #i2c-decoding #logic-analyzer	CrewCTF 2024	26.89	Misc	files wu 1
floordrop	DiceCTF 2024 Quals	54.40	Misc	files wu 2
tldr_please_summarise	DownUnderCTF 2024	68.04	Misc	files wu 2
bank	ImaginaryCTF 2024	49.81	Misc	files wu 1
bank_revenge	ImaginaryCTF 2024	49.81	Misc	files wu 1
Missing	L3akCTF 2024	24.43	Misc	files wu 1
mixed_signals	LA 2024	–	Misc	files wu 1
remis_world	LA 2024	–	Misc	files wu 2
zerocoin	LA 2024	–	Misc	files wu 1
Hashes_on_Hashes_on_Hashes	NahamCon 2024	41.61	Misc	files wu 1
b4by_jail #pyjail #unicode-normalization	Pearl 2024	23.95	Misc	files wu 2
Horsing_Around_at_Troy #binwalk #file-carving	SpringForwardCTF 2024	22.40	Misc	files wu 1
Strange_Historical_Machine #exif-metadata #enigma-cipher	SpringForwardCTF 2024	22.40	Misc	files wu 1
PasswordGuesser	THCon 2024	–	Misc	files wu 1
Cached_File_Viewer	TSG 2024	–	Misc	files wu 3
Cached_File_Viewer_2	TSG 2024	–	Misc	files wu 3
Scattered_in_the_fog	TSG 2024	–	Misc	files wu 3
prime_shellcode	TSG 2024	–	Misc	files wu 3
simple_calc	TSG 2024	–	Misc	files wu 3
Slot_Machine	UIUCTF 2024	–	Misc	files wu 1
Addition	n00bzCTF 2024	24.23	Misc	files wu 1
PyJail	1337UP 2023	24.23	Misc	files wu 1
algo	AmateursCTF 2023	24.54	Misc	files wu 1
findme #osint #image-geolocation	CrewCTF 2023	20.33	Misc	files wu 1
Admin_CLI #hash-collision	FE-CTF 2023	–	Misc	files wu 1

Challenges