@tan90909090 - AlpacaHack

tan90909090

@Tan90909090

AUTHORED CHALLENGES

OPEN DATE	CHALLENGE	SOLVES
2026/04/12	strange filename Misc	136 solves
2026/03/25	Optimized expression Rev	118 solves
2026/03/02	glibc's secret function Rev	198 solves
2026/02/06	misdirection Rev	165 solves
2026/02/02	read-a-binary Rev	231 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	last month
Writeup for HellCouple ja HellCouple	2 months ago
Writeup for free-comment (言語仕様等調べ付き) ja free-comment	3 months ago
Writeup for Jerry's flag checker ja Jerry's flag checker	9 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	55 solves	last month
README.pdf Rev tkbctf5	150 solves	last month
Alpaca Quest Rev Daily AlpacaHack	117 solves	last month
Stealerusk Rev Daily AlpacaHack B-SIDE	46 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	119 solves	last month
Disappeared Pwn Daily AlpacaHack	116 solves	last month
wages of sin() Rev Misc Daily AlpacaHack	94 solves	last month
Alpaillier Crypto Daily AlpacaHack	119 solves	2 months ago
simple ROP Pwn Daily AlpacaHack	114 solves	2 months ago
nc magic Misc Daily AlpacaHack	135 solves	2 months ago
AAAAAAAAEEEEEEEESSSSSSSS Crypto Daily AlpacaHack	124 solves	2 months ago
destructuring Misc Daily AlpacaHack	148 solves	2 months ago
Alpaca-Llama Ranch Pwn Daily AlpacaHack	126 solves	2 months ago
Plz Login Web Daily AlpacaHack	228 solves	2 months ago
Compressor Misc Daily AlpacaHack	110 solves	2 months ago
misdirection Rev Daily AlpacaHack	165 solves	2 months ago
The World Misc Daily AlpacaHack	195 solves	2 months ago
HellCouple Crypto Daily AlpacaHack B-SIDE	71 solves	2 months ago
RRe_Time_Limiter Crypto Daily AlpacaHack	181 solves	2 months ago
Magic Engine Web Daily AlpacaHack	274 solves	2 months ago
read-a-binary Rev Daily AlpacaHack	231 solves	2 months ago
Inu Profile Web Daily AlpacaHack B-SIDE	96 solves	2 months ago
Substance Crypto Daily AlpacaHack	244 solves	2 months ago
optimal-sort Misc Daily AlpacaHack	104 solves	2 months ago
shellcode-101 Pwn Daily AlpacaHack	139 solves	2 months ago
No JS Web Daily AlpacaHack	133 solves	2 months ago
ToyPQC Crypto Daily AlpacaHack	108 solves	2 months ago
git gc Misc Daily AlpacaHack	156 solves	2 months ago
Stateless Auth Web Daily AlpacaHack	171 solves	2 months ago
Paca Paca Authenticator Crypto Daily AlpacaHack	129 solves	2 months ago
Bashrunner Misc Daily AlpacaHack	122 solves	2 months ago
Animal Viewer Web Daily AlpacaHack	155 solves	2 months ago
dockerstack Misc Daily AlpacaHack	181 solves	2 months ago
system-v Rev Daily AlpacaHack	118 solves	2 months ago
ChaChaCha Crypto Daily AlpacaHack	158 solves	2 months ago
dice roll Web Daily AlpacaHack	202 solves	2 months ago
Base Length Misc Daily AlpacaHack	157 solves	3 months ago
Short Writer Pwn Daily AlpacaHack	124 solves	3 months ago
Five Alpacas Crypto Daily AlpacaHack	199 solves	3 months ago
free-comment Misc Daily AlpacaHack	152 solves	3 months ago
I wanna be the Admin Web Daily AlpacaHack	285 solves	3 months ago
Basic Buffer Overflow Pwn Daily AlpacaHack	186 solves	3 months ago
crazython Rev Daily AlpacaHack	189 solves	3 months ago
RSA2026 Crypto Daily AlpacaHack	210 solves	3 months ago
SwapSwap Misc Daily AlpacaHack	291 solves	3 months ago
secret-table Web Daily AlpacaHack	274 solves	3 months ago
Square RSA Crypto Daily AlpacaHack	236 solves	3 months ago
jailiaj Misc Daily AlpacaHack	283 solves	3 months ago
Encoding Basics Misc Crypto Daily AlpacaHack	324 solves	3 months ago
Fushigi Crawler Web Daily AlpacaHack	347 solves	3 months ago
Ruby Flag Checker Rev Daily AlpacaHack	292 solves	3 months ago
super-tomato Crypto Daily AlpacaHack	395 solves	3 months ago
108 Misc Daily AlpacaHack	297 solves	3 months ago
login-bonus Pwn Daily AlpacaHack	256 solves	4 months ago
🐈 Web Daily AlpacaHack	316 solves	4 months ago
Flag Printer 2100 Rev Daily AlpacaHack	249 solves	4 months ago
power_obfus_royalty Rev Daily AlpacaHack	210 solves	4 months ago
Safe Prime Crypto SECCON Beginners CTF 2024	256 solves	4 months ago
Sugoi Flag Checker Rev Daily AlpacaHack	207 solves	4 months ago
Alpaca Bank Web Daily AlpacaHack	334 solves	4 months ago
Read Assembly Rev Daily AlpacaHack	317 solves	4 months ago
hit-and-miss Misc Daily AlpacaHack	388 solves	4 months ago
Integer Writer Pwn Daily AlpacaHack	329 solves	4 months ago
simpleoverflow Pwn SECCON Beginners CTF 2024	512 solves	4 months ago
Leaked Flag Checker Rev Daily AlpacaHack	573 solves	4 months ago
Emojify Web Daily AlpacaHack	597 solves	4 months ago
a fact of CTF Crypto Daily AlpacaHack	891 solves	4 months ago
AlpacaHack 2100 Misc Daily AlpacaHack	1665 solves	4 months ago
Jerry's flag checker Crypto AlpacaHack Round 13 (Crypto)	33 solves	9 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)	174 solves	last year
Welcome Misc	1549 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)	208 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)	255 solves	last year
Simple Login Web AlpacaHack Round 2 (Web)	612 solves	last year
hexecho Pwn AlpacaHack Round 1 (Pwn)	115 solves	last year
echo Pwn AlpacaHack Round 1 (Pwn)	358 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.