misc/NM~~PZ~~ - easy
Last updated
Last updated
In this challenge, idek provide you a website contains of random locations, and a file named "nmpz1.tar.gz".
After I scrolled down the page, there's this one instruction box.
Okay, so, what's the "SSS" anyway ? What about the "shares" ? And what do you mean by solving 9/10 challenges ? Where do I solve it ? Those are the key questions.
In the instruction box you'll already notice that it's a link, and this is the link:
The SSS in our scenario stands for "Shamirs Secret Sharing".
The most easy-understanding way to definite this algorithm is that: You have to find all of the keys in order to reveal the secret. And we call the keys "shares".
You get the shares by solving the challenges. What challenges ? They're in the random locations that idek already provided in the website. In each locations, you got the name from idek i.e. "red light", "fedex", "on_the_beach". (The names I provide aren't the real names they used in the challenges.) Once you clicked in the location, the page provide you a kind of google street view, but you can't move. You can only zoom in or zoom out. The way to solve each challenges is that you have to pin the location of that google street view ( in the range of 50 metres ). If correct, then you get 1 share. You have to solve 9 problems to pass the challenge.
Assume that you finished searching for all the shares already. The next step is to get the flag for this challenge. Remember the file that idek provided us ? That's where we get the flag.
Let's decompress the file.
You get the "attachments" directory with a python file named "flag.py" inside. Let's try to run the file.
Now input all the shares you got into the program. It will return the flag as the output. And this is how I solved my first ever CTF.
