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...detect if an Application is running within VMware?
Autor: Nico Bendlin
Homepage: http://www.bendlins.de/nico/delphi/
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Tip Rating (8):  
     


////////////////////////////////////////////////////////////////////////////////
//
//  Simple VMware check on i386
//
//    Note: There are plenty ways to detect VMware. This short version bases
//    on the fact that VMware intercepts IN instructions to port 0x5658 with
//    an magic value of 0x564D5868 in EAX. However, this is *NOT* officially
//    documented (used by VMware tools to communicate with the host via VM).
//
//    Because this might change in future versions - you should look out for
//    additional checks (e.g. hardware device IDs, BIOS informations, etc.).
//    Newer VMware BIOS has valid SMBIOS informations (you might use my BIOS
//    Helper unit to dump the ROM-BIOS (http://www.bendlins.de/nico/delphi).
//

function IsVMwarePresent(): LongBool; stdcall;  // platform;
begin
  
Result := False;
 {$IFDEF CPU386}
  
try
    asm
            
mov     eax, 564D5868h
            mov     ebx, 00000000h
            mov     ecx, 0000000Ah
            mov     edx, 00005658h
            in      eax, dx
            cmp     ebx, 564D5868h
            jne     @@exit
            mov     Result, True
    @@exit:
    end;
  except
    
Result := False;
  end;
{$ENDIF}
end;


 

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