virtual machine technology

[mahzad]

Hi Enigma
I want to use this technology in both of my dll that are x86 and x64 . Is it possible?

Instruction set in this technology is RISC .Does not this particular type of instruction set facilitate reverse engineering ?

[Enigma]

Hi, yes, sure, you can use it, I gave you example, how to use it in another thread.

Starting from version 7.20, you can select the code to protect with virtual machine using markers, like this one:

Code: Select all

#include "enigma_ide.h"

int main()
{
    std::cout << "Before VM\n";

    EP_Marker("vm_risc_begin");
    
    // This code is protected with virtual machine - RISC
    std::cout << "It is inside VM marker!\n";
    
    EP_Marker("vm_risc_end");
    
    
    EP_Marker("vm_begin");
    
    // This code is protected with virtual machine - Classic
    std::cout << "It is inside VM marker!\n";
    
    EP_Marker("vm_end");    

    std::cout << "After VM\n";

}

If you are using some previous version of Enigma Protector, then for x64 version you should use same EP_Marker function to mark code to protect, for x86 need to use .inc files from EnigmaSDK, like that:

Code: Select all

int main()
{
    std::cout << "Before VM\n";

    #include "..\EnigmaSDK\VC\vm_risc_begin.inc"

    // This code is protected with virtual machine - RISC
    std::cout << "It is inside VM marker!\n";
    
    #include "..\EnigmaSDK\VC\vm_risc_end.inc"
    
    std::cout << "After VM\n";

}

[GameShield]

Instruction set in this technology is RISC .Does not this particular type of instruction set facilitate reverse engineering ?

RISC is not ISA.
RISC - just architectural approach to processor design (in our case it is a virtual processor). This does not reveal any information about the ISA of the virtual machine.