LIT CTF 2023 - amogus

Description

Category: Misc

amogus sus (wrap flag in LITCTF{})

Link : litctf.org:31775

Resolution

We go to the page and inspect the source file.

At the end of the index.html we can see this sentence:

<p>There is nothing to see here, but maybe you should check out the cover image of Among Us c:</p>

So we download the picture:

We use the command exiftool to seek for hidden info:

$ exiftool testing.jpg 
ExifTool Version Number         : 12.40
File Name                       : testing.jpg
Directory                       : .
File Size                       : 172 KiB
File Modification Date/Time     : 2023:08:05 19:40:03+02:00
File Access Date/Time           : 2023:08:05 19:40:06+02:00
File Inode Change Date/Time     : 2023:08:05 19:40:06+02:00
File Permissions                : -rw-rw-r--
File Type                       : JPEG
File Type Extension             : jpg
MIME Type                       : image/jpeg
JFIF Version                    : 1.01
X Resolution                    : 1
Y Resolution                    : 1
Exif Byte Order                 : Big-endian (Motorola, MM)
Make                            : s0m3t1m3s_th1ngs_4re_n0t_4lw4ys_wh4t_th3y_s33m
Resolution Unit                 : None
Y Cb Cr Positioning             : Centered
Image Width                     : 2560
Image Height                    : 1440
Encoding Process                : Progressive DCT, Huffman coding
Bits Per Sample                 : 8
Color Components                : 3
Y Cb Cr Sub Sampling            : YCbCr4:4:4 (1 1)
Image Size                      : 2560x1440
Megapixels                      : 3.7

And we get the flag: LITCTF{s0m3t1m3s_th1ngs_4re_n0t_4lw4ys_wh4t_th3y_s33m}.

I used Aperi’Solve before using exiftool but I missed the flag because I wasn’t paying attention to the result of exiftool given by Aperi’Solve.