@tan90909090 - AlpacaHack

tan90909090

@Tan90909090

AUTHORED CHALLENGES

OPEN DATE	CHALLENGE	SOLVES
2026/03/02	glibc's secret function Rev	116 solves
2026/02/06	misdirection Rev	139 solves
2026/02/02	read-a-binary Rev	192 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 HellCouple ja HellCouple	3 weeks ago
Writeup for free-comment (言語仕様等調べ付き) ja free-comment	last month
Writeup for Jerry's flag checker ja Jerry's flag checker	7 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
Alpaca Quest Rev Daily AlpacaHack	102 solves	last week
Stealerusk Rev Daily AlpacaHack B-SIDE	40 solves	last week
Noob programmer Pwn Daily AlpacaHack	92 solves	last week
CopperCopperCopper Crypto Daily AlpacaHack	84 solves	last week
Dancing Cursor Rev Misc Daily AlpacaHack	100 solves	last week
Pickle Loader Misc Daily AlpacaHack	109 solves	last week
Disappeared Pwn Daily AlpacaHack	104 solves	2 weeks ago
wages of sin() Rev Misc Daily AlpacaHack	85 solves	2 weeks ago
Alpaillier Crypto Daily AlpacaHack	108 solves	2 weeks ago
simple ROP Pwn Daily AlpacaHack	98 solves	2 weeks ago
nc magic Misc Daily AlpacaHack	121 solves	2 weeks ago
AAAAAAAAEEEEEEEESSSSSSSS Crypto Daily AlpacaHack	108 solves	2 weeks ago
destructuring Misc Daily AlpacaHack	126 solves	3 weeks ago
Alpaca-Llama Ranch Pwn Daily AlpacaHack	112 solves	3 weeks ago
Plz Login Web Daily AlpacaHack	195 solves	3 weeks ago
Compressor Misc Daily AlpacaHack	100 solves	3 weeks ago
misdirection Rev Daily AlpacaHack	139 solves	3 weeks ago
The World Misc Daily AlpacaHack	166 solves	3 weeks ago
HellCouple Crypto Daily AlpacaHack B-SIDE	64 solves	3 weeks ago
RRe_Time_Limiter Crypto Daily AlpacaHack	160 solves	3 weeks ago
Magic Engine Web Daily AlpacaHack	227 solves	4 weeks ago
read-a-binary Rev Daily AlpacaHack	192 solves	4 weeks ago
Inu Profile Web Daily AlpacaHack B-SIDE	85 solves	4 weeks ago
Substance Crypto Daily AlpacaHack	219 solves	last month
optimal-sort Misc Daily AlpacaHack	95 solves	last month
shellcode-101 Pwn Daily AlpacaHack	120 solves	last month
No JS Web Daily AlpacaHack	122 solves	last month
ToyPQC Crypto Daily AlpacaHack	100 solves	last month
git gc Misc Daily AlpacaHack	141 solves	last month
Stateless Auth Web Daily AlpacaHack	155 solves	last month
Paca Paca Authenticator Crypto Daily AlpacaHack	118 solves	last month
Bashrunner Misc Daily AlpacaHack	115 solves	last month
Animal Viewer Web Daily AlpacaHack	142 solves	last month
dockerstack Misc Daily AlpacaHack	170 solves	last month
system-v Rev Daily AlpacaHack	114 solves	last month
ChaChaCha Crypto Daily AlpacaHack	149 solves	last month
dice roll Web Daily AlpacaHack	187 solves	last month
Base Length Misc Daily AlpacaHack	147 solves	last month
Short Writer Pwn Daily AlpacaHack	115 solves	last month
Five Alpacas Crypto Daily AlpacaHack	180 solves	last month
free-comment Misc Daily AlpacaHack	144 solves	last month
I wanna be the Admin Web Daily AlpacaHack	249 solves	last month
Basic Buffer Overflow Pwn Daily AlpacaHack	165 solves	last month
crazython Rev Daily AlpacaHack	169 solves	last month
RSA2026 Crypto Daily AlpacaHack	192 solves	last month
SwapSwap Misc Daily AlpacaHack	254 solves	last month
secret-table Web Daily AlpacaHack	245 solves	last month
Square RSA Crypto Daily AlpacaHack	215 solves	last month
jailiaj Misc Daily AlpacaHack	258 solves	last month
Encoding Basics Misc Crypto Daily AlpacaHack	285 solves	last month
Fushigi Crawler Web Daily AlpacaHack	302 solves	last month
Ruby Flag Checker Rev Daily AlpacaHack	263 solves	2 months ago
super-tomato Crypto Daily AlpacaHack	344 solves	2 months ago
108 Misc Daily AlpacaHack	264 solves	2 months ago
login-bonus Pwn Daily AlpacaHack	232 solves	2 months ago
🐈 Web Daily AlpacaHack	285 solves	2 months ago
Flag Printer 2100 Rev Daily AlpacaHack	227 solves	2 months ago
power_obfus_royalty Rev Daily AlpacaHack	192 solves	2 months ago
Safe Prime Crypto Daily AlpacaHack	240 solves	2 months ago
Sugoi Flag Checker Rev Daily AlpacaHack	191 solves	2 months ago
Alpaca Bank Web Daily AlpacaHack	300 solves	2 months ago
Read Assembly Rev Daily AlpacaHack	291 solves	2 months ago
hit-and-miss Misc Daily AlpacaHack	345 solves	2 months ago
Integer Writer Pwn Daily AlpacaHack	290 solves	2 months ago
simpleoverflow Pwn Daily AlpacaHack	448 solves	2 months ago
Leaked Flag Checker Rev Daily AlpacaHack	502 solves	3 months ago
Emojify Web Daily AlpacaHack	521 solves	3 months ago
a fact of CTF Crypto Daily AlpacaHack	769 solves	3 months ago
AlpacaHack 2100 Misc Daily AlpacaHack	1343 solves	3 months ago
Jerry's flag checker Crypto AlpacaHack Round 13 (Crypto)	32 solves	7 months ago
F is for Flag Rev SECCON CTF 13 Quals	2 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	1454 solves	last year
Alpaca Poll Web AlpacaHack Round 7 (Web)	128 solves	last year
Treasure Hunt Web AlpacaHack Round 7 (Web)	266 solves	last year
wall Pwn AlpacaHack Round 6 (Pwn)	58 solves	last year
catcpy Pwn AlpacaHack Round 6 (Pwn)	144 solves	last year
inbound Pwn AlpacaHack Round 6 (Pwn)	204 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	47 solves	last year
Simple Flag Checker Rev AlpacaHack Round 4 (Rev)	125 solves	last year
qrime Crypto AlpacaHack Round 3 (Crypto)	250 solves	last year
Simple Login Web AlpacaHack Round 2 (Web)	587 solves	last year
hexecho Pwn AlpacaHack Round 1 (Pwn)	112 solves	last year
echo Pwn AlpacaHack Round 1 (Pwn)	345 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	21 solves	last year
kiwi Rev CakeCTF 2022	9 solves	last year
luau Rev CakeCTF 2022	34 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.