@hiikunz - AlpacaHack

hiikunz

@hiikun_Z

AUTHORED CHALLENGES

OPEN DATE	CHALLENGE	SOLVES
2026/01/08	SwapSwap Misc	187 solves
2026/01/06	Square RSA Crypto	165 solves
2026/01/02	Ruby Flag Checker Rev	188 solves
2025/12/24	Xmas Login Web	226 solves
2025/12/22	Rotten Beef Pwn	164 solves
2025/12/14	Flag Printer 2100 Rev	194 solves
2025/12/10	Alpaca Bank Web	250 solves

CTF HISTORY

START DATE	CTF	RANK
2025/07/20	AlpacaHack Round 13 (Crypto)	14 / 62
2025/07/06	AlpacaHack Round 12 (Crypto)	6 / 78
2025/05/17	AlpacaHack Round 11 (Web)	51 / 213
2025/03/01	SECCON CTF 13 決勝観戦CTF	7 / 233
2025/01/26	AlpacaHack Round 9 (Crypto)	20 / 138
2024/11/30	AlpacaHack Round 7 (Web)	73 / 458
2024/10/12	AlpacaHack Round 5 (Crypto)	14 / 247
2024/10/05	AlpacaHack Round 4 (Rev)	30 / 279
2024/09/15	AlpacaHack Round 3 (Crypto)	7 / 239
2024/09/01	AlpacaHack Round 2 (Web)	5 / 300
2024/08/18	AlpacaHack Round 1 (Pwn)	16 / 174

WRITEUPS

WRITEUP	CREATED AT
Writeup for Rotten Beef ja official Rotten Beef	2 weeks ago
Writeup for Flag Printer 2100 ja official Flag Printer 2100	3 weeks ago
Writeup for Alpaca Bank ja official Alpaca Bank	last month
Writeup for minimal-waf with <link rel="prefetch"> ja minimal-waf	last year
Writeup for AlpacaHack Round 3 (Crypto) ja AlpacaHack Round 3 (Crypto)	last year

SOLVED CHALLENGES

CHALLENGE	SOLVES	SOLVED AT
RSA2026 Crypto Daily AlpacaHack	149 solves	yesterday
SwapSwap Misc Daily AlpacaHack	187 solves	2 days ago
secret-table Web Daily AlpacaHack	173 solves	2 days ago
Square RSA Crypto Daily AlpacaHack	165 solves	4 days ago
jailiaj Misc Daily AlpacaHack	182 solves	5 days ago
Encoding Basics Crypto Misc Daily AlpacaHack	193 solves	6 days ago
Fushigi Crawler Web Daily AlpacaHack	206 solves	last week
Ruby Flag Checker Rev Daily AlpacaHack	188 solves	last week
super-tomato Crypto Daily AlpacaHack	236 solves	last week
108 Misc Daily AlpacaHack	198 solves	last week
RBG Crypto Daily AlpacaHack	107 solves	last week
one-p-rsa Crypto Daily AlpacaHack	169 solves	last week
cha-ll-enge Rev Daily AlpacaHack	126 solves	2 weeks ago
simpleoverwrite Pwn Daily AlpacaHack	139 solves	2 weeks ago
Useful Machine Rev Daily AlpacaHack	133 solves	2 weeks ago
Xmas Login Web Daily AlpacaHack	226 solves	2 weeks ago
cat3 Misc Daily AlpacaHack	182 solves	2 weeks ago
Rotten Beef Pwn Daily AlpacaHack	164 solves	2 weeks ago
Log Viewer Web Daily AlpacaHack	181 solves	2 weeks ago
RSA debug? Crypto Daily AlpacaHack	162 solves	3 weeks ago
omikuji Web Daily AlpacaHack	192 solves	3 weeks ago
alloc-101 Pwn Daily AlpacaHack	185 solves	3 weeks ago
Twilight Rev Daily AlpacaHack	187 solves	3 weeks ago
login-bonus Pwn Daily AlpacaHack	208 solves	3 weeks ago
🐈 Web Daily AlpacaHack	239 solves	3 weeks ago
Flag Printer 2100 Rev Daily AlpacaHack	194 solves	3 weeks ago
power_obfus_royalty Rev Daily AlpacaHack	173 solves	4 weeks ago
Safe Prime Crypto Daily AlpacaHack	217 solves	4 weeks ago
Sugoi Flag Checker Rev Daily AlpacaHack	173 solves	last month
Alpaca Bank Web Daily AlpacaHack	250 solves	last month
Read Assembly Rev Daily AlpacaHack	246 solves	last month
hit-and-miss Misc Daily AlpacaHack	274 solves	last month
Fully Padded RSA Crypto Daily AlpacaHack	197 solves	last month
size limit Crypto Daily AlpacaHack	244 solves	last month
simpleoverflow Pwn Daily AlpacaHack	363 solves	last month
Integer Writer Pwn Daily AlpacaHack	245 solves	last month
Leaked Flag Checker Rev Daily AlpacaHack	397 solves	last month
Emojify Web Daily AlpacaHack	425 solves	last month
a fact of CTF Crypto Daily AlpacaHack	599 solves	last month
AlpacaHack 2100 Misc Daily AlpacaHack	950 solves	last month
reiwa_rot13 Crypto SECCON CTF 13 Quals	23 solves	2 months ago
luau Rev CakeCTF 2022	31 solves	2 months ago
hidden Rev AlpacaHack Round 8 (Rev)	69 solves	2 months ago
masking tape Rev AlpacaHack Round 8 (Rev)	167 solves	2 months ago
RSAMPC Crypto AlpacaHack Round 9 (Crypto)	32 solves	2 months ago
Jerry's flag checker Crypto AlpacaHack Round 13 (Crypto)	28 solves	5 months ago
Flag Sharing Crypto AlpacaHack Round 12 (Crypto)	9 solves	6 months ago
OTEC Crypto AlpacaHack Round 12 (Crypto)	38 solves	6 months ago
RSARSARSARSARSARSA Crypto AlpacaHack Round 12 (Crypto)	75 solves	6 months ago
Jackpot Web AlpacaHack Round 11 (Web)	149 solves	7 months ago
Kangaroo Pwn AlpacaHack Round 10 (Pwn)	63 solves	9 months ago
Oyster Pwn AlpacaHack Round 10 (Pwn)	119 solves	9 months ago
minimal-waf Web AlpacaHack Round 7 (Web)	22 solves	last year
str.vs.cstr Pwn CakeCTF 2022	24 solves	last year
Alpaca Poll Web AlpacaHack Round 7 (Web)	124 solves	last year
Treasure Hunt Web AlpacaHack Round 7 (Web)	256 solves	last year
MathHash Misc zer0pts CTF 2022	2 solves	last year
Rock Door Crypto CakeCTF 2022	9 solves	last year
janken vs yoshiking 2 Crypto CakeCTF 2023	15 solves	last year
NNNN Crypto AlpacaHack Round 5 (Crypto)	44 solves	last year
miniblog++ Web zer0pts CTF 2022	7 solves	last year
OpenBio Web CakeCTF 2022	19 solves	last year
Warmuprofile Web zer0pts CTF 2023	24 solves	last year
Elliptic Ring RSA Crypto zer0pts CTF 2023	4 solves	last year
Modern Rome Pwn zer0pts CTF 2022	20 solves	last year
CurveCrypto Crypto zer0pts CTF 2022	6 solves	last year
readme 2022 Misc CakeCTF 2022	13 solves	last year
SquareRNG Crypto zer0pts CTF 2023	14 solves	last year
Anti-Fermat Crypto zer0pts CTF 2022	27 solves	last year
easy_factoring Crypto zer0pts CTF 2023	27 solves	last year
aush Pwn zer0pts CTF 2023	19 solves	last year
TOWFL Cheat Web CakeCTF 2023	48 solves	last year
decompile me Rev zer0pts CTF 2023	46 solves	last year
GitFile Explorer Web zer0pts CTF 2022	42 solves	last year
vtable4b Pwn CakeCTF 2023	59 solves	last year
nimrev Rev CakeCTF 2022	76 solves	last year
CakeGEAR Web CakeCTF 2022	76 solves	last year
read-write Pwn RTACTF 2023 Spring	39 solves	last year
write Pwn RTACTF 2023 Spring	83 solves	last year
before-write Pwn RTACTF 2023 Spring	153 solves	last year
catcpy Pwn AlpacaHack Round 6 (Pwn)	138 solves	last year
inbound Pwn AlpacaHack Round 6 (Pwn)	197 solves	last year
SchnorrLCG Crypto AlpacaHack Round 5 (Crypto)	20 solves	last year
XorshiftStream Crypto AlpacaHack Round 5 (Crypto)	59 solves	last year
Simple Flag Checker Rev AlpacaHack Round 4 (Rev)	121 solves	last year
Hat Trick Crypto AlpacaHack Round 3 (Crypto)	60 solves	last year
A Dance of Add and Mul Crypto AlpacaHack Round 3 (Crypto)	70 solves	last year
Rainbow Sweet Alchemist Crypto AlpacaHack Round 3 (Crypto)	119 solves	last year
qrime Crypto AlpacaHack Round 3 (Crypto)	242 solves	last year
brand new crypto Crypto CakeCTF 2022	21 solves	last year
simple signature Crypto CakeCTF 2023	26 solves	last year
ding-dong-ting-ping Crypto CakeCTF 2023	9 solves	last year
CaaS Web AlpacaHack Round 2 (Web)	89 solves	last year
Simple Login Web AlpacaHack Round 2 (Web)	538 solves	last year
Pico Note 1 Web AlpacaHack Round 2 (Web)	74 solves	last year
hexecho Pwn AlpacaHack Round 1 (Pwn)	109 solves	last year
echo Pwn AlpacaHack Round 1 (Pwn)	325 solves	last year
frozen cake Crypto CakeCTF 2022	68 solves	last year
Country DB Web CakeCTF 2023	214 solves	last year
Reused-AES Crypto RTACTF 2023 Spring	30 solves	last year
Collision-DES Crypto RTACTF 2023 Spring	35 solves	last year
XOR-CBC Crypto RTACTF 2023 Spring	74 solves	last year
Welcome Misc	1336 solves	last year

Only archived challenges are displayed here.