Exemplo n.º 1
0
        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;
            }
        }
Exemplo n.º 2
0
 /// <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));
 }