CTF NAME: FLAG #
Point: 30
Category: Steganography
Description:
There are Multiple Flag find the actual one
Attachment: A jpg file.
Flag: CBCTF{Y0ur_F1r5t_Fl4G}
Solve:
At first I run “exiftool“ to view Exif metadata and found a secret key.
The secret key: 2dc5Tyc6kKNO2rCW9c2q90jwtVQoQf
I gave it to “Dcode.fr” to know about the cipher text.
It is Base62. Then I decoded it.
And Then I got the flag.
Maybe there are multiple flags as the description said, but I got it on my first try. Hehe.