CTF
UIUCTF 2024 | OSINT Challenge: NIGHT
UIUCTF 2024
OSINT Challenge: NIGHT
For this challenge, my initial thought was to check the EXIF data but the location information was removed from the metadata of the image. My second thought was to do a reverse image-search of the image provided for the challenge. After spending some time scrolling through the results and not getting any leads, I decided to change tactic so I did a google-search for "image location finder" hoping to find some tool that would give me a lead to where the picture was taken. Luckily enough, I found an AI tool called geospy which recognised the highway and the buildings that were displayed in the photo pointing out that the highway was "Interstate 90" in Boston. As I am not American, I am not familiar with popular landmarks of the different cities so the information from geospy was what helped me massively solving this challenge.
After loading up the city of Boston on google maps, I started looking for the Interstate-90 that would be going through a central location of the city. From looking at the picture it was pretty obvious that the photo was taken from one of the bridges overseeing the highway as the viewpoint is quite elevated.
I started trying the "person view" to verify the viewpoint as seen on the picture. Within two tries, I was able to solve this challenge and the correct answer was "Arlington Street, Boston" the flag was uiuctf{Arlington Street, Boston}.