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kodai

@kodai_06_it

CTF HISTORY

START DATECTFRANK

2025/03/01

SECCON CTF 13 決勝観戦CTF
96 / 233

2024/11/30

AlpacaHack Round 7 (Web)
79 / 458

2024/09/15

AlpacaHack Round 3 (Crypto)
92 / 239

WRITEUPS

WRITEUPCREATED AT
Writeup for Fully Padded RSA
ja
Fully Padded RSA

3 months ago

SOLVED CHALLENGES

CHALLENGESOLVES

SOLVED AT

The future path
Crypto
Daily AlpacaHack

79 solves

yesterday

flag.txt
Misc
Daily AlpacaHack

92 solves

yesterday

Heuristic IPPON
Misc
Daily AlpacaHack

134 solves

2 days ago

Another Login Challenge
Web
Daily AlpacaHack

98 solves

4 days ago

kappa overflow
Pwn
Daily AlpacaHack

103 solves

4 days ago

Find XOR key
Crypto
Daily AlpacaHack

106 solves

6 days ago

💯
Misc
Daily AlpacaHack

101 solves

last week

FLAG OVER
Misc
Daily AlpacaHack

103 solves

last week

guess.js
Misc
Daily AlpacaHack

89 solves

last week

high and low
Crypto
Daily AlpacaHack

78 solves

last week

magic number
Misc
Daily AlpacaHack

105 solves

last week

Alert my Flag
Web
Daily AlpacaHack

132 solves

last week

Flag Printer 2026
Misc
Daily AlpacaHack

156 solves

last week

glibc's secret function
Rev
Daily AlpacaHack

153 solves

2 weeks ago

Bars
Web
Daily AlpacaHack

214 solves

2 weeks ago

pyjs
Misc
Daily AlpacaHack

77 solves

2 weeks ago

useful-gadget
Pwn
Daily AlpacaHack B-SIDE

43 solves

2 weeks ago

Rock Paper Scissors Lizard Spock
Web
Daily AlpacaHack

88 solves

2 weeks ago

One Byte Padding Oracle Attack
Crypto
Daily AlpacaHack

69 solves

2 weeks ago

Alpaca Rangers
Web
Daily AlpacaHack

132 solves

2 weeks ago

hit-and-hit
Misc
Daily AlpacaHack

81 solves

2 weeks ago

Stealerusk
Rev
Daily AlpacaHack B-SIDE

40 solves

3 weeks ago

Alpaca Quest
Rev
Daily AlpacaHack

107 solves

3 weeks ago

Noob programmer
Pwn
Daily AlpacaHack

93 solves

3 weeks ago

CopperCopperCopper
Crypto
Daily AlpacaHack

86 solves

3 weeks ago

Dancing Cursor
RevMisc
Daily AlpacaHack

101 solves

3 weeks ago

Pickle Loader
Misc
Daily AlpacaHack

111 solves

3 weeks ago

Disappeared
Pwn
Daily AlpacaHack

105 solves

3 weeks ago

ECRSA
Crypto
Daily AlpacaHack B-SIDE

45 solves

4 weeks ago

wages of sin()
RevMisc
Daily AlpacaHack

86 solves

4 weeks ago

ret2basics
Pwn
Daily AlpacaHack B-SIDE

39 solves

4 weeks ago

Alpaillier
Crypto
Daily AlpacaHack

112 solves

4 weeks ago

You are being redirected
Web
Daily AlpacaHack

109 solves

4 weeks ago

simple ROP
Pwn
Daily AlpacaHack

101 solves

last month

nc magic
Misc
Daily AlpacaHack

127 solves

last month

invisible-grep
Misc
Daily AlpacaHack B-SIDE

37 solves

last month

AAAAAAAAEEEEEEEESSSSSSSS
Crypto
Daily AlpacaHack

114 solves

last month

destructuring
Misc
Daily AlpacaHack

135 solves

last month

Alpaca-Llama Ranch
Pwn
Daily AlpacaHack

114 solves

last month

Plz Login
Web
Daily AlpacaHack

208 solves

last month

Compressor
Misc
Daily AlpacaHack

104 solves

last month

HellCouple
Crypto
Daily AlpacaHack B-SIDE

66 solves

last month

misdirection
Rev
Daily AlpacaHack

148 solves

last month

The World
Misc
Daily AlpacaHack

176 solves

last month

RRe_Time_Limiter
Crypto
Daily AlpacaHack

168 solves

last month

Magic Engine
Web
Daily AlpacaHack

245 solves

last month

read-a-binary
Rev
Daily AlpacaHack

209 solves

last month

Inu Profile
Web
Daily AlpacaHack B-SIDE

88 solves

last month

Substance
Crypto
Daily AlpacaHack

228 solves

last month

optimal-sort
Misc
Daily AlpacaHack

98 solves

last month

Linear Coffee Generator
Crypto
Daily AlpacaHack

109 solves

last month

shellcode-101
Pwn
Daily AlpacaHack

123 solves

last month

No JS
Web
Daily AlpacaHack

126 solves

last month

ToyPQC
Crypto
Daily AlpacaHack

103 solves

last month

git gc
Misc
Daily AlpacaHack

144 solves

last month

Stateless Auth
Web
Daily AlpacaHack

161 solves

last month

Paca Paca Authenticator
Crypto
Daily AlpacaHack

120 solves

last month

Bashrunner
Misc
Daily AlpacaHack

116 solves

last month

Animal Viewer
Web
Daily AlpacaHack

148 solves

last month

dockerstack
Misc
Daily AlpacaHack

172 solves

last month

system-v
Rev
Daily AlpacaHack

115 solves

last month

ChaChaCha
Crypto
Daily AlpacaHack

152 solves

last month

dice roll
Web
Daily AlpacaHack

192 solves

last month

Base Length
Misc
Daily AlpacaHack

148 solves

last month

Short Writer
Pwn
Daily AlpacaHack

116 solves

2 months ago

Five Alpacas
Crypto
Daily AlpacaHack

184 solves

2 months ago

free-comment
Misc
Daily AlpacaHack

145 solves

2 months ago

I wanna be the Admin
Web
Daily AlpacaHack

261 solves

2 months ago

Basic Buffer Overflow
Pwn
Daily AlpacaHack

170 solves

2 months ago

crazython
Rev
Daily AlpacaHack

173 solves

2 months ago

RSA2026
Crypto
Daily AlpacaHack

197 solves

2 months ago

SwapSwap
Misc
Daily AlpacaHack

259 solves

2 months ago

secret-table
Web
Daily AlpacaHack

250 solves

2 months ago

Square RSA
Crypto
Daily AlpacaHack

219 solves

2 months ago

jailiaj
Misc
Daily AlpacaHack

260 solves

2 months ago

Encoding Basics
MiscCrypto
Daily AlpacaHack

289 solves

2 months ago

Fushigi Crawler
Web
Daily AlpacaHack

314 solves

2 months ago

Ruby Flag Checker
Rev
Daily AlpacaHack

269 solves

2 months ago

super-tomato
Crypto
Daily AlpacaHack

356 solves

2 months ago

108
Misc
Daily AlpacaHack

272 solves

2 months ago

RBG
Crypto
Daily AlpacaHack

120 solves

2 months ago

one-p-rsa
Crypto
Daily AlpacaHack

214 solves

2 months ago

cha-ll-enge
Rev
Daily AlpacaHack

147 solves

2 months ago

simpleoverwrite
Pwn
Daily AlpacaHack

181 solves

2 months ago

Useful Machine
Rev
Daily AlpacaHack

153 solves

2 months ago

Xmas Login
Web
Daily AlpacaHack

321 solves

2 months ago

cat3
Misc
Daily AlpacaHack

208 solves

2 months ago

Rotten Beef
Pwn
Daily AlpacaHack

192 solves

2 months ago

Log Viewer
Web
Daily AlpacaHack

215 solves

2 months ago

RSA debug?
Crypto
Daily AlpacaHack

181 solves

2 months ago

omikuji
Web
Daily AlpacaHack

234 solves

2 months ago

alloc-101
Pwn
Daily AlpacaHack

207 solves

2 months ago

Twilight
Rev
Daily AlpacaHack

219 solves

2 months ago

login-bonus
Pwn
Daily AlpacaHack

237 solves

3 months ago

🐈
Web
Daily AlpacaHack

291 solves

3 months ago

Flag Printer 2100
Rev
Daily AlpacaHack

233 solves

3 months ago

power_obfus_royalty
Rev
Daily AlpacaHack

195 solves

3 months ago

Safe Prime
Crypto
Daily AlpacaHack

241 solves

3 months ago

Sugoi Flag Checker
Rev
Daily AlpacaHack

195 solves

3 months ago

Alpaca Bank
Web
Daily AlpacaHack

308 solves

3 months ago

Country DB
Web
CakeCTF 2023

220 solves

3 months ago

Read Assembly
Rev
Daily AlpacaHack

298 solves

3 months ago

hit-and-miss
Misc
Daily AlpacaHack

359 solves

3 months ago

GitFile Explorer
Web
zer0pts CTF 2022

47 solves

3 months ago

Pico Note 1
Web
AlpacaHack Round 2 (Web)

80 solves

3 months ago

Fully Padded RSA
Crypto
Daily AlpacaHack

224 solves

3 months ago

size limit
Crypto
Daily AlpacaHack

294 solves

3 months ago

simpleoverflow
Pwn
Daily AlpacaHack

463 solves

3 months ago

Integer Writer
Pwn
Daily AlpacaHack

301 solves

3 months ago

Jackpot
Web
AlpacaHack Round 11 (Web)

159 solves

3 months ago

Leaked Flag Checker
Rev
Daily AlpacaHack

520 solves

3 months ago

minimal-waf
Web
AlpacaHack Round 7 (Web)

25 solves

3 months ago

Emojify
Web
Daily AlpacaHack

541 solves

3 months ago

Alpaca Poll
Web
AlpacaHack Round 7 (Web)

129 solves

3 months ago

a fact of CTF
Crypto
Daily AlpacaHack

804 solves

3 months ago

AlpacaHack 2100
Misc
Daily AlpacaHack

1436 solves

3 months ago

Treasure Hunt
Web
AlpacaHack Round 7 (Web)

266 solves

last year

Welcome
Misc

1502 solves

last year

Simple Login
Web
AlpacaHack Round 2 (Web)

594 solves

last year

echo
Pwn
AlpacaHack Round 1 (Pwn)

348 solves

last year