Rating: 3.0
With the challenge we get this JPEG image:
The challenge name and the challenge description clearly indicates that we need to use Jsteg this is a tool used for hiding data in the least segnificant bit (LSB) of the bytes in the image
The image is actually an image of the creator of the tool (luke),
A image was given and seriously what techniques was to be used I used Steghide to get the flag and no passphrase was required for this.
steghide extract -sf doh.jpg
This was the flag : JCTF{an_annoyed_grunt}
An audio file was given and after listening to it I was sure that this are DTMF tones so I used this dialabc to get the numbers.
46327402297754110981468069185383422945309689772058551073955248013949155635325
After some observation I found it a decimal to hex converion :
and then hex to ascii
we were just give a .docx file.
FLAG : flag{oof_is_right_why_gfxdata_though}
I first analyzed the file through binwalk, and got so many zipped files.
Then extracted it , and bruteforced to get the flag.
