Pico CTF

Can You See Me

Description

How about some hide and seek? Download this file here.

Hints

  1. How can you view the information about the picture?
  2. If something isn't in the expected form, maybe it deserves attention?

Solution

picoCTF{ME74D47A_HIDD3N_6a9f5ac4}

CLI

kappa@kappa-Aspire-Z5600:~/Desktop/canYouSee$ ls
can_you_see.md ukn_reality.jpg unknown.zip

kappa@kappa-Aspire-Z5600:~/Desktop/canYouSee$ exiftool ukn_reality.jpg 
          ExifTool Version Number         : 12.40
          File Name                       : ukn_reality.jpg
          Directory                       : .
          File Size                       : 2.2 MiB
          File Modification Date/Time     : 2024:03:11 17:05:55-07:00
          File Access Date/Time           : 2024:12:27 13:41:05-08:00
          File Inode Change Date/Time     : 2024:12:27 13:41:05-08:00
          File Permissions                : -rw-r--r--
          File Type                       : JPEG
          File Type Extension             : jpg
          MIME Type                       : image/jpeg
          JFIF Version                    : 1.01
          Resolution Unit                 : inches
          X Resolution                    : 72
          Y Resolution                    : 72
          XMP Toolkit                     : Image::ExifTool 11.88
          Attribution URL                 : cGljb0NURntNRTc0RDQ3QV9ISUREM05fNmE5ZjVhYzR9Cg==
          Image Width                     : 4308
          Image Height                    : 2875
          Encoding Process                : Baseline DCT, Huffman coding
          Bits Per Sample                 : 8
          Color Components                : 3
          Y Cb Cr Sub Sampling            : YCbCr4:2:0 (2 2)
          Image Size                      : 4308x2875
          Megapixels                      : 12.4
kappa@kappa-Aspire-Z5600:~/Desktop/canYouSee$ echo -n 'cGljb0NURntNRTc0RDQ3QV9ISUREM05fNmE5ZjVhYzR9Cg' | base64 --decode
picoCTF{ME74D47A_HIDD3N_6a9f5ac4}
base64: invalid input
kappa@kappa-Aspire-Z5600:~/Desktop/canYouSee$