CTF challenges & writeups

221 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
highly-optimized #vm-reversing #bytecode-interpreter	UofTCTF 2025	23.90	Reverse	files wu 1
All_Worbled_Up #python-bytecode-reversing #adler32	UofTCTF 2024	23.90	Reverse	files wu 3
CEOs_Lost_Password #z3 #constraint-solving #java-reversing	UofTCTF 2024	23.90	Reverse	files wu 1
CSS_Password #css #logic-reconstruction	UofTCTF 2024	23.90	Reverse	files wu 3
Clever_Thinking #ecc #ecdlp #discrete-log	UofTCTF 2024	23.90	Crypto	files wu 1
Export_Grade_Cipher #chosen-plaintext #custom-cipher	UofTCTF 2024	23.90	Crypto	files wu 1
Pianoman #rsa #steganography	UofTCTF 2024	23.90	Crypto	files wu 2
Random_Maze #z3 #constraint-solving	UofTCTF 2024	23.90	Reverse	files wu 2
Wheel_Barrow #burrows-wheeler-transform	UofTCTF 2024	23.90	Crypto	files wu 2
basic_overflow #bof #ret2win	UofTCTF 2024	23.90	Pwn	files wu 2
patched_shell #bof #ret2win	UofTCTF 2024	23.90	Pwn	files wu 1
repeat #repeating-key-xor	UofTCTF 2024	23.90	Crypto	files wu 3
BLADE_RUNNER #prototype-pollution	MapleCTF 2023	24.05	Web	files wu 1
Data_Explorer #order-by-sql-injection	MapleCTF 2023	24.05	Web	files wu 1
JUJUTSU_KAISEN_2 #esi-injection	MapleCTF 2023	24.05	Web	files wu 1
confounded-pondering-unit #logisim-cpu-reversing	MapleCTF 2022	24.05	Reverse	files wu 1
vm-v2 #systemverilog-vm-reversing	MapleCTF 2022	24.05	Reverse	files wu 1
warmup1 #stack-buffer-overflow	MapleCTF 2022	24.05	Pwn	files wu 1
warmup2 #ret2libc-one-gadget	MapleCTF 2022	24.05	Pwn	files wu 1
EnableMe	UofTCTF 2024	23.90	Forensics	files wu 3
Flying_High	UofTCTF 2024	23.90	OSINT	files wu 3
Guestbook	UofTCTF 2024	23.90	Web	files wu 2
Illusion	UofTCTF 2024	23.90	Forensics	files wu 2
Love_Debug	UofTCTF 2024	23.90	Reverse	files wu 1
No_Code	UofTCTF 2024	23.90	Web	files wu 3
Secret_Message_1	UofTCTF 2024	23.90	Forensics	files wu 3
Secret_Message_2	UofTCTF 2024	23.90	Forensics	files wu 2
The_Varsity	UofTCTF 2024	23.90	Web	files wu 2
Alls_Fair_in_Love_and_CTFs	DalCTF 2026	24.90	Crypto	files
Angry_Shamir	DalCTF 2026	24.90	Crypto	files
Baby_Android	DalCTF 2026	24.90	Reverse	files
Bandaids_Help_me_Heal	DalCTF 2026	24.90	Pwn	files
Bit_Miner	DalCTF 2026	24.90	Reverse	files
Compression_isnt_encryption	DalCTF 2026	24.90	Crypto	files
Do_you_know_the_way	DalCTF 2026	24.90	Reverse	files
Fun_With_RSA	DalCTF 2026	24.90	Crypto	files
Haskell2	DalCTF 2026	24.90	Reverse	files
Hey_you.	DalCTF 2026	24.90	OSINT	files
Jack_Black	DalCTF 2026	24.90	Pwn	files
LCG_Seed_Squared	DalCTF 2026	24.90	Crypto	files

Challenges