CanYouSee

Description

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

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Steps

1. Try increasing the brightness and change the image to black and white to see something hidden, nothing found :
   
2. lets see metadata :

╰─❯ exiftool ukn_reality.jpg                                                                                                   ─╯
ExifTool Version Number         : 13.10
File Name                       : ukn_reality.jpg
Directory                       : .
File Size                       : 2.3 MB
File Modification Date/Time     : 2024:02:16 04:10:21+05:30
File Access Date/Time           : 2025:02:03 20:59:21+05:30
File Inode Change Date/Time     : 2025:02:03 20:57:05+05:30
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                 : cGljb0NURntNRTc0RDQ3QV9ISUREM05fYTZkZjhkYjh9Cg==
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

Attribution URL :* cGljb0NURntNRTc0RDQ3QV9ISUREM05fYTZkZjhkYjh9Cg==*, this seems like a base64. lets decrypt :

╰─❯ echo "cGljb0NURntNRTc0RDQ3QV9ISUREM05fYTZkZjhkYjh9Cg== " | base64 -d                                                       
picoCTF{ME74D47A_HIDD3N_a6df8db8}

EASYY :3