void CopySections(byte[] data, IMAGE_NT_HEADERS32* ntHeader)
{
if (data == null)
throw new ArgumentNullException("data");
if (ntHeader->Signature != NativeDeclarations.IMAGE_NT_SIGNATURE)
throw new BadImageFormatException("Inavlid PE-Header");
uint size;
int* dest;
IMAGE_SECTION_HEADER* section = NativeDeclarations.IMAGE_FIRST_SECTION(this.headers);
for (int i = 0; i < this.headers->FileHeader.NumberOfSections; i++, section++)
{
if (section->SizeOfRawData == 0)
{
// section doesn't contain data in the dll itself, but may define
// uninitialized data
size = ntHeader->OptionalHeader.SectionAlignment;
if (size > 0)
{
dest = (int*)NativeDeclarations.VirtualAlloc(
new IntPtr(this.codeBase + section->VirtualAddress),
size,
AllocationType.COMMIT,
MemoryProtection.READWRITE).ToPointer();
section->PhysicalAddress = (uint)dest;
NativeDeclarations.MemSet(new IntPtr(dest), 0, new IntPtr(size));
}
continue;
}
dest = (int*)NativeDeclarations.VirtualAlloc(
new IntPtr((int)this.codeBase + section->VirtualAddress),
section->SizeOfRawData,
AllocationType.COMMIT,
MemoryProtection.READWRITE).ToPointer();
Marshal.Copy(data, (int)section->PointerToRawData, new IntPtr(dest), (int)section->SizeOfRawData);
section->PhysicalAddress = (uint)dest;
}
}
/// <summary>
/// Equivalent to the IMAGE_FIRST_SECTION macro
/// </summary>
/// <param name="ntheader">Pointer to to ntheader</param>
/// <returns>Pointer to the first section</returns>
public static IMAGE_SECTION_HEADER* IMAGE_FIRST_SECTION(IMAGE_NT_HEADERS32* ntheader)
{
return ((IMAGE_SECTION_HEADER*)((int)ntheader +
Marshal.OffsetOf(typeof(IMAGE_NT_HEADERS32), "OptionalHeader").ToInt32() +
ntheader->FileHeader.SizeOfOptionalHeader));
}