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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)

9 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

last month

Jackpot
Web

96 solves

last month

Kangaroo
Pwn

41 solves

3 months ago

ffmac
Crypto

8 solves

4 months ago

Equivalent Privacy Wired
Crypto

7 solves

4 months ago

RSAMPC
Crypto

27 solves

4 months ago

addprimes
Crypto

24 solves

4 months ago

subway
Rev

12 solves

5 months ago

vcipher
Rev

18 solves

5 months ago

hidden
Rev

55 solves

5 months ago

masking tape
Rev

126 solves

5 months ago

Alpaca Poll
Web

100 solves

6 months ago

Treasure Hunt
Web

206 solves

6 months ago

catcpy
Pwn

111 solves

7 months ago

inbound
Pwn

160 solves

7 months ago

GitFile Explorer
Web

30 solves

7 months ago

Modern Rome
Pwn

17 solves

7 months ago

Anti-Fermat
Crypto

18 solves

7 months ago

NNNN
Crypto

36 solves

8 months ago

SchnorrLCG
Crypto

18 solves

8 months ago

XorshiftStream
Crypto

48 solves

8 months ago

Everything Silver
Rev

16 solves

8 months ago

pytecode
Rev

18 solves

8 months ago

Simple Flag Checker
Rev

100 solves

8 months ago

A Dance of Add and Mul
Crypto

60 solves

9 months ago

Hat Trick
Crypto

53 solves

9 months ago

Rainbow Sweet Alchemist
Crypto

93 solves

9 months ago

qrime
Crypto

189 solves

9 months ago

ding-dong-ting-ping
Crypto

8 solves

9 months ago

janken vs yoshiking 2
Crypto

13 solves

9 months ago

brand new crypto
Crypto

18 solves

9 months ago

luau
Rev

24 solves

9 months ago

CakeGEAR
Web

60 solves

9 months ago

CaaS
Web

72 solves

9 months ago

Pico Note 1
Web

62 solves

9 months ago

Simple Login
Web

420 solves

9 months ago

hexecho
Pwn

94 solves

10 months ago

echo
Pwn

270 solves

10 months ago

Cake Puzzle
Rev

16 solves

10 months ago

mimikyu
Rev

12 solves

10 months ago

read-write
Pwn

29 solves

10 months ago

1R-AES
Crypto

12 solves

10 months ago

Collision-DES
Crypto

30 solves

10 months ago

write
Pwn

65 solves

10 months ago

before-write
Pwn

120 solves

10 months ago

Reused-AES
Crypto

26 solves

10 months ago

XOR-CBC
Crypto

58 solves

10 months ago

Welcome
Misc

969 solves

10 months ago

SquareRNG
Crypto

12 solves

10 months ago

easy_factoring
Crypto

20 solves

10 months ago

TOWFL
CheatWeb

36 solves

10 months ago

decompile me
Rev

36 solves

10 months ago

vtable4b
Pwn

44 solves

10 months ago

nimrev
Rev

57 solves

10 months ago

bofww
Pwn

29 solves

10 months ago

frozen cake
Crypto

51 solves

10 months ago

simple signature
Crypto

22 solves

10 months ago

Country DB
Web

170 solves

10 months ago