CTF challenges & writeups

4483 challenges · browse all techniques

Challenge	CTF	Weight	Category	Has
RandSubWare #differential-cryptanalysis #spn	SekaiCTF 2023	24.86	Crypto	files wu 1
cryptoGRAPHy_1 #graph-encryption #token-decryption	SekaiCTF 2023	24.86	Crypto	files wu 1
cryptoGRAPHy_2 #graph-encryption #leakage-abuse #shortest-path-tree	SekaiCTF 2023	24.86	Crypto	files wu 1
cryptoGRAPHy_3 #graph-encryption #query-recovery #leakage-abuse	SekaiCTF 2023	24.86	Crypto	files wu 1
RSA #rsa #symmetric-polynomial #vieta	Srdnlen 2023	24.17	Crypto	files wu 1
BeepBoop_Cryptography #binary-encoding #decoding	SunshineCTF 2023	34.09	Crypto	files wu 1
iheartrsa #rsa #hastad-broadcast	TJCTF 2023	–	Crypto	files wu 1
squishy #rsa #signature-oracle	TJCTF 2023	–	Crypto	files wu 1
Complicated_Function #rsa #partial-key-exposure #coppersmith	TSG 2023	–	Crypto	files wu 3
Learning_with_Exploitation #lwe #lattice #knapsack	TSG 2023	–	Crypto	files wu 3
RANDOM_SEED_RANDOM #prng #cycle-length-attack	TSG 2023	–	Crypto	files wu 2
Streamer #stream-cipher #bruteforce	TSG 2023	–	Crypto	files wu 3
Unique_Flag #rsa #character-oracle #tree-search	TSG 2023	–	Crypto	files wu 3
casino #business-logic-flaw #negative-value	TetCTF 2023	53.89	Crypto	files wu 1
casino2 #prng-prediction #golang	TetCTF 2023	53.89	Crypto	files wu 1
Morphing_Time #elgamal #malleability	UIUCTF 2023	–	Crypto	files src wu 2
Three-Time_Pad #many-time-pad #key-reuse	UIUCTF 2023	–	Crypto	files src wu 2
CrossingTheRedSea #brainfuck #esolang #substitution-cipher	VishwaCTF 2023	22.69	Crypto	files wu 2
EmailIncoming #file-signature #archive-cracking #steganography	VishwaCTF 2023	22.69	Crypto	files wu 1
TheSecretImage #visual-cryptography #image-subtraction	VishwaCTF 2023	22.69	Crypto	files wu 1
Z2kDH #diffie-hellman #discrete-log #2-adic	WolvCTF 2023	24.33	Crypto	files wu 1
keyexchange #diffie-hellman #chosen-exponent	WolvCTF 2023	24.33	Crypto	files wu 2
cbc #classical-cipher #cbc-mode	corCTF 2023	36.97	Crypto	files wu 1
superbox #feistel-cipher #algebraic-cryptanalysis	corCTF 2023	36.97	Crypto	files wu 1
Aes-1 #hardcoded-password	n00bzCTF 2023	15.12	Crypto	files wu 1
MaaS #modulus-recovery-oracle	n00bzCTF 2023	15.12	Crypto	files wu 2
BinomialWays #reversible-stream-cipher #modular-addition	1337UP 2022	22.49	Crypto	files wu 2
Equality #rsa-common-modulus-attack	1337UP 2022	22.49	Crypto	files wu 1
Hidden_Frequencies #run-length-encoding	BCACTF 2022	–	Crypto	files wu 2
TheMostWorthyDistinctionOfPain #dictionary-encoding	BYUCTF 2022	–	Crypto	files wu 2
TruthAndFalsehood #nested-base64	BYUCTF 2022	–	Crypto	files src wu 1
XQR #xor #qr-code	BYUCTF 2022	–	Crypto	files src wu 2
CwyptographicOwacle #ecdsa #signature-oracle #private-key-recovery #aes	DaVinciCTF 2022	24.50	Crypto	files wu 1
small_weiner #rsa #boneh-durfee #lattice #small-private-exponent	DaVinciCTF 2022	24.50	Crypto	files wu 2
baby-rsa #rsa #higher-power-residue #nth-root #crt	DiceCTF 2022	24.82	Crypto	files wu 1
commitment-issues #lll (lll-lattice-reduction)#lattice #commitment-scheme	DiceCTF 2022	24.82	Crypto	files wu 1
correlated #lfsr #correlation-attack #filtered-lfsr	DiceCTF 2022	24.82	Crypto	files wu 1
learning-without-errors #rlwe #ckks #lattice #key-recovery	DiceCTF 2022	24.82	Crypto	files wu 1
pow-pow #vdf #rsa-group #repeated-squaring	DiceCTF 2022	24.82	Crypto	files wu 2
psych #timing-attack #fujisaki-okamoto #kem	DiceCTF 2022	24.82	Crypto	files wu 1

Challenges