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rsk0315

@rsk0315_h4x

AUTHORED CHALLENGES

OPEN DATECHALLENGESOLVES

2026/03/25

CRC-256
Crypto
30 solves

2026/03/18

Haec Horrenda
Misc
28 solves

2026/03/18

Flags for the FLAG
Misc
146 solves

2026/02/19

Dancing Cursor
RevMisc
108 solves

2026/02/16

wages of sin()
RevMisc
91 solves

CTF HISTORY

START DATECTFRANK

2025/01/26

AlpacaHack Round 9 (Crypto)
20 / 138

2024/12/30

AlpacaHack Round 8 (Rev)
12 / 316

2024/11/30

AlpacaHack Round 7 (Web)
8 / 458

WRITEUPS

WRITEUPCREATED AT
Writeup for EncodeDecode
ja
EncodeDecode

last week

Writeup for Haec Horrenda
ja
Haec Horrenda

2 weeks ago

Writeup for Flags for the FLAG
ja
Flags for the FLAG

2 weeks ago

Writeup for pyjs
ja
pyjs

last month

Writeup for hit-and-hit
ja
hit-and-hit

last month

Writeup for Dancing Cursor
ja
Dancing Cursor

last month

Writeup for wages of sin()
ja
wages of sin()

last month

Writeup for simple ROP
ja
simple ROP

last month

Writeup for shellcode-101
ja
shellcode-101

last month

Writeup for invisible-grep
ja
invisible-grep

last month

Writeup for destructuring
ja
destructuring

last month

Writeup for jailiaj
ja
jailiaj

3 months ago

Writeup for AlpacaHack Round 8 (Rev)
ja
AlpacaHack Round 8 (Rev)

last year

Writeup for AlpacaHack Round 7 (Web)
ja
AlpacaHack Round 7 (Web)

last year

SOLVED CHALLENGES

CHALLENGESOLVES

SOLVED AT

No Content
Web
Daily AlpacaHack

109 solves

yesterday

login-bonus-2
Pwn
Daily AlpacaHack

68 solves

2 days ago

Perljail
Misc
Daily AlpacaHack B-SIDE

28 solves

3 days ago

The Horn
Crypto
Daily AlpacaHack

89 solves

3 days ago

Impossible Puzzle
Web
Daily AlpacaHack

150 solves

4 days ago

You are my friend
Crypto
Daily AlpacaHack

141 solves

5 days ago

Message For You
Web
Daily AlpacaHack

167 solves

6 days ago

Pyrunner
Misc
Daily AlpacaHack B-SIDE

36 solves

6 days ago

fsb-202
Pwn
Daily AlpacaHack B-SIDE

37 solves

last week

silence
Misc
Daily AlpacaHack

97 solves

last week

Tar Uploader
Web
Daily AlpacaHack

96 solves

last week

Dot Chain
Misc
Daily AlpacaHack

82 solves

last week

EncodeDecode
Misc
Daily AlpacaHack

84 solves

last week

encrypted-p
Crypto
Daily AlpacaHack

99 solves

last week

CRC-256
Crypto
Daily AlpacaHack B-SIDE

30 solves

last week

Optimized expression
Rev
Daily AlpacaHack

113 solves

last week

crypto_666
Crypto
Daily AlpacaHack

103 solves

2 weeks ago

What's Next
Web
Daily AlpacaHack

108 solves

2 weeks ago

The past or the future?
Crypto
Daily AlpacaHack B-SIDE

32 solves

2 weeks ago

bloom
Crypto
Daily AlpacaHack

85 solves

2 weeks ago

vuln4vuln
Pwn
Daily AlpacaHack

94 solves

2 weeks ago

Alpacker
Rev
Daily AlpacaHack

77 solves

2 weeks ago

canary leak
Pwn
Daily AlpacaHack

105 solves

2 weeks ago

Haec Horrenda
Misc
Daily AlpacaHack B-SIDE

28 solves

2 weeks ago

Flags for the FLAG
Misc
Daily AlpacaHack

146 solves

2 weeks ago

PPPPParse
Misc
Daily AlpacaHack

98 solves

3 weeks ago

Free Coupon
Web
Daily AlpacaHack

134 solves

3 weeks ago

UOUO FISH JAIL
Misc
Daily AlpacaHack B-SIDE

36 solves

3 weeks ago

The future path
Crypto
Daily AlpacaHack

92 solves

3 weeks ago

flag.txt
Misc
Daily AlpacaHack

110 solves

3 weeks ago

README.pdf
Rev
tkbctf5

146 solves

3 weeks ago

Heuristic IPPON
Misc
Daily AlpacaHack

165 solves

3 weeks ago

memset note
Pwn
Daily AlpacaHack B-SIDE

41 solves

3 weeks ago

Another Login Challenge
Web
Daily AlpacaHack

122 solves

3 weeks ago

kappa overflow
Pwn
Daily AlpacaHack

119 solves

3 weeks ago

Find XOR key
Crypto
Daily AlpacaHack

144 solves

4 weeks ago

💯
Misc
Daily AlpacaHack

114 solves

4 weeks ago

iwashi
Crypto
Daily AlpacaHack B-SIDE

37 solves

last month

FLAG OVER
Misc
Daily AlpacaHack

112 solves

last month

guess.js
Misc
Daily AlpacaHack

102 solves

last month

high and low
Crypto
Daily AlpacaHack

86 solves

last month

magic number
Misc
Daily AlpacaHack

121 solves

last month

Resume Maker
Web
Daily AlpacaHack B-SIDE

52 solves

last month

Alert my Flag
Web
Daily AlpacaHack

163 solves

last month

Flag Printer 2026
Misc
Daily AlpacaHack

201 solves

last month

glibc's secret function
Rev
Daily AlpacaHack

192 solves

last month

Bars
Web
Daily AlpacaHack

293 solves

last month

9️⃣
Misc
Daily AlpacaHack B-SIDE

47 solves

last month

pyjs
Misc
Daily AlpacaHack

82 solves

last month

Rock Paper Scissors Lizard Spock
Web
Daily AlpacaHack

95 solves

last month

useful-gadget
Pwn
Daily AlpacaHack B-SIDE

45 solves

last month

One Byte Padding Oracle Attack
Crypto
Daily AlpacaHack

74 solves

last month

Alpaca Rangers
Web
Daily AlpacaHack

146 solves

last month

hit-and-hit
Misc
Daily AlpacaHack

85 solves

last month

Alpaca Quest
Rev
Daily AlpacaHack

113 solves

last month

Noob programmer
Pwn
Daily AlpacaHack

103 solves

last month

Stealerusk
Rev
Daily AlpacaHack B-SIDE

43 solves

last month

CopperCopperCopper
Crypto
Daily AlpacaHack

92 solves

last month

Dancing Cursor
RevMisc
Daily AlpacaHack

108 solves

last month

Pickle Loader
Misc
Daily AlpacaHack

116 solves

last month

ECRSA
Crypto
Daily AlpacaHack B-SIDE

45 solves

last month

Disappeared
Pwn
Daily AlpacaHack

115 solves

last month

wages of sin()
RevMisc
Daily AlpacaHack

91 solves

last month

Alpaillier
Crypto
Daily AlpacaHack

117 solves

last month

You are being redirected
Web
Daily AlpacaHack

113 solves

last month

ret2basics
Pwn
Daily AlpacaHack B-SIDE

42 solves

last month

simple ROP
Pwn
Daily AlpacaHack

112 solves

last month

nc magic
Misc
Daily AlpacaHack

132 solves

last month

AAAAAAAAEEEEEEEESSSSSSSS
Crypto
Daily AlpacaHack

119 solves

last month

destructuring
Misc
Daily AlpacaHack

142 solves

last month

invisible-grep
Misc
Daily AlpacaHack B-SIDE

37 solves

last month

Alpaca-Llama Ranch
Pwn
Daily AlpacaHack

123 solves

last month

Plz Login
Web
Daily AlpacaHack

223 solves

last month

Compressor
Misc
Daily AlpacaHack

109 solves

last month

misdirection
Rev
Daily AlpacaHack

158 solves

2 months ago

The World
Misc
Daily AlpacaHack

189 solves

2 months ago

HellCouple
Crypto
Daily AlpacaHack B-SIDE

68 solves

2 months ago

RRe_Time_Limiter
Crypto
Daily AlpacaHack

175 solves

2 months ago

Magic Engine
Web
Daily AlpacaHack

268 solves

2 months ago

read-a-binary
Rev
Daily AlpacaHack

221 solves

2 months ago

Substance
Crypto
Daily AlpacaHack

237 solves

2 months ago

Inu Profile
Web
Daily AlpacaHack B-SIDE

93 solves

2 months ago

optimal-sort
Misc
Daily AlpacaHack

104 solves

2 months ago

Linear Coffee Generator
Crypto
Daily AlpacaHack

114 solves

2 months ago

shellcode-101
Pwn
Daily AlpacaHack

135 solves

2 months ago

No JS
Web
Daily AlpacaHack

131 solves

2 months ago

ToyPQC
Crypto
Daily AlpacaHack

107 solves

2 months ago

git gc
Misc
Daily AlpacaHack

153 solves

2 months ago

Stateless Auth
Web
Daily AlpacaHack

167 solves

2 months ago

Paca Paca Authenticator
Crypto
Daily AlpacaHack

127 solves

2 months ago

Bashrunner
Misc
Daily AlpacaHack

120 solves

2 months ago

Animal Viewer
Web
Daily AlpacaHack

154 solves

2 months ago

dockerstack
Misc
Daily AlpacaHack

179 solves

2 months ago

system-v
Rev
Daily AlpacaHack

118 solves

2 months ago

ChaChaCha
Crypto
Daily AlpacaHack

157 solves

2 months ago

decompile me
Rev
zer0pts CTF 2023

48 solves

2 months ago

dice roll
Web
Daily AlpacaHack

201 solves

2 months ago

Base Length
Misc
Daily AlpacaHack

156 solves

2 months ago

Short Writer
Pwn
Daily AlpacaHack

123 solves

2 months ago

Five Alpacas
Crypto
Daily AlpacaHack

196 solves

2 months ago

free-comment
Misc
Daily AlpacaHack

151 solves

2 months ago

Hat Trick
Crypto
AlpacaHack Round 3 (Crypto)

66 solves

2 months ago

I wanna be the Admin
Web
Daily AlpacaHack

283 solves

2 months ago

Basic Buffer Overflow
Pwn
Daily AlpacaHack

185 solves

2 months ago

crazython
Rev
Daily AlpacaHack

185 solves

2 months ago

RSA2026
Crypto
Daily AlpacaHack

207 solves

2 months ago

SwapSwap
Misc
Daily AlpacaHack

282 solves

2 months ago

secret-table
Web
Daily AlpacaHack

268 solves

3 months ago

Square RSA
Crypto
Daily AlpacaHack

234 solves

3 months ago

jailiaj
Misc
Daily AlpacaHack

279 solves

3 months ago

Encoding Basics
MiscCrypto
Daily AlpacaHack

315 solves

3 months ago

welkerme
Pwn
CakeCTF 2022

26 solves

3 months ago

Fushigi Crawler
Web
Daily AlpacaHack

341 solves

3 months ago

Ruby Flag Checker
Rev
Daily AlpacaHack

287 solves

3 months ago

super-tomato
Crypto
Daily AlpacaHack

386 solves

3 months ago

108
Misc
Daily AlpacaHack

293 solves

3 months ago

RBG
Crypto
Daily AlpacaHack

122 solves

3 months ago

one-p-rsa
Crypto
Daily AlpacaHack

230 solves

3 months ago

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

33 solves

3 months ago

jqi
Web
zer0pts CTF 2023

14 solves

3 months ago

cha-ll-enge
Rev
SECCON Beginners CTF 2024

158 solves

3 months ago

Collision-DES
Crypto
RTACTF 2023 Spring

37 solves

3 months ago

pytecode
Rev
AlpacaHack Round 4 (Rev)

26 solves

3 months ago

simpleoverwrite
Pwn
SECCON Beginners CTF 2024

196 solves

3 months ago

Useful Machine
Rev
Daily AlpacaHack

157 solves

3 months ago

Xmas Login
Web
Daily AlpacaHack

350 solves

3 months ago

cat3
Misc
Daily AlpacaHack

220 solves

3 months ago

Rotten Beef
Pwn
Daily AlpacaHack

204 solves

3 months ago

Log Viewer
Web
Daily AlpacaHack

224 solves

3 months ago

Jackpot
Web
AlpacaHack Round 11 (Web)

162 solves

3 months ago

TOWFL
WebCheat
CakeCTF 2023

51 solves

3 months ago

RSA debug?
Crypto
Daily AlpacaHack

192 solves

3 months ago

omikuji
Web
Daily AlpacaHack

248 solves

3 months ago

alloc-101
Pwn
Daily AlpacaHack

217 solves

3 months ago

Twilight
Rev
Daily AlpacaHack

229 solves

3 months ago

login-bonus
Pwn
Daily AlpacaHack

253 solves

3 months ago

🐈
Web
Daily AlpacaHack

307 solves

3 months ago

Flag Printer 2100
Rev
Daily AlpacaHack

244 solves

3 months ago

luau
Rev
CakeCTF 2022

34 solves

3 months ago

nimrev
Rev
CakeCTF 2022

79 solves

3 months ago

fvm
Rev
zer0pts CTF 2023

8 solves

3 months ago

power_obfus_royalty
Rev
Daily AlpacaHack

207 solves

3 months ago

Safe Prime
Crypto
SECCON Beginners CTF 2024

252 solves

3 months ago

Sugoi Flag Checker
Rev
Daily AlpacaHack

202 solves

3 months ago

Alpaca Bank
Web
Daily AlpacaHack

330 solves

3 months ago

Read Assembly
Rev
Daily AlpacaHack

308 solves

3 months ago

hit-and-miss
Misc
Daily AlpacaHack

382 solves

4 months ago

Fully Padded RSA
Crypto
Daily AlpacaHack

235 solves

4 months ago

size limit
Crypto
Daily AlpacaHack

314 solves

4 months ago

simpleoverflow
Pwn
SECCON Beginners CTF 2024

502 solves

4 months ago

Integer Writer
Pwn
Daily AlpacaHack

323 solves

4 months ago

Leaked Flag Checker
Rev
Daily AlpacaHack

562 solves

4 months ago

Emojify
Web
Daily AlpacaHack

588 solves

4 months ago

a fact of CTF
Crypto
Daily AlpacaHack

876 solves

4 months ago

AlpacaHack 2100
Misc
Daily AlpacaHack

1613 solves

4 months ago

BrainJIT
Pwn
zer0pts CTF 2023

7 solves

5 months ago

accountant
Pwn
zer0pts CTF 2022

7 solves

5 months ago

XorshiftStream
Crypto
AlpacaHack Round 5 (Crypto)

65 solves

5 months ago

frozen cake
Crypto
CakeCTF 2022

71 solves

5 months ago

RSARSARSARSARSARSA
Crypto
AlpacaHack Round 12 (Crypto)

79 solves

5 months ago

XOR-CBC
Crypto
RTACTF 2023 Spring

77 solves

5 months ago

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

74 solves

5 months ago

Rainbow Sweet Alchemist
Crypto
AlpacaHack Round 3 (Crypto)

124 solves

5 months ago

wall
Pwn
AlpacaHack Round 6 (Pwn)

59 solves

5 months ago

str.vs.cstr
Pwn
CakeCTF 2022

27 solves

5 months ago

Takahashi
Pwn
AlpacaHack Round 10 (Pwn)

28 solves

5 months ago

decryptyou
PwnCrypto
CakeCTF 2023

5 solves

5 months ago

bofwow
Pwn
CakeCTF 2023

15 solves

5 months ago

bofww
Pwn
CakeCTF 2023

38 solves

5 months ago

kvstore
Pwn
zer0pts CTF 2022

2 solves

5 months ago

deck
Pwn
AlpacaHack Round 1 (Pwn)

43 solves

6 months ago

smal arey
Pwn
CakeCTF 2022

18 solves

6 months ago

Kangaroo
Pwn
AlpacaHack Round 10 (Pwn)

66 solves

9 months ago

Modern Rome
Pwn
zer0pts CTF 2022

24 solves

9 months ago

aush
Pwn
zer0pts CTF 2023

22 solves

9 months ago

Oyster
Pwn
AlpacaHack Round 10 (Pwn)

128 solves

9 months ago

only-read
Pwn
RTACTF 2023 Spring

22 solves

last year

read-write
Pwn
RTACTF 2023 Spring

41 solves

last year

write
Pwn
RTACTF 2023 Spring

85 solves

last year

vcipher
Rev
AlpacaHack Round 8 (Rev)

29 solves

last year

hidden
Rev
AlpacaHack Round 8 (Rev)

71 solves

last year

masking tape
Rev
AlpacaHack Round 8 (Rev)

173 solves

last year

hexecho
Pwn
AlpacaHack Round 1 (Pwn)

114 solves

last year

CakeGEAR
Web
CakeCTF 2022

81 solves

last year

Pico Note 1
Web
AlpacaHack Round 2 (Web)

81 solves

last year

CaaS
Web
AlpacaHack Round 2 (Web)

93 solves

last year

Alpaca Poll
Web
AlpacaHack Round 7 (Web)

129 solves

last year

Treasure Hunt
Web
AlpacaHack Round 7 (Web)

270 solves

last year

Country DB
Web
CakeCTF 2023

222 solves

last year

catcpy
Pwn
AlpacaHack Round 6 (Pwn)

146 solves

last year

before-write
Pwn
RTACTF 2023 Spring

162 solves

last year

inbound
Pwn
AlpacaHack Round 6 (Pwn)

207 solves

last year

echo
Pwn
AlpacaHack Round 1 (Pwn)

357 solves

last year

Simple Flag Checker
Rev
AlpacaHack Round 4 (Rev)

127 solves

last year

GitFile Explorer
Web
zer0pts CTF 2022

48 solves

last year

vtable4b
Pwn
CakeCTF 2023

61 solves

last year

qrime
Crypto
AlpacaHack Round 3 (Crypto)

253 solves

last year

Simple Login
Web
AlpacaHack Round 2 (Web)

609 solves

last year

Welcome
Misc

1540 solves

last year