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CTF HISTORY

START DATECTFRANK

2025/01/26

AlpacaHack Round 9 (Crypto)
20 / 138

2024/11/30

AlpacaHack Round 7 (Web)
40 / 458

2024/11/03

AlpacaHack Round 6 (Pwn)
31 / 197

2024/10/12

AlpacaHack Round 5 (Crypto)
20 / 247

2024/10/05

AlpacaHack Round 4 (Rev)
8 / 279

2024/09/15

AlpacaHack Round 3 (Crypto)
35 / 239

2024/09/01

AlpacaHack Round 2 (Web)
34 / 300

2024/08/18

AlpacaHack Round 1 (Pwn)
38 / 174

WRITEUPS

WRITEUPCREATED AT
Writeup for pyjs
en
pyjs

last month

SOLVED CHALLENGES

CHALLENGESOLVES

SOLVED AT

Erased Secret
Misc
Daily AlpacaHack

65 solves

yesterday

pacapaca sc
Pwn
Daily AlpacaHack

69 solves

2 days ago

AES is dead
Crypto
Daily AlpacaHack

84 solves

3 days ago

Life is probably full of bugs
Crypto
Daily AlpacaHack B-SIDE

25 solves

3 days ago

Panic
Web
Daily AlpacaHack

121 solves

4 days ago

1️⃣
Misc
Daily AlpacaHack

151 solves

5 days ago

No Content
Web
Daily AlpacaHack

148 solves

6 days ago

login-bonus-2
Pwn
Daily AlpacaHack

83 solves

last week

The Horn
Crypto
Daily AlpacaHack

97 solves

last week

Perljail
Misc
Daily AlpacaHack B-SIDE

29 solves

last week

Impossible Puzzle
Web
Daily AlpacaHack

179 solves

last week

You are my friend
Crypto
Daily AlpacaHack

154 solves

last week

Message For You
Web
Daily AlpacaHack

187 solves

last week

Pyrunner
Misc
Daily AlpacaHack B-SIDE

38 solves

last week

silence
Misc
Daily AlpacaHack

99 solves

last week

fsb-202
Pwn
Daily AlpacaHack B-SIDE

40 solves

last week

Tar Uploader
Web
Daily AlpacaHack

101 solves

last week

Dot Chain
Misc
Daily AlpacaHack

84 solves

2 weeks ago

EncodeDecode
Misc
Daily AlpacaHack

85 solves

2 weeks ago

encrypted-p
Crypto
Daily AlpacaHack

100 solves

2 weeks ago

CRC-256
Crypto
Daily AlpacaHack B-SIDE

31 solves

2 weeks ago

Optimized expression
Rev
Daily AlpacaHack

115 solves

2 weeks ago

crypto_666
Crypto
Daily AlpacaHack

105 solves

2 weeks ago

What's Next
Web
Daily AlpacaHack

110 solves

2 weeks ago

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

33 solves

3 weeks ago

bloom
Crypto
Daily AlpacaHack

86 solves

3 weeks ago

vuln4vuln
Pwn
Daily AlpacaHack

96 solves

3 weeks ago

Alpacker
Rev
Daily AlpacaHack

78 solves

3 weeks ago

canary leak
Pwn
Daily AlpacaHack

106 solves

3 weeks ago

Haec Horrenda
Misc
Daily AlpacaHack B-SIDE

29 solves

3 weeks ago

Flags for the FLAG
Misc
Daily AlpacaHack

149 solves

3 weeks ago

PPPPParse
Misc
Daily AlpacaHack

98 solves

3 weeks ago

Free Coupon
Web
Daily AlpacaHack

135 solves

3 weeks ago

UOUO FISH JAIL
Misc
Daily AlpacaHack B-SIDE

37 solves

4 weeks ago

The future path
Crypto
Daily AlpacaHack

92 solves

4 weeks ago

flag.txt
Misc
Daily AlpacaHack

110 solves

4 weeks ago

Heuristic IPPON
Misc
Daily AlpacaHack

167 solves

last month

memset note
Pwn
Daily AlpacaHack B-SIDE

44 solves

last month

Another Login Challenge
Web
Daily AlpacaHack

124 solves

last month

kappa overflow
Pwn
Daily AlpacaHack

121 solves

last month

Find XOR key
Crypto
Daily AlpacaHack

150 solves

last month

💯
Misc
Daily AlpacaHack

116 solves

last month

iwashi
Crypto
Daily AlpacaHack B-SIDE

37 solves

last month

FLAG OVER
Misc
Daily AlpacaHack

115 solves

last month

guess.js
Misc
Daily AlpacaHack

103 solves

last month

high and low
Crypto
Daily AlpacaHack

87 solves

last month

magic number
Misc
Daily AlpacaHack

124 solves

last month

Resume Maker
Web
Daily AlpacaHack B-SIDE

53 solves

last month

Alert my Flag
Web
Daily AlpacaHack

167 solves

last month

Flag Printer 2026
Misc
Daily AlpacaHack

204 solves

last month

glibc's secret function
Rev
Daily AlpacaHack

195 solves

last month

Bars
Web
Daily AlpacaHack

299 solves

last month

9️⃣
Misc
Daily AlpacaHack B-SIDE

48 solves

last month

pyjs
Misc
Daily AlpacaHack

82 solves

last month

Rock Paper Scissors Lizard Spock
Web
Daily AlpacaHack

96 solves

last month

One Byte Padding Oracle Attack
Crypto
Daily AlpacaHack

74 solves

last month

useful-gadget
Pwn
Daily AlpacaHack B-SIDE

46 solves

last month

Alpaca Rangers
Web
Daily AlpacaHack

148 solves

last month

hit-and-hit
Misc
Daily AlpacaHack

87 solves

last month

Alpaca Quest
Rev
Daily AlpacaHack

115 solves

last month

Noob programmer
Pwn
Daily AlpacaHack

105 solves

last month

Stealerusk
Rev
Daily AlpacaHack B-SIDE

45 solves

last month

CopperCopperCopper
Crypto
Daily AlpacaHack

92 solves

last month

Dancing Cursor
RevMisc
Daily AlpacaHack

109 solves

last month

Pickle Loader
Misc
Daily AlpacaHack

117 solves

last month

Disappeared
Pwn
Daily AlpacaHack

115 solves

last month

ECRSA
Crypto
Daily AlpacaHack B-SIDE

46 solves

last month

wages of sin()
RevMisc
Daily AlpacaHack

94 solves

last month

Alpaillier
Crypto
Daily AlpacaHack

117 solves

last month

You are being redirected
Web
Daily AlpacaHack

114 solves

last month

ret2basics
Pwn
Daily AlpacaHack B-SIDE

44 solves

last month

simple ROP
Pwn
Daily AlpacaHack

114 solves

last month

nc magic
Misc
Daily AlpacaHack

133 solves

last month

AAAAAAAAEEEEEEEESSSSSSSS
Crypto
Daily AlpacaHack

121 solves

2 months ago

destructuring
Misc
Daily AlpacaHack

144 solves

2 months ago

Alpaca-Llama Ranch
Pwn
Daily AlpacaHack

125 solves

2 months ago

invisible-grep
Misc
Daily AlpacaHack B-SIDE

40 solves

2 months ago

Plz Login
Web
Daily AlpacaHack

225 solves

2 months ago

Compressor
Misc
Daily AlpacaHack

110 solves

2 months ago

misdirection
Rev
Daily AlpacaHack

161 solves

2 months ago

The World
Misc
Daily AlpacaHack

191 solves

2 months ago

HellCouple
Crypto
Daily AlpacaHack B-SIDE

70 solves

2 months ago

RRe_Time_Limiter
Crypto
Daily AlpacaHack

177 solves

2 months ago

Magic Engine
Web
Daily AlpacaHack

271 solves

2 months ago

read-a-binary
Rev
Daily AlpacaHack

226 solves

2 months ago

Substance
Crypto
Daily AlpacaHack

240 solves

2 months ago

Inu Profile
Web
Daily AlpacaHack B-SIDE

95 solves

2 months ago

optimal-sort
Misc
Daily AlpacaHack

104 solves

2 months ago

Linear Coffee Generator
Crypto
Daily AlpacaHack

115 solves

2 months ago

shellcode-101
Pwn
Daily AlpacaHack

138 solves

2 months ago

No JS
Web
Daily AlpacaHack

132 solves

2 months ago

ToyPQC
Crypto
Daily AlpacaHack

108 solves

2 months ago

git gc
Misc
Daily AlpacaHack

154 solves

2 months ago

Stateless Auth
Web
Daily AlpacaHack

168 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

180 solves

2 months ago

system-v
Rev
Daily AlpacaHack

118 solves

2 months ago

ChaChaCha
Crypto
Daily AlpacaHack

157 solves

2 months ago

dice roll
Web
Daily AlpacaHack

201 solves

2 months ago

Base Length
Misc
Daily AlpacaHack

157 solves

2 months ago

Short Writer
Pwn
Daily AlpacaHack

124 solves

2 months ago

Five Alpacas
Crypto
Daily AlpacaHack

196 solves

2 months ago

free-comment
Misc
Daily AlpacaHack

152 solves

2 months ago

I wanna be the Admin
Web
Daily AlpacaHack

283 solves

3 months ago

Basic Buffer Overflow
Pwn
Daily AlpacaHack

186 solves

3 months ago

crazython
Rev
Daily AlpacaHack

188 solves

3 months ago

RSA2026
Crypto
Daily AlpacaHack

209 solves

3 months ago

SwapSwap
Misc
Daily AlpacaHack

286 solves

3 months ago

secret-table
Web
Daily AlpacaHack

270 solves

3 months ago

Square RSA
Crypto
Daily AlpacaHack

235 solves

3 months ago

jailiaj
Misc
Daily AlpacaHack

282 solves

3 months ago

Encoding Basics
MiscCrypto
Daily AlpacaHack

317 solves

3 months ago

Fushigi Crawler
Web
Daily AlpacaHack

343 solves

3 months ago

Ruby Flag Checker
Rev
Daily AlpacaHack

289 solves

3 months ago

super-tomato
Crypto
Daily AlpacaHack

390 solves

3 months ago

108
Misc
Daily AlpacaHack

296 solves

3 months ago

RBG
Crypto
Daily AlpacaHack

123 solves

3 months ago

one-p-rsa
Crypto
Daily AlpacaHack

231 solves

3 months ago

cha-ll-enge
Rev
SECCON Beginners CTF 2024

158 solves

3 months ago

simpleoverwrite
Pwn
SECCON Beginners CTF 2024

197 solves

3 months ago

Useful Machine
Rev
Daily AlpacaHack

158 solves

3 months ago

Xmas Login
Web
Daily AlpacaHack

354 solves

3 months ago

cat3
Misc
Daily AlpacaHack

221 solves

3 months ago

Rotten Beef
Pwn
Daily AlpacaHack

204 solves

3 months ago

Log Viewer
Web
Daily AlpacaHack

225 solves

3 months ago

RSA debug?
Crypto
Daily AlpacaHack

192 solves

3 months ago

omikuji
Web
Daily AlpacaHack

249 solves

3 months ago

alloc-101
Pwn
Daily AlpacaHack

218 solves

3 months ago

Twilight
Rev
Daily AlpacaHack

230 solves

3 months ago

login-bonus
Pwn
Daily AlpacaHack

255 solves

3 months ago

🐈
Web
Daily AlpacaHack

309 solves

3 months ago

Flag Printer 2100
Rev
Daily AlpacaHack

246 solves

3 months ago

Kangaroo
Pwn
AlpacaHack Round 10 (Pwn)

66 solves

3 months ago

power_obfus_royalty
Rev
Daily AlpacaHack

209 solves

4 months ago

Safe Prime
Crypto
SECCON Beginners CTF 2024

253 solves

4 months ago

Sugoi Flag Checker
Rev
Daily AlpacaHack

204 solves

4 months ago

Alpaca Bank
Web
Daily AlpacaHack

331 solves

4 months ago

Read Assembly
Rev
Daily AlpacaHack

312 solves

4 months ago

hit-and-miss
Misc
Daily AlpacaHack

387 solves

4 months ago

Fully Padded RSA
Crypto
Daily AlpacaHack

237 solves

4 months ago

hidden
Rev
AlpacaHack Round 8 (Rev)

71 solves

4 months ago

size limit
Crypto
Daily AlpacaHack

317 solves

4 months ago

simpleoverflow
Pwn
SECCON Beginners CTF 2024

506 solves

4 months ago

Integer Writer
Pwn
Daily AlpacaHack

325 solves

4 months ago

Leaked Flag Checker
Rev
Daily AlpacaHack

568 solves

4 months ago

Emojify
Web
Daily AlpacaHack

594 solves

4 months ago

RSARSARSARSARSARSA
Crypto
AlpacaHack Round 12 (Crypto)

79 solves

4 months ago

Oyster
Pwn
AlpacaHack Round 10 (Pwn)

129 solves

4 months ago

Jackpot
Web
AlpacaHack Round 11 (Web)

163 solves

4 months ago

masking tape
Rev
AlpacaHack Round 8 (Rev)

173 solves

4 months ago

a fact of CTF
Crypto
Daily AlpacaHack

883 solves

4 months ago

AlpacaHack 2100
Misc
Daily AlpacaHack

1634 solves

4 months ago

addprimes
Crypto
AlpacaHack Round 9 (Crypto)

27 solves

last year

RSAMPC
Crypto
AlpacaHack Round 9 (Crypto)

35 solves

last year

Treasure Hunt
Web
AlpacaHack Round 7 (Web)

271 solves

last year

Alpaca Poll
Web
AlpacaHack Round 7 (Web)

129 solves

last year

wall
Pwn
AlpacaHack Round 6 (Pwn)

59 solves

last year

catcpy
Pwn
AlpacaHack Round 6 (Pwn)

146 solves

last year

inbound
Pwn
AlpacaHack Round 6 (Pwn)

207 solves

last year

SchnorrLCG
Crypto
AlpacaHack Round 5 (Crypto)

23 solves

last year

NNNN
Crypto
AlpacaHack Round 5 (Crypto)

50 solves

last year

XorshiftStream
Crypto
AlpacaHack Round 5 (Crypto)

65 solves

last year

Everything Silver
Rev
AlpacaHack Round 4 (Rev)

26 solves

last year

pytecode
Rev
AlpacaHack Round 4 (Rev)

26 solves

last year

Simple Flag Checker
Rev
AlpacaHack Round 4 (Rev)

127 solves

last year

kiwi
Rev
CakeCTF 2022

9 solves

last year

Gaming VM
Rev
CakeCTF 2023

9 solves

last year

fvm
Rev
zer0pts CTF 2023

8 solves

last year

topology
Rev
zer0pts CTF 2023

6 solves

last year

imgchk
Rev
CakeCTF 2023

8 solves

last year

nande
Rev
CakeCTF 2023

16 solves

last year

mimikyu
Rev
zer0pts CTF 2023

15 solves

last year

luau
Rev
CakeCTF 2022

34 solves

last year

Cake Puzzle
Rev
CakeCTF 2023

20 solves

last year

decompile me
Rev
zer0pts CTF 2023

48 solves

last year

nimrev
Rev
CakeCTF 2022

79 solves

last year

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

74 solves

last year

Hat Trick
Crypto
AlpacaHack Round 3 (Crypto)

66 solves

last year

Rainbow Sweet Alchemist
Crypto
AlpacaHack Round 3 (Crypto)

124 solves

last year

qrime
Crypto
AlpacaHack Round 3 (Crypto)

253 solves

last year

Iron Door
Crypto
CakeCTF 2023

7 solves

last year

Rock Door
Crypto
CakeCTF 2022

10 solves

last year

Elliptic Ring RSA
Crypto
zer0pts CTF 2023

5 solves

last year

decryptyou
PwnCrypto
CakeCTF 2023

5 solves

last year

ding-dong-ting-ping
Crypto
CakeCTF 2023

10 solves

last year

janken vs yoshiking 2
Crypto
CakeCTF 2023

16 solves

last year

SquareRNG
Crypto
zer0pts CTF 2023

15 solves

last year

brand new crypto
Crypto
CakeCTF 2022

25 solves

last year

1R-AES
Crypto
RTACTF 2023 Spring

17 solves

last year

easy_factoring
Crypto
zer0pts CTF 2023

29 solves

last year

simple signature
Crypto
CakeCTF 2023

28 solves

last year

Reused-AES
Crypto
RTACTF 2023 Spring

33 solves

last year

Collision-DES
Crypto
RTACTF 2023 Spring

37 solves

last year

frozen cake
Crypto
CakeCTF 2022

71 solves

last year

XOR-CBC
Crypto
RTACTF 2023 Spring

77 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

Simple Login
Web
AlpacaHack Round 2 (Web)

611 solves

last year

jqi
Web
zer0pts CTF 2023

14 solves

last year

hexecho
Pwn
AlpacaHack Round 1 (Pwn)

114 solves

last year

echo
Pwn
AlpacaHack Round 1 (Pwn)

357 solves

last year

smal arey
Pwn
CakeCTF 2022

18 solves

last year

Memorial Cabbage
Pwn
CakeCTF 2023

21 solves

last year

str.vs.cstr
Pwn
CakeCTF 2022

27 solves

last year

aush
Pwn
zer0pts CTF 2023

22 solves

last year

read-write
Pwn
RTACTF 2023 Spring

41 solves

last year

vtable4b
Pwn
CakeCTF 2023

61 solves

last year

bofww
Pwn
CakeCTF 2023

38 solves

last year

write
Pwn
RTACTF 2023 Spring

85 solves

last year

before-write
Pwn
RTACTF 2023 Spring

162 solves

last year

Warmuprofile
Web
zer0pts CTF 2023

28 solves

last year

TOWFL
WebCheat
CakeCTF 2023

51 solves

last year

CakeGEAR
Web
CakeCTF 2022

81 solves

last year

Country DB
Web
CakeCTF 2023

224 solves

last year

Welcome
Misc

1545 solves

last year