A friend from Mexic sent me the attached picture on Telegram. What does it mean?
Flag is not in a standard format.
SISENIORILOVETACOBELLVERYVERYMUCH
Use binwalk to extract the hidden image in the original image, and decrypt the code in the original image with the cipher from the hidden image.
The image we are given has another image hidden inside of it. Extract usingbinwalk -e mexican_specialties.jpg
We have a wheel.png
We use https://www.onlineocr.net/ to get the text from the image:
193597054061417009124122832027299354313890000518250031445191998160
The image suggests this is mexican army cipher, so we try decoding using the default ring setup at https://www.dcode.fr/mexican-army-cipher-wheel.
We get: SISENIORILOVETACOBELLVERYVERYMUCH