@tan90909090 - AlpacaHack

tan90909090

@Tan90909090

AUTHORED CHALLENGES

OPEN DATE	CHALLENGE	SOLVES
2026/02/02	read-a-binary Rev	142 solves

CTF HISTORY

START DATE	CTF	RANK
2025/07/20	AlpacaHack Round 13 (Crypto)	13 / 62
2025/07/06	AlpacaHack Round 12 (Crypto)	40 / 78
2025/05/17	AlpacaHack Round 11 (Web)	65 / 213
2025/03/01	SECCON CTF 13 決勝観戦CTF	179 / 233
2025/01/26	AlpacaHack Round 9 (Crypto)	10 / 138
2024/12/30	AlpacaHack Round 8 (Rev)	8 / 316
2024/11/30	AlpacaHack Round 7 (Web)	25 / 458
2024/11/03	AlpacaHack Round 6 (Pwn)	19 / 197
2024/10/05	AlpacaHack Round 4 (Rev)	13 / 279
2024/09/15	AlpacaHack Round 3 (Crypto)	49 / 239
2024/09/01	AlpacaHack Round 2 (Web)	61 / 300
2024/08/18	AlpacaHack Round 1 (Pwn)	17 / 174

WRITEUPS

WRITEUP	CREATED AT
Writeup for free-comment (言語仕様等調べ付き) ja free-comment	2 weeks ago
Writeup for Jerry's flag checker ja Jerry's flag checker	6 months ago
Writeup for RSAMPC using z3-solver ja RSAMPC	last year
Writeup for AlpacaHack Round 8 (Rev) (masking tape, hidden, subway) ja AlpacaHack Round 8 (Rev)	last year
Writeup for AlpacaHack Round 7 (Web) (Treasure Hunt, Alpaca Poll) ja AlpacaHack Round 7 (Web)	last year
Writeup for AlpacaHack Round 6 (Pwn) (inbound, catcpy, wall) ja AlpacaHack Round 6 (Pwn)	last year
Writeup for zer0pts CTF 2022 (GitFile Explorer, Anti-Fermat, Modern Rome, service) ja zer0pts CTF 2022	last year
Writeup for Simple Flag Checker ja Simple Flag Checker	last year
Writeup for qrime ja qrime	last year
Writeup for Simple Login ja Simple Login	last year
Writeup for AlpacaHack Round 1 (Pwn) (echo, hexecho) ja AlpacaHack Round 1 (Pwn)	last year
Writeup for zer0pts CTF 2023 (aush, decomple me, mimikyu, fvm) ja zer0pts CTF 2023	last year
Writeup for CakeCTF 2022 (frozen cake, welkerme, nimrev, luau, kiwi) ja CakeCTF 2022	last year

SOLVED CHALLENGES

CHALLENGE	SOLVES	SOLVED AT
Magic Engine Web Daily AlpacaHack	131 solves	yesterday
read-a-binary Rev Daily AlpacaHack	142 solves	yesterday
Inu Profile Web Daily AlpacaHack B-side	66 solves	2 days ago
Substance Crypto Daily AlpacaHack	150 solves	3 days ago
optimal-sort Misc Daily AlpacaHack	89 solves	5 days ago
shellcode-101 Pwn Daily AlpacaHack	109 solves	last week
No JS Web Daily AlpacaHack	108 solves	last week
ToyPQC Crypto Daily AlpacaHack	97 solves	last week
git gc Misc Daily AlpacaHack	135 solves	last week
Stateless Auth Web Daily AlpacaHack	142 solves	last week
Paca Paca Authenticator Crypto Daily AlpacaHack	112 solves	last week
Bashrunner Misc Daily AlpacaHack	109 solves	last week
Animal Viewer Web Daily AlpacaHack	128 solves	2 weeks ago
dockerstack Misc Daily AlpacaHack	156 solves	2 weeks ago
system-v Rev Daily AlpacaHack	108 solves	2 weeks ago
ChaChaCha Crypto Daily AlpacaHack	141 solves	2 weeks ago
dice roll Web Daily AlpacaHack	169 solves	2 weeks ago
Base Length Misc Daily AlpacaHack	137 solves	2 weeks ago
Short Writer Pwn Daily AlpacaHack	110 solves	2 weeks ago
Five Alpacas Crypto Daily AlpacaHack	163 solves	3 weeks ago
free-comment Misc Daily AlpacaHack	141 solves	3 weeks ago
I wanna be the Admin Web Daily AlpacaHack	209 solves	3 weeks ago
Basic Buffer Overflow Pwn Daily AlpacaHack	154 solves	3 weeks ago
crazython Rev Daily AlpacaHack	162 solves	3 weeks ago
RSA2026 Crypto Daily AlpacaHack	184 solves	3 weeks ago
SwapSwap Misc Daily AlpacaHack	231 solves	3 weeks ago
secret-table Web Daily AlpacaHack	224 solves	4 weeks ago
Square RSA Crypto Daily AlpacaHack	204 solves	4 weeks ago
jailiaj Misc Daily AlpacaHack	230 solves	last month
Encoding Basics Misc Crypto Daily AlpacaHack	258 solves	last month
Fushigi Crawler Web Daily AlpacaHack	268 solves	last month
Ruby Flag Checker Rev Daily AlpacaHack	239 solves	last month
super-tomato Crypto Daily AlpacaHack	307 solves	last month
108 Misc Daily AlpacaHack	241 solves	last month
login-bonus Pwn Daily AlpacaHack	219 solves	last month
🐈 Web Daily AlpacaHack	265 solves	last month
Flag Printer 2100 Rev Daily AlpacaHack	210 solves	last month
power_obfus_royalty Rev Daily AlpacaHack	185 solves	last month
Safe Prime Crypto Daily AlpacaHack	228 solves	last month
Sugoi Flag Checker Rev Daily AlpacaHack	185 solves	last month
Alpaca Bank Web Daily AlpacaHack	280 solves	last month
Read Assembly Rev Daily AlpacaHack	266 solves	last month
hit-and-miss Misc Daily AlpacaHack	300 solves	last month
Integer Writer Pwn Daily AlpacaHack	274 solves	2 months ago
simpleoverflow Pwn Daily AlpacaHack	406 solves	2 months ago
Leaked Flag Checker Rev Daily AlpacaHack	455 solves	2 months ago
Emojify Web Daily AlpacaHack	485 solves	2 months ago
a fact of CTF Crypto Daily AlpacaHack	691 solves	2 months ago
AlpacaHack 2100 Misc Daily AlpacaHack	1133 solves	2 months ago
Jerry's flag checker Crypto AlpacaHack Round 13 (Crypto)	30 solves	6 months ago
F is for Flag Rev SECCON CTF 13 Quals	2 solves	12 months ago
RSAMPC Crypto AlpacaHack Round 9 (Crypto)	34 solves	last year
subway Rev AlpacaHack Round 8 (Rev)	15 solves	last year
hidden Rev AlpacaHack Round 8 (Rev)	71 solves	last year
masking tape Rev AlpacaHack Round 8 (Rev)	170 solves	last year
Welcome Misc	1400 solves	last year
Alpaca Poll Web AlpacaHack Round 7 (Web)	126 solves	last year
Treasure Hunt Web AlpacaHack Round 7 (Web)	264 solves	last year
wall Pwn AlpacaHack Round 6 (Pwn)	58 solves	last year
catcpy Pwn AlpacaHack Round 6 (Pwn)	141 solves	last year
inbound Pwn AlpacaHack Round 6 (Pwn)	202 solves	last year
service Rev zer0pts CTF 2022	8 solves	last year
Modern Rome Pwn zer0pts CTF 2022	24 solves	last year
Anti-Fermat Crypto zer0pts CTF 2022	29 solves	last year
GitFile Explorer Web zer0pts CTF 2022	45 solves	last year
Simple Flag Checker Rev AlpacaHack Round 4 (Rev)	125 solves	last year
qrime Crypto AlpacaHack Round 3 (Crypto)	245 solves	last year
Simple Login Web AlpacaHack Round 2 (Web)	560 solves	last year
hexecho Pwn AlpacaHack Round 1 (Pwn)	111 solves	last year
echo Pwn AlpacaHack Round 1 (Pwn)	335 solves	last year
fvm Rev zer0pts CTF 2023	7 solves	last year
mimikyu Rev zer0pts CTF 2023	14 solves	last year
decompile me Rev zer0pts CTF 2023	48 solves	last year
aush Pwn zer0pts CTF 2023	21 solves	last year
kiwi Rev CakeCTF 2022	9 solves	last year
luau Rev CakeCTF 2022	33 solves	last year
welkerme Pwn CakeCTF 2022	25 solves	last year
frozen cake Crypto CakeCTF 2022	70 solves	last year
nimrev Rev CakeCTF 2022	78 solves	last year

Only archived challenges are displayed here.