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@hiikunz

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hiikunz
@hiikun_Z

CTF HISTORY

START DATECTFRANK

2025/07/20

AlpacaHack Round 13 (Crypto)
14 / 62

2025/07/06

AlpacaHack Round 12 (Crypto)
6 / 78

2025/05/17

AlpacaHack Round 11 (Web)
51 / 213

2025/03/01

SECCON CTF 13 決勝観戦CTF
7 / 233

2025/01/26

AlpacaHack Round 9 (Crypto)
20 / 138

2024/11/30

AlpacaHack Round 7 (Web)
73 / 458

2024/10/12

AlpacaHack Round 5 (Crypto)
14 / 247

2024/10/05

AlpacaHack Round 4 (Rev)
30 / 279

2024/09/15

AlpacaHack Round 3 (Crypto)
7 / 239

2024/09/01

AlpacaHack Round 2 (Web)
5 / 300

2024/08/18

AlpacaHack Round 1 (Pwn)
16 / 174

WRITEUPS

WRITEUPCREATED AT
Writeup for minimal-waf with <link rel="prefetch">
ja
minimal-waf

9 months ago

Writeup for AlpacaHack Round 3 (Crypto)
ja
AlpacaHack Round 3 (Crypto)

last year

SOLVED CHALLENGES

CHALLENGESOLVES

SOLVED AT

Jerry's flag checker
Crypto
AlpacaHack Round 13 (Crypto)

24 solves

last month

Flag Sharing
Crypto
AlpacaHack Round 12 (Crypto)

9 solves

2 months ago

OTEC
Crypto
AlpacaHack Round 12 (Crypto)

29 solves

2 months ago

RSARSARSARSARSARSA
Crypto
AlpacaHack Round 12 (Crypto)

55 solves

2 months ago

Jackpot
Web
AlpacaHack Round 11 (Web)

115 solves

4 months ago

Kangaroo
Pwn
AlpacaHack Round 10 (Pwn)

47 solves

5 months ago

Oyster
Pwn
AlpacaHack Round 10 (Pwn)

94 solves

5 months ago

minimal-waf
Web
AlpacaHack Round 7 (Web)

21 solves

9 months ago

str.vs.cstr
Pwn
CakeCTF 2022

20 solves

9 months ago

Alpaca Poll
Web
AlpacaHack Round 7 (Web)

108 solves

9 months ago

Treasure Hunt
Web
AlpacaHack Round 7 (Web)

228 solves

9 months ago

MathHash
Misc
zer0pts CTF 2022

1 solve

9 months ago

Rock Door
Crypto
CakeCTF 2022

9 solves

10 months ago

janken vs yoshiking 2
Crypto
CakeCTF 2023

13 solves

10 months ago

NNNN
Crypto
AlpacaHack Round 5 (Crypto)

40 solves

10 months ago

miniblog++
Web
zer0pts CTF 2022

7 solves

10 months ago

OpenBio
Web
CakeCTF 2022

19 solves

10 months ago

Warmuprofile
Web
zer0pts CTF 2023

21 solves

10 months ago

Elliptic Ring RSA
Crypto
zer0pts CTF 2023

4 solves

10 months ago

Modern Rome
Pwn
zer0pts CTF 2022

18 solves

10 months ago

CurveCrypto
Crypto
zer0pts CTF 2022

6 solves

10 months ago

readme 2022
Misc
CakeCTF 2022

10 solves

10 months ago

SquareRNG
Crypto
zer0pts CTF 2023

12 solves

10 months ago

Anti-Fermat
Crypto
zer0pts CTF 2022

20 solves

10 months ago

easy_factoring
Crypto
zer0pts CTF 2023

21 solves

10 months ago

aush
Pwn
zer0pts CTF 2023

17 solves

10 months ago

TOWFL
WebCheat
CakeCTF 2023

40 solves

10 months ago

decompile me
Rev
zer0pts CTF 2023

37 solves

10 months ago

GitFile Explorer
Web
zer0pts CTF 2022

34 solves

10 months ago

vtable4b
Pwn
CakeCTF 2023

47 solves

10 months ago

nimrev
Rev
CakeCTF 2022

60 solves

10 months ago

CakeGEAR
Web
CakeCTF 2022

66 solves

10 months ago

read-write
Pwn
RTACTF 2023 Spring

32 solves

10 months ago

write
Pwn
RTACTF 2023 Spring

72 solves

10 months ago

before-write
Pwn
RTACTF 2023 Spring

136 solves

10 months ago

catcpy
Pwn
AlpacaHack Round 6 (Pwn)

123 solves

10 months ago

inbound
Pwn
AlpacaHack Round 6 (Pwn)

177 solves

10 months ago

SchnorrLCG
Crypto
AlpacaHack Round 5 (Crypto)

18 solves

11 months ago

XorshiftStream
Crypto
AlpacaHack Round 5 (Crypto)

51 solves

11 months ago

Simple Flag Checker
Rev
AlpacaHack Round 4 (Rev)

105 solves

11 months ago

Hat Trick
Crypto
AlpacaHack Round 3 (Crypto)

55 solves

last year

A Dance of Add and Mul
Crypto
AlpacaHack Round 3 (Crypto)

64 solves

last year

Rainbow Sweet Alchemist
Crypto
AlpacaHack Round 3 (Crypto)

102 solves

last year

qrime
Crypto
AlpacaHack Round 3 (Crypto)

206 solves

last year

brand new crypto
Crypto
CakeCTF 2022

18 solves

last year

simple signature
Crypto
CakeCTF 2023

23 solves

last year

ding-dong-ting-ping
Crypto
CakeCTF 2023

8 solves

last year

CaaS
Web
AlpacaHack Round 2 (Web)

79 solves

last year

Simple Login
Web
AlpacaHack Round 2 (Web)

467 solves

last year

Pico Note 1
Web
AlpacaHack Round 2 (Web)

67 solves

last year

hexecho
Pwn
AlpacaHack Round 1 (Pwn)

101 solves

last year

echo
Pwn
AlpacaHack Round 1 (Pwn)

291 solves

last year

frozen cake
Crypto
CakeCTF 2022

55 solves

last year

Country DB
Web
CakeCTF 2023

188 solves

last year

Reused-AES
Crypto
RTACTF 2023 Spring

27 solves

last year

Collision-DES
Crypto
RTACTF 2023 Spring

31 solves

last year

XOR-CBC
Crypto
RTACTF 2023 Spring

63 solves

last year

Welcome
Misc

1064 solves

last year