CTF challenges & writeups

199 challenges in family ⊕ crypto:other ✕ clear · browse all techniques

Challenge	CTF	Weight	Category	Has
trendy_windy_trigonity #lll (lll-lattice-reduction)#lattice-reduction #trigonometric-reconstruction	CyberSpace 2024	24.83	Crypto	files wu 1
I_Cant_Beelieve_It #acrostic-cipher	BxMCTF 2023	–	Crypto	files wu 1
Baby_RSA #whitebox-rsa #key-extraction	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
Small_Inscription #rsa #low-exponent #coppersmith #stereotyped-message	DanteCTF 2023	24.44	Crypto	files wu 1
Pwn_Chall #isogeny #sqisign	TeamItaly 2023	24.88	Crypto	files wu 1
easy_rsa #rsa #bitwise-leak #bit-by-bit-dfs-factoring	pingCTF 2023	–	Crypto	files wu 2
Giffy #gif-frame-extraction #steganography	Damncon 2022	17.54	Crypto	files wu 1
baby-rsa #rsa #known-prime #factorization	WRECKCTF 2022	–	Crypto	files wu 1
rsa #rsa #signing-oracle #blinding	WRECKCTF 2022	–	Crypto	files wu 1
zer0lfsr #lfsr #stream-cipher-cryptanalysis #correlation-attack	0CTF 2021 Quals	–	Crypto	files wu 1
secure-enclave #on-chain-secret-exposure #transaction-input-data-disclosure	0x41414141 2021	–	Crypto	files wu 1
staple-AES #aes-ecb #block-shuffling	0x41414141 2021	–	Crypto	files wu 2
SMS #custom-hash-collision #substitute-mix-shift	3kCTF 2021	24.14	Crypto	files wu 1
Defective_RSA #rsa #eth-root #crt	BuckeyeCTF 2021	24.81	Crypto	files wu 1
Elliptigo #ecc #small-subgroup-attack	BuckeyeCTF 2021	24.81	Crypto	files wu 1
Pseudo #legendre-prng #fermat-pseudoprime	BuckeyeCTF 2021	24.81	Crypto	files wu 1
payback #http-parameter-pollution #duplicate-parameter #logic-flaw	CyberSecurityRumble 2021	41.60	Crypto	files wu 2
result #pdf-encryption #pdf2john #zipcode-bruteforce	CyberSecurityRumble 2021	41.60	Crypto	files wu 3
Forgotten_secret #docker-image-forensics #layer-extraction #leaked-ssh-key	DCTF 2021	–	Crypto	files wu 1
Julius_ancient_script #caesar-cipher #shift-cipher	DCTF 2021	–	Crypto	files wu 3
Just_Take_Your_Time #3des #time-based-key #pwntools-automation	DCTF 2021	–	Crypto	files wu 3
Lockpicking #lfsr #cows-and-bulls #state-recovery	DCTF 2021	–	Crypto	files wu 1
Private_Encryption_Mistake #rsa #partial-private-key-recovery #ocr	DCTF 2021	–	Crypto	files wu 1
Badseed #predictable-rand	K3RN3LCTF 2021	24.37	Crypto	files wu 2
Beecryption #gf2-linearization	K3RN3LCTF 2021	24.37	Crypto	files wu 1
Objection #dsa-malicious-generator	K3RN3LCTF 2021	24.37	Crypto	files wu 1
Vietas_Poly #vietas-formulas	K3RN3LCTF 2021	24.37	Crypto	files wu 2
I_got_my_drivers_license_last_week #keyboard-shift-cipher	MetaRed 2021	–	Crypto	files wu 1
almost_perfect #vigenere #word-frequency-analysis #key-reuse	OMH 2021	–	Crypto	files wu 1
knapsack #superincreasing-knapsack #greedy #merkle-hellman	PBjar 2021	23.18	Crypto	files wu 1
A3S #affine-sbox #linear-cryptanalysis #gf3	RaRCTF 2021	24.53	Crypto	files wu 1
mini-A3S #affine-sbox #linear-cryptanalysis #gf3 #key-recovery	RaRCTF 2021	24.53	Crypto	files wu 1
minigen #linear-recurrence #xor #prng	RaRCTF 2021	24.53	Crypto	files wu 3
RadioStationApocalypse #rsa #rsactftool	TrollCAT 2021	21.87	Crypto	files wu 2
CrackSSH #rsa #weak-ssh-key	TsukuCTF 2021	–	Crypto	files wu 1
why_is_a_raven #isogeny #sidh #torsion-point-attack	Union 2021	24.34	Crypto	files wu 2
Invisible_Cipher #substitution-cipher #frequency-analysis	WORMCON 2021	–	Crypto	files wu 1

Challenges