by haakons
solved by haakons and n0tus and first blood! :)
Walkabout was an OSINT/puzzle run task, where the challenge began by receiving a QR code. Each QR code gave a hint to the next location and the flag would be at the final destination.
Find the location presented when scanning the QR-code, you will find the flag at the final location.
The first QR code gave us the following image
Click to view the image
Living in the city has some advantages, among those having a local grandmother who wants to show you the famous Munch museum. The building we can observe on the right side is the famous museum, but using google reverse image would also have given a hint of this location.
For reference here is the same location, but a bit more zoomed out. Red circle marks the spot where we found the next QR code.
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The second QR code gave us the following image
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If you are a man/woman of culture this would be your ideal puzzle run, the next location is also a famous landmark in Oslo. The wall that might resemble some sort of braille(?) is a distinct wall pattern found on the Opera house. Here we see the wall texture of the opera house and the same orange/redish building as seen in the picture below.
Click to view the image
You would notice that the cranes in the first picture is also present in this one, but this time it appears to be from an elevated angle. Another thing the Opera House is known for is the walkable roof, so lets look for a QR code there!
Google maps appears to be a bit afraid of heights so here is a satelite picture of the QR code location. Red circle marks the spot.
Click to view the image
The third QR code gave us the following image.
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So here is a question, where do you go to get your best tips on what stocks to buy? No, not r/wallstreetbets, the Oslo børs of course! The third picture shows the gates outside the Oslo Børs, you can also bearly see the statue at the left side of the image. This location could also have been found by cropping out the the mentioned statue and doing a reverse google image lookup.
Location of the third QR code
Click to view the image
The last image did not contain a picture of a location, but a picture of "the city's best kebab since 1984". Being born and raised in the city I have had my fair share of the local food, and luckily for me, this particular place I have done a thorough research of beforhand. Here google reverse image would have told you that this image belongs to the kebab shop "Dronningens Kebab" famous for their well... kebab.
Click to view the image
A fun fact about this particular shop is that it recently moved location. Below is were it used to be, close to Oslo Domkirke.
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But the current location is here: 32 Skippergata (thank me later). A google search would have showed you the new address, but the attached google picture might show the old location (at the time of the CTF that appeared to be the case)
This turned out to be a game changer, as we had been passed by other teams at this point, but when we went to the old location we suddenly remembered that it had moved, and ended up getting first blood because of this. Red square marks where the last QR code was found.
Click to view the image
The last QR code gave us the flag: EPT{1_w1ll_walk_f1v3_hundr3d_m1l3s}
Below is the entire route as seen from satelite
Click to view the image
