The challenge provides as with the image showed below as well as a hint that this has something to do with zip files (07601 is the magic number of zip files)
Naturally the first thing that I did was to run the file, exiftool and strings command to try and hint more hints. Surprisingly, a flag was found by using the string command.
$ strings AGT.png | grep CTF
ABCTF{fooled_ya_dustin}
But it seems that the flag is not the correct one, thus I moved to the binwalk command tool to try and find any embedded files in the png. The binwalk tool showed that there are 3 zip files embedded in the picture
$ binwalk AGT.png
DECIMAL HEXADECIMAL DESCRIPTION
--------------------------------------------------------------------------------
0 0x0 JPEG image data, JFIF standard 1.01
9584 0x2570 Zip archive data, at least v1.0 to extract, name: Secret Stuff.../
9646 0x25AE Zip archive data, at least v2.0 to extract, name: Secret Stuff.../.DS_Store
10270 0x281E Zip archive data, at least v1.0 to extract, name: __MACOSX/
10325 0x2855 Zip archive data, at least v1.0 to extract, name: __MACOSX/Secret Stuff.../
10396 0x289C Zip archive data, at least v2.0 to extract, name: __MACOSX/Secret Stuff.../._.DS_Store
10546 0x2932 Zip archive data, at least v1.0 to extract, name: Secret Stuff.../Don't Open This.../
10627 0x2983 Zip archive data, at least v2.0 to extract, name: Secret Stuff.../Don't Open This.../.DS_Store
10988 0x2AEC Zip archive data, at least v1.0 to extract, name: __MACOSX/Secret Stuff.../Don't Open This.../
11078 0x2B46 Zip archive data, at least v2.0 to extract, name: __MACOSX/Secret Stuff.../Don't Open This.../._.DS_Store
11247 0x2BEF Zip archive data, at least v2.0 to extract, name: Secret Stuff.../Don't Open This.../I Warned You.jpeg
150550 0x24C16 Zip archive data, at least v2.0 to extract, name: __MACOSX/Secret Stuff.../Don't Open This.../._I Warned You.jpeg
151810 0x25102 End of Zip archive, footer length: 22
151832 0x25118 Zip archive data, at least v1.0 to extract, name: Secret Stuff.../
151894 0x25156 Zip archive data, at least v2.0 to extract, name: Secret Stuff.../.DS_Store
152518 0x253C6 Zip archive data, at least v1.0 to extract, name: __MACOSX/
152573 0x253FD Zip archive data, at least v1.0 to extract, name: __MACOSX/Secret Stuff.../
152644 0x25444 Zip archive data, at least v2.0 to extract, name: __MACOSX/Secret Stuff.../._.DS_Store
152794 0x254DA Zip archive data, at least v1.0 to extract, name: Secret Stuff.../Don't Open This.../
152875 0x2552B Zip archive data, at least v2.0 to extract, name: Secret Stuff.../Don't Open This.../.DS_Store
153236 0x25694 Zip archive data, at least v1.0 to extract, name: __MACOSX/Secret Stuff.../Don't Open This.../
153326 0x256EE Zip archive data, at least v2.0 to extract, name: __MACOSX/Secret Stuff.../Don't Open This.../._.DS_Store
153495 0x25797 Zip archive data, at least v2.0 to extract, name: Secret Stuff.../Don't Open This.../I Warned You.jpeg
292768 0x477A0 Zip archive data, at least v2.0 to extract, name: __MACOSX/Secret Stuff.../Don't Open This.../._I Warned You.jpeg
294028 0x47C8C End of Zip archive, footer length: 22
294050 0x47CA2 Zip archive data, at least v1.0 to extract, name: Secret Stuff.../
294112 0x47CE0 Zip archive data, at least v2.0 to extract, name: Secret Stuff.../.DS_Store
294736 0x47F50 Zip archive data, at least v1.0 to extract, name: Secret Stuff.../Don't Open This.../
294817 0x47FA1 Zip archive data, at least v2.0 to extract, name: Secret Stuff.../Don't Open This.../.DS_Store
295162 0x480FA Zip archive data, at least v2.0 to extract, name: Secret Stuff.../Don't Open This.../I Warned You.jpeg
434433 0x6A101 Zip archive data, at least v1.0 to extract, name: __MACOSX/
434488 0x6A138 Zip archive data, at least v1.0 to extract, name: __MACOSX/Secret Stuff.../
434559 0x6A17F Zip archive data, at least v1.0 to extract, name: __MACOSX/Secret Stuff.../Don't Open This.../
434649 0x6A1D9 Zip archive data, at least v2.0 to extract, name: __MACOSX/Secret Stuff.../Don't Open This.../._I Warned You.jpeg
435702 0x6A5F6 End of Zip archive, footer length: 22
By looking at the binwalk output we can see that all of the have the same jpeg image called _I Warned You.jpeg.
After extracting the image from one of the embedded zip archives and executing a strings command we find the actual flag
$ strings I\ Warned\ You.jpeg | grep CTF
ABCTF{Du$t1nS_D0jo}1r