Silence

Description

You’re Bob. An old friend sent you a flag for a future FCSC a few years ago, before you lost touch. She reminds you that she is now part of the FCSC organization. She’s been able to set up this flag and offers to give it for you.

Problem: the flag has been left in an SMS backup in your SMS application of the time, Silence. You’ve completely forgotten the code you used, and only know that it was a 5-digit decimal code.

Can you find this flag and show Alice that you haven’t forgotten her?

Any resemblance to facts or characters that exist or have existed is purely coincidental.

No AI has been mistreated in the making of this challenge.