반응형
This one is also an interesting problem. I downloaded a picture from the server and I opened it.
I could see a bagel image. Actually, I am a newbie of CTF competition so whenever I see the picture I always have an assumption that picture has a hidden message, which is steganography. So I tried to decode it. There are tons of steganographic decoder website, however, below one only supports jpeg file. And I simply got the flag
> https://futureboy.us/stegano/decinput.html
Flag : utflag{b1u3b3rry_b4g3ls_4r3_th3_b3st}
Reference site : https://utctf.live/challenges#Low%20Sodium%20Bagel
반응형
'<개인공부> - IT > [CTF (Write up)]' 카테고리의 다른 글
TAMUctf '19 Write-up (Hello World) (0) | 2019.03.24 |
---|---|
Pragyan CTF 19' Write-up / Welcome (0) | 2019.03.18 |
UTCTF 19' Write-up / [basics] forensics (0) | 2019.03.15 |
UTCTF 19' Write-up / [basics] re (0) | 2019.03.15 |
UTCTF 19' Write-up / [basics] crypto (0) | 2019.03.10 |