• ๋ฌธ์ œ
  • ํ’€์ด
  • ๋žญํ‚น
  • ๊ณต์ง€์‚ฌํ•ญ 1
  • ๊ฒฐ๊ณผ
  • ๋ฌธ์˜
๋Œ€ํšŒ ๋ฌธ์ œ๋ฅผ ๋ณด๋ ค๋ฉด ๋กœ๊ทธ์ธ ํ•ด ์ฃผ์„ธ์š”!
๋กœ๊ทธ์ธ

ํ’€์ด

Flying Chars
๊ณต์‹ ํ’€์ด
web
Dreamhack
free
Small Counter
๊ณต์‹ ํ’€์ด
reversing
Dreamhack
free
ROT128
๊ณต์‹ ํ’€์ด
crypto
Dreamhack
free
blue-whale
๊ณต์‹ ํ’€์ด
misc
Dreamhack
free
Flying Chars
๋ฌด๋ฃŒ ํ’€์ด
web
ํƒˆํ‡ดํ•œ ์ด์šฉ์ž
free

๋žญํ‚น

291๋ช…์ด ์ฐธ์—ฌํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.
์ˆœ์œ„
์‚ฌ์šฉ์ž
์ ์ˆ˜
๊ฐฑ์‹  ์‹œ๊ฐ„
ํ‘ผ ๋ฌธ์ œ
1์œ„ 706 pts
11๊ฐœ์›” ์ „
2์œ„ 706 pts
11๊ฐœ์›” ์ „
3์œ„ 706 pts
11๊ฐœ์›” ์ „
4์œ„ 706 pts
11๊ฐœ์›” ์ „
5์œ„ 706 pts
11๊ฐœ์›” ์ „
6์œ„ 706 pts
11๊ฐœ์›” ์ „
7์œ„ 706 pts
11๊ฐœ์›” ์ „
8์œ„ 706 pts
11๊ฐœ์›” ์ „
9์œ„ 706 pts
11๊ฐœ์›” ์ „
10์œ„ 706 pts
11๊ฐœ์›” ์ „
11์œ„ 706 pts
11๊ฐœ์›” ์ „
12์œ„ 706 pts
11๊ฐœ์›” ์ „
13์œ„ 706 pts
11๊ฐœ์›” ์ „
14์œ„ 706 pts
11๊ฐœ์›” ์ „
15์œ„ 706 pts
11๊ฐœ์›” ์ „

๊ณต์ง€์‚ฌํ•ญ 1

์ „์ฒด์—๊ฒŒ ์•Œ๋ฆผ NEW
2023.05.27. 13:58:04

** Notice for Flying Chars **
every letter 'C' in the flag is Upper case
every letter 'x', 's', 'o' in the flag are Lower case

๊ฒฐ๊ณผ

Gold III
1501
115
687 pts
Gold III
1579
135
687 pts
Platinum II
1919
228
687 pts
Gold II
1684
317
687 pts
Silver I
1461
166
687 pts
Gold III
1516
100
687 pts
Gold III
1527
136
687 pts
Gold III
1536
96
687 pts
Gold III
1586
687 pts
Gold III
1551
93
687 pts
Gold III
1588
119
687 pts
Gold III
1501
90
687 pts
Gold II
1609
105
687 pts
Gold III
1563
687 pts
Gold II
1606
687 pts
Silver I
1494
97
687 pts
Silver I
1454
115
687 pts
Silver I
1491
199
687 pts
Gold II
1655
687 pts
Gold II
1605
96
687 pts
Gold III
1520
104
687 pts
Silver I
1436
146
687 pts
Gold II
1643
85
687 pts
Gold III
1506
86
687 pts
Gold III
1528
83
687 pts
Gold III
1527
687 pts
Silver I
1451
687 pts
Silver I
1442
687 pts
Gold I
1740
45
687 pts
Gold III
1506
687 pts
Season 3
Dreamhack CTF Season 3 Round #4 (๐ŸŒฑDiv2)
์ผ์‹œ
2023.05.27. 09:00:00
~ 2023.05.27. 23:59:59
295๋ช… ์ฐธ์—ฌ
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.
๋ณด์ƒ
  • ๋ฉ”๊ฐ€๋ฐ•์Šค ๋ผ์ดํ”„ ์‹œ์–ดํ„ฐ 1์ธ์„ธํŠธ(๊ด€๋žŒ๊ถŒ1+ํŒ์ฝ˜R+์Œ๋ฃŒR)(์ฃผ์ค‘/์ฃผ๋ง)
    • ์ƒ์œ„ 1๋ช…
    • ์ถ”์ฒจ 4๋ช… (์ตœ์†Œ ํ•œ ๋ฌธ์ œ ์ด์ƒ ํ‘ผ ์ž)

์ƒํ’ˆ ์ถ”์ฒจ์€ ๋“œ๋ฆผํ•ต ๊ณต์‹ ๋””์Šค์ฝ”๋“œ ์„œ๋ฒ„ ์˜ #dh-ctf-season3 ์ฑ„๋„์—์„œ ์ง„ํ–‰ํ•ฉ๋‹ˆ๋‹ค.

โ€ป ๋“œ๋ฆผํ•ต ๋””์Šค์ฝ”๋“œ์—์„œ ์ƒํ’ˆ ์•ˆ๋‚ด๊ฐ€ ์ด๋ฃจ์–ด์ง‘๋‹ˆ๋‹ค. ์•ˆ๋‚ด๋ฅผ ํ™•์ธํ•˜์ง€ ๋ชปํ•˜์—ฌ ์ƒํ’ˆ์„ ๋ฐ›์ง€ ๋ชปํ•˜์˜€์„ ๊ฒฝ์šฐ, ์žฌ๋ฐœ์†กํ•ด ๋“œ๋ฆฌ์ง€ ์•Š์Šต๋‹ˆ๋‹ค.

โ€ป ๋ณด์ƒ์€ ์ƒํ™ฉ์— ๋”ฐ๋ผ ๋น„์Šทํ•œ ๊ธˆ์•ก์˜ ๋‹ค๋ฅธ ์ƒํ’ˆ์œผ๋กœ ๋ฐ”๋€” ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

์ฑ„์ 

ํ•ด๋‹น CTF๋Š” ๋ฌธ์ œ ํ’€์ด์ž ์ˆ˜์— ๋”ฐ๋ผ ์ ์ˆ˜๊ฐ€ ๋ณ€ํ•˜๋Š” ์‹œ์Šคํ…œ์„ ์ฑ„์šฉํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.

ํ”Œ๋ž˜๊ทธ ํ˜•์‹

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

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