CTF challenges & writeups

7364 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
simple_cipher #byte-at-a-time-bruteforce	TAMUctf 2021	–	Reverse	files wu 1
ClassicCrypto #classical-cipher #substitution	Tenable 2021	22.37	Crypto	files wu 2
ECDSAImplementationReview #ecdsa #weak-nonce	Tenable 2021	22.37	Crypto	files wu 1
EasyPeasy #base64 #encoding	Tenable 2021	22.37	Crypto	files wu 1
PharOut #phar-deserialization	Tenable 2021	22.37	Web	files wu 2
WelcomeToTheFriendzone #stack-buffer-overflow	Tenable 2021	22.37	Pwn	files wu 1
Gonnegtions #shellcode	UIUCTF 2021	–	Pwn	files wu 1
Tedious #decompilation	UIUCTF 2021	–	Reverse	files wu 3
back_to_basics #base-conversion	UIUCTF 2021	–	Crypto	files wu 3
dhke_adventure #diffie-hellman #pohlig-hellman	UIUCTF 2021	–	Crypto	files wu 2
dhke_intro #diffie-hellman #discrete-log	UIUCTF 2021	–	Crypto	files wu 2
hvhpgssynt #rot13	UIUCTF 2021	–	Reverse	files wu 3
ponydb #sql-injection #sql-truncation	UIUCTF 2021	–	Web	files wu 1
pwnyIDE #ssrf #ftp	UIUCTF 2021	–	Web	files wu 1
ropfuscated #rop-obfuscation #reversing	UIUCTF 2021	–	Reverse	files wu 1
signals #self-modifying-code #mprotect	UIUCTF 2021	–	Reverse	files wu 3
wasmcloud #wasm-exploitation	UIUCTF 2021	–	Web	files wu 1
yana #subdomain-takeover #xs-leak	UIUCTF 2021	–	Web	files wu 2
Art_Class #maritime-signal-flags #visual-decoding	UMDCTF 2021	–	Crypto	files wu 2
Cards_Galore #mirdek-cipher #caesar-cipher	UMDCTF 2021	–	Crypto	files wu 2
Celebration #dancing-men-cipher #substitution-cipher	UMDCTF 2021	–	Crypto	files wu 2
FeistyCrypt #feistel-cipher	UMDCTF 2021	–	Reverse	files wu 1
Jump_Is_Easy #ret2dlresolve #bof #x86-64	UMDCTF 2021	–	Pwn	files wu 1
Jump_Is_Found #format-string #got-overwrite #heap	UMDCTF 2021	–	Pwn	files wu 1
Jump_Not_Easy #bof #ret2win	UMDCTF 2021	–	Pwn	files wu 2
Jump_Not_Working #ret2dlresolve #bof	UMDCTF 2021	–	Pwn	files wu 1
Justin_1 #osint #social-media-osint	UMDCTF 2021	–	OSINT	files wu 1
Justin_2 #osint #geolocation #reverse-image-search	UMDCTF 2021	–	OSINT	files wu 3
Nikolai_2 #osint #social-media-osint #geolocation	UMDCTF 2021	–	OSINT	files wu 3
Office_Secrets #rsa #common-modulus-attack	UMDCTF 2021	–	Crypto	files wu 1
Painting_Windows #anti-debugging #xor #windows-reversing	UMDCTF 2021	–	Reverse	files wu 1
Starbucks #java-reversing #decompilation	UMDCTF 2021	–	Reverse	files wu 2
Subway #substitution-cipher	UMDCTF 2021	–	Crypto	files wu 1
To_Be_Xor_Not_To_Be #xor	UMDCTF 2021	–	Crypto	files wu 1
Traveling #osint #geolocation	UMDCTF 2021	–	OSINT	files wu 3
Vacation #osint #geolocation #reverse-image-search	UMDCTF 2021	–	OSINT	files wu 3
Whose_Base_Is_It_Anyway #base-conversion	UMDCTF 2021	–	Crypto	files wu 2
furor-RPI #arm #bof #shellcode	UMDCTF 2021	–	Pwn	files wu 1
Weird_RSA #rsa #fermat-factorization	UMassCTF 2021	23.56	Crypto	files wu 1
malware #aes-ctr #known-plaintext #keystream-reuse	UMassCTF 2021	23.56	Crypto	files wu 3

Challenges