@ptr-yudai - AlpacaHack

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ptr-yudai

@ptrYudai

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Overview Authored Challenges95 Organized CTFs11 Writeups3 Participated CTFs6 Solved Challenges9

OPEN DATE	CHALLENGE	SOLVES
2026/04/09	AES is dead Crypto	95 solves
2026/04/05	login-bonus-2 Pwn	96 solves
2025/12/16	login-bonus Pwn	267 solves
2025/12/12	Safe Prime Crypto	266 solves
2025/03/23	Oyster Pwn	131 solves
2025/03/23	giraffe.ko Pwn	21 solves
2025/03/23	Kangaroo Pwn	69 solves
2025/03/23	Takahashi Pwn	29 solves
2024/11/23	TOY/2 Pwn	2 solves
2024/11/23	Paragraph Pwn	4 solves
2024/11/23	F is for Flag Rev	3 solves
2024/11/23	Reaction Rev	2 solves
2024/11/23	packed Rev	15 solves
2024/11/03	inbound Pwn	209 solves
2024/11/03	wall Pwn	59 solves
2024/11/03	catcpy Pwn	148 solves
2024/11/03	ideabook Pwn	37 solves
2024/10/05	I2C Device Rev	10 solves
2024/08/18	todo Pwn	24 solves
2024/08/18	deck Pwn	43 solves
2024/08/18	echo Pwn	363 solves
2024/08/18	hexecho Pwn	117 solves
2024/06/15	ARES Crypto	1 solve
2024/06/15	bless Crypto	1 solve
2024/06/15	kbuf Pwn	2 solves
2024/06/15	vote4b Blockchain	2 solves
2023/11/11	Gaming VM Rev	9 solves
2023/11/11	bofww Pwn	38 solves
2023/11/11	bofwow Pwn	15 solves
2023/11/11	imgchk Rev	8 solves
2023/11/11	decryptyou Crypto Pwn	5 solves
2023/11/11	Memorial Cabbage Pwn	21 solves
2023/11/11	unicomp Sandbox	2 solves
2023/11/11	OpenBio 2 Web	7 solves
2023/11/11	Word Tower Cheat	3 solves
2023/11/11	cranelift Sandbox	3 solves
2023/11/11	Country DB Web	225 solves
2023/11/11	AdBlog Web	11 solves
2023/11/11	nande Rev	16 solves
2023/11/11	vtable4b Pwn	62 solves
2023/11/11	TOWFL Cheat Web	53 solves
2023/07/15	mimikyu Rev	16 solves
2023/07/15	aush Pwn	22 solves
2023/07/15	topology Rev	6 solves
2023/07/15	qjail Pwn	6 solves
2023/07/15	WISE Pwn	2 solves
2023/07/15	decompile me Rev	48 solves
2023/07/15	fvm Rev	8 solves
2023/07/15	Himitsu Note Pwn	4 solves
2023/07/15	sharr Pwn	0 solves
2023/07/15	NetFS 1 Misc	12 solves
2023/07/15	NetFS 2 Misc	3 solves
2023/07/15	SquareRNG Crypto	15 solves
2023/07/15	ScoreShare Web	1 solve
2023/07/15	BrainJIT Pwn	7 solves
2023/03/21	1R-AES Crypto	17 solves
2023/03/21	XOR-CBC Crypto	78 solves
2023/03/21	write Pwn	88 solves
2023/03/21	read-write Pwn	41 solves
2023/03/21	Reused-AES Crypto	33 solves
2023/03/21	before-write Pwn	163 solves
2023/03/21	Collision-DES Crypto	37 solves
2023/03/21	only-read Pwn	23 solves
2022/09/03	Cake Memory Cheat	2 solves
2022/09/03	ImageSurfing Web Misc	5 solves
2022/09/03	readme 2022 Misc	14 solves
2022/09/03	CakeGEAR Web	82 solves
2022/09/03	str.vs.cstr Pwn	27 solves
2022/09/03	kiwi Rev	9 solves
2022/09/03	smal arey Pwn	18 solves
2022/09/03	matsushima3 Cheat	1 solve
2022/09/03	OpenBio Web	21 solves
2022/09/03	C-Sandbox Misc	5 solves
2022/09/03	luau Rev	34 solves
2022/09/03	crc32pwn Pwn	0 solves
2022/09/03	welkerme Pwn	26 solves
2022/09/03	Panda Memo Web	3 solves
2022/09/03	zundamon Rev Forensics	8 solves
2022/09/03	nimrev Rev	80 solves
2022/03/19	miniblog# Web	1 solve
2022/03/19	q-solved Quantum Rev	1 solve
2022/03/19	Zer0TP Web Misc	0 solves
2022/03/19	kRCE Pwn	6 solves
2022/03/19	service Rev	8 solves
2022/03/19	MemSafeD Pwn	4 solves
2022/03/19	dreamland Rev	3 solves
2022/03/19	accountant Pwn	7 solves
2022/03/19	sbxnote Pwn	2 solves
2022/03/19	Anti-Fermat Crypto	31 solves
2022/03/19	MathHash Misc	4 solves
2022/03/19	GitFile Explorer Web	48 solves
2022/03/19	miniblog++ Web	11 solves
2022/03/19	redis-lite Pwn	0 solves
2022/03/19	kvstore Pwn	2 solves
2022/03/19	0AV Misc	1 solve