Ctrl+F for wallet to find the following:

`$global:BtcWalletAddress = [System.Convert]::FromBase64String([System.Text.Encoding]::UTF8.GetBytes('bjMzaGE1bm96aXhlNnJyZzcxa2d3eWlubWt1c3gy'))

Base64 decode to get

n33ha5nozixe6rrg71kgwyinmkusx2

flag{n33ha5nozixe6rrg71kgwyinmkusx2}