@ptr-yudai - AlpacaHack

ptr-yudai

@ptrYudai

AUTHORED CHALLENGES

OPEN DATE	CHALLENGE	SOLVES
2025/12/16	login-bonus Pwn	177 solves
2025/12/12	Safe Prime Crypto	190 solves
2025/03/23	giraffe.ko Pwn	19 solves
2025/03/23	Oyster Pwn	114 solves
2025/03/23	Takahashi Pwn	26 solves
2025/03/23	Kangaroo Pwn	60 solves
2024/11/23	Paragraph Pwn	3 solves
2024/11/23	TOY/2 Pwn	2 solves
2024/11/23	F is for Flag Rev	2 solves
2024/11/23	Reaction Rev	0 solves
2024/11/23	packed Rev	12 solves
2024/11/03	wall Pwn	54 solves
2024/11/03	inbound Pwn	195 solves
2024/11/03	ideabook Pwn	32 solves
2024/11/03	catcpy Pwn	135 solves
2024/10/05	I2C Device Rev	8 solves
2024/08/18	deck Pwn	39 solves
2024/08/18	todo Pwn	22 solves
2024/08/18	hexecho Pwn	108 solves
2024/08/18	echo Pwn	316 solves
2023/11/11	imgchk Rev	7 solves
2023/11/11	Gaming VM Rev	6 solves
2023/11/11	bofwow Pwn	12 solves
2023/11/11	bofww Pwn	34 solves
2023/11/11	unicomp Sandbox	1 solve
2023/11/11	Word Tower Cheat	2 solves
2023/11/11	Memorial Cabbage Pwn	18 solves
2023/11/11	decryptyou Crypto Pwn	4 solves
2023/11/11	Country DB Web	209 solves
2023/11/11	cranelift Sandbox	2 solves
2023/11/11	OpenBio 2 Web	6 solves
2023/11/11	TOWFL Cheat Web	47 solves
2023/11/11	AdBlog Web	10 solves
2023/11/11	nande Rev	13 solves
2023/11/11	vtable4b Pwn	58 solves
2023/07/15	WISE Pwn	0 solves
2023/07/15	NetFS 1 Misc	10 solves
2023/07/15	mimikyu Rev	13 solves
2023/07/15	decompile me Rev	44 solves
2023/07/15	NetFS 2 Misc	2 solves
2023/07/15	sharr Pwn	0 solves
2023/07/15	Himitsu Note Pwn	3 solves
2023/07/15	topology Rev	5 solves
2023/07/15	qjail Pwn	4 solves
2023/07/15	aush Pwn	19 solves
2023/07/15	fvm Rev	6 solves
2023/07/15	SquareRNG Crypto	13 solves
2023/07/15	ScoreShare Web	1 solve
2023/07/15	BrainJIT Pwn	5 solves
2023/03/21	1R-AES Crypto	15 solves
2023/03/21	write Pwn	81 solves
2023/03/21	read-write Pwn	37 solves
2023/03/21	XOR-CBC Crypto	70 solves
2023/03/21	Reused-AES Crypto	30 solves
2023/03/21	before-write Pwn	151 solves
2023/03/21	Collision-DES Crypto	34 solves
2023/03/21	only-read Pwn	19 solves
2022/09/03	ImageSurfing Web Misc	4 solves
2022/09/03	str.vs.cstr Pwn	24 solves
2022/09/03	OpenBio Web	19 solves
2022/09/03	kiwi Rev	7 solves
2022/09/03	CakeGEAR Web	75 solves
2022/09/03	matsushima3 Cheat	0 solves
2022/09/03	readme 2022 Misc	11 solves
2022/09/03	C-Sandbox Misc	4 solves
2022/09/03	Cake Memory Cheat	1 solve
2022/09/03	luau Rev	31 solves
2022/09/03	smal arey Pwn	16 solves
2022/09/03	welkerme Pwn	23 solves
2022/09/03	crc32pwn Pwn	0 solves
2022/09/03	Panda Memo Web	2 solves
2022/09/03	zundamon Rev Forensics	5 solves
2022/09/03	nimrev Rev	72 solves
2022/03/19	kRCE Pwn	3 solves
2022/03/19	sbxnote Pwn	2 solves
2022/03/19	GitFile Explorer Web	41 solves
2022/03/19	dreamland Rev	1 solve
2022/03/19	miniblog++ Web	7 solves
2022/03/19	accountant Pwn	6 solves
2022/03/19	MathHash Misc	2 solves
2022/03/19	service Rev	6 solves
2022/03/19	Anti-Fermat Crypto	26 solves
2022/03/19	miniblog# Web	0 solves
2022/03/19	q-solved Rev Quantum	0 solves
2022/03/19	redis-lite Pwn	0 solves
2022/03/19	Zer0TP Web Misc	0 solves
2022/03/19	MemSafeD Pwn	3 solves
2022/03/19	kvstore Pwn	2 solves
2022/03/19	0AV Misc	0 solves

CTF HISTORY

START DATE	CTF	RANK
2025/03/23	AlpacaHack Round 10 (Pwn)	43 / 95
2025/03/01	SECCON CTF 13 決勝観戦CTF	94 / 233
2024/12/30	AlpacaHack Round 8 (Rev)	7 / 316
2024/11/30	AlpacaHack Round 7 (Web)	79 / 458
2024/09/01	AlpacaHack Round 2 (Web)	11 / 300
2024/08/18	AlpacaHack Round 1 (Pwn)	58 / 174

WRITEUPS

WRITEUP	CREATED AT
login-bonus (Daily AlpacaHack 2025/12/17) 公式Writeup - CTFするぞ ja official login-bonus	6 days ago
AlpacaHack Round 6 (Pwn)のWriteup - CTFするぞ ja official AlpacaHack Round 6 (Pwn)	last year
AlpacaHack Round 1 (Pwn)のWriteup - CTFするぞ ja official AlpacaHack Round 1 (Pwn)	last year

SOLVED CHALLENGES

CHALLENGE	SOLVES	SOLVED AT
masking tape Rev AlpacaHack Round 8 (Rev)	165 solves	11 months ago
hidden Rev AlpacaHack Round 8 (Rev)	67 solves	11 months ago
subway Rev AlpacaHack Round 8 (Rev)	13 solves	11 months ago
CaaS Web AlpacaHack Round 2 (Web)	87 solves	last year
Simple Login Web AlpacaHack Round 2 (Web)	518 solves	last year

Only archived challenges are displayed here.