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@yu212

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yu212
@Yu_212_MC

AUTHORED CHALLENGES

OPEN DATECHALLENGESOLVES

2025/07/06

Flag Sharing
Crypto
9 solves

2025/07/06

54 solves

2025/07/06

28 solves

2025/07/06

3 solves

CTF HISTORY

START DATECTFRANK

2025/07/20

8 / 62

2025/05/17

13 / 213

2025/03/23

43 / 95

2025/03/01

101 / 233

2025/01/26

20 / 138

2024/12/30

5 / 316

2024/11/30

79 / 458

2024/11/03

46 / 197

2024/10/12

8 / 247

2024/09/15

6 / 239

2024/09/01

18 / 300

2024/08/18

33 / 174

WRITEUPS

WRITEUPCREATED AT
AlpacaHack Round 12 (Crypto) 作問者writeup
ja
official
Flag Sharing

last month

11 months ago

last year

SOLVED CHALLENGES

CHALLENGESOLVES

SOLVED AT

Polynomial Puzzle
AlpacaHack Round 13 (Crypto)

3 solves

last month

AlpacaHack Round 13 (Crypto)

9 solves

last month

AlpacaHack Round 13 (Crypto)

24 solves

last month

AlpacaHack Round 11 (Web)

24 solves

3 months ago

AlpacaHack Round 11 (Web)

114 solves

3 months ago

AlpacaHack Round 10 (Pwn)

45 solves

5 months ago

AlpacaHack Round 9 (Crypto)

8 solves

7 months ago

AlpacaHack Round 9 (Crypto)

7 solves

7 months ago

AlpacaHack Round 9 (Crypto)

28 solves

7 months ago

AlpacaHack Round 9 (Crypto)

24 solves

7 months ago

AlpacaHack Round 8 (Rev)

13 solves

8 months ago

AlpacaHack Round 8 (Rev)

20 solves

8 months ago

AlpacaHack Round 8 (Rev)

58 solves

8 months ago

AlpacaHack Round 8 (Rev)

142 solves

8 months ago

AlpacaHack Round 7 (Web)

108 solves

9 months ago

AlpacaHack Round 7 (Web)

225 solves

9 months ago

AlpacaHack Round 6 (Pwn)

121 solves

10 months ago

AlpacaHack Round 6 (Pwn)

176 solves

10 months ago

zer0pts CTF 2022

34 solves

10 months ago

zer0pts CTF 2022

18 solves

10 months ago

zer0pts CTF 2022

19 solves

10 months ago

AlpacaHack Round 5 (Crypto)

40 solves

10 months ago

AlpacaHack Round 5 (Crypto)

18 solves

10 months ago

AlpacaHack Round 5 (Crypto)

51 solves

10 months ago

AlpacaHack Round 4 (Rev)

18 solves

11 months ago

AlpacaHack Round 4 (Rev)

19 solves

11 months ago

AlpacaHack Round 4 (Rev)

104 solves

11 months ago

AlpacaHack Round 3 (Crypto)

64 solves

11 months ago

AlpacaHack Round 3 (Crypto)

55 solves

11 months ago

AlpacaHack Round 3 (Crypto)

102 solves

11 months ago

AlpacaHack Round 3 (Crypto)

205 solves

11 months ago

CakeCTF 2023

8 solves

11 months ago

CakeCTF 2023

13 solves

11 months ago

CakeCTF 2022

18 solves

11 months ago

CakeCTF 2022

25 solves

11 months ago

CakeCTF 2022

65 solves

11 months ago

AlpacaHack Round 2 (Web)

77 solves

11 months ago

AlpacaHack Round 2 (Web)

66 solves

11 months ago

AlpacaHack Round 2 (Web)

462 solves

last year

AlpacaHack Round 1 (Pwn)

99 solves

last year

AlpacaHack Round 1 (Pwn)

288 solves

last year

CakeCTF 2023

16 solves

last year

zer0pts CTF 2023

12 solves

last year

RTACTF 2023 Spring

32 solves

last year

RTACTF 2023 Spring

12 solves

last year

RTACTF 2023 Spring

30 solves

last year

RTACTF 2023 Spring

70 solves

last year

RTACTF 2023 Spring

133 solves

last year

RTACTF 2023 Spring

26 solves

last year

RTACTF 2023 Spring

63 solves

last year

1049 solves

last year

zer0pts CTF 2023

12 solves

last year

zer0pts CTF 2023

21 solves

last year

CakeCTF 2023

40 solves

last year

zer0pts CTF 2023

37 solves

last year

CakeCTF 2023

46 solves

last year

CakeCTF 2022

59 solves

last year

CakeCTF 2023

29 solves

last year

CakeCTF 2022

55 solves

last year

CakeCTF 2023

23 solves

last year

CakeCTF 2023

188 solves

last year