@koufu193 - AlpacaHack

koufu193

@koufu193

CTF HISTORY

START DATE	CTF	RANK
2025/07/20	AlpacaHack Round 13 (Crypto)	21 / 62
2025/07/06	AlpacaHack Round 12 (Crypto)	30 / 78
2025/05/17	AlpacaHack Round 11 (Web)	12 / 213
2025/03/23	AlpacaHack Round 10 (Pwn)	43 / 95
2025/03/01	SECCON CTF 13 決勝観戦CTF	8 / 233
2025/01/26	AlpacaHack Round 9 (Crypto)	20 / 138
2024/12/30	AlpacaHack Round 8 (Rev)	61 / 316
2024/11/30	AlpacaHack Round 7 (Web)	76 / 458
2024/11/03	AlpacaHack Round 6 (Pwn)	57 / 197
2024/10/12	AlpacaHack Round 5 (Crypto)	32 / 247
2024/10/05	AlpacaHack Round 4 (Rev)	41 / 279
2024/09/15	AlpacaHack Round 3 (Crypto)	92 / 239
2024/09/01	AlpacaHack Round 2 (Web)	85 / 300
2024/08/18	AlpacaHack Round 1 (Pwn)	54 / 174

WRITEUPS

WRITEUP	CREATED AT
Writeup for 9️⃣ ja 9️⃣	last week

SOLVED CHALLENGES

CHALLENGE	SOLVES	SOLVED AT
Free Coupon Web Daily AlpacaHack	106 solves	yesterday
flag.txt Misc Daily AlpacaHack	95 solves	3 days ago
README.pdf Rev tkbctf5	140 solves	4 days ago
Heuristic IPPON Misc Daily AlpacaHack	136 solves	4 days ago
Another Login Challenge Web Daily AlpacaHack	100 solves	5 days ago
Find XOR key Crypto Daily AlpacaHack	107 solves	6 days ago
kappa overflow Pwn Daily AlpacaHack	103 solves	6 days ago
💯 Misc Daily AlpacaHack	102 solves	last week
FLAG OVER Misc Daily AlpacaHack	104 solves	last week
guess.js Misc Daily AlpacaHack	89 solves	last week
hit-and-miss Misc Daily AlpacaHack	359 solves	last week
cha-ll-enge Rev Daily AlpacaHack	147 solves	last week
Rotten Beef Pwn Daily AlpacaHack	192 solves	last week
omikuji Web Daily AlpacaHack	234 solves	last week
simpleoverwrite Pwn Daily AlpacaHack	182 solves	last week
simpleoverflow Pwn Daily AlpacaHack	465 solves	last week
Xmas Login Web Daily AlpacaHack	322 solves	last week
cat3 Misc Daily AlpacaHack	208 solves	last week
login-bonus Pwn Daily AlpacaHack	237 solves	last week
🐈 Web Daily AlpacaHack	291 solves	last week
Log Viewer Web Daily AlpacaHack	215 solves	last week
Alpaca Bank Web Daily AlpacaHack	310 solves	last week
Emojify Web Daily AlpacaHack	544 solves	last week
a fact of CTF Crypto Daily AlpacaHack	810 solves	last week
AlpacaHack 2100 Misc Daily AlpacaHack	1452 solves	last week
one-p-rsa Crypto Daily AlpacaHack	215 solves	last week
108 Misc Daily AlpacaHack	272 solves	last week
git gc Misc Daily AlpacaHack	145 solves	last week
Stateless Auth Web Daily AlpacaHack	161 solves	last week
No JS Web Daily AlpacaHack	126 solves	last week
Pickle Loader Misc Daily AlpacaHack	111 solves	last week
Alpaillier Crypto Daily AlpacaHack	112 solves	last week
high and low Crypto Daily AlpacaHack	78 solves	last week
magic number Misc Daily AlpacaHack	107 solves	last week
Resume Maker Web Daily AlpacaHack B-SIDE	46 solves	last week
Alert my Flag Web Daily AlpacaHack	133 solves	last week
Flag Printer 2026 Misc Daily AlpacaHack	159 solves	2 weeks ago
Bashrunner Misc Daily AlpacaHack	116 solves	2 weeks ago
Animal Viewer Web Daily AlpacaHack	148 solves	2 weeks ago
system-v Rev Daily AlpacaHack	115 solves	2 weeks ago
dice roll Web Daily AlpacaHack	193 solves	2 weeks ago
Base Length Misc Daily AlpacaHack	148 solves	2 weeks ago
dockerstack Misc Daily AlpacaHack	172 solves	2 weeks ago
Basic Buffer Overflow Pwn Daily AlpacaHack	170 solves	2 weeks ago
glibc's secret function Rev Daily AlpacaHack	156 solves	2 weeks ago
pyjs Misc Daily AlpacaHack	77 solves	2 weeks ago
Bars Web Daily AlpacaHack	218 solves	2 weeks ago
AAAAAAAAEEEEEEEESSSSSSSS Crypto Daily AlpacaHack	114 solves	2 weeks ago
simple ROP Pwn Daily AlpacaHack	102 solves	2 weeks ago
Alpaca-Llama Ranch Pwn Daily AlpacaHack	114 solves	2 weeks ago
9️⃣ Misc Daily AlpacaHack B-SIDE	45 solves	2 weeks ago
Five Alpacas Crypto Daily AlpacaHack	184 solves	2 weeks ago
free-comment Misc Daily AlpacaHack	145 solves	2 weeks ago
I wanna be the Admin Web Daily AlpacaHack	262 solves	2 weeks ago
crazython Rev Daily AlpacaHack	173 solves	2 weeks ago
RSA2026 Crypto Daily AlpacaHack	197 solves	2 weeks ago
SwapSwap Misc Daily AlpacaHack	259 solves	2 weeks ago
secret-table Web Daily AlpacaHack	251 solves	2 weeks ago
Square RSA Crypto Daily AlpacaHack	219 solves	2 weeks ago
jailiaj Misc Daily AlpacaHack	260 solves	2 weeks ago
Encoding Basics Misc Crypto Daily AlpacaHack	289 solves	2 weeks ago
Fushigi Crawler Web Daily AlpacaHack	315 solves	2 weeks ago
Ruby Flag Checker Rev Daily AlpacaHack	269 solves	2 weeks ago
super-tomato Crypto Daily AlpacaHack	356 solves	2 weeks ago
ChaChaCha Crypto Daily AlpacaHack	152 solves	2 weeks ago
Dancing Cursor Rev Misc Daily AlpacaHack	101 solves	2 weeks ago
Rock Paper Scissors Lizard Spock Web Daily AlpacaHack	88 solves	2 weeks ago
nc magic Misc Daily AlpacaHack	127 solves	2 weeks ago
Plz Login Web Daily AlpacaHack	208 solves	2 weeks ago
Compressor Misc Daily AlpacaHack	104 solves	2 weeks ago
Alpaca Quest Rev Daily AlpacaHack	107 solves	2 weeks ago
The World Misc Daily AlpacaHack	176 solves	2 weeks ago
misdirection Rev Daily AlpacaHack	149 solves	2 weeks ago
read-a-binary Rev Daily AlpacaHack	209 solves	2 weeks ago
Substance Crypto Daily AlpacaHack	229 solves	2 weeks ago
RRe_Time_Limiter Crypto Daily AlpacaHack	168 solves	2 weeks ago
Magic Engine Web Daily AlpacaHack	245 solves	2 weeks ago
useful-gadget Pwn Daily AlpacaHack B-SIDE	43 solves	2 weeks ago
Stealerusk Rev Daily AlpacaHack B-SIDE	40 solves	2 weeks ago
Useful Machine Rev Daily AlpacaHack	153 solves	2 months ago
Twilight Rev Daily AlpacaHack	219 solves	2 months ago
power_obfus_royalty Rev Daily AlpacaHack	195 solves	3 months ago
Sugoi Flag Checker Rev Daily AlpacaHack	195 solves	3 months ago
Read Assembly Rev Daily AlpacaHack	298 solves	3 months ago
Leaked Flag Checker Rev Daily AlpacaHack	524 solves	3 months ago
Flag Printer 2100 Rev Daily AlpacaHack	233 solves	3 months ago
Jerry's flag checker Crypto AlpacaHack Round 13 (Crypto)	32 solves	8 months ago
RSARSARSARSARSARSA Crypto AlpacaHack Round 12 (Crypto)	79 solves	8 months ago
Jackpot Web AlpacaHack Round 11 (Web)	160 solves	10 months ago
service Rev zer0pts CTF 2022	8 solves	last year
hidden Rev AlpacaHack Round 8 (Rev)	71 solves	last year
masking tape Rev AlpacaHack Round 8 (Rev)	173 solves	last year
Simple Login Web AlpacaHack Round 2 (Web)	594 solves	last year
Treasure Hunt Web AlpacaHack Round 7 (Web)	266 solves	last year
inbound Pwn AlpacaHack Round 6 (Pwn)	205 solves	last year
decompile me Rev zer0pts CTF 2023	48 solves	last year
Simple Flag Checker Rev AlpacaHack Round 4 (Rev)	125 solves	last year
echo Pwn AlpacaHack Round 1 (Pwn)	348 solves	last year
write Pwn RTACTF 2023 Spring	85 solves	last year
before-write Pwn RTACTF 2023 Spring	160 solves	last year
XOR-CBC Crypto RTACTF 2023 Spring	77 solves	last year
Welcome Misc	1504 solves	last year
Country DB Web CakeCTF 2023	220 solves	last year

Only archived challenges are displayed here.