@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 month

SOLVED CHALLENGES

CHALLENGE	SOLVES	SOLVED AT
pacapaca sc Pwn Daily AlpacaHack	67 solves	yesterday
AES is dead Crypto Daily AlpacaHack	81 solves	yesterday
Panic Web Daily AlpacaHack	119 solves	3 days ago
Oyster Pwn AlpacaHack Round 10 (Pwn)	129 solves	4 days ago
1️⃣ Misc Daily AlpacaHack	149 solves	4 days ago
No Content Web Daily AlpacaHack	147 solves	5 days ago
login-bonus-2 Pwn Daily AlpacaHack	82 solves	6 days ago
The Horn Crypto Daily AlpacaHack	97 solves	last week
Impossible Puzzle Web Daily AlpacaHack	178 solves	last week
You are my friend Crypto Daily AlpacaHack	154 solves	last week
Message For You Web Daily AlpacaHack	187 solves	last week
Pyrunner Misc Daily AlpacaHack B-SIDE	38 solves	last week
silence Misc Daily AlpacaHack	99 solves	last week
fsb-202 Pwn Daily AlpacaHack B-SIDE	40 solves	last week
Tar Uploader Web Daily AlpacaHack	100 solves	last week
destructuring Misc Daily AlpacaHack	143 solves	2 weeks ago
Dot Chain Misc Daily AlpacaHack	84 solves	2 weeks ago
memset note Pwn Daily AlpacaHack B-SIDE	44 solves	2 weeks ago
ret2basics Pwn Daily AlpacaHack B-SIDE	44 solves	2 weeks ago
Inu Profile Web Daily AlpacaHack B-SIDE	95 solves	2 weeks ago
EncodeDecode Misc Daily AlpacaHack	85 solves	2 weeks ago
encrypted-p Crypto Daily AlpacaHack	100 solves	2 weeks ago
optimal-sort Misc Daily AlpacaHack	104 solves	2 weeks ago
PPPPParse Misc Daily AlpacaHack	98 solves	2 weeks ago
wages of sin() Rev Misc Daily AlpacaHack	93 solves	2 weeks ago
hit-and-hit Misc Daily AlpacaHack	86 solves	2 weeks ago
Optimized expression Rev Daily AlpacaHack	115 solves	2 weeks ago
Disappeared Pwn Daily AlpacaHack	115 solves	2 weeks ago
Noob programmer Pwn Daily AlpacaHack	105 solves	2 weeks ago
One Byte Padding Oracle Attack Crypto Daily AlpacaHack	74 solves	2 weeks ago
Fully Padded RSA Crypto Daily AlpacaHack	237 solves	2 weeks ago
RSA debug? Crypto Daily AlpacaHack	192 solves	2 weeks ago
alloc-101 Pwn Daily AlpacaHack	218 solves	2 weeks ago
You are being redirected Web Daily AlpacaHack	113 solves	2 weeks ago
Paca Paca Authenticator Crypto Daily AlpacaHack	127 solves	2 weeks ago
Short Writer Pwn Daily AlpacaHack	124 solves	2 weeks ago
The future path Crypto Daily AlpacaHack	92 solves	2 weeks ago
bloom Crypto Daily AlpacaHack	86 solves	2 weeks ago
shellcode-101 Pwn Daily AlpacaHack	138 solves	2 weeks ago
Safe Prime Crypto SECCON Beginners CTF 2024	253 solves	2 weeks ago
size limit Crypto Daily AlpacaHack	317 solves	2 weeks ago
Alpaca Rangers Web Daily AlpacaHack	148 solves	2 weeks ago
Integer Writer Pwn Daily AlpacaHack	325 solves	2 weeks ago
vuln4vuln Pwn Daily AlpacaHack	96 solves	2 weeks ago
Alpacker Rev Daily AlpacaHack	78 solves	2 weeks ago
What's Next Web Daily AlpacaHack	110 solves	2 weeks ago
crypto_666 Crypto Daily AlpacaHack	105 solves	2 weeks ago
canary leak Pwn Daily AlpacaHack	106 solves	3 weeks ago
Flags for the FLAG Misc Daily AlpacaHack	149 solves	3 weeks ago
Free Coupon Web Daily AlpacaHack	135 solves	3 weeks ago
flag.txt Misc Daily AlpacaHack	110 solves	4 weeks ago
README.pdf Rev tkbctf5	148 solves	4 weeks ago
Heuristic IPPON Misc Daily AlpacaHack	167 solves	4 weeks ago
Another Login Challenge Web Daily AlpacaHack	123 solves	last month
Find XOR key Crypto Daily AlpacaHack	150 solves	last month
kappa overflow Pwn Daily AlpacaHack	121 solves	last month
💯 Misc Daily AlpacaHack	116 solves	last month
FLAG OVER Misc Daily AlpacaHack	115 solves	last month
guess.js Misc Daily AlpacaHack	103 solves	last month
hit-and-miss Misc Daily AlpacaHack	387 solves	last month
cha-ll-enge Rev SECCON Beginners CTF 2024	158 solves	last month
Rotten Beef Pwn Daily AlpacaHack	204 solves	last month
omikuji Web Daily AlpacaHack	249 solves	last month
simpleoverwrite Pwn SECCON Beginners CTF 2024	197 solves	last month
simpleoverflow Pwn SECCON Beginners CTF 2024	505 solves	last month
Xmas Login Web Daily AlpacaHack	353 solves	last month
cat3 Misc Daily AlpacaHack	221 solves	last month
login-bonus Pwn Daily AlpacaHack	255 solves	last month
🐈 Web Daily AlpacaHack	309 solves	last month
Log Viewer Web Daily AlpacaHack	225 solves	last month
Alpaca Bank Web Daily AlpacaHack	331 solves	last month
Emojify Web Daily AlpacaHack	593 solves	last month
a fact of CTF Crypto Daily AlpacaHack	883 solves	last month
AlpacaHack 2100 Misc Daily AlpacaHack	1632 solves	last month
one-p-rsa Crypto Daily AlpacaHack	231 solves	last month
108 Misc Daily AlpacaHack	296 solves	last month
git gc Misc Daily AlpacaHack	154 solves	last month
Stateless Auth Web Daily AlpacaHack	168 solves	last month
No JS Web Daily AlpacaHack	132 solves	last month
Pickle Loader Misc Daily AlpacaHack	117 solves	last month
Alpaillier Crypto Daily AlpacaHack	117 solves	last month
high and low Crypto Daily AlpacaHack	87 solves	last month
magic number Misc Daily AlpacaHack	124 solves	last month
Resume Maker Web Daily AlpacaHack B-SIDE	53 solves	last month
Alert my Flag Web Daily AlpacaHack	166 solves	last month
Flag Printer 2026 Misc Daily AlpacaHack	204 solves	last month
Bashrunner Misc Daily AlpacaHack	120 solves	last month
Animal Viewer Web Daily AlpacaHack	154 solves	last month
system-v Rev Daily AlpacaHack	118 solves	last month
dice roll Web Daily AlpacaHack	201 solves	last month
Base Length Misc Daily AlpacaHack	157 solves	last month
dockerstack Misc Daily AlpacaHack	180 solves	last month
Basic Buffer Overflow Pwn Daily AlpacaHack	186 solves	last month
glibc's secret function Rev Daily AlpacaHack	195 solves	last month
pyjs Misc Daily AlpacaHack	82 solves	last month
Bars Web Daily AlpacaHack	298 solves	last month
AAAAAAAAEEEEEEEESSSSSSSS Crypto Daily AlpacaHack	121 solves	last month
simple ROP Pwn Daily AlpacaHack	114 solves	last month
Alpaca-Llama Ranch Pwn Daily AlpacaHack	125 solves	last month
9️⃣ Misc Daily AlpacaHack B-SIDE	47 solves	last month
Five Alpacas Crypto Daily AlpacaHack	196 solves	last month
free-comment Misc Daily AlpacaHack	152 solves	last month
I wanna be the Admin Web Daily AlpacaHack	283 solves	last month
crazython Rev Daily AlpacaHack	188 solves	last month
RSA2026 Crypto Daily AlpacaHack	209 solves	last month
SwapSwap Misc Daily AlpacaHack	286 solves	last month
secret-table Web Daily AlpacaHack	270 solves	last month
Square RSA Crypto Daily AlpacaHack	235 solves	last month
jailiaj Misc Daily AlpacaHack	281 solves	last month
Encoding Basics Misc Crypto Daily AlpacaHack	317 solves	last month
Fushigi Crawler Web Daily AlpacaHack	343 solves	last month
Ruby Flag Checker Rev Daily AlpacaHack	289 solves	last month
super-tomato Crypto Daily AlpacaHack	388 solves	last month
ChaChaCha Crypto Daily AlpacaHack	157 solves	last month
Dancing Cursor Rev Misc Daily AlpacaHack	109 solves	last month
Rock Paper Scissors Lizard Spock Web Daily AlpacaHack	96 solves	last month
nc magic Misc Daily AlpacaHack	133 solves	last month
Plz Login Web Daily AlpacaHack	225 solves	last month
Compressor Misc Daily AlpacaHack	110 solves	last month
Alpaca Quest Rev Daily AlpacaHack	115 solves	last month
The World Misc Daily AlpacaHack	191 solves	last month
misdirection Rev Daily AlpacaHack	161 solves	last month
read-a-binary Rev Daily AlpacaHack	225 solves	last month
Substance Crypto Daily AlpacaHack	240 solves	last month
RRe_Time_Limiter Crypto Daily AlpacaHack	177 solves	last month
Magic Engine Web Daily AlpacaHack	271 solves	last month
useful-gadget Pwn Daily AlpacaHack B-SIDE	46 solves	last month
Stealerusk Rev Daily AlpacaHack B-SIDE	45 solves	last month
Useful Machine Rev Daily AlpacaHack	158 solves	3 months ago
Twilight Rev Daily AlpacaHack	230 solves	3 months ago
power_obfus_royalty Rev Daily AlpacaHack	209 solves	3 months ago
Sugoi Flag Checker Rev Daily AlpacaHack	204 solves	3 months ago
Read Assembly Rev Daily AlpacaHack	312 solves	3 months ago
Leaked Flag Checker Rev Daily AlpacaHack	567 solves	3 months ago
Flag Printer 2100 Rev Daily AlpacaHack	246 solves	3 months ago
Jerry's flag checker Crypto AlpacaHack Round 13 (Crypto)	33 solves	8 months ago
RSARSARSARSARSARSA Crypto AlpacaHack Round 12 (Crypto)	79 solves	9 months ago
Jackpot Web AlpacaHack Round 11 (Web)	163 solves	11 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)	611 solves	last year
Treasure Hunt Web AlpacaHack Round 7 (Web)	271 solves	last year
inbound Pwn AlpacaHack Round 6 (Pwn)	207 solves	last year
decompile me Rev zer0pts CTF 2023	48 solves	last year
Simple Flag Checker Rev AlpacaHack Round 4 (Rev)	127 solves	last year
echo Pwn AlpacaHack Round 1 (Pwn)	357 solves	last year
write Pwn RTACTF 2023 Spring	85 solves	last year
before-write Pwn RTACTF 2023 Spring	162 solves	last year
XOR-CBC Crypto RTACTF 2023 Spring	77 solves	last year
Welcome Misc	1544 solves	last year
Country DB Web CakeCTF 2023	224 solves	last year

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