private void FinalizeSections64(IntPtr codeBase, IntPtr headers, IMAGE_DOS_HEADER dosHeader, IMAGE_NT_HEADERS64 header64)
{
var section = headers.ToStruct<IMAGE_SECTION_HEADER>((uint)(24 + dosHeader.e_lfanew + header64.FileHeader.SizeOfOptionalHeader));
for (int i = 0; i < header64.FileHeader.NumberOfSections; i++)
{
//Console.WriteLine("Finalize section " + Encoding.UTF8.GetString(section.Name));
if ((section.Characteristics & 0x02000000) > 0)
{
bool aa = Native.VirtualFree(codeBase.Add(section.VirtualAddress), (UIntPtr)section.SizeOfRawData, 0x4000);
continue;
}
int execute = (section.Characteristics & 0x20000000) != 0 ? 1 : 0;
int readable = (section.Characteristics & 0x40000000) != 0 ? 1 : 0;
int writeable = (section.Characteristics & 0x80000000) != 0 ? 1 : 0;
var protect = (uint)ProtectionFlags[execute][readable][writeable];
if ((section.Characteristics & 0x04000000) > 0) protect |= 0x200;
var size = (int)section.SizeOfRawData;
if (size == 0)
{
if ((section.Characteristics & 0x00000040) > 0)
{
size = (int)header64.OptionalHeader.SizeOfInitializedData;
}
else if ((section.Characteristics & 0x00000080) > 0)
{
size = (int)header64.OptionalHeader.SizeOfUninitializedData;
}
}
if (size > 0)
{
uint oldProtect;
IntPtr physicalAddress = codeBase.Add(section.VirtualAddress);
if (!Native.VirtualProtect(physicalAddress, section.SizeOfRawData, protect, out oldProtect))
{
Log.Error("Error protecting memory page of physical address 0x" + physicalAddress.ToString("X16"));
}
}
section = headers.ToStruct<IMAGE_SECTION_HEADER>((uint)((24 + dosHeader.e_lfanew + header64.FileHeader.SizeOfOptionalHeader) + (Marshal.SizeOf(typeof(IMAGE_SECTION_HEADER)) * (i + 1))));
}
}
private void CopySections64(byte[] data, IntPtr codeBase, IMAGE_NT_HEADERS64 header64, IntPtr headers, IMAGE_DOS_HEADER dosHeader)
{
IMAGE_SECTION_HEADER section = headers.ToStruct<IMAGE_SECTION_HEADER>(24 + dosHeader.e_lfanew + header64.FileHeader.SizeOfOptionalHeader);
for (int i = 0; i < header64.FileHeader.NumberOfSections; i++)
{
//ConsoleWindow.Pause("Section " + i + "/"+ (header64.FileHeader.NumberOfSections-1) + " (" + Encoding.UTF8.GetString(section.Name) + ") -> 0x"+ section.VirtualAddress.ToString("X16") + "...");
IntPtr dest;
if (section.SizeOfRawData == 0)
{
uint sectionSize = header64.OptionalHeader.SectionAlignment;
if (sectionSize > 0)
{
dest = Native.VirtualAlloc(codeBase.Add(section.VirtualAddress), sectionSize, MEM_COMMIT, PAGE_READWRITE);
Marshal.Copy(new byte[sectionSize + 1], 0, dest, (int)sectionSize);
//section.PhysicalAddress = (uint)dest;
//ConsoleWindow.WriteLine("section(NoRaw).PhysicalAddress=0x" + section.PhysicalAddress.ToString("X16")+", dest=0x" + dest.ToString("X16"));
//write = headers.Add(32 + dosHeader.e_lfanew + header64.FileHeader.SizeOfOptionalHeader + (Marshal.SizeOf(typeof(IMAGE_SECTION_HEADER)) * i));
//Marshal.WriteInt64(write, (long)dest);
}
}
else
{
dest = Native.VirtualAlloc(codeBase.Add(section.VirtualAddress), section.SizeOfRawData, MEM_COMMIT, PAGE_READWRITE);
Marshal.Copy(data, (int)section.PointerToRawData, dest, (int)section.SizeOfRawData);
//section.PhysicalAddress = (uint)dest;
//ConsoleWindow.WriteLine("section.PhysicalAddress=0x" + section.PhysicalAddress.ToString("X16") + ", dest=0x" + dest.ToString("X16"));
//write = headers.Add(32 + dosHeader.e_lfanew + header64.FileHeader.SizeOfOptionalHeader + (Marshal.SizeOf(typeof(IMAGE_SECTION_HEADER)) * i));
//Marshal.WriteInt64(write, (long)dest);
}
section = headers.ToStruct<IMAGE_SECTION_HEADER>(24 + dosHeader.e_lfanew + header64.FileHeader.SizeOfOptionalHeader + (Marshal.SizeOf(typeof(IMAGE_SECTION_HEADER)) * (i+1)));
}
}
public MemoryModule(byte[] bytes)
{
IntPtr address = IntPtr.Zero;
IntPtr dllEntryPoint = IntPtr.Zero;
ProtectionFlags[0] = new int[2][];
ProtectionFlags[1] = new int[2][];
ProtectionFlags[0][0] = new int[2];
ProtectionFlags[0][1] = new int[2];
ProtectionFlags[1][0] = new int[2];
ProtectionFlags[1][1] = new int[2];
ProtectionFlags[0][0][0] = 0x01;
ProtectionFlags[0][0][1] = 0x08;
ProtectionFlags[0][1][0] = 0x02;
ProtectionFlags[0][1][1] = 0x04;
ProtectionFlags[1][0][0] = 0x10;
ProtectionFlags[1][0][1] = 0x80;
ProtectionFlags[1][1][0] = 0x20;
ProtectionFlags[1][1][1] = 0x40;
IMAGE_DOS_HEADER dosHeader = bytes.ToStruct<IMAGE_DOS_HEADER>();
IMAGE_NT_HEADERS32 ntHeader = bytes.ToStruct<IMAGE_NT_HEADERS32>((uint)dosHeader.e_lfanew);
Is64Bit = (ntHeader.OptionalHeader.Magic == 0x020B || ntHeader.FileHeader.Machine == 0x8664);
#region [ Load x64 Machine Dynamic Link Library ]
if (Is64Bit)
{
IMAGE_NT_HEADERS64 header64 = bytes.ToStruct<IMAGE_NT_HEADERS64>((uint)dosHeader.e_lfanew);
address = Native.VirtualAlloc((IntPtr)header64.OptionalHeader.ImageBase, header64.OptionalHeader.SizeOfImage, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
if (address == IntPtr.Zero) address = Native.VirtualAlloc(address, header64.OptionalHeader.SizeOfImage, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
if (address != IntPtr.Zero)
{
//Log.Console("Memory Address: 0x" + address.ToString("X16"));
IntPtr headers = Native.VirtualAlloc(address, header64.OptionalHeader.SizeOfHeaders, MEM_COMMIT, PAGE_READWRITE);
Marshal.Copy(bytes, 0, headers, (int)(dosHeader.e_lfanew + header64.OptionalHeader.SizeOfHeaders));
CopySections64(bytes, address, header64, headers, dosHeader);
int moduleCount = GetModuleCount(address, header64.OptionalHeader.ImportTable);
module64 = new MEMORYMODULE64
{
codeBase = address,
numModules = moduleCount,
modules = Marshal.AllocHGlobal(moduleCount * sizeof(int)),
initialized = 0
};
module64.headers = headers.ToStruct<IMAGE_NT_HEADERS64>((uint)dosHeader.e_lfanew);
module64.headers.OptionalHeader.ImageBase = (ulong)address;
ulong locationDelta = (ulong)address - header64.OptionalHeader.ImageBase;
if (locationDelta != 0) PerformBaseRelocation64(locationDelta);
BuildImportTable64(module64);
FinalizeSections64(address, headers, dosHeader, header64);
dllEntryPoint = address.Add(header64.OptionalHeader.AddressOfEntryPoint);
}
}
#endregion
#region [ Load x86 Machine Dynamic Link Library ]
else
{
IMAGE_NT_HEADERS32 header32 = bytes.ToStruct<IMAGE_NT_HEADERS32>((uint)dosHeader.e_lfanew);
address = Native.VirtualAlloc((IntPtr)header32.OptionalHeader.ImageBase, header32.OptionalHeader.SizeOfImage, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
if (address == IntPtr.Zero) address = Native.VirtualAlloc(address, header32.OptionalHeader.SizeOfImage, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
if (address != IntPtr.Zero)
{
//Log.Console("Memory Address: 0x" + address.ToString("X16"));
IntPtr headers = Native.VirtualAlloc(address, header32.OptionalHeader.SizeOfHeaders, MEM_COMMIT, PAGE_READWRITE);
Marshal.Copy(bytes, 0, headers, (int)(dosHeader.e_lfanew + header32.OptionalHeader.SizeOfHeaders));
CopySections32(bytes, address, header32, headers, dosHeader);
int moduleCount = GetModuleCount(address, header32.OptionalHeader.ImportTable);
module32 = new MEMORYMODULE32
{
codeBase = address,
numModules = 0,
modules = new IntPtr(0),
initialized = 0
};
module32.headers = headers.ToStruct<IMAGE_NT_HEADERS32>((uint)dosHeader.e_lfanew);
module32.headers.OptionalHeader.ImageBase = (uint)address;
ulong locationDelta = (ulong)address - header32.OptionalHeader.ImageBase;
if (locationDelta != 0) PerformBaseRelocation32(locationDelta);
BuildImportTable32(module32);
FinalizeSections32(address, headers, dosHeader, header32);
dllEntryPoint = address.Add(header32.OptionalHeader.AddressOfEntryPoint);
}
}
#endregion
//Log.Console("DllEntryPoint: 0x" + dllEntryPoint.ToString("X16"));
DllEntry dllEntry = (DllEntry)Marshal.GetDelegateForFunctionPointer(dllEntryPoint, typeof(DllEntry));
dllEntry(address, 1, IntPtr.Zero);
}
