The Real Crypto Master

Description

It's common sense that "crypto" stands for "cryptocurrency". With my masterclass, you will learn everything you need to be like me!

You only need to find me :-D

Solution

Here is a possible solution to this challenge.

First step: understanding the situation

A file containing some expenses is received. After a thorough review of the expenses.csv metadata (through the .DS_Store), the subject is identified: @bepifrico. This looks like a username.

Second step: finding @bepifrico online

Using a manual search or an automated tool, Bepi's X profile can be found here.

Third step: retrieving the first part of the flag

In a recent post, it is said that Bepi wanted to to the usual stream, but X set streams a premium feature and he switched the streaming on YouTube. A link to his YouTube Channel is found. Bepi's profile is transmitting a live recording: this. The message states the fist part of the flag and tells that the second part is easy to find with "the right amount of geoguessing and a great amount of nerd culture". The only geoguessable post is the most recent. Looking for the image on Google Images, it's discovered the name of the artist: aldam

Fourth step: retrieve the second part of the flag

Looking at aldam's Instagram profile, the right location is found: "Multicinema Modernissimo" in Naples, Italy. From bepi's profile, some more hints are given: on the 30th day of July, he was waiting to go to that cinema, surely to watch a film that "starts in two hours" and regards a superhero.

In July 2025, two films revolved around superheros stories: "The Fantastic 4: First Steps" and James Gunn's "Superman" so an intuition could be made.

To prove the intuition it is possible to check on the cinema page if there's a show that starts in two hours and two minutes (as stated in the second post of the thread) from 17:13 CEST (the timezone is given by the position and the day of the year).

A snapshot of Multicinema's ticket page is available on Wayback Machine here

From there it's possible to know that the film bepi has watched is "I Fantastici 4: Gli Inizi".

From bepi's profile it's easy to see that he also wanted to write a review, so another step is necessary. The main free movie review portal is Letterboxd, so it's a good starting point. (Please note that if you tried an automated scan in the first step you've probably already found this profile).

From bepi's Letterboxd profile here it's possible to retrieve the last part of the flag.