[ADMIRAL]

Originally Posted by BLACKFIRE69

yes.

[Files]
Source: "pckr.dll"; Flags: dontcopy;

{Code]
var Init: Boolean;

function PInit(const Name, Password: PAnsiChar; Debug: Boolean):Boolean;
  external 'PInit@{tmp}\pckr.dll stdcall delayload';
procedure PExtractFile(const FName, Dest: PAnsiChar);
  external 'PExtractFile@{tmp}\pckr.dll stdcall delayload';

function InitializeSetup(): Boolean;
var
  S:string;
begin
  S:=ExpandConstant('{src}');
  ExtractTemporaryFile('pckr.dll');
  Init:=PInit(S+'\Data.cab','PASSWORD',True);
  if Init then begin
  PExtractFile('Script.iss',S+'\Script_EXTRACTED.iss');
  end;

  if FileExists(S+'\Script_EXTRACTED.iss') then MsgBox('Script.iss extracted.',mbInformation,MB_OK);
  Result:=False;
end;

copy data.cab to Output folder and try. (Requires the password which you used)

Thanks Friend