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Windows: add more checks to correctly identify Microsoft original bootloader.

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This commit is contained in:
Mounir IDRASSI
2019-10-20 17:05:30 +02:00
parent cca08e1ed5
commit 31a87c2e5f
1 changed files with 24 additions and 3 deletions
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21
src/Common/BootEncryption.cpp
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@@ -3203,12 +3203,22 @@ namespace VeraCrypt
{
// check that it is not bootmgfw.efi
if (0 != _wcsicmp (loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi"))
{
// look for bootmgfw.efi identifiant string
EfiBootInst.GetFileSize(loaderPath.c_str(), loaderSize);
std::vector<byte> bootLoaderBuf ((size_t) loaderSize);
EfiBootInst.ReadFile(loaderPath.c_str(), &bootLoaderBuf[0], (DWORD) loaderSize);
// look for bootmgfw.efi identifiant string
if (BufferHasPattern (bootLoaderBuf.data (), (size_t) loaderSize, g_szMsBootString, strlen (g_szMsBootString)))
{
bFound = true;
EfiBootInst.RenameFile(loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw_ms.vc", TRUE);
}
}
}
}
if (!bFound)
throw ErrorException ("WINDOWS_EFI_BOOT_LOADER_MISSING", SRC_POS);
@@ -4306,12 +4316,23 @@ namespace VeraCrypt
if ( (0 != _wcsicmp (loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw_ms.vc"))
&& (0 != _wcsicmp (loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi"))
)
{
const char* g_szMsBootString = "bootmgfw.pdb";
unsigned __int64 loaderSize = 0;
EfiBootInst.GetFileSize(loaderPath.c_str(), loaderSize);
std::vector<byte> bootLoaderBuf ((size_t) loaderSize);
EfiBootInst.ReadFile(loaderPath.c_str(), &bootLoaderBuf[0], (DWORD) loaderSize);
// look for bootmgfw.efi identifiant string
if (BufferHasPattern (bootLoaderBuf.data (), (size_t) loaderSize, g_szMsBootString, strlen (g_szMsBootString)))
{
EfiBootInst.RenameFile(loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi", TRUE);
}
}
}
}
}
EfiBootInst.DelFile(L"\\DcsBoot.efi");