idekCTF 2022: NMPZ (OSINT)

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idekCTF 2022: NMPZ (OSINT)

Intro

Recently my team (Project Sekai) and I played idekCTF 2022* (with an asterisk… because it’s 2023), which was an extraordinarily “race against the clock”-esque CTF with a ridiculously large pool of challenges - 58 of them, over a 48-hour runtime. We managed to snag a 1st place finish after countless hours of not touching grass (despite analyzing it throughout this challenge), and I would like to share my personal favorite OSINT challenge of the competition - “NMPZ”, an acronym in the GeoGuessr community for “no moving, panning, or zooming.” Although my team hadn’t 100% correctly solved the challenge (we inferred part of the flag), here was our thought process tackling it. Enjoy!


NMPZ

author: jazzzooo
genre: osint
points: 474
files: nmpz.zip
Are you as good as Rainbolt at GeoGuessr? Prove your skills by geo-guessing these 17 countries.

$ tree
.
├── 1.png
├── 2.png
...
├── 17.png
└── README

The provided README file contains the following:

README(.txt)

1
2
3
4
Figure out in which country each image was taken.
The first letter of every country's name will create the flag.
Countries with over 10 million inhabitants will have a capital letter.
Countries with less than one million inhabitants become an underscore.

Here is a table of the provided example flag (idek{TEST_flAg}), and how the flag construction works:

Image Country of Origin Population Flag
1.png idekCTF 2022: NMPZ (OSINT) Turkey 84,680,273 (2021) T
2.png idekCTF 2022: NMPZ (OSINT) Ecuador 18,145,568 (2023) E
3.png idekCTF 2022: NMPZ (OSINT) Spain 47,615,034 (2022) S
4.png idekCTF 2022: NMPZ (OSINT) Thailand 66,883,467 (2023) T
5.png idekCTF 2022: NMPZ (OSINT) Vatican City 825 (2019) _
6.png idekCTF 2022: NMPZ (OSINT) Finland 5,528,796 (2022) f
7.png idekCTF 2022: NMPZ (OSINT) Lithuania 2,839,020 (2022) l
8.png idekCTF 2022: NMPZ (OSINT) Argentina 47,327,407 (2022) A
9.png idekCTF 2022: NMPZ (OSINT) Georgia 3,688,600 (2022) g

 

We’re given… 17 different screenshots of locations on Google Street View. Currently, our goal is to find the country of origin for each and every single one of these screenshots, and to combine each letter together to form the flag (as per the README). Here’s a quick preview of all of them:

1.png

Captured: March 2022

idekCTF 2022: NMPZ (OSINT)

2.png

Captured: November 2011

idekCTF 2022: NMPZ (OSINT)

3.png

Captured: June 2019

idekCTF 2022: NMPZ (OSINT)

4.png

Captured: December 2014

idekCTF 2022: NMPZ (OSINT)

5.png

Captured: September 2021

idekCTF 2022: NMPZ (OSINT)

6.png

Captured: August 2013

idekCTF 2022: NMPZ (OSINT)

7.png

Captured: November 2014

idekCTF 2022: NMPZ (OSINT)

8.png

Captured: April 2013

idekCTF 2022: NMPZ (OSINT)

9.png

Captured: August 2014

idekCTF 2022: NMPZ (OSINT)

10.png

Captured: November 2014

idekCTF 2022: NMPZ (OSINT)

11.png

Captured: September 2012

idekCTF 2022: NMPZ (OSINT)

12.png

Captured: November 2022

idekCTF 2022: NMPZ (OSINT)

13.png

Captured: October 2020

idekCTF 2022: NMPZ (OSINT)

14.png

Captured: June 2015

idekCTF 2022: NMPZ (OSINT)

15.png

Captured: March 2012

idekCTF 2022: NMPZ (OSINT)

16.png

Captured: June 2016

idekCTF 2022: NMPZ (OSINT)

17.png

Captured: June 2013

idekCTF 2022: NMPZ (OSINT)

Let’s get to work.


1.png

idekCTF 2022: NMPZ (OSINT)

Looks like we’re on a waterfront walkway with a beautiful view of a harbor. A quick Google Lens results in a “Muerta da Urca“ in Rio de Janeiro, idekCTF 2022: NMPZ (OSINT) Brazil:

idekCTF 2022: NMPZ (OSINT)

Oh, yeah, there’s totally a World Wonder in the background by the way… Christ the Redeemer:

idekCTF 2022: NMPZ (OSINT)

Since Brazil had a population of ~215 million in 2022, it’ll be capitalized in the flag. For brevity’s sake, I’ll be omitting the populations from here on out - however, I’ll still include them (alongside sources) in the upcoming progress tables.

Trivial! 1/17 down.

Flag Progress: idek{B_________________}

2.png

idekCTF 2022: NMPZ (OSINT)

Wow… this is the most idekCTF 2022: NMPZ (OSINT) Russia photo I’ve ever seen! If you don’t believe me, here’s a Google Lens of the very evident St. Basil’s Cathedral looming in the background:

idekCTF 2022: NMPZ (OSINT)
Flag Progress: idek{BR________________}

3.png

idekCTF 2022: NMPZ (OSINT)

Finally, no more trivial landmarks in the background! Looks like we’re now on the roadside of some European business-y area. I quickly noticed a name on the brown sign attached to the streetlight:

idekCTF 2022: NMPZ (OSINT)

It reads “Kalamaja”, which upon a quick Google results in a small city district in Tallinn, idekCTF 2022: NMPZ (OSINT) Estonia:

idekCTF 2022: NMPZ (OSINT)
Flag Progress: idek{BRe______________}

4.png

idekCTF 2022: NMPZ (OSINT)

The middle of nowhere… a classic. Let’s see what the Google Lens yields:

idekCTF 2022: NMPZ (OSINT)

The first result identifies a Stuart Highway, which runs straight through central idekCTF 2022: NMPZ (OSINT) Australia (a.k.a. the middle of nowhere). Also, if you look closely, there’s a reflector sign in the center of the photo which looks exactly like the Australian bollard on geohints.com, a resource for GeoGuessr players:

idekCTF 2022: NMPZ (OSINT)
Zoomed in bollard

 

idekCTF 2022: NMPZ (OSINT)
GeoHints Australian bollard

 

Additionally, a key “Australian” identifier would be the orangey dirt on the roadsides, which is common around the country.

Flag Progress: idek{BReA____________}

5.png

idekCTF 2022: NMPZ (OSINT)

This one was extraordinarily rough. According to the author themselves:

its hilarious that every single person got one country wrong, but the letter was the same so it didnt matter… you included 😉

- jazzzooo

…and apparently this was the one that everyone was messing up!

Let’s move on to my approach. I noticed a few things:

idekCTF 2022: NMPZ (OSINT)
  1. The extraordinarily ambiguous "Third St" on top of the grey SUV in front of us
  2. The words "Al-Siraad Plaza" plastered to the side of the grey building on the left
  3. The words "Ab-Furqan" on the poster above the white/green checkered wall on the left
  4. Arabic script on the walls of the white/green building on the right
  5. An advertisement for "Peri Peri Pizza" on the far right
  6. Consistently yellow license plates

All signs point to an Arabic-speaking country. In addition, since we solved each image out of order (and knew the next character would be an underscore) the flag contained the word segment BREA-, which only had three possibilities to form a proper word: BREAD, BREAK, and BREAM (which we ruled out due to unlikeliness). As a result, we simply guessed the country to be idekCTF 2022: NMPZ (OSINT) Kazakhstan (even though it doesn’t have official Google Street View coverage and Arabic isn’t a nationally recognized language).

GeoGuessr Meta: The Infamous Snorkel

Now… here is the absolutely crazy part. After solving the challenge, the author revealed to me what the actual country was:

do you see the little snorkel on the right front corner of your car in 5.png?
i implore you to google “geoguessr snorkel” haha

- jazzzooo

I had no idea what they were talking about, so I zoomed in on the car and lo and behold, snorkel:

idekCTF 2022: NMPZ (OSINT)

I did a quick Google search, and found a tweet from the official GeoGuessr Twitteraccount:

Apparently, this was one of the strategies that GeoGuessr pros use to quickly identify countries: using the car the Photo Sphere was taken from to their advantage, considered to be part of the “meta” game. The “idekCTF 2022: NMPZ (OSINT) Kenyan Snorkel” was one of the more infamous ones, and I had no idea it existed. I was absolutely blown away.

Flag Progress: idek{BReAK___________}

6.png

idekCTF 2022: NMPZ (OSINT)

Ah, yes, another “middle of nowhere.” This time, however, it’s a bit easier! Here’s the Google Lens yield:

idekCTF 2022: NMPZ (OSINT)

Yep, that’s definitely idekCTF 2022: NMPZ (OSINT) Iceland. Here are some things you use to identify Iceland:

  • 99% of the time there will be overcast skies
  • Off-green, almost yellow-ish grass. Here is an example from GeoHints:
idekCTF 2022: NMPZ (OSINT)
  • Bollards! These ones are bright yellow with a diagonally pointed top, and a white reflector:
idekCTF 2022: NMPZ (OSINT)
Zoomed in bollard

 

idekCTF 2022: NMPZ (OSINT)
GeoHints Icelandic bollard

 

This character will be an underscore (_), since the population of Iceland is 376,000 (2022).

Flag Progress: idek{BReAK___________}

7.png

idekCTF 2022: NMPZ (OSINT)

Wow… I’ve never seen a neighborhood this massive with not a single piece of foliage in sight. Here’s the Google Lens output:

idekCTF 2022: NMPZ (OSINT)

Definitely Ulaanbaatar, idekCTF 2022: NMPZ (OSINT) Mongolia! We confirmed it with the license plate of the car on the left:

idekCTF 2022: NMPZ (OSINT)
Zoomed in plate

 

idekCTF 2022: NMPZ (OSINT)
Generic Mongolian plate

 

Flag Progress: idek{BReAK_m_________}

8.png

idekCTF 2022: NMPZ (OSINT)

This was arguably one of the hardest to solve (and one that we got incorrect). Here’s the Google Lens output:

idekCTF 2022: NMPZ (OSINT)

No idea! Our original guess was the idekCTF 2022: NMPZ (OSINT) Philippines or idekCTF 2022: NMPZ (OSINT) Indonesia, but BReAK_m(P/I)_ didn’t make any sense. We moved on to the next image and discovered it was an underscore (_), and eventually came to the conclusion that the country had to either start with E or Y to make any sense (to make either BReAK_m(Y/y)or BReAK_m(E/e)). The only recognized country which starts with Y is idekCTF 2022: NMPZ (OSINT) Yemen, which was an unlikely guess because of the consistent greenery, foliage, and hills (in the Arabian Peninsula, practically all desert).

In accordance with E/e as the only likely character, we eventually settled on either idekCTF 2022: NMPZ (OSINT) El Salvador or idekCTF 2022: NMPZ (OSINT) Ecuador, so this character would be either uppercase or lowercase.

Flag Progress: idek{BReAK_m(E/e)________}

9.png

idekCTF 2022: NMPZ (OSINT)

A Photo Sphere in the middle of the sea! Looks like we’re in a pretty large city, and it’s giving off tourist resort-y vibes. Here’s the Google Lens output:

idekCTF 2022: NMPZ (OSINT)

It looks like it’s identified the cityscape as belonging to idekCTF 2022: NMPZ (OSINT) Monaco. It’s even identified the facade of one of the buildings in the city as the Opéra de Monte-Carlo:

idekCTF 2022: NMPZ (OSINT)

Let’s add an underscore to the flag, since Monaco’s population is 37,308 (2016).

Flag Progress: idek{BReAK_m(E/e)________}

10.png

idekCTF 2022: NMPZ (OSINT)

We’re now given a small town in the hills of an assumingly European country (overall house aesthetic). Here’s the Google Lens output:

idekCTF 2022: NMPZ (OSINT)

Lens results are giving me either idekCTF 2022: NMPZ (OSINT) Switzerland or idekCTF 2022: NMPZ (OSINT) Norway. My suspicions for Switzerland were confirmed when I saw its recognizable square flag hanging off one of the houses:

idekCTF 2022: NMPZ (OSINT)
Flag Progress: idek{BReAK_m(E/e)_s_______}

11.png

idekCTF 2022: NMPZ (OSINT)

Splat in the middle of an inconspicuous-looking suburb! Here’s the Google Lens output when you focus in on the bollards on the street (since there’s nothing of interest anywhere else):

idekCTF 2022: NMPZ (OSINT)

Scrolling through the outputs results in distinctly idekCTF 2022: NMPZ (OSINT) Polish bollards:

idekCTF 2022: NMPZ (OSINT)
Zoomed in bollard

 

idekCTF 2022: NMPZ (OSINT)
GeoHints Polish bollard

 

Flag Progress: idek{BReAK_m(E/e)_sP______}

12.png

idekCTF 2022: NMPZ (OSINT)

More Europe! Here’s the Google Lens output:

idekCTF 2022: NMPZ (OSINT)

It looks like it’s so generically European that Google Lens can’t seem to pin a single country down. Let’s zoom in to see any pertinent details:

idekCTF 2022: NMPZ (OSINT)

The vertical sign reads “ELEKTRO”, whilst the lower horizontal sign reads “Weißensteiner”, two distinctly German words (with the latter being a surname, romanized into “Weissensteiner“). Although we could automatically assume idekCTF 2022: NMPZ (OSINT) Germany, there are multiple other German-speaking European countries, so we’ll have to narrow it down further.

Here’s the solution: simply Google “Elektro Weißensteiner” and you’ll find that it’s an electronics store based in idekCTF 2022: NMPZ (OSINT) Austria:

idekCTF 2022: NMPZ (OSINT)
Flag Progress: idek{BReAK_m(E/e)_sPa_____}

Pit Stop

We’ve now come to a completely arbitrary stopping point - from here on out, each .png will become exponentially harder… so let’s just recap what we’ve gotten so far. Note that incorrect countries will be italicized:

Image Country of Origin Population Flag
1.png idekCTF 2022: NMPZ (OSINT) Brazil 215,652,035 (2023) B
2.png idekCTF 2022: NMPZ (OSINT) Russia 146,980,061 (2022) R
3.png idekCTF 2022: NMPZ (OSINT) Estonia 1,331,796 (2022) e
4.png idekCTF 2022: NMPZ (OSINT) Australia 26,033,493 (2023) A
5.png idekCTF 2022: NMPZ (OSINT) Kazakhstan 19,392,112 (2023) K
6.png idekCTF 2022: NMPZ (OSINT) Iceland 385,230 (2022) _
7.png idekCTF 2022: NMPZ (OSINT) Mongolia 3,477,605 (2023) m
8.png idekCTF 2022: NMPZ (OSINT) El Salvador / idekCTF 2022: NMPZ (OSINT) Ecuador 6,825,935 (2021) / 18,145,568 (2023) e/E
9.png idekCTF 2022: NMPZ (OSINT) Monaco 39,150 (2021) _
10.png idekCTF 2022: NMPZ (OSINT) Switzerland 8,789,726 (2022) s
11.png idekCTF 2022: NMPZ (OSINT) Poland 37,796,000 (2022) P
12.png idekCTF 2022: NMPZ (OSINT) Austria 9,090,868 (2022) a

 

Let’s proceed with the rest of this challenge.


13.png

idekCTF 2022: NMPZ (OSINT)

This is probably the quintessential “North America” picture ever - impossibly flat land, a random city skyline in the background, and huge fields. A Google Lens search yields nothing we don’t already know:

idekCTF 2022: NMPZ (OSINT)

Currently, our only issue here is telling between either idekCTF 2022: NMPZ (OSINT) Canada or the idekCTF 2022: NMPZ (OSINT) United States. Let’s narrow it down a bit more.

The only telling sign here is road markings. Since I live in the US, I know that two-way roads (with one lane per direction) are typically marked with either broken double yellow lines or solid double yellow lines. Although single dashed yellow lines exist in the US, they are much more common in Canada (albeit still existing in the US). Here’s a diagram I threw up, which you can combine with the overall “feel” of an image to make a calculated guess:

idekCTF 2022: NMPZ (OSINT)

Alongside this, not a single common word in English starts with the prefix spau-, so ruling out the US is a no-brainer. However, the above knowledge about road markings is useful when you have no flag to infer characters from!

Flag Progress: idek{BReAK_m(E/e)_sPaC____}

14.png

idekCTF 2022: NMPZ (OSINT)

This one was actually really, really clever. Although a Google Lens yields nothing of use (since its viewpoint is a random tropical area), take a look at the bottom right-hand corner of the image:

idekCTF 2022: NMPZ (OSINT)

Is that an acute accent mark on top of the letter I (í)? Inferring from the shape of the other letters, it looks like this segment of the word spells out -íal, which many Spanish words end with. We can safely narrow this down to a Latin-American/Spanish-speaking country.

Let’s keep inferring from the flag. It currently says BReAK_m(E/e)_sPaC, so we can safely guess that the next country should start with e or E to continue the next likely word, “space.” idekCTF 2022: NMPZ (OSINT) Ecuador and idekCTF 2022: NMPZ (OSINT) El Salvador are the only Spanish-speaking countries that start with e or E, and I was able to narrow it down to Ecuador solely from the license plate of the car on the right, which looks like a taxi:

idekCTF 2022: NMPZ (OSINT)
Zoomed in plate

 

idekCTF 2022: NMPZ (OSINT)
Ecuadorian plate for commercial vehicles (taxis, buses)

 

Flag Progress: idek{BReAK_m(E/e)_sPaCE___}

15.png

idekCTF 2022: NMPZ (OSINT)

We are now presented with… some dilapidated, snowy houses! This will be difficult to narrow down.

Google Lens yielded nothing of use, but I did identify some Cyrillic writing on the dumpster to the left:

idekCTF 2022: NMPZ (OSINT)

When a Google search for a “KMA” trash company in Eastern Europe/Russia resulted in nothing relevant, I became absolutely stumped with this challenge.

The Guesswork Begins

This was around the time my team started to suspect the flag for the challenge read “break me spacebar”, which is a meme in the GeoGuessr community for how content creator Rainbolt hits his spacebar really loudly when guessing a location on the map:

idekCTF 2022: NMPZ (OSINT)

In accordance with the word “spacebar”, I narrowed the country down to the only Russian-speaking country (in terms of officially recognized languages) with starts with “B”: idekCTF 2022: NMPZ (OSINT) Belarus.

GeoGuessr Meta: Snow Coverage

So… Belarus was incorrect. However, it had a population under 10 million (similarly to the correct answer), meaning that the letter b was correct, regardless. The real country this image was taken in was idekCTF 2022: NMPZ (OSINT) Bulgaria, which a pro player would guess due to the typical snow coverage of Google Street View. According to this GeoGuessr Tips article:

Hungary is one of three European countries that can have similar, bleak, winter scenery with trees without leaves and snowfall beside the road. The other two countries are Bulgaria and small parts of Czechia.

Much of Bulgarian Street View was taken in winter and thus the trees are often without leaves and the Street View scenes in Bulgaria are often fairly bleak. Within Europe, Hungary and parts of Czechia have similar bleak wintery scenery. Bulgaria is one of the poorest countries in Europe and the Bulgarian roads reflect this fact. These roads are commonly crumbling and filled with cracks and holes.

So when you see a combination of dilapidation/bleakness and snowiness, Bulgaria, idekCTF 2022: NMPZ (OSINT) Hungary, or the idekCTF 2022: NMPZ (OSINT) Czech Republic would be your best guesses.

Flag Progress: idek{BReAK_m(E/e)_sPaCEb__}

16.png

idekCTF 2022: NMPZ (OSINT)

Beautiful hills and mountains… However, I genuinely have no idea where this could be!

Let’s start off with what little we have, and analyze the black and white chevron marker in the center of the image:

idekCTF 2022: NMPZ (OSINT)

I initially scoured the internet for countries which use this specific chevron and came across this map, courtesy of user u/isaacSW on the r/geoguessr subreddit:

idekCTF 2022: NMPZ (OSINT)

According to this map, the only countries which use white-on-black turn chevrons are the idekCTF 2022: NMPZ (OSINT) United Kingdom, idekCTF 2022: NMPZ (OSINT) Switzerland, idekCTF 2022: NMPZ (OSINT) Italy, idekCTF 2022: NMPZ (OSINT) Greece, idekCTF 2022: NMPZ (OSINT) Albania, and occasionally idekCTF 2022: NMPZ (OSINT) Spain.

Since this part of the flag says “spacebar”, the only choice which starts with “A” is Albania, so we will be using a for this character.

GeoGuessr Meta: Rifts in the Sky

After the challenge was completed, the author revealed something really interesting about this image… “rifts in the sky“:

Apparently, for countries like Albania, idekCTF 2022: NMPZ (OSINT) Montenegro, and idekCTF 2022: NMPZ (OSINT) Senegal, there are camera imperfections in the Photo Sphere which result in creases in the sky:

idekCTF 2022: NMPZ (OSINT)

We can see the rift itself in 16.png in the top center of the image:

idekCTF 2022: NMPZ (OSINT)

Little meta tricks and trivia like these are what make GeoGuessr such an interesting game.

Flag Progress: idek{BReAK_m(E/e)_sPaCEba_}

17.png

idekCTF 2022: NMPZ (OSINT)

To be honest, we didn’t solve this one at all - we just completed the sentence “break me spacebar” and guessed the last character was either R or r. Our original idekCTF 2022: NMPZ (OSINT) Cambodia guess didn’t make any sense, anyways 😛

GeoGuessr Meta: The Sakhalin Plant

The author of the challenge revealed that the last location was idekCTF 2022: NMPZ (OSINT) Russia, on the large island of Sakhalin north of idekCTF 2022: NMPZ (OSINT) Japan:

idekCTF 2022: NMPZ (OSINT)

The intended method of identifying the location was to analyze this patch of particular foliage in the image:

idekCTF 2022: NMPZ (OSINT)

This plant is called butterbur (Petasites japonicus, or simply “The Sakhalin Plant”), and it’s native to Sakhalin, Japan, idekCTF 2022: NMPZ (OSINT) China, and idekCTF 2022: NMPZ (OSINT)/idekCTF 2022: NMPZ (OSINT) Korea. Apparently, GeoGuessr pros can instantly identify this particular area of Russia from this plant alone!

Flag Progress: idek{BReAK_m(E/e)_sPaCEbaR}

Afterword

With this, the entire flag is revealed, and was successfully submitted with a lowercase e for the eighth character (the country was actually idekCTF 2022: NMPZ (OSINT) Eswatini); the flag is idek{BReAK_me_sPaCEbaR}.

This challenge would have not been possible if the flag wasn’t made up of recognizable English words. When we were approaching the end, we simply inferred that the last bit spelled “spacebar” - although we could have brute forced all 8 different capitalizations of “bar” (2^3) by the time we finished “sPaCE”, we felt like doing so would have detracted from the fun of the challenge.

Overall, I didn’t just learn more about GEOSINT-style challenges - I came to a greater understanding of how absolutely massive Earth is. I guess that’s part of the fun in playing GeoGuessr!

Here is a final table of all the countries (and what I guessed incorrectly):

Image Correct Country Population Flag Incorrect Guess
1.png idekCTF 2022: NMPZ (OSINT) Brazil 215,652,035 (2023) B
2.png idekCTF 2022: NMPZ (OSINT) Russia 146,980,061 (2022) R
3.png idekCTF 2022: NMPZ (OSINT) Estonia 1,331,796 (2022) e
4.png idekCTF 2022: NMPZ (OSINT) Australia 26,033,493 (2023) A
5.png idekCTF 2022: NMPZ (OSINT) Kenya 47,564,296 (2019) K idekCTF 2022: NMPZ (OSINT) Kazakhstan
6.png idekCTF 2022: NMPZ (OSINT) Iceland 385,230 (2022) _
7.png idekCTF 2022: NMPZ (OSINT) Mongolia 3,477,605 (2023) m
8.png idekCTF 2022: NMPZ (OSINT) Eswatini 1,202,000 (2021) e idekCTF 2022: NMPZ (OSINT) El Salvador
9.png idekCTF 2022: NMPZ (OSINT) Monaco 39,150 (2021) _
10.png idekCTF 2022: NMPZ (OSINT) Switzerland 8,789,726 (2022) s
11.png idekCTF 2022: NMPZ (OSINT) Poland 37,796,000 (2022) P
12.png idekCTF 2022: NMPZ (OSINT) Austria 9,090,868 (2022) a
13.png idekCTF 2022: NMPZ (OSINT) Canada 39,082,640 (2023) C
14.png idekCTF 2022: NMPZ (OSINT) Ecuador 18,146,244 (2023) E
15.png idekCTF 2022: NMPZ (OSINT) Bulgaria 6,520,314 (2021) b idekCTF 2022: NMPZ (OSINT) Belarus
16.png idekCTF 2022: NMPZ (OSINT) Albania 2,829,741 (2021) a
17.png idekCTF 2022: NMPZ (OSINT) Russia 146,980,061 (2022) R

 

Resources

Here are some of the websites I used throughout the challenge-solving process:

  • GeoHints - Provides images and key characteristics of every covered country in Google Street View
  • GeoTips - Lots of meta stuff (e.g. camera quality, cars vs. trekkers, etc.)
  • r/geoguessr - Useful community diagrams and wiki
  • The Digital Labyrinth - GeoGuessr - An absolutely massive blog post with everything you need to know about the game and its tricks
  • World License Plates - Scanned license plates of the majority of countries, including old and new designs
  • Google Lens - A powerful image recognition tool which can identify objects, text, landmarks, foliage, you name it and provide similar images

原文始发于ENSCRIBE:idekCTF 2022: NMPZ (OSINT)

版权声明:admin 发表于 2023年1月17日 下午11:33。
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