@tan90909090 - AlpacaHack

tan90909090

@Tan90909090

AUTHORED CHALLENGES

OPEN DATE	CHALLENGE	SOLVES
2026/03/25	Optimized expression Rev	115 solves
2026/03/02	glibc's secret function Rev	195 solves
2026/02/06	misdirection Rev	161 solves
2026/02/02	read-a-binary Rev	226 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 Simple Crackme ja Simple Crackme	3 weeks ago
Writeup for HellCouple ja HellCouple	2 months ago
Writeup for free-comment (言語仕様等調べ付き) ja free-comment	2 months ago
Writeup for Jerry's flag checker ja Jerry's flag checker	8 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
Simple Crackme Rev tkbctf5	54 solves	3 weeks ago
README.pdf Rev tkbctf5	148 solves	4 weeks ago
Alpaca Quest Rev Daily AlpacaHack	115 solves	last month
Stealerusk Rev Daily AlpacaHack B-SIDE	45 solves	last month
Noob programmer Pwn Daily AlpacaHack	105 solves	last month
CopperCopperCopper Crypto Daily AlpacaHack	92 solves	last month
Dancing Cursor Rev Misc Daily AlpacaHack	109 solves	last month
Pickle Loader Misc Daily AlpacaHack	117 solves	last month
Disappeared Pwn Daily AlpacaHack	115 solves	last month
wages of sin() Rev Misc Daily AlpacaHack	94 solves	last month
Alpaillier Crypto Daily AlpacaHack	117 solves	last month
simple ROP Pwn Daily AlpacaHack	114 solves	last month
nc magic Misc Daily AlpacaHack	133 solves	last month
AAAAAAAAEEEEEEEESSSSSSSS Crypto Daily AlpacaHack	121 solves	last month
destructuring Misc Daily AlpacaHack	144 solves	2 months ago
Alpaca-Llama Ranch Pwn Daily AlpacaHack	125 solves	2 months ago
Plz Login Web Daily AlpacaHack	225 solves	2 months ago
Compressor Misc Daily AlpacaHack	110 solves	2 months ago
misdirection Rev Daily AlpacaHack	161 solves	2 months ago
The World Misc Daily AlpacaHack	191 solves	2 months ago
HellCouple Crypto Daily AlpacaHack B-SIDE	70 solves	2 months ago
RRe_Time_Limiter Crypto Daily AlpacaHack	177 solves	2 months ago
Magic Engine Web Daily AlpacaHack	271 solves	2 months ago
read-a-binary Rev Daily AlpacaHack	226 solves	2 months ago
Inu Profile Web Daily AlpacaHack B-SIDE	95 solves	2 months ago
Substance Crypto Daily AlpacaHack	240 solves	2 months ago
optimal-sort Misc Daily AlpacaHack	104 solves	2 months ago
shellcode-101 Pwn Daily AlpacaHack	138 solves	2 months ago
No JS Web Daily AlpacaHack	132 solves	2 months ago
ToyPQC Crypto Daily AlpacaHack	108 solves	2 months ago
git gc Misc Daily AlpacaHack	154 solves	2 months ago
Stateless Auth Web Daily AlpacaHack	168 solves	2 months ago
Paca Paca Authenticator Crypto Daily AlpacaHack	127 solves	2 months ago
Bashrunner Misc Daily AlpacaHack	120 solves	2 months ago
Animal Viewer Web Daily AlpacaHack	154 solves	2 months ago
dockerstack Misc Daily AlpacaHack	180 solves	2 months ago
system-v Rev Daily AlpacaHack	118 solves	2 months ago
ChaChaCha Crypto Daily AlpacaHack	157 solves	2 months ago
dice roll Web Daily AlpacaHack	201 solves	2 months ago
Base Length Misc Daily AlpacaHack	157 solves	2 months ago
Short Writer Pwn Daily AlpacaHack	124 solves	2 months ago
Five Alpacas Crypto Daily AlpacaHack	196 solves	2 months ago
free-comment Misc Daily AlpacaHack	152 solves	2 months ago
I wanna be the Admin Web Daily AlpacaHack	283 solves	2 months ago
Basic Buffer Overflow Pwn Daily AlpacaHack	186 solves	3 months ago
crazython Rev Daily AlpacaHack	188 solves	3 months ago
RSA2026 Crypto Daily AlpacaHack	209 solves	3 months ago
SwapSwap Misc Daily AlpacaHack	286 solves	3 months ago
secret-table Web Daily AlpacaHack	270 solves	3 months ago
Square RSA Crypto Daily AlpacaHack	235 solves	3 months ago
jailiaj Misc Daily AlpacaHack	282 solves	3 months ago
Encoding Basics Misc Crypto Daily AlpacaHack	317 solves	3 months ago
Fushigi Crawler Web Daily AlpacaHack	343 solves	3 months ago
Ruby Flag Checker Rev Daily AlpacaHack	289 solves	3 months ago
super-tomato Crypto Daily AlpacaHack	389 solves	3 months ago
108 Misc Daily AlpacaHack	296 solves	3 months ago
login-bonus Pwn Daily AlpacaHack	255 solves	3 months ago
🐈 Web Daily AlpacaHack	309 solves	3 months ago
Flag Printer 2100 Rev Daily AlpacaHack	246 solves	3 months ago
power_obfus_royalty Rev Daily AlpacaHack	209 solves	3 months ago
Safe Prime Crypto SECCON Beginners CTF 2024	253 solves	4 months ago
Sugoi Flag Checker Rev Daily AlpacaHack	204 solves	4 months ago
Alpaca Bank Web Daily AlpacaHack	331 solves	4 months ago
Read Assembly Rev Daily AlpacaHack	312 solves	4 months ago
hit-and-miss Misc Daily AlpacaHack	387 solves	4 months ago
Integer Writer Pwn Daily AlpacaHack	325 solves	4 months ago
simpleoverflow Pwn SECCON Beginners CTF 2024	505 solves	4 months ago
Leaked Flag Checker Rev Daily AlpacaHack	567 solves	4 months ago
Emojify Web Daily AlpacaHack	594 solves	4 months ago
a fact of CTF Crypto Daily AlpacaHack	883 solves	4 months ago
AlpacaHack 2100 Misc Daily AlpacaHack	1633 solves	4 months ago
Jerry's flag checker Crypto AlpacaHack Round 13 (Crypto)	33 solves	8 months ago
F is for Flag Rev SECCON CTF 13 Quals	3 solves	last year
RSAMPC Crypto AlpacaHack Round 9 (Crypto)	35 solves	last year
subway Rev AlpacaHack Round 8 (Rev)	16 solves	last year
hidden Rev AlpacaHack Round 8 (Rev)	71 solves	last year
masking tape Rev AlpacaHack Round 8 (Rev)	173 solves	last year
Welcome Misc	1544 solves	last year
Alpaca Poll Web AlpacaHack Round 7 (Web)	129 solves	last year
Treasure Hunt Web AlpacaHack Round 7 (Web)	271 solves	last year
wall Pwn AlpacaHack Round 6 (Pwn)	59 solves	last year
catcpy Pwn AlpacaHack Round 6 (Pwn)	146 solves	last year
inbound Pwn AlpacaHack Round 6 (Pwn)	207 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	30 solves	last year
GitFile Explorer Web zer0pts CTF 2022	48 solves	last year
Simple Flag Checker Rev AlpacaHack Round 4 (Rev)	127 solves	last year
qrime Crypto AlpacaHack Round 3 (Crypto)	253 solves	last year
Simple Login Web AlpacaHack Round 2 (Web)	611 solves	last year
hexecho Pwn AlpacaHack Round 1 (Pwn)	114 solves	last year
echo Pwn AlpacaHack Round 1 (Pwn)	357 solves	last year
fvm Rev zer0pts CTF 2023	8 solves	last year
mimikyu Rev zer0pts CTF 2023	15 solves	last year
decompile me Rev zer0pts CTF 2023	48 solves	last year
aush Pwn zer0pts CTF 2023	22 solves	last year
kiwi Rev CakeCTF 2022	9 solves	last year
luau Rev CakeCTF 2022	34 solves	last year
welkerme Pwn CakeCTF 2022	26 solves	last year
frozen cake Crypto CakeCTF 2022	71 solves	last year
nimrev Rev CakeCTF 2022	79 solves	last year

Only archived challenges are displayed here.