public InjectPE(PELoader peLoader, string parameters)
{
////////////////////////////////////////////////////////////////////////////////
IntPtr lpAddress = IntPtr.Zero;
UInt32 dwSize = peLoader.sizeOfImage;
IntPtr lpBaseAddress = Unmanaged.VirtualAlloc(lpAddress, dwSize, Unmanaged.MEM_COMMIT, Unmanaged.PAGE_EXECUTE_READWRITE);
WriteOutputGood("Allocated Space For " + peLoader.sizeOfImage.ToString("X4") + " at " + lpBaseAddress.ToString("X4"));
////////////////////////////////////////////////////////////////////////////////
for (Int32 i = 0; i < peLoader.imageFileHeader.NumberOfSections; i++)
{
IntPtr lpBaseAddressSection = new IntPtr(lpBaseAddress.ToInt32() + peLoader.imageSectionHeaders[i].VirtualAddress);
UInt32 dwSizeSection = peLoader.imageSectionHeaders[i].SizeOfRawData;
IntPtr lpAllocatedAddress = Unmanaged.VirtualAlloc(lpBaseAddressSection, dwSizeSection, Unmanaged.MEM_COMMIT, Unmanaged.PAGE_EXECUTE_READWRITE);
Marshal.Copy(peLoader.imageBytes, (Int32)peLoader.imageSectionHeaders[i].PointerToRawData, lpAllocatedAddress, (Int32)peLoader.imageSectionHeaders[i].SizeOfRawData);
Console.WriteLine("Copied " + peLoader.imageSectionHeaders[i].Name + " to " + lpAllocatedAddress.ToString("X4"));
}
////////////////////////////////////////////////////////////////////////////////
IntPtr relocationTable = new IntPtr(lpBaseAddress.ToInt32() + peLoader.baseRelocationTableAddress);
Structs.IMAGE_BASE_RELOCATION relocationEntry = (Structs.IMAGE_BASE_RELOCATION)Marshal.PtrToStructure(relocationTable, typeof(Structs.IMAGE_BASE_RELOCATION));
Int32 sizeOfRelocationStruct = Marshal.SizeOf(typeof(Structs.IMAGE_BASE_RELOCATION));
Int32 sizeofNextBlock = (Int32)relocationEntry.SizeOfBlock;
IntPtr offset = relocationTable;
////////////////////////////////////////////////////////////////////////////////
while (true)
{
Structs.IMAGE_BASE_RELOCATION relocationNextEntry = new Structs.IMAGE_BASE_RELOCATION();
IntPtr lpNextRelocationEntry = new IntPtr(relocationTable.ToInt32() + (Int32)sizeofNextBlock);
relocationNextEntry = (Structs.IMAGE_BASE_RELOCATION)Marshal.PtrToStructure(lpNextRelocationEntry, typeof(Structs.IMAGE_BASE_RELOCATION));
IntPtr destinationAddress = new IntPtr(lpBaseAddress.ToInt32() + (Int32)relocationEntry.VirtualAdress);
////////////////////////////////////////////////////////////////////////////////
for (Int32 i = 0; i < (Int32)((relocationEntry.SizeOfBlock - sizeOfRelocationStruct) / 2); i++)
{
UInt16 value = (UInt16)Marshal.ReadInt16(offset, 8 + (2 * i));
UInt16 type = (UInt16)(value >> 12);
UInt16 fixup = (UInt16)(value & 0xfff);
switch (type)
{
case 0x0:
break;
case 0xA:
if (peLoader.is64Bit)
{
IntPtr patchAddress = new IntPtr(destinationAddress.ToInt64() + (Int32)fixup);
Int64 originalAddress = Marshal.ReadInt64(patchAddress);
Int64 delta64 = (Int64)(lpBaseAddress.ToInt64() - (Int64)peLoader.imageOptionalHeader64.ImageBase);
Marshal.WriteInt64(patchAddress, originalAddress + delta64);
}
else
{
IntPtr patchAddress = new IntPtr(destinationAddress.ToInt32() + (Int32)fixup);
Int32 originalAddress = Marshal.ReadInt32(patchAddress);
Int32 delta32 = (Int32)(lpBaseAddress.ToInt32() - (Int32)peLoader.imageOptionalHeader32.ImageBase);
Marshal.WriteInt32(patchAddress, originalAddress + delta32);
}
break;
}
}
offset = new IntPtr(relocationTable.ToInt32() + (int)sizeofNextBlock);
sizeofNextBlock += (int)relocationNextEntry.SizeOfBlock;
relocationEntry = relocationNextEntry;
//"The last entry is set to zero (NULL) to indicate the end of the table." - cool
if (0 == relocationNextEntry.SizeOfBlock)
{
break;
}
}
////////////////////////////////////////////////////////////////////////////////
//http://sandsprite.com/CodeStuff/Understanding_imports.html
////////////////////////////////////////////////////////////////////////////////
Int32 sizeOfStruct = Marshal.SizeOf(typeof(Structs._IMAGE_IMPORT_DIRECTORY));
Int32 multiplier = 0;
while (true)
{
Int32 dwImportTableAddressOffset = ((sizeOfStruct * multiplier++) + peLoader.importTableAddress);
IntPtr lpImportAddressTable = new IntPtr(lpBaseAddress.ToInt32() + dwImportTableAddressOffset);
Structs._IMAGE_IMPORT_DIRECTORY imageImportDirectory = (Structs._IMAGE_IMPORT_DIRECTORY)Marshal.PtrToStructure(lpImportAddressTable, typeof(Structs._IMAGE_IMPORT_DIRECTORY));
if (0 == imageImportDirectory.RvaImportAddressTable)
{
break;
}
////////////////////////////////////////////////////////////////////////////////
IntPtr dllNamePTR = new IntPtr(lpBaseAddress.ToInt32() + imageImportDirectory.RvaModuleName);
string dllName = Marshal.PtrToStringAnsi(dllNamePTR);
IntPtr hModule = Unmanaged.LoadLibrary(dllName);
WriteOutputGood("Loaded " + dllName + " at " + hModule.ToString("X4"));
////////////////////////////////////////////////////////////////////////////////
IntPtr lpRvaImportAddressTable = new IntPtr(lpBaseAddress.ToInt32() + imageImportDirectory.RvaImportAddressTable);
while (true)
{
Int32 dwRvaImportAddressTable = Marshal.ReadInt32(lpRvaImportAddressTable);
if (0 == dwRvaImportAddressTable)
{
break;
}
else
{
IntPtr lpDllFunctionName = (new IntPtr(lpBaseAddress.ToInt32() + dwRvaImportAddressTable + 2));
string dllFunctionName = Marshal.PtrToStringAnsi(lpDllFunctionName);
IntPtr functionAddress = Unmanaged.GetProcAddress(hModule, dllFunctionName);
Marshal.WriteInt64(lpRvaImportAddressTable, (Int64)functionAddress);
lpRvaImportAddressTable = new IntPtr(lpRvaImportAddressTable.ToInt32() + 8);
}
}
}
////////////////////////////////////////////////////////////////////////////////
string parameter = "";
IntPtr lpThreadAttributes = IntPtr.Zero;
UInt32 dwStackSize = 0;
Int32 dwStartAddress = lpBaseAddress.ToInt32() + peLoader.addressOfEntryPoint;
IntPtr lpStartAddress = new IntPtr(dwStartAddress);
IntPtr lpParameter = new IntPtr(Convert.ToInt32(parameter));
UInt32 dwCreationFlags = 0;
UInt32 lpThreadId = 0;
IntPtr hThread = Unmanaged.CreateThread(lpThreadAttributes, dwStackSize, lpStartAddress, lpParameter, dwCreationFlags, ref lpThreadId);
WriteOutputGood("Created thread " + hThread);
////////////////////////////////////////////////////////////////////////////////
Unmanaged.WaitForSingleObject(hThread, 0xFFFFFFFF);
}
public void execute()
{
////////////////////////////////////////////////////////////////////////////////
IntPtr lpBaseAddress = VirtualAllocExChecked(new IntPtr(0), peLoader.sizeOfImage);
WriteOutputNeutral("Iterating through " + peLoader.imageFileHeader.NumberOfSections + " Headers");
////////////////////////////////////////////////////////////////////////////////
for (Int32 i = 0; i < peLoader.imageFileHeader.NumberOfSections; i++)
{
IntPtr lpBaseAddressSection = new IntPtr(lpBaseAddress.ToInt64() + peLoader.imageSectionHeaders[i].VirtualAddress);
GCHandle pinnedArray = GCHandle.Alloc(peLoader.imageBytes, GCHandleType.Pinned);
IntPtr imageBytesPtr = new IntPtr((Int64)pinnedArray.AddrOfPinnedObject() + peLoader.imageSectionHeaders[i].PointerToRawData);
UInt32 dwSizeSection = peLoader.imageSectionHeaders[i].SizeOfRawData;
string sectionName = new string(peLoader.imageSectionHeaders[i].Name);
WriteProcessMemoryChecked(lpBaseAddressSection, imageBytesPtr, dwSizeSection, sectionName);
}
////////////////////////////////////////////////////////////////////////////////
IntPtr lpRelocationTable = new IntPtr(lpBaseAddress.ToInt64() + peLoader.baseRelocationTableAddress);
Structs.IMAGE_BASE_RELOCATION relocationEntry = PtrToStructureRemote <Structs.IMAGE_BASE_RELOCATION>(lpRelocationTable);
UInt32 imageSizeOfBaseRelocation = (UInt32)Marshal.SizeOf(typeof(Structs.IMAGE_BASE_RELOCATION));
Int32 sizeofNextBlock = (Int32)relocationEntry.SizeOfBlock;
IntPtr offset = lpRelocationTable;
////////////////////////////////////////////////////////////////////////////////
while (true)
{
IntPtr lpNextRelocationEntry = new IntPtr(lpRelocationTable.ToInt64() + (Int64)sizeofNextBlock);
Structs.IMAGE_BASE_RELOCATION relocationNextEntry = PtrToStructureRemote <Structs.IMAGE_BASE_RELOCATION>(lpNextRelocationEntry);
IntPtr destinationAddress = new IntPtr(lpBaseAddress.ToInt64() + (Int32)relocationEntry.VirtualAdress);
Int32 entries = (Int32)((relocationEntry.SizeOfBlock - imageSizeOfBaseRelocation) / 2);
////////////////////////////////////////////////////////////////////////////////
// Some magic from subtee
////////////////////////////////////////////////////////////////////////////////
for (Int32 i = 0; i < entries; i++)
{
UInt16 value = (UInt16)ReadInt16Remote(offset, 8 + (2 * i));
UInt16 type = (UInt16)(value >> 12);
UInt16 fixup = (UInt16)(value & 0xfff);
switch (type)
{
case 0x0:
break;
case 0xA:
IntPtr lpPatchAddress = new IntPtr(destinationAddress.ToInt64() + (Int32)fixup);
Int64 originalAddress = ReadInt64Remote(lpPatchAddress);
Int64 delta64 = (Int64)(lpBaseAddress.ToInt64() - (Int64)peLoader.imageOptionalHeader64.ImageBase);
IntPtr lpOriginalAddress = new IntPtr(originalAddress + delta64);
WriteInt64Remote(lpPatchAddress, originalAddress + delta64);
break;
}
}
offset = new IntPtr(lpRelocationTable.ToInt64() + (Int64)sizeofNextBlock);
sizeofNextBlock += (Int32)relocationNextEntry.SizeOfBlock;
relocationEntry = relocationNextEntry;
//"The last entry is set to zero (NULL) to indicate the end of the table." - cool
if (0 == relocationNextEntry.SizeOfBlock)
{
break;
}
}
////////////////////////////////////////////////////////////////////////////////
//http://sandsprite.com/CodeStuff/Understanding_imports.html
////////////////////////////////////////////////////////////////////////////////
Int32 sizeOfStruct = Marshal.SizeOf(typeof(Structs._IMAGE_IMPORT_DIRECTORY));
Int32 multiplier = 0;
Process localProcess = Process.GetCurrentProcess();
IntPtr lpLocalBaseAddress = localProcess.MainModule.BaseAddress;
Process remoteProcess = Process.GetProcessById((Int32)localProcess.Id);
IntPtr lpRemoteBaseAddress = remoteProcess.MainModule.BaseAddress;
while (true)
{
Int32 dwImportTableAddressOffset = ((sizeOfStruct * multiplier++) + peLoader.importTableAddress);
IntPtr lpImportAddressTable = new IntPtr(lpBaseAddress.ToInt64() + dwImportTableAddressOffset);
Structs._IMAGE_IMPORT_DIRECTORY imageImportDirectory = PtrToStructureRemote <Structs._IMAGE_IMPORT_DIRECTORY>(lpImportAddressTable);
if (0 == imageImportDirectory.RvaImportAddressTable)
{
break;
}
////////////////////////////////////////////////////////////////////////////////
IntPtr dllNamePTR = new IntPtr(lpBaseAddress.ToInt64() + imageImportDirectory.RvaModuleName);
string dllName = PtrToStringAnsiRemote(dllNamePTR).Replace("\0", "");
IntPtr lpLocalModuleAddress = Unmanaged.LoadLibrary(dllName);
IntPtr lpModuleBaseAddress = LoadLibraryRemote(dllName);
WaitForSingleObjectExRemote(lpModuleBaseAddress);
WriteOutputGood("Loaded " + dllName);
////////////////////////////////////////////////////////////////////////////////
IntPtr lpRvaImportAddressTable = new IntPtr(lpBaseAddress.ToInt64() + imageImportDirectory.RvaImportAddressTable);
while (true)
{
Int32 dwRvaImportAddressTable = PtrToInt32Remote(lpRvaImportAddressTable);
if (0 == dwRvaImportAddressTable)
{
break;
}
else
{
IntPtr lpDllFunctionName = (new IntPtr(lpBaseAddress.ToInt64() + dwRvaImportAddressTable + 2));
string dllFunctionName = PtrToStringAnsiRemote(lpDllFunctionName).Replace("\0", "");
IntPtr hModule = Unmanaged.GetModuleHandle(dllName);
IntPtr lpLocalFunctionAddress = Unmanaged.GetProcAddress(hModule, dllFunctionName);
IntPtr lpRelativeFunctionAddress = new IntPtr(lpLocalFunctionAddress.ToInt64() - lpLocalBaseAddress.ToInt64());
IntPtr lpFunctionAddress = new IntPtr(lpRemoteBaseAddress.ToInt64() + lpRelativeFunctionAddress.ToInt64());
WriteOutputGood("\tLoaded Function " + dllFunctionName);
//baseRemote.WriteProcessMemoryUnChecked(lpRvaImportAddressTable, lpFunctionAddress, sizeof(Int64),"");
WriteInt64Remote(lpRvaImportAddressTable, (Int64)lpFunctionAddress);
lpRvaImportAddressTable = new IntPtr(lpRvaImportAddressTable.ToInt64() + sizeof(Int64));
}
}
}
////////////////////////////////////////////////////////////////////////////////
Int64 dwStartAddress = lpBaseAddress.ToInt64() + peLoader.addressOfEntryPoint;
IntPtr lpStartAddress = new IntPtr(dwStartAddress);
IntPtr lpParameter = IntPtr.Zero;
CreateRemoteThreadChecked(lpStartAddress, lpParameter);
}