https://www.msn.com/en-us/money/technology/hacker-defies-the-odds-unlocks-3-million-bitcoin-wallet-locked-since-2013/ar-BB1nhoaKfind the complex password and unlock a wallet, the link is not in Italian but I will explain it to you in simple words
a guy had made his own nice cute little wallet with a password
he had taken the password and saved it on a truecrypt volume
everything is beautiful, everything is fantastic, but the volume somehow got ruined
goodbye money, complex password generated by software
then a hacker comes to help, first he says no and then he says yes to doing the job
the password generator was software that had a bug
they get to work on the 2013 version of this software, find the bug and manage to figure out HOW TO GENERATE passwords that are the same as at the time
they were not random
they start generating a mountain of passwords and in the end obviously thanks to the password generator bug they catch it
wallet unlocked, money back up
happy ending
there are some things to learn from this story, they are homework