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chocorusk

@nuo_chocorusk

AUTHORED CHALLENGES

OPEN DATECHALLENGESOLVES

2025/01/26

RSAMPC
Crypto
31 solves

2025/01/26

addprimes
Crypto
24 solves

2025/01/26

Equivalent Privacy Wired
Crypto
7 solves

2024/10/12

Broadcasting NTRU
Crypto
9 solves

CTF HISTORY

START DATECTFRANK

2025/07/20

AlpacaHack Round 13 (Crypto)
1 / 62

2025/07/06

AlpacaHack Round 12 (Crypto)
2 / 78

2025/01/26

AlpacaHack Round 9 (Crypto)
20 / 138

2024/11/30

AlpacaHack Round 7 (Web)
22 / 458

2024/11/03

AlpacaHack Round 6 (Pwn)
58 / 197

2024/10/12

AlpacaHack Round 5 (Crypto)
32 / 247

2024/10/05

AlpacaHack Round 4 (Rev)
38 / 279

2024/09/15

AlpacaHack Round 3 (Crypto)
3 / 239

2024/09/01

AlpacaHack Round 2 (Web)
58 / 300

WRITEUPS

WRITEUPCREATED AT
Writeup for SECCON CTF 13 Quals
ja
reiwa_rot13

9 months ago

AlpacaHack Round 9 (Crypto) 作問者writeup
ja
official
AlpacaHack Round 9 (Crypto)

10 months ago

Broadcasting NTRU 作問者writeup
ja
official
Broadcasting NTRU

last year

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

last year

SOLVED CHALLENGES

CHALLENGESOLVES

SOLVED AT

Leaked Flag Checker
Rev
Daily AlpacaHack

208 solves

19 hours ago

a fact of CTF
Crypto
Daily AlpacaHack

310 solves

19 hours ago

Emojify
Web
Daily AlpacaHack

229 solves

20 hours ago

AlpacaHack 2100
Misc
Daily AlpacaHack

437 solves

20 hours ago

simpleoverflow
Pwn
Daily AlpacaHack

157 solves

20 hours ago

MissingNo.2
Crypto
AlpacaHack Round 13 (Crypto)

5 solves

4 months ago

MissingNo.1
Crypto
AlpacaHack Round 13 (Crypto)

8 solves

4 months ago

Polynomial Puzzle
Crypto
AlpacaHack Round 13 (Crypto)

3 solves

4 months ago

Jerr0-day
Crypto
AlpacaHack Round 13 (Crypto)

9 solves

4 months ago

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

25 solves

4 months ago

Zero-sum game
Crypto
AlpacaHack Round 12 (Crypto)

3 solves

5 months ago

Flag Sharing
Crypto
AlpacaHack Round 12 (Crypto)

9 solves

5 months ago

OTEC
Crypto
AlpacaHack Round 12 (Crypto)

34 solves

5 months ago

RSARSARSARSARSARSA
Crypto
AlpacaHack Round 12 (Crypto)

65 solves

5 months ago

Trillion Ether
Blockchain
SECCON CTF 13 Quals

5 solves

9 months ago

Tidal wave
Crypto
SECCON CTF 13 Quals

1 solve

9 months ago

dual_summon
Crypto
SECCON CTF 13 Quals

3 solves

9 months ago

reiwa_rot13
Crypto
SECCON CTF 13 Quals

19 solves

9 months ago

addprimes
Crypto
AlpacaHack Round 9 (Crypto)

24 solves

10 months ago

Equivalent Privacy Wired
Crypto
AlpacaHack Round 9 (Crypto)

7 solves

10 months ago

RSAMPC
Crypto
AlpacaHack Round 9 (Crypto)

31 solves

10 months ago

ffmac
Crypto
AlpacaHack Round 9 (Crypto)

8 solves

10 months ago

Alpaca Poll
Web
AlpacaHack Round 7 (Web)

114 solves

last year

Treasure Hunt
Web
AlpacaHack Round 7 (Web)

242 solves

last year

SchnorrLCG
Crypto
AlpacaHack Round 5 (Crypto)

18 solves

last year

NNNN
Crypto
AlpacaHack Round 5 (Crypto)

43 solves

last year

XorshiftStream
Crypto
AlpacaHack Round 5 (Crypto)

55 solves

last year

Broadcasting NTRU
Crypto
AlpacaHack Round 5 (Crypto)

9 solves

last year

Simple Flag Checker
Rev
AlpacaHack Round 4 (Rev)

117 solves

last year

Hat Trick
Crypto
AlpacaHack Round 3 (Crypto)

57 solves

last year

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

68 solves

last year

Rainbow Sweet Alchemist
Crypto
AlpacaHack Round 3 (Crypto)

108 solves

last year

qrime
Crypto
AlpacaHack Round 3 (Crypto)

222 solves

last year

echo
Pwn
AlpacaHack Round 1 (Pwn)

307 solves

last year

Pico Note 1
Web
AlpacaHack Round 2 (Web)

69 solves

last year

CaaS
Web
AlpacaHack Round 2 (Web)

83 solves

last year

Simple Login
Web
AlpacaHack Round 2 (Web)

499 solves

last year

Welcome
Misc

1182 solves

last year