CTF challenges & writeups

105 challenges in family ⊕ crypto:encoding ✕ clear · browse all techniques

Challenge	CTF	Weight	Category	Has
fixpoint #base64-custom-alphabet	BuckeyeCTF 2024	50.91	Misc	files wu 1
b4by_jail #pyjail #unicode-normalization	Pearl 2024	23.95	Misc	files wu 2
the_receiver_of_many #encoding-decoding #book-cipher	SpringForwardCTF 2024	22.40	Crypto	files wu 1
Where_Snakes_Die #whitespace-steganography #morse-code	BxMCTF 2023	–	Crypto	files wu 1
Backup #pcap-analysis #ftp-credential-sniffing #protected-zip-extraction	CyberSecurityRumble 2023 Quals	24.80	Crypto	files wu 2
InternSkripting #web #http-header-manipulation #nginx-misconfiguration #unicode-int-bypass	CyberSecurityRumble 2023 Quals	24.80	Web	files wu 1
shellcode-ception #self-modifying-shellcode #xor-decode #mprotect	CyberSecurityRumble 2023 Quals	24.80	Reverse	files wu 1
Safe_Image_Storage #reversing #protocol-analysis	TeamItaly 2023	24.88	Reverse	files wu 1
LockedOut #encoding-chain	Engineer 2022	22.65	Crypto	files wu 1
ShakespeareAndEncoding #rot47	Engineer 2022	22.65	Crypto	files wu 1
TVAsTrap #nested-base64	Engineer 2022	22.65	Crypto	files wu 1
SecureAssetManager #mitm-protocol-tampering	BSidesSF 2021	23.94	Pwn	files wu 1
This_one_is_really_basic #base64 #encoding	DCTF 2021	–	Crypto	files wu 2
CRC_Recursive_Challenge #crc	Dragon 2021	99.33	Crypto	files wu 2
CRC_Recursive_Challenge_warmup #crc	Dragon 2021	99.33	Crypto	files wu 2
Rusty_Chains #unicode-overflow	HackPack 2021	24.31	Pwn	files wu 1
Poly-Proof #base-b-coefficient-recovery	K3RN3LCTF 2021	24.37	Crypto	files wu 1
Thief #nuitka-binary-reversing	MetaRed 2021	–	Reverse	files wu 1
heapnot #stack-buffer-overflow #rop #mprotect #reverse-shell-shellcode	PBjar 2021	23.18	Pwn	files wu 1
Dotty #morse-code #strings	RaRCTF 2021	24.53	Reverse	files wu 2
RaRPG #binary-patching	RaRCTF 2021	24.53	Reverse	files wu 3
LostInForest #base64-decoding	TrollCAT 2021	21.87	Crypto	files wu 1
More_than_shellcoding #shellcode #self-modifying-code #mprotect	VULNCON 2021	–	Pwn	files wu 2
eeeeeemoji #restricted-shellcode #unicode-constraint #one-gadget	0CTF 2020 Quals	–	Pwn	files wu 1
genius #binary-patching	BSidesSF 2019	25.00	Misc	files wu 2

Challenges