Запуск dll или exe из L2PacketHack

//sample.c
#define UNICODE
#include <windows.h>
#define DLL_EXPORT __declspec(dllexport) __stdcall
void DLL_EXPORT FromClient(wchar_t* pck)
{
    if (pck[0]==0x38 && pck[1]==0x78 && pck[3]==0x78)
        MessageBox(0,L"medved",L"preved",0);
}
BOOL WINAPI DllMain(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpvReserved)
{
return TRUE;
}

//samplescript.txt
var
 lib:Integer;

procedure Init;
begin
 lib:=loadLibrary('sample.dll');
end;

procedure Free;
begin
 FreeLibrary(lib);
end;

begin
if FromClient then
 begin
  CallFunction(lib,'FromClient',1,[pck]);
 end;
end.

примерно вот так :D