HackPack CTF 2021: Aurora | szymanski.ninja

Aurora

Category: misc

50 points

Aurora is a marvelous phenomenon caused by the interaction between strong solar wind and magnetosphere around the earth.

Image source: https://science.nasa.gov/flag-shaped-aurora-over-sweden

Aurora

Solution

exiftool Aurora.jpg

ExifTool Version Number         : 12.16
File Name                       : Aurora.jpg
Directory                       : /home/luc/Pobrane
File Size                       : 80 KiB
File Modification Date/Time     : 2021:04:17 01:06:59+02:00
File Access Date/Time           : 2021:04:17 01:07:03+02:00
File Inode Change Date/Time     : 2021:04:17 01:07:01+02:00
File Permissions                : rw-r--r--
File Type                       : JPEG
File Type Extension             : jpg
MIME Type                       : image/jpeg
JFIF Version                    : 1.02
Resolution Unit                 : None
X Resolution                    : 100
Y Resolution                    : 100
Comment                         : flag{6e4ut1fuL_Aur0r4}
Quality                         : 60%
DCT Encode Version              : 100
APP14 Flags 0                   : [14], Encoded with Blend=1 downsampling
APP14 Flags 1                   : (none)
Color Transform                 : YCbCr
Image Width                     : 960
Image Height                    : 641
Encoding Process                : Baseline DCT, Huffman coding
Bits Per Sample                 : 8
Color Components                : 3
Y Cb Cr Sub Sampling            : YCbCr4:4:4 (1 1)
Image Size                      : 960x641
Megapixels                      : 0.615

Hey, isn’t that a flag in the comment?

Flag

flag{6e4ut1fuL_Aur0r4}