snowbird91

Where’s Legally Distinct Waldo Two

27 Nov 2025
osint patriotctf2025

PatriotCTF 2025

I participated with my club team tjcsc in PatriotCTF 2025, and we got 54th overall!

Challenge: Where’s Legally Distinct Waldo Two

Category: OSINT

Flag: pctf{thompson_hall}

So, here is the provided image:

Provided challenge image

Wait! I drove by here while heading to the in-person launch event! We can see that there’s some road in between some buildings. This is probably on campus like the first one. Let’s do some reconnaissance.

Initial reconnaissance reference

First, I noticed a building with an interesting and pretty unique glass design. Looking around on Google Maps, I see:

Google Maps glass building

That looks just like the building in the image! Now, let’s match the surroundings and get the angle at which the image was taken from:

Matching the camera angle

This looks pretty similar to the angle at which the image was taken. I see a few similar features:

Feature comparison

Determining the capture building

Looks great! Now, let’s find the building the image was taken from based on this angle:

Thompson Hall confirmation

Thompson Hall? Let’s try that…

Great! The flag was pctf{thompson_hall}. Another easy challenge done!