@tchen - AlpacaHack

tchen

@tepelchen501

AUTHORED CHALLENGES

OPEN DATE	CHALLENGE	SOLVES
2026/01/12	I wanna be the Admin Web	157 solves
2025/12/25	Useful Machine Rev	137 solves
2025/12/21	Log Viewer Web	183 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	3 weeks ago
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
RSA2026 Crypto Daily AlpacaHack	164 solves	5 days ago
Square RSA Crypto Daily AlpacaHack	177 solves	last week
super-tomato Crypto Daily AlpacaHack	248 solves	last week
Tiny Note Web AlpacaHack Round 11 (Web)	12 solves	8 months ago
Jackpot Web AlpacaHack Round 11 (Web)	149 solves	8 months ago
Kangaroo Pwn AlpacaHack Round 10 (Pwn)	63 solves	9 months ago
Oyster Pwn AlpacaHack Round 10 (Pwn)	119 solves	9 months ago
hidden Rev AlpacaHack Round 8 (Rev)	70 solves	last year
masking tape Rev AlpacaHack Round 8 (Rev)	168 solves	last year
echo Pwn AlpacaHack Round 1 (Pwn)	328 solves	last year
Alpaca Poll Web AlpacaHack Round 7 (Web)	124 solves	last year
Treasure Hunt Web AlpacaHack Round 7 (Web)	257 solves	last year
inbound Pwn AlpacaHack Round 6 (Pwn)	197 solves	last year
GitFile Explorer Web zer0pts CTF 2022	42 solves	last year
XorshiftStream Crypto AlpacaHack Round 5 (Crypto)	60 solves	last year
Simple Flag Checker Rev AlpacaHack Round 4 (Rev)	122 solves	last year
pytecode Rev AlpacaHack Round 4 (Rev)	24 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)	75 solves	last year
Simple Login Web AlpacaHack Round 2 (Web)	543 solves	last year
CaaS Web AlpacaHack Round 2 (Web)	90 solves	last year
read-write Pwn RTACTF 2023 Spring	39 solves	last year
write Pwn RTACTF 2023 Spring	83 solves	last year
Reused-AES Crypto RTACTF 2023 Spring	30 solves	last year
XOR-CBC Crypto RTACTF 2023 Spring	74 solves	last year
before-write Pwn RTACTF 2023 Spring	153 solves	last year
Welcome Misc	1347 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	13 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	24 solves	last year
AdBlog Web CakeCTF 2023	10 solves	last year
CakeGEAR Web CakeCTF 2022	76 solves	last year
TOWFL Cheat Web CakeCTF 2023	48 solves	last year
Country DB Web CakeCTF 2023	214 solves	last year

Only archived challenges are displayed here.