CTF challenges & writeups

4483 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
Zodiac_Killer #zodiac-cipher #homophonic-substitution	BroncoCTF 2024	22.51	Crypto	files wu 2
4ES #meet-in-the-middle (mitm)	CrewCTF 2024	26.89	Crypto	files wu 1
Modulus_RSA #rsa #multiprime #residue-recovery #bruteforce	CyberSpace 2024	24.83	Crypto	files wu 1
ezcoppersmith #rsa #ecm-factorization	CyberSpace 2024	24.83	Crypto	files wu 1
flagprinter #reversing #base3-digit-sum #xor-keystream	CyberSpace 2024	24.83	Crypto	files wu 2
trendy_windy_trigonity #lll (lll-lattice-reduction)#lattice-reduction #trigonometric-reconstruction	CyberSpace 2024	24.83	Crypto	files wu 1
News_Of_The_World	DawgCTF 2024	46.57	Crypto	files wu 1
Rated_R	H7CTF 2024	22.56	Crypto	files wu 1
Symmetry_2 #out-of-bounds-write	KalmarCTF 2024	24.21	Crypto	files wu 1
breakfaest #fiat-shamir-forgery	KalmarCTF 2024	24.21	Crypto	files wu 1
3_spies #hastad-broadcast #rsa #crt	Pearl 2024	23.95	Crypto	files wu 1
Rick_Roll #vigenere #rot13	Pearl 2024	23.95	Crypto	files wu 1
the_receiver_of_many #encoding-decoding #book-cipher	SpringForwardCTF 2024	22.40	Crypto	files wu 1
CONPASS	TSG 2024	–	Crypto	files wu 3
Easy_ECDLP	TSG 2024	–	Crypto	files wu 3
Feistel_Barrier	TSG 2024	–	Crypto	files wu 3
Mystery_of_Scattered_Key	TSG 2024	–	Crypto	files wu 3
Who_is_the_Outlier	TSG 2024	–	Crypto	files wu 3
B4_the_B8	UMassCTF 2024	43.10	Crypto	files wu 1
Reader_Exercise	UMassCTF 2024	43.10	Crypto	files wu 1
Shuffling_as_a_Service	UMassCTF 2024	43.10	Crypto	files wu 1
TagSeries2	WolvCTF 2024	35.25	Crypto	files wu 2
You_get_extra_information_2	AmateursCTF 2023	24.54	Crypto	files wu 1
Git_Better	BCACTF 2023	–	Crypto	files wu 1
Appetizers	BlueHens 2023	24.61	Crypto	files wu 1
unbreakable	BlueHens 2023	24.61	Crypto	files wu 1
Real_Smooth #stream-cipher #known-plaintext	BuckeyeCTF 2023	34.50	Crypto	files wu 2
I_Cant_Beelieve_It #acrostic-cipher	BxMCTF 2023	–	Crypto	files wu 1
Where_Snakes_Die #whitespace-steganography #morse-code	BxMCTF 2023	–	Crypto	files wu 1
Baby_RSA #whitebox-rsa #key-extraction	CCCamp 2023	25.00	Crypto	files wu 1
FusEd #rsa-signature-forgery #bit-manipulation	CCCamp 2023	25.00	Crypto	files wu 1
Backup #pcap-analysis #ftp-credential-sniffing #protected-zip-extraction	CyberSecurityRumble 2023 Quals	24.80	Crypto	files wu 2
Adventurers_Knapsack #merkle-hellman #knapsack #low-density-attack #lll (lll-lattice-reduction)	DanteCTF 2023	24.44	Crypto	files wu 1
DIY_enc #aes-ctr #base64-padding-position #key-recovery	DanteCTF 2023	24.44	Crypto	files wu 1
Small_Inscription #rsa #low-exponent #coppersmith #stereotyped-message	DanteCTF 2023	24.44	Crypto	files wu 1
ProvablySecure	DiceCTF 2023	36.70	Crypto	files wu 2
ProvablySecure2	DiceCTF 2023	36.70	Crypto	files wu 2
vinaigrette	DiceCTF 2023	36.70	Crypto	files wu 1
flag_art	DownUnderCTF 2023	46.63	Crypto	files wu 1
md5	TAMUctf 2023	–	Crypto	files wu 1

Challenges