CTF challenges & writeups

1454 challenges in family ⊕ crypto ✕ clear · browse all techniques

Challenge	CTF	Weight	Category	Has
BBB #rsa #hastad-broadcast #prng	SECCON 2022 Quals	97.90	Crypto	files wu 1
doroboh #rc4 #memory-dump #key-recovery	SECCON 2022 Quals	97.90	Reverse	files wu 1
eguite #rust-reversing #constraint-solving	SECCON 2022 Quals	97.90	Reverse	files wu 1
insufficient #secret-sharing #cvp #lattice	SECCON 2022 Quals	97.90	Crypto	files wu 1
janken_vs_kurenaif #mt19937 #seed-recovery	SECCON 2022 Quals	97.90	Crypto	files wu 1
pqpq #rsa #polynomial	SECCON 2022 Quals	97.90	Crypto	files wu 1
this_is_not_lsb #rsa #lsb-oracle #lll (lll-lattice-reduction)	SECCON 2022 Quals	97.90	Crypto	files wu 1
witches_symmetric_exam #padding-oracle #ofb #gcm	SECCON 2022 Quals	97.90	Crypto	files wu 1
babyreeee #oracle #bruteforce	SEETF 2022	–	Reverse	files wu 1
close_enough #rsa #fermat-factorization #close-primes	SEETF 2022	–	Crypto	files wu 3
lost_modulus #rsa #modulus-recovery	SEETF 2022	–	Crypto	files wu 2
Ez_Pager_Tiper #lfsr #known-plaintext	SUSCTF 2022	–	Crypto	files wu 1
InverseProblem #inverse-problem #linear-algebra	SUSCTF 2022	–	Crypto	files wu 1
large_case #amm #nth-root #crt	SUSCTF 2022	–	Crypto	files wu 1
escrime #rsa #common-factor #gcd	Securinets 2022 Quals	50.11	Crypto	files wu 1
Diffecient #hash-collision #bloom-filter #murmurhash3	SekaiCTF 2022	24.86	Crypto	files wu 1
FaILProof #linear-algebra	SekaiCTF 2022	24.86	Crypto	files wu 1
RobustCBC #cbc-mac #mac-forgery #truncation-collision	SekaiCTF 2022	24.86	Crypto	files wu 1
SecureImageEncryption #permutation-cipher #chosen-plaintext	SekaiCTF 2022	24.86	Crypto	files wu 1
TimeCapsule #stream-cipher #keystream-recovery #permutation-bruteforce	SekaiCTF 2022	24.86	Crypto	files wu 3
InformationParadox #rsa #corrupted-private-key #key-recovery	SpaceHeroes 2022	23.94	Crypto	files wu 1
Fancy_e #rsa #wiener-attack	Srdnlen 2022	24.17	Crypto	files wu 1
AESChall #aes #linear-sbox #affine-cipher	SunshineCTF 2022	24.10	Crypto	files wu 1
Lets-a-Go #upx #golang #xor	SunshineCTF 2022	24.10	Reverse	files wu 1
lucky #prng-seed-bruteforce	TAMUctf 2022	–	Pwn	files wu 1
RANDOM #prng #canary	TFC 2022	–	Pwn	files wu 1
factor-master #rsa #factorization	TJCTF 2022	–	Crypto	files wu 1
mac-master #hash-collision #md5	TJCTF 2022	–	Crypto	files wu 1
morph-master #paillier #homomorphic	TJCTF 2022	–	Crypto	files wu 1
rsa-apprentice #rsa	TJCTF 2022	–	Crypto	files wu 2
DIY_Crypto #aes #custom-sbox	Tenable 2022	22.37	Crypto	files wu 1
Wifi_Password_of_The_Day #crime #compression-oracle	Tenable 2022	22.37	Crypto	files wu 1
algebra #elliptic-curve-recovery	TetCTF 2022	36.72	Crypto	files wu 1
newbie #ret2libc #canary-bypass #prng	TetCTF 2022	36.72	Pwn	files wu 2
shares #linear-algebra #secret-sharing	TetCTF 2022	36.72	Crypto	files wu 1
shares_v2 #meet-in-the-middle (mitm)#linear-algebra	TetCTF 2022	36.72	Crypto	files wu 1
Non-textualTroubles #shift-cipher	UACTF 2022	–	Crypto	files wu 2
Bro-key-n #rsa #partial-key-recovery	UIUCTF 2022	–	Crypto	files wu 1
asr #rsa	UIUCTF 2022	–	Crypto	files src wu 1
mom_can_we_have_AES #aes #block-cipher	UIUCTF 2022	–	Crypto	files wu 1

Challenges