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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

4 months ago

SOLVED CHALLENGES

CHALLENGESOLVES

SOLVED AT

AES is dead
Crypto
Daily AlpacaHack

80 solves

yesterday

Panic
Web
Daily AlpacaHack

119 solves

2 days ago

1️⃣
Misc
Daily AlpacaHack

149 solves

3 days ago

No Content
Web
Daily AlpacaHack

146 solves

4 days ago

login-bonus-2
Pwn
Daily AlpacaHack

82 solves

5 days ago

The Horn
Crypto
Daily AlpacaHack

97 solves

6 days ago

Impossible Puzzle
Web
Daily AlpacaHack

174 solves

last week

You are my friend
Crypto
Daily AlpacaHack

153 solves

last week

Message For You
Web
Daily AlpacaHack

186 solves

last week

silence
Misc
Daily AlpacaHack

99 solves

last week

Tar Uploader
Web
Daily AlpacaHack

99 solves

last week

Dot Chain
Misc
Daily AlpacaHack

84 solves

last week

EncodeDecode
Misc
Daily AlpacaHack

85 solves

2 weeks ago

encrypted-p
Crypto
Daily AlpacaHack

100 solves

2 weeks ago

Optimized expression
Rev
Daily AlpacaHack

115 solves

2 weeks ago

crypto_666
Crypto
Daily AlpacaHack

105 solves

2 weeks ago

What's Next
Web
Daily AlpacaHack

110 solves

2 weeks ago

bloom
Crypto
Daily AlpacaHack

86 solves

2 weeks ago

vuln4vuln
Pwn
Daily AlpacaHack

95 solves

2 weeks ago

Alpacker
Rev
Daily AlpacaHack

78 solves

3 weeks ago

canary leak
Pwn
Daily AlpacaHack

106 solves

3 weeks ago

Flags for the FLAG
Misc
Daily AlpacaHack

148 solves

3 weeks ago

PPPPParse
Misc
Daily AlpacaHack

98 solves

3 weeks ago

Free Coupon
Web
Daily AlpacaHack

135 solves

3 weeks ago

The future path
Crypto
Daily AlpacaHack

92 solves

3 weeks ago

flag.txt
Misc
Daily AlpacaHack

110 solves

3 weeks ago

Heuristic IPPON
Misc
Daily AlpacaHack

167 solves

4 weeks ago

Another Login Challenge
Web
Daily AlpacaHack

123 solves

last month

kappa overflow
Pwn
Daily AlpacaHack

121 solves

last month

Find XOR key
Crypto
Daily AlpacaHack

149 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

high and low
Crypto
Daily AlpacaHack

87 solves

last month

magic number
Misc
Daily AlpacaHack

124 solves

last month

Alert my Flag
Web
Daily AlpacaHack

166 solves

last month

Flag Printer 2026
Misc
Daily AlpacaHack

204 solves

last month

glibc's secret function
Rev
Daily AlpacaHack

194 solves

last month

Bars
Web
Daily AlpacaHack

297 solves

last month

pyjs
Misc
Daily AlpacaHack

82 solves

last month

useful-gadget
Pwn
Daily AlpacaHack B-SIDE

45 solves

last month

Rock Paper Scissors Lizard Spock
Web
Daily AlpacaHack

96 solves

last month

One Byte Padding Oracle Attack
Crypto
Daily AlpacaHack

74 solves

last month

Alpaca Rangers
Web
Daily AlpacaHack

148 solves

last month

hit-and-hit
Misc
Daily AlpacaHack

86 solves

last month

Stealerusk
Rev
Daily AlpacaHack B-SIDE

45 solves

last month

Alpaca Quest
Rev
Daily AlpacaHack

115 solves

last month

Noob programmer
Pwn
Daily AlpacaHack

104 solves

last month

CopperCopperCopper
Crypto
Daily AlpacaHack

92 solves

last month

Dancing Cursor
RevMisc
Daily AlpacaHack

109 solves

last month

Pickle Loader
Misc
Daily AlpacaHack

117 solves

last month

Disappeared
Pwn
Daily AlpacaHack

115 solves

last month

ECRSA
Crypto
Daily AlpacaHack B-SIDE

45 solves

last month

wages of sin()
RevMisc
Daily AlpacaHack

93 solves

last month

ret2basics
Pwn
Daily AlpacaHack B-SIDE

43 solves

last month

Alpaillier
Crypto
Daily AlpacaHack

117 solves

last month

You are being redirected
Web
Daily AlpacaHack

113 solves

last month

simple ROP
Pwn
Daily AlpacaHack

113 solves

last month

nc magic
Misc
Daily AlpacaHack

133 solves

last month

invisible-grep
Misc
Daily AlpacaHack B-SIDE

38 solves

last month

AAAAAAAAEEEEEEEESSSSSSSS
Crypto
Daily AlpacaHack

120 solves

last month

destructuring
Misc
Daily AlpacaHack

143 solves

last month

Alpaca-Llama Ranch
Pwn
Daily AlpacaHack

124 solves

2 months ago

Plz Login
Web
Daily AlpacaHack

224 solves

2 months ago

Compressor
Misc
Daily AlpacaHack

110 solves

2 months ago

HellCouple
Crypto
Daily AlpacaHack B-SIDE

68 solves

2 months ago

misdirection
Rev
Daily AlpacaHack

161 solves

2 months ago

The World
Misc
Daily AlpacaHack

191 solves

2 months ago

RRe_Time_Limiter
Crypto
Daily AlpacaHack

177 solves

2 months ago

Magic Engine
Web
Daily AlpacaHack

271 solves

2 months ago

read-a-binary
Rev
Daily AlpacaHack

225 solves

2 months ago

Inu Profile
Web
Daily AlpacaHack B-SIDE

93 solves

2 months ago

Substance
Crypto
Daily AlpacaHack

240 solves

2 months ago

optimal-sort
Misc
Daily AlpacaHack

104 solves

2 months ago

Linear Coffee Generator
Crypto
Daily AlpacaHack

115 solves

2 months ago

shellcode-101
Pwn
Daily AlpacaHack

138 solves

2 months ago

No JS
Web
Daily AlpacaHack

132 solves

2 months ago

ToyPQC
Crypto
Daily AlpacaHack

108 solves

2 months ago

git gc
Misc
Daily AlpacaHack

154 solves

2 months ago

Stateless Auth
Web
Daily AlpacaHack

168 solves

2 months ago

Paca Paca Authenticator
Crypto
Daily AlpacaHack

127 solves

2 months ago

Bashrunner
Misc
Daily AlpacaHack

120 solves

2 months ago

Animal Viewer
Web
Daily AlpacaHack

154 solves

2 months ago

dockerstack
Misc
Daily AlpacaHack

180 solves

2 months ago

system-v
Rev
Daily AlpacaHack

118 solves

2 months ago

ChaChaCha
Crypto
Daily AlpacaHack

157 solves

2 months ago

dice roll
Web
Daily AlpacaHack

201 solves

2 months ago

Base Length
Misc
Daily AlpacaHack

157 solves

2 months ago

Short Writer
Pwn
Daily AlpacaHack

123 solves

2 months ago

Five Alpacas
Crypto
Daily AlpacaHack

196 solves

2 months ago

free-comment
Misc
Daily AlpacaHack

152 solves

2 months ago

I wanna be the Admin
Web
Daily AlpacaHack

283 solves

2 months ago

Basic Buffer Overflow
Pwn
Daily AlpacaHack

186 solves

3 months ago

crazython
Rev
Daily AlpacaHack

188 solves

3 months ago

RSA2026
Crypto
Daily AlpacaHack

209 solves

3 months ago

SwapSwap
Misc
Daily AlpacaHack

285 solves

3 months ago

secret-table
Web
Daily AlpacaHack

270 solves

3 months ago

Square RSA
Crypto
Daily AlpacaHack

235 solves

3 months ago

jailiaj
Misc
Daily AlpacaHack

281 solves

3 months ago

Encoding Basics
MiscCrypto
Daily AlpacaHack

317 solves

3 months ago

Fushigi Crawler
Web
Daily AlpacaHack

343 solves

3 months ago

Ruby Flag Checker
Rev
Daily AlpacaHack

289 solves

3 months ago

super-tomato
Crypto
Daily AlpacaHack

388 solves

3 months ago

108
Misc
Daily AlpacaHack

296 solves

3 months ago

RBG
Crypto
Daily AlpacaHack

123 solves

3 months ago

one-p-rsa
Crypto
Daily AlpacaHack

231 solves

3 months ago

cha-ll-enge
Rev
SECCON Beginners CTF 2024

158 solves

3 months ago

simpleoverwrite
Pwn
SECCON Beginners CTF 2024

197 solves

3 months ago

Useful Machine
Rev
Daily AlpacaHack

158 solves

3 months ago

Xmas Login
Web
Daily AlpacaHack

353 solves

3 months ago

cat3
Misc
Daily AlpacaHack

221 solves

3 months ago

Rotten Beef
Pwn
Daily AlpacaHack

204 solves

3 months ago

Log Viewer
Web
Daily AlpacaHack

225 solves

3 months ago

RSA debug?
Crypto
Daily AlpacaHack

192 solves

3 months ago

omikuji
Web
Daily AlpacaHack

249 solves

3 months ago

alloc-101
Pwn
Daily AlpacaHack

217 solves

3 months ago

Twilight
Rev
Daily AlpacaHack

230 solves

3 months ago

login-bonus
Pwn
Daily AlpacaHack

255 solves

3 months ago

🐈
Web
Daily AlpacaHack

308 solves

3 months ago

Flag Printer 2100
Rev
Daily AlpacaHack

246 solves

3 months ago

power_obfus_royalty
Rev
Daily AlpacaHack

209 solves

3 months ago

Safe Prime
Crypto
SECCON Beginners CTF 2024

253 solves

4 months ago

Sugoi Flag Checker
Rev
Daily AlpacaHack

204 solves

4 months ago

Alpaca Bank
Web
Daily AlpacaHack

331 solves

4 months ago

Country DB
Web
CakeCTF 2023

223 solves

4 months ago

Read Assembly
Rev
Daily AlpacaHack

312 solves

4 months ago

hit-and-miss
Misc
Daily AlpacaHack

386 solves

4 months ago

GitFile Explorer
Web
zer0pts CTF 2022

48 solves

4 months ago

Pico Note 1
Web
AlpacaHack Round 2 (Web)

81 solves

4 months ago

Fully Padded RSA
Crypto
Daily AlpacaHack

237 solves

4 months ago

size limit
Crypto
Daily AlpacaHack

317 solves

4 months ago

simpleoverflow
Pwn
SECCON Beginners CTF 2024

504 solves

4 months ago

Integer Writer
Pwn
Daily AlpacaHack

324 solves

4 months ago

Jackpot
Web
AlpacaHack Round 11 (Web)

163 solves

4 months ago

Leaked Flag Checker
Rev
Daily AlpacaHack

565 solves

4 months ago

minimal-waf
Web
AlpacaHack Round 7 (Web)

25 solves

4 months ago

Emojify
Web
Daily AlpacaHack

593 solves

4 months ago

Alpaca Poll
Web
AlpacaHack Round 7 (Web)

129 solves

4 months ago

a fact of CTF
Crypto
Daily AlpacaHack

882 solves

4 months ago

AlpacaHack 2100
Misc
Daily AlpacaHack

1627 solves

4 months ago

Treasure Hunt
Web
AlpacaHack Round 7 (Web)

271 solves

last year

Welcome
Misc

1542 solves

last year

Simple Login
Web
AlpacaHack Round 2 (Web)

610 solves

last year

echo
Pwn
AlpacaHack Round 1 (Pwn)

357 solves

last year