CTF challenges & writeups

87 challenges in family ⊕ crypto:bruteforce-solve ✕ clear · browse all techniques

Challenge	CTF	Weight	Category	Has
Night_Shift #pthread-scheduling-analysis #exhaustive-brute-force #fnv-1a-hash	BDSec 2026	15.62	Reverse	files wu 1
Cipher #passphrase-bruteforce	KubSTU 2026	24.83	Misc	files wu 1
Untitled_Encore #reversing #constraint-solving	SekaiCTF 2026	79.25	Reverse	files wu 1
concord #finite-field #brute-force	VuwCTF 2026	25.00	Crypto	files wu 1
Gondola #reversing #webassembly #z3	SekaiCTF 2025	55.00	Reverse	files wu 1
LockDown #hardware-reversing #verilog #z3	WolvCTF 2025	47.25	Reverse	files wu 1
Quick_Recovery #qr-code-reconstruction #brute-force-permutation	1337UP 2024	–	Misc	files wu 1
rps_casino #lfsr #gf2-linear-system #z3 #state-recovery	DiceCTF 2024 Quals	54.40	Crypto	files wu 2
Rust #per-byte-bruteforce	ImaginaryCTF 2024	49.81	Reverse	files wu 1
Build_A_Flag_Workshop #reversing #constraint-solving	SunshineCTF 2024	38.57	Reverse	files wu 1
CEOs_Lost_Password #z3 #constraint-solving #java-reversing	UofTCTF 2024	23.90	Reverse	files wu 1
Random_Maze #z3 #constraint-solving	UofTCTF 2024	23.90	Reverse	files wu 2
Tridea #meet-in-the-middle (mitm)#block-cipher #anti-debugging	VolgaCTF 2024 Quals	35.91	Reverse	files wu 1
befudged_up #befunge #side-channel #brute-force	WolvCTF 2024	35.25	Reverse	files wu 1
two_wrongs #quantum-circuit-reversal #brute-force	corCTF 2024	55.00	Crypto	files wu 1
FlagChecker #z3-constraint-solving #rust-reversing	1337UP 2023	24.23	Reverse	files wu 2
Knapsack #knapsack #meet-in-the-middle (mitm)	BackdoorCTF 2023	–	Crypto	files wu 2
Classic_Checkers #constraint-solving #lisp	BlueHens 2023	24.61	Reverse	files wu 3
4aes #aes #meet-in-the-middle (mitm)#bruteforce	Defcamp 2023 Quals	–	Crypto	files wu 1
Cube_Hash #brute-force	Hack.lu 2023	94.73	Reverse	files wu 1
switcheroo #gdb-bruteforce	LA 2023	–	Reverse	files wu 2
Reduced_Reduced_Instruction_Set_2 #custom-vm #bytecode-reversing #z3	PatriotCTF 2023	24.52	Reverse	files wu 1
bivalves #z3 #state-recovery	PlaidCTF 2023	100.00	Crypto	files wu 2
the-other-css #z3 #lfsr #css-cipher	PlaidCTF 2023	100.00	Crypto	files wu 1
Either_or_Neither_nor #xor #repeating-key #bruteforce	RITSEC 2023	–	Crypto	files wu 1
Diffecientwo #hash-collision #z3 #murmurhash3	SekaiCTF 2023	24.86	Crypto	files wu 1
pay-to-win #brute-force	TJCTF 2023	–	Web	files wu 1
Secret_Sequence #low-entropy-key #bruteforce	TSG 2023	–	Misc	files wu 2
Streamer #stream-cipher #bruteforce	TSG 2023	–	Crypto	files wu 3
WednesdayThursdayFriday #z3 #constraint-solving	VishwaCTF 2023	22.69	Reverse	files wu 1
Sheep_loves_Maths #zip-crc32-bruteforce #archive-forensics	vsCTF 2023	23.32	Misc	files wu 1
NetFS_1 #oracle-attack #password-bruteforce	zer0pts 2023	52.62	Misc	files wu 1
NetFS_2 #timing-attack #side-channel #password-bruteforce	zer0pts 2023	52.62	Misc	files wu 1
typed #rust-type-system #z3 #reversing	DiceCTF 2022	24.82	Reverse	files wu 1
baby-baby-rsa #brute-force	HSCTF 2022	–	Crypto	files wu 2
Unimod #shift-cipher-bruteforce	NahamCon 2022	24.61	Crypto	files wu 3
MeetMeInMiddle #meet-in-the-middle (mitm)	OFPPT 2022	–	Crypto	files wu 2
CorruptAAAAd #rsa #corrupted-private-key #public-exponent-bruteforce	PatriotCTF 2022	24.52	Crypto	files wu 2
TimeCapsule #stream-cipher #keystream-recovery #permutation-bruteforce	SekaiCTF 2022	24.86	Crypto	files wu 3
shares_v2 #meet-in-the-middle (mitm)#linear-algebra	TetCTF 2022	36.72	Crypto	files wu 1

Challenges