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20์ฝ”์ธ
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web
Dreamhack
20์ฝ”์ธ
.so what?
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reversing
Dreamhack
20์ฝ”์ธ
Smol PRNG
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crypto
Dreamhack
20์ฝ”์ธ

๋žญํ‚น

218 ๋ช…์ด ์ฐธ์—ฌ ์ค‘์ž…๋‹ˆ๋‹ค.
Last updated: 2025.10.28. 21:14:18
์ˆœ์œ„ ์ ์ˆ˜ ์‚ฌ์šฉ์ž
1์œ„ 3348 pts
G0RiyA
CTF ์ดˆ๋ณด์ž
2์œ„ 3348 pts
avatar
keymoon
2024 Invitational CHAMPION
3์œ„ 3348 pts
avatar
ks
2024 Invitational 2nd Place
4์œ„ 3348 pts
avatar
zatsu
๋Œ€ํ‘œ ์—…์  ์—†์Œ
5์œ„ 2532 pts
avatar
Yu_212
์•”ํ˜ธํ•™ ๊ณ ์ธ๋ฌผ
6์œ„ 2466 pts
avatar
zundamon
2024 Invitational Winners
7์œ„ 2382 pts
wlswotmd
2024 Invitational Winners
8์œ„ 2382 pts
avatar
deayzl
์ƒˆ์‹น
9์œ„ 2382 pts
xrekkusu
2024 Invitational Contenders
10์œ„ 1650 pts
shpark1104
Perfect 10
11์œ„ 1566 pts
avatar
๊ตฐ์ธ๊น€๋„ํ˜„
Crazy 8
12์œ„ 1500 pts
avatar
Sechack
2024 Invitational Contenders
13์œ„ 1500 pts
avatar
p0-tato
๋ฆฌ์•ก์…˜๋ถ€์ž
14์œ„ 966 pts
boo______
ํ”„๋ ˆ์‹œ๋งจ
15์œ„ 882 pts
xavi
๋Œ€ํ‘œ ์—…์  ์—†์Œ

๊ณต์ง€์‚ฌํ•ญ 1

๊ณต์ง€์‚ฌํ•ญ NEW
2024.07.06. 17:48:35

ํ˜„์žฌ ๋ฌธ์ œ ์ ์ˆ˜ ์„ค์ •์— ์ด์ƒ์ด ์žˆ์–ด ์ˆ˜์ • ์ค‘์ž…๋‹ˆ๋‹ค. ์ด์ „๊ณผ ๊ฐ™์ด 1000์ ์—์„œ ์‹œ์ž‘ํ•˜๋Š” ๋‹ค์ด๋‚˜๋ฏน ์Šค์ฝ”์–ด๋ง์œผ๋กœ ์กฐ์ •๋ฉ๋‹ˆ๋‹ค.

๊ฒฐ๊ณผ

์‚ฌ์šฉ์ž
LP
๋ณ€๋™๋œ ํ‹ฐ์–ด
G0RiyA
1629
Gold II
avatar
keymoon
1623
Gold II
avatar
ks
1616
Gold II
avatar
zatsu
1609
Gold II
avatar
Yu_212
1603
Gold II
avatar
zundamon
1596
Gold III
wlswotmd
1590
Gold III
avatar
deayzl
1583
Gold III
xrekkusu
1577
Gold III
shpark1104
1571
Gold III
avatar
๊ตฐ์ธ๊น€๋„ํ˜„
1566
Gold III
avatar
Sechack
1560
Gold III
avatar
p0-tato
1555
Gold III
boo______
1549
Gold III
xavi
1544
Gold III
avatar
logiciris
1539
Gold III
avatar
ngductung
1534
Gold III
avatar
mingw
1530
Gold III
avatar
One_
1525
Gold III
secu23
1521
Gold III
avatar
sugi
1516
Gold III
avatar
์™”๋‹ค..
1512
Gold III
avatar
OJingA
1508
Gold III
avatar
RTV
1504
Gold III
avatar
Venus
1500
Gold III
avatar
ssongk
1496
Silver I
avatar
J0ngBae
1492
Silver I
K0n9
1488
Silver I
avatar
์ด๋ผ๋ˆ„
1484
Silver I
ํƒˆํ‡ดํ•œ ์ด์šฉ์ž
1481
Silver I
Season 6
Dreamhack CTF Season 6 Round #1 (๐ŸšฉDiv1)
์ผ์‹œ
2024.07.06. 09:00:00
~ 2024.07.06. 23:59:59
217
๋ช… ์ฐธ์—ฌํ•จ
CTF ๊ฐœ์ตœ
Dreamhack
์ง„ํ–‰์‹œ๊ฐ„
15์‹œ๊ฐ„
ํŒ€ ๊ทœ๋ชจ
๊ฐœ์ธ
๊ฐœ์š”

Dreamhack CTF๋Š” ์ •๊ธฐ์ ์œผ๋กœ ๊ฐœ์ตœ๋˜๋Š” ๋Œ€ํšŒ์ž…๋‹ˆ๋‹ค.

๋ฌธ์˜

๊ทœ์น™
  1. CTF ์ฐธ๊ฐ€์ž ๊ฐ„์˜ ์ •๋‹ต ๊ณต์œ  ๋ฐ ํ’€์ด ๊ณผ์ • ๊ณต์œ ๋Š” ์—„๊ฒฉํžˆ ๊ธˆ์ง€๋˜์–ด ์žˆ์œผ๋ฉฐ, ์‹ค๊ฒฉ์˜ ๋Œ€์ƒ์ด ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
  2. CTF ์ฐธ์—ฌ์ž๋Š” ๋ฐ˜๋“œ์‹œ ๊ณต๊ฒฉ ๋Œ€์ƒ์œผ๋กœ ์ •ํ•ด์ง„ ์„œ๋ฒ„๋งŒ์„ ์ ‘์†ํ•˜๊ณ  ๊ณต๊ฒฉํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
  3. Dreamhack์„ ํฌํ•จํ•œ CTF ์„œ๋ฒ„ ์šด์˜์— ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ํ–‰์œ„ ํ˜น์€ ์›ํ™œํ•œ ์ง„ํ–‰์— ๋ฐฉํ•ด๊ฐ€ ๋  ์ˆ˜ ์žˆ๋Š” ํ–‰๋™ ๋ฐ ์‹œ๋„ ๋˜ํ•œ ์‹ค๊ฒฉ์˜ ๋Œ€์ƒ์ด ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
  4. ๋Œ€ํšŒ๊ฐ€ ์ง„ํ–‰๋˜๋Š” ๋™์•ˆ ๋ฌธ์ œ ํŒŒ์ผ์„ ๋‹ค๋ฅธ ์‚ฌ๋žŒ๊ณผ ๊ณต์œ ํ•˜๋ฉด ์•ˆ๋ฉ๋‹ˆ๋‹ค.
๋ณด์ƒ
  • ๋‹ทํ•ต ํ‹ฐ์…”์ธ 
    • ์ƒ์œ„ 1๋ช…
    • ์ถ”์ฒจ 4๋ช… (์ตœ์†Œ ํ•œ ๋ฌธ์ œ ์ด์ƒ ํ•ด๊ฒฐํ•œ ์‚ฌ๋žŒ)
์ฑ„์ 

๊ฐ ๋ฌธ์ œ์˜ ์ ์ˆ˜๋Š” ํ’€์ด์ž ์ˆ˜์— ๋”ฐ๋ผ ์กฐ์ •๋ฉ๋‹ˆ๋‹ค.

ํ”Œ๋ž˜๊ทธ ํ˜•์‹

ํ”Œ๋ž˜๊ทธ์˜ ํ˜•์‹์€ DH{...}์ž…๋‹ˆ๋‹ค.

ํ”Œ๋ž˜๊ทธ ์ œ์ถœ ์ œํ•œ
๋ฌธ์ œ๋‹น 30์ดˆ๋งˆ๋‹ค ํ•œ ๋ฒˆ์”ฉ Flag๋ฅผ ์ œ์ถœ ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.