@ptr-yudai - AlpacaHack

@ptr-yudai

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ptr-yudai

@ptrYudai

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Overview Authored Challenges97 Organized CTFs11 Writeups3 Participated CTFs6 Solved Challenges11

OPEN DATE	CHALLENGE	SOLVES
2026/06/09	Gloinks Misc	20 solves
2026/05/30	login-bonus-3 Pwn	89 solves
2026/04/09	AES is dead Crypto	102 solves
2026/04/05	login-bonus-2 Pwn	108 solves
2025/12/16	login-bonus Pwn	290 solves
2025/12/12	Safe Prime Crypto	286 solves
2025/03/23	Takahashi Pwn	30 solves
2025/03/23	Kangaroo Pwn	73 solves
2025/03/23	Oyster Pwn	138 solves
2025/03/23	giraffe.ko Pwn	23 solves
2024/11/23	Paragraph Pwn	5 solves
2024/11/23	TOY/2 Pwn	4 solves
2024/11/23	Reaction Rev	4 solves
2024/11/23	packed Rev	17 solves
2024/11/23	F is for Flag Rev	5 solves
2024/11/03	catcpy Pwn	153 solves
2024/11/03	inbound Pwn	217 solves
2024/11/03	wall Pwn	62 solves
2024/11/03	ideabook Pwn	38 solves
2024/10/05	I2C Device Rev	12 solves
2024/08/18	deck Pwn	44 solves
2024/08/18	echo Pwn	377 solves
2024/08/18	hexecho Pwn	123 solves
2024/08/18	todo Pwn	25 solves
2024/06/15	bless Crypto	2 solves
2024/06/15	ARES Crypto	2 solves
2024/06/15	vote4b Blockchain	4 solves
2024/06/15	kbuf Pwn	4 solves
2023/11/11	imgchk Rev	9 solves
2023/11/11	Word Tower Cheat	4 solves
2023/11/11	bofww Pwn	41 solves
2023/11/11	nande Rev	17 solves
2023/11/11	cranelift Sandbox	4 solves
2023/11/11	decryptyou Crypto Pwn	6 solves
2023/11/11	AdBlog Web	12 solves
2023/11/11	OpenBio 2 Web	8 solves
2023/11/11	unicomp Sandbox	3 solves
2023/11/11	bofwow Pwn	16 solves
2023/11/11	Gaming VM Rev	10 solves
2023/11/11	vtable4b Pwn	68 solves
2023/11/11	Memorial Cabbage Pwn	22 solves
2023/11/11	TOWFL Cheat Web	54 solves
2023/11/11	Country DB Web	234 solves
2023/07/15	decompile me Rev	49 solves
2023/07/15	aush Pwn	23 solves
2023/07/15	SquareRNG Crypto	16 solves
2023/07/15	topology Rev	7 solves
2023/07/15	Himitsu Note Pwn	5 solves
2023/07/15	BrainJIT Pwn	9 solves
2023/07/15	qjail Pwn	7 solves
2023/07/15	fvm Rev	9 solves
2023/07/15	WISE Pwn	3 solves
2023/07/15	sharr Pwn	2 solves
2023/07/15	NetFS 2 Misc	4 solves
2023/07/15	NetFS 1 Misc	13 solves
2023/07/15	mimikyu Rev	17 solves
2023/07/15	ScoreShare Web	2 solves
2023/03/21	1R-AES Crypto	19 solves
2023/03/21	only-read Pwn	25 solves
2023/03/21	before-write Pwn	168 solves
2023/03/21	Collision-DES Crypto	38 solves
2023/03/21	write Pwn	92 solves
2023/03/21	read-write Pwn	44 solves
2023/03/21	XOR-CBC Crypto	79 solves
2023/03/21	Reused-AES Crypto	34 solves
2022/09/03	C-Sandbox Misc	6 solves
2022/09/03	ImageSurfing Web Misc	6 solves
2022/09/03	zundamon Rev Forensics	10 solves
2022/09/03	str.vs.cstr Pwn	29 solves
2022/09/03	kiwi Rev	10 solves
2022/09/03	matsushima3 Cheat	2 solves
2022/09/03	welkerme Pwn	32 solves
2022/09/03	CakeGEAR Web	84 solves
2022/09/03	readme 2022 Misc	15 solves
2022/09/03	smal arey Pwn	20 solves
2022/09/03	luau Rev	35 solves
2022/09/03	Cake Memory Cheat	3 solves
2022/09/03	OpenBio Web	24 solves
2022/09/03	nimrev Rev	81 solves
2022/09/03	Panda Memo Web	4 solves
2022/09/03	crc32pwn Pwn	2 solves
2022/03/19	Anti-Fermat Crypto	34 solves
2022/03/19	service Rev	10 solves
2022/03/19	kvstore Pwn	4 solves
2022/03/19	dreamland Rev	4 solves
2022/03/19	sbxnote Pwn	4 solves
2022/03/19	miniblog# Web	2 solves
2022/03/19	miniblog++ Web	12 solves
2022/03/19	MathHash Misc	5 solves
2022/03/19	q-solved Quantum Rev	2 solves
2022/03/19	accountant Pwn	8 solves
2022/03/19	0AV Misc	2 solves
2022/03/19	kRCE Pwn	8 solves
2022/03/19	redis-lite Pwn	1 solve
2022/03/19	Zer0TP Web Misc	1 solve
2022/03/19	MemSafeD Pwn	5 solves
2022/03/19	GitFile Explorer Web	50 solves