full Hard Disc serial not getting windows7/vista in non admin mode

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First of all, I have little idea about this User authentication system of windows.

I am trying to get HDD serial number for the purpose of user authentication
it's working fine but in win 7 or vista if I run the exe without admin privilege
I am not getting the full serial number.only half of the number is coming.[as the hdd no is made of two part]

I want to know why it happens? or is there any way to get without admin privilege.

[if possible code in vc++ is preferable else code in java also ok for me]

please help me. :(

Posted 4-Dec-11 5:36am

shankha2010

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Abhinav S · Answer 1 · 2011-12-04T05:52:00

Solution 1

AFAIK, there is no workaround for getting the serial no without "running in admin mode".

Posted 4-Dec-11 5:52am

Abhinav S

shankha2010 · Answer 2 · 2011-12-05T02:39:00

Hi ,Thanks a lot for reply.But I have a little doubt.
As I don't have detailed knowledge on this. :(

1>why it is not allowing HDD serial no? can you give me any link regarding this?

2>I can get processor ID by the code below
even in admin mode without admin privilege.

CSS

void CPxMachineCode::GetProcessorSerialNumber(CString &csData,BOOL withSeparator)
{
DWORD   t,b; //top,middle,botttom
DWORD  serial[2];
  _asm
    {
        mov     eax,1  //programmer: I need a Service ?
			           //processor: what type baby?
					  //eax = 3 --> 
			 		  //eax: top 32 bits are the processor signature bits
		  	  			 

			 		   //programmer:this
        cpuid          //_emit 0x0f |cpuid mean this tow instruction
		               //_emit 0xa2 |instead of writing them 
					   //             
			  //mean:the sevice i want the processor serial number

	mov     t,eax 
    mov     b,edx 
    }
    serial[0] = t;
	serial[1] = b;

CString temp;
csData.Empty();
static char hex_chars[16] = {'0','1','2','3','4','5','6','7',
                                 '8','9','A','B','C','D','E','F'};
for (int dw_count = 1; dw_count>=0; dw_count--)
    {
        for (int bp=28; bp>=0; bp-=4)
        {
            DWORD nibble = (serial[dw_count] >> bp) & 0x0f;
            temp.Format("%c", hex_chars[nibble]);
			csData+=temp;
            if ((bp == 16) || ((bp == 0) && (dw_count!=0)) )
				if(withSeparator)csData+="-";
        }
    }

}

same for OS id.

C#

void CPxMachineCode::GetOSId(CString& csData)
{

unsigned long type=REG_SZ, size=1024;
char res[1024]="";
HKEY key;


if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion",NULL, KEY_READ, &key)==ERROR_SUCCESS)
    {
    RegQueryValueEx(key,
    "ProductID",// YOUR value
    NULL,&type,(LPBYTE)&res[0],&size);
    RegCloseKey(key);
    csData.Format("%s",res);
    }

}

why so?