@tchen - AlpacaHack

tchen

@tepelchen501

AUTHORED CHALLENGES

OPEN DATE	CHALLENGE	SOLVES
2025/12/25	Useful Machine Rev	123 solves
2025/12/21	Log Viewer Web	171 solves

CTF HISTORY

START DATE	CTF	RANK
2025/05/17	AlpacaHack Round 11 (Web)	4 / 213
2025/03/23	AlpacaHack Round 10 (Pwn)	19 / 95
2025/03/01	SECCON CTF 13 決勝観戦CTF	11 / 233
2024/12/30	AlpacaHack Round 8 (Rev)	15 / 316
2024/11/30	AlpacaHack Round 7 (Web)	33 / 458
2024/11/03	AlpacaHack Round 6 (Pwn)	45 / 197
2024/10/12	AlpacaHack Round 5 (Crypto)	28 / 247
2024/09/15	AlpacaHack Round 3 (Crypto)	92 / 239
2024/08/18	AlpacaHack Round 1 (Pwn)	58 / 174

WRITEUPS

WRITEUP	CREATED AT
Author's Writeup for Log Viewer en official Log Viewer	last week
Writeup for AlpacaHack Round 7 (Web) en AlpacaHack Round 7 (Web)	last year
Writeup for pytecode ja pytecode	last year

SOLVED CHALLENGES

CHALLENGE	SOLVES	SOLVED AT
super-tomato Crypto Daily AlpacaHack	167 solves	yesterday
Tiny Note Web AlpacaHack Round 11 (Web)	12 solves	7 months ago
Jackpot Web AlpacaHack Round 11 (Web)	146 solves	7 months ago
Kangaroo Pwn AlpacaHack Round 10 (Pwn)	61 solves	9 months ago
Oyster Pwn AlpacaHack Round 10 (Pwn)	117 solves	9 months ago
hidden Rev AlpacaHack Round 8 (Rev)	68 solves	last year
masking tape Rev AlpacaHack Round 8 (Rev)	166 solves	last year
echo Pwn AlpacaHack Round 1 (Pwn)	318 solves	last year
Alpaca Poll Web AlpacaHack Round 7 (Web)	122 solves	last year
Treasure Hunt Web AlpacaHack Round 7 (Web)	253 solves	last year
inbound Pwn AlpacaHack Round 6 (Pwn)	196 solves	last year
GitFile Explorer Web zer0pts CTF 2022	41 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
pytecode Rev AlpacaHack Round 4 (Rev)	23 solves	last year
Panda Memo Web CakeCTF 2022	2 solves	last year
Pico Note 2 Web AlpacaHack Round 2 (Web)	8 solves	last year
Pico Note 1 Web AlpacaHack Round 2 (Web)	73 solves	last year
Simple Login Web AlpacaHack Round 2 (Web)	527 solves	last year
CaaS Web AlpacaHack Round 2 (Web)	87 solves	last year
read-write Pwn RTACTF 2023 Spring	37 solves	last year
write Pwn RTACTF 2023 Spring	82 solves	last year
Reused-AES Crypto RTACTF 2023 Spring	30 solves	last year
XOR-CBC Crypto RTACTF 2023 Spring	72 solves	last year
before-write Pwn RTACTF 2023 Spring	152 solves	last year
Welcome Misc	1314 solves	last year
Neko Note Web zer0pts CTF 2023	9 solves	last year
OpenBio 2 Web CakeCTF 2023	6 solves	last year
readme 2022 Misc CakeCTF 2022	12 solves	last year
OpenBio Web CakeCTF 2022	19 solves	last year
jqi Web zer0pts CTF 2023	12 solves	last year
Warmuprofile Web zer0pts CTF 2023	23 solves	last year
AdBlog Web CakeCTF 2023	10 solves	last year
CakeGEAR Web CakeCTF 2022	75 solves	last year
TOWFL Cheat Web CakeCTF 2023	47 solves	last year
Country DB Web CakeCTF 2023	210 solves	last year

Only archived challenges are displayed here.