Hex > String

procedure TForm1.Button1Click(Sender: TObject);
const Source: string = '4D 5A';
var S: string;
  t: Integer;
begin
  with TStringList.Create do
  try
    Text := StringReplace(Source, #32, #13#10, [rfReplaceAll]);
    S := '';
    for t := 0 to Count - 1 do
      S := S + Chr(StrToInt('$' + Strings[t]));
    ShowMessage(S);
  finally
    Free;
  end;
end;

Автор: Song

Взято из https://forum.sources.ru