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@yu212

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yu212
@Yu_212_MC

AUTHORED CHALLENGES

OPEN DATECHALLENGESOLVES

2025/07/06

RSARSARSARSARSARSA
Crypto
52 solves

2025/07/06

8 solves

2025/07/06

27 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
RSARSARSARSARSARSA

last month

11 months ago

last year

SOLVED CHALLENGES

CHALLENGESOLVES

SOLVED AT

Polynomial Puzzle
AlpacaHack Round 13 (Crypto)

3 solves

2 weeks ago

AlpacaHack Round 13 (Crypto)

9 solves

3 weeks ago

AlpacaHack Round 13 (Crypto)

24 solves

3 weeks ago

AlpacaHack Round 11 (Web)

23 solves

2 months ago

AlpacaHack Round 11 (Web)

109 solves

2 months ago

AlpacaHack Round 10 (Pwn)

45 solves

4 months ago

AlpacaHack Round 9 (Crypto)

8 solves

6 months ago

AlpacaHack Round 9 (Crypto)

7 solves

6 months ago

AlpacaHack Round 9 (Crypto)

28 solves

6 months ago

AlpacaHack Round 9 (Crypto)

24 solves

6 months ago

AlpacaHack Round 8 (Rev)

13 solves

7 months ago

AlpacaHack Round 8 (Rev)

20 solves

7 months ago

AlpacaHack Round 8 (Rev)

58 solves

7 months ago

AlpacaHack Round 8 (Rev)

139 solves

7 months ago

AlpacaHack Round 7 (Web)

106 solves

8 months ago

AlpacaHack Round 7 (Web)

222 solves

8 months ago

AlpacaHack Round 6 (Pwn)

118 solves

9 months ago

AlpacaHack Round 6 (Pwn)

172 solves

9 months ago

zer0pts CTF 2022

32 solves

9 months ago

zer0pts CTF 2022

18 solves

9 months ago

zer0pts CTF 2022

19 solves

9 months ago

AlpacaHack Round 5 (Crypto)

38 solves

10 months ago

AlpacaHack Round 5 (Crypto)

18 solves

10 months ago

AlpacaHack Round 5 (Crypto)

50 solves

10 months ago

AlpacaHack Round 4 (Rev)

18 solves

10 months ago

AlpacaHack Round 4 (Rev)

19 solves

10 months ago

AlpacaHack Round 4 (Rev)

101 solves

10 months ago

AlpacaHack Round 3 (Crypto)

64 solves

11 months ago

AlpacaHack Round 3 (Crypto)

55 solves

11 months ago

AlpacaHack Round 3 (Crypto)

100 solves

11 months ago

AlpacaHack Round 3 (Crypto)

201 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

24 solves

11 months ago

CakeCTF 2022

64 solves

11 months ago

AlpacaHack Round 2 (Web)

76 solves

11 months ago

AlpacaHack Round 2 (Web)

66 solves

11 months ago

AlpacaHack Round 2 (Web)

454 solves

11 months ago

AlpacaHack Round 1 (Pwn)

98 solves

12 months ago

AlpacaHack Round 1 (Pwn)

283 solves

12 months ago

CakeCTF 2023

16 solves

12 months ago

zer0pts CTF 2023

12 solves

12 months ago

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

130 solves

last year

RTACTF 2023 Spring

26 solves

last year

RTACTF 2023 Spring

62 solves

last year

1030 solves

last year

zer0pts CTF 2023

12 solves

last year

zer0pts CTF 2023

21 solves

last year

CakeCTF 2023

39 solves

last year

zer0pts CTF 2023

36 solves

last year

CakeCTF 2023

46 solves

last year

CakeCTF 2022

58 solves

last year

CakeCTF 2023

29 solves

last year

CakeCTF 2022

54 solves

last year

CakeCTF 2023

22 solves

last year

CakeCTF 2023

184 solves

last year