CTF challenges & writeups

360 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
Request_Handling #ast-injection	DownUnderCTF 2025	91.66	Web	files wu 1
cheap_logs #use-after-free (uaf)	DownUnderCTF 2025	91.66	Crypto	files wu 1
Babys_First_Forensics #pcap-analysis	DownUnderCTF 2024	68.04	Forensics	files src wu 1
Prisoner_Processor #prototype-pollution	DownUnderCTF 2024	68.04	Web	files wu 1
co2v2 #class-pollution	DownUnderCTF 2024	68.04	Web	files wu 1
my_array_generator #keystream-recovery	DownUnderCTF 2024	68.04	Crypto	files src wu 1
offtheramp #exif-metadata	DownUnderCTF 2024	68.04	OSINT	files wu 1
rusty_vault #aes	DownUnderCTF 2024	68.04	Reverse	files wu 1
shufflebox #permutation	DownUnderCTF 2024	68.04	Crypto	files src wu 1
My_First_C_Program #deobfuscation	DownUnderCTF 2023	46.63	Misc	files wu 1
proxed #x-forwarded-for	DownUnderCTF 2023	46.63	Web	files wu 1
CryptoCasino #weak-prng	DownUnderCTF 2022	–	Blockchain	files wu 2
PrivateLog #arbitrary-storage-write	DownUnderCTF 2022	–	Blockchain	files wu 1
SecretAndEphemeral #storage-reading	DownUnderCTF 2022	–	Blockchain	files wu 1
baby-arx #byte-at-a-time	DownUnderCTF 2022	–	Crypto	files src wu 3
babypywn #buffer-overflow	DownUnderCTF 2022	–	Pwn	files src wu 3
Juggler #type-juggling #php	UACTF 2022	–	Web	files wu 1
Non-textualTroubles #shift-cipher	UACTF 2022	–	Crypto	files wu 2
SanityCheck #strings-extraction	UACTF 2022	–	Reverse	files wu 2
re-platformer #reversing	UACTF 2022	–	Reverse	files wu 1
Break_Me #ecb-oracle	DownUnderCTF 2021	–	Crypto	files wu 3
DUCTFnote #off-by-one	DownUnderCTF 2021	–	Pwn	files wu 2
Leaking_like_a_sieve #format-string	DownUnderCTF 2021	–	Pwn	files wu 3
Notepad #dompurify-bypass	DownUnderCTF 2021	–	Web	files wu 2
Oversight #stack-pivot	DownUnderCTF 2021	–	Pwn	files wu 1
Substitution_Cipher_I #substitution-cipher	DownUnderCTF 2021	–	Crypto	files src wu 3
Substitution_Cipher_II #lagrange-interpolation	DownUnderCTF 2021	–	Crypto	files wu 1
babygame #variable-overwrite	DownUnderCTF 2021	–	Pwn	files wu 2
deadcode #variable-overwrite	DownUnderCTF 2021	–	Pwn	files wu 3
flag_checker #z3	DownUnderCTF 2021	–	Reverse	files wu 1
no_strings #static-analysis	DownUnderCTF 2021	–	Reverse	files wu 2
outBackdoor #ret2win	DownUnderCTF 2021	–	Pwn	files wu 3
ready_bounce_pwn #stack-pivot	DownUnderCTF 2021	–	Pwn	files wu 3
treasure #shamir-secret-sharing	DownUnderCTF 2021	–	Crypto	files wu 1
write_what_where #write-what-where	DownUnderCTF 2021	–	Pwn	files wu 3
yadlp #discrete-log	DownUnderCTF 2021	–	Crypto	files wu 1
my-first-echo-server #format-string	DownUnderCTF 2020	24.44	Misc	files wu 3
return-to-what #ret2libc	DownUnderCTF 2020	24.44	Misc	files wu 3
return-to-whats-revenge #orw	DownUnderCTF 2020	24.44	Misc	files wu 3
shellthis #ret2win	DownUnderCTF 2020	24.44	Misc	files src wu 3

Challenges