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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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27
src/Common/BootEncryption.cpp
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@@ -3204,8 +3204,18 @@ namespace VeraCrypt
// check that it is not bootmgfw.efi // check that it is not bootmgfw.efi
if (0 != _wcsicmp (loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi")) if (0 != _wcsicmp (loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi"))
{ {
bFound = true; // look for bootmgfw.efi identifiant string
EfiBootInst.RenameFile(loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw_ms.vc", TRUE); 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);
}
} }
} }
} }
@@ -4307,7 +4317,18 @@ namespace VeraCrypt
&& (0 != _wcsicmp (loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi")) && (0 != _wcsicmp (loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi"))
) )
{ {
EfiBootInst.RenameFile(loaderPath.c_str(), L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi", TRUE); 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);
}
} }
} }
} }