@ptr-yudai - AlpacaHack

@ptr-yudai

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ptr-yudai

@ptrYudai

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Overview Authored Challenges97 Organized CTFs11 Writeups3 Participated CTFs7 Solved Challenges12

OPEN DATE	CHALLENGE	SOLVES
2026/06/09	Gloinks Misc	23 solves
2026/05/30	login-bonus-3 Pwn	100 solves
2026/04/09	AES is dead Crypto	107 solves
2026/04/05	login-bonus-2 Pwn	117 solves
2025/12/16	login-bonus Pwn	315 solves
2025/12/12	Safe Prime Crypto	299 solves
2025/03/23	Takahashi Pwn	32 solves
2025/03/23	Kangaroo Pwn	79 solves
2025/03/23	Oyster Pwn	143 solves
2025/03/23	giraffe.ko Pwn	24 solves
2024/11/23	Paragraph Pwn	6 solves
2024/11/23	TOY/2 Pwn	5 solves
2024/11/23	Reaction Rev	5 solves
2024/11/23	packed Rev	18 solves
2024/11/23	F is for Flag Rev	7 solves
2024/11/03	catcpy Pwn	158 solves
2024/11/03	inbound Pwn	227 solves
2024/11/03	wall Pwn	64 solves
2024/11/03	ideabook Pwn	40 solves
2024/10/05	I2C Device Rev	15 solves
2024/08/18	deck Pwn	46 solves
2024/08/18	echo Pwn	401 solves
2024/08/18	hexecho Pwn	128 solves
2024/08/18	todo Pwn	27 solves
2024/06/15	bless Crypto	4 solves
2024/06/15	ARES Crypto	4 solves
2024/06/15	vote4b Blockchain	5 solves
2024/06/15	kbuf Pwn	5 solves
2023/11/11	imgchk Rev	11 solves
2023/11/11	Word Tower Cheat	6 solves
2023/11/11	bofww Pwn	43 solves
2023/11/11	nande Rev	18 solves
2023/11/11	cranelift Sandbox	5 solves
2023/11/11	decryptyou Crypto Pwn	7 solves
2023/11/11	AdBlog Web	13 solves
2023/11/11	OpenBio 2 Web	9 solves
2023/11/11	unicomp Sandbox	4 solves
2023/11/11	bofwow Pwn	17 solves
2023/11/11	Gaming VM Rev	12 solves
2023/11/11	vtable4b Pwn	72 solves
2023/11/11	Memorial Cabbage Pwn	25 solves
2023/11/11	TOWFL Cheat Web	56 solves
2023/11/11	Country DB Web	241 solves
2023/07/15	decompile me Rev	52 solves
2023/07/15	aush Pwn	24 solves
2023/07/15	SquareRNG Crypto	17 solves
2023/07/15	topology Rev	9 solves
2023/07/15	Himitsu Note Pwn	6 solves
2023/07/15	BrainJIT Pwn	10 solves
2023/07/15	qjail Pwn	8 solves
2023/07/15	fvm Rev	11 solves
2023/07/15	WISE Pwn	4 solves
2023/07/15	sharr Pwn	3 solves
2023/07/15	NetFS 2 Misc	5 solves
2023/07/15	NetFS 1 Misc	15 solves
2023/07/15	mimikyu Rev	20 solves
2023/07/15	ScoreShare Web	3 solves
2023/03/21	1R-AES Crypto	20 solves
2023/03/21	only-read Pwn	26 solves
2023/03/21	before-write Pwn	176 solves
2023/03/21	Collision-DES Crypto	39 solves
2023/03/21	write Pwn	98 solves
2023/03/21	read-write Pwn	48 solves
2023/03/21	XOR-CBC Crypto	83 solves
2023/03/21	Reused-AES Crypto	35 solves
2022/09/03	C-Sandbox Misc	7 solves
2022/09/03	ImageSurfing Web Misc	7 solves
2022/09/03	zundamon Rev Forensics	12 solves
2022/09/03	str.vs.cstr Pwn	31 solves
2022/09/03	kiwi Rev	11 solves
2022/09/03	matsushima3 Cheat	3 solves
2022/09/03	welkerme Pwn	34 solves
2022/09/03	CakeGEAR Web	87 solves
2022/09/03	readme 2022 Misc	16 solves
2022/09/03	smal arey Pwn	21 solves
2022/09/03	luau Rev	38 solves
2022/09/03	Cake Memory Cheat	5 solves
2022/09/03	OpenBio Web	26 solves
2022/09/03	nimrev Rev	85 solves
2022/09/03	Panda Memo Web	5 solves
2022/09/03	crc32pwn Pwn	3 solves
2022/03/19	Anti-Fermat Crypto	38 solves
2022/03/19	service Rev	12 solves
2022/03/19	kvstore Pwn	5 solves
2022/03/19	dreamland Rev	6 solves
2022/03/19	sbxnote Pwn	5 solves
2022/03/19	redis-lite Pwn	3 solves
2022/03/19	miniblog# Web	3 solves
2022/03/19	miniblog++ Web	15 solves
2022/03/19	MathHash Misc	6 solves
2022/03/19	q-solved Quantum Rev	4 solves
2022/03/19	accountant Pwn	9 solves
2022/03/19	0AV Misc	3 solves
2022/03/19	kRCE Pwn	9 solves
2022/03/19	Zer0TP Web Misc	2 solves
2022/03/19	MemSafeD Pwn	6 solves
2022/03/19	GitFile Explorer Web	52 solves