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yu212
@Yu_212_MC

CTF HISTORY

START DATECTFRANK

2025/05/17

AlpacaHack Round 11 (Web)
13 / 213

2025/03/23

AlpacaHack Round 10 (Pwn)
43 / 95

2025/03/01

SECCON CTF 13 決勝観戦CTF
101 / 233

2025/01/26

AlpacaHack Round 9 (Crypto)
20 / 138

2024/12/30

AlpacaHack Round 8 (Rev)
5 / 316

2024/11/30

AlpacaHack Round 7 (Web)
79 / 458

2024/11/03

AlpacaHack Round 6 (Pwn)
46 / 197

2024/10/12

AlpacaHack Round 5 (Crypto)
8 / 247

2024/09/15

AlpacaHack Round 3 (Crypto)
6 / 239

2024/09/01

AlpacaHack Round 2 (Web)
18 / 300

2024/08/18

AlpacaHack Round 1 (Pwn)
33 / 174

WRITEUPS

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

8 months ago

frozen cake 初心者向け解説
ja
frozen cake

10 months ago

SOLVED CHALLENGES

CHALLENGESOLVES

SOLVED AT

Redirector
Web

18 solves

2 weeks ago

Jackpot
Web

96 solves

2 weeks ago

Kangaroo
Pwn

38 solves

2 months ago

ffmac
Crypto

8 solves

4 months ago

Equivalent Privacy Wired
Crypto

7 solves

4 months ago

RSAMPC
Crypto

26 solves

4 months ago

addprimes
Crypto

23 solves

4 months ago

subway
Rev

12 solves

5 months ago

vcipher
Rev

18 solves

5 months ago

hidden
Rev

53 solves

5 months ago

masking tape
Rev

125 solves

5 months ago

Alpaca Poll
Web

98 solves

6 months ago

Treasure Hunt
Web

201 solves

6 months ago

catcpy
Pwn

110 solves

7 months ago

inbound
Pwn

155 solves

7 months ago

GitFile Explorer
Web

30 solves

7 months ago

Modern Rome
Pwn

15 solves

7 months ago

Anti-Fermat
Crypto

17 solves

7 months ago

NNNN
Crypto

36 solves

7 months ago

SchnorrLCG
Crypto

18 solves

7 months ago

XorshiftStream
Crypto

48 solves

7 months ago

Everything Silver
Rev

16 solves

7 months ago

pytecode
Rev

18 solves

7 months ago

Simple Flag Checker
Rev

99 solves

7 months ago

A Dance of Add and Mul
Crypto

60 solves

8 months ago

Hat Trick
Crypto

53 solves

8 months ago

Rainbow Sweet Alchemist
Crypto

91 solves

8 months ago

qrime
Crypto

187 solves

8 months ago

ding-dong-ting-ping
Crypto

8 solves

8 months ago

janken vs yoshiking 2
Crypto

13 solves

8 months ago

brand new crypto
Crypto

18 solves

8 months ago

luau
Rev

24 solves

8 months ago

CakeGEAR
Web

58 solves

8 months ago

CaaS
Web

68 solves

8 months ago

Pico Note 1
Web

60 solves

8 months ago

Simple Login
Web

407 solves

9 months ago

hexecho
Pwn

92 solves

9 months ago

echo
Pwn

264 solves

9 months ago

Cake Puzzle
Rev

16 solves

9 months ago

mimikyu
Rev

12 solves

9 months ago

read-write
Pwn

28 solves

9 months ago

1R-AES
Crypto

12 solves

9 months ago

Collision-DES
Crypto

29 solves

9 months ago

write
Pwn

64 solves

9 months ago

before-write
Pwn

117 solves

9 months ago

Reused-AES
Crypto

26 solves

9 months ago

XOR-CBC
Crypto

58 solves

9 months ago

Welcome
Misc

946 solves

9 months ago

SquareRNG
Crypto

12 solves

9 months ago

easy_factoring
Crypto

20 solves

9 months ago

TOWFL
CheatWeb

36 solves

9 months ago

decompile me
Rev

36 solves

9 months ago

vtable4b
Pwn

43 solves

9 months ago

nimrev
Rev

57 solves

9 months ago

bofww
Pwn

28 solves

9 months ago

frozen cake
Crypto

51 solves

10 months ago

simple signature
Crypto

22 solves

10 months ago

Country DB
Web

165 solves

10 months ago