/// <summary>
/// Injects a dll into a process by creating a remote thread on LoadLibrary.
/// </summary>
/// <param name="_hProcess">Handle to the process into which dll will be injected.</param>
/// <param name="_szDllPath">Full path of the dll that will be injected.</param>
/// <returns>Returns the base address of the injected dll on success, zero on failure.</returns>
public static IntPtr InjectDllCreateThread(IntPtr _hProcess, string _szDllPath)
{
if (_hProcess == IntPtr.Zero)
{
throw new ArgumentNullException("_hProcess");
}
if (_szDllPath.Length == 0)
{
throw new ArgumentNullException("_szDllPath");
}
if (!_szDllPath.Contains("\\"))
{
_szDllPath = Path.GetFullPath(_szDllPath);
}
if (!File.Exists(_szDllPath))
{
throw new ArgumentException("DLL not found.", "_szDllPath");
}
var dwBaseAddress = IntPtr.Zero;
IntPtr lpLoadLibrary;
IntPtr lpDll;
IntPtr hThread, threadId;
var hKernel32 = OnyxNative.GetModuleHandle(_hProcess, "kernel32.dll");
lpLoadLibrary =
(IntPtr)(hKernel32.ToInt64() + OnyxNative.GetExportedFunctionRVA(OnyxNative.GetModuleFileNameEx(_hProcess, hKernel32), "LoadLibraryW").ToInt64());
if (lpLoadLibrary != IntPtr.Zero)
{
lpDll = OnyxMemory.AllocateMemory(_hProcess);
if (lpDll != IntPtr.Zero)
{
if (OnyxMemory.Write(_hProcess, lpDll, _szDllPath))
{
//wait for thread handle to have signaled state
hThread = OnyxNative.CreateRemoteThread(
_hProcess,
IntPtr.Zero,
0,
lpLoadLibrary,
lpDll,
ThreadFlags.THREAD_EXECUTE_IMMEDIATELY,
out threadId);
//wait for thread handle to have signaled state
//exit code will be equal to the base address of the dll
if (OnyxNative.WaitForSingleObject(hThread, 5000) == WaitValues.WAIT_OBJECT_0)
{
OnyxNative.GetExitCodeThread(hThread, out dwBaseAddress);
if (dwBaseAddress == IntPtr.Zero)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
OnyxNative.CloseHandle(hThread);
}
OnyxMemory.FreeMemory(_hProcess, lpDll);
}
}
return(dwBaseAddress);
}
//ExecuteInDefaultAppDomain(_processId, Path.GetDirectoryName(Application.ExecutablePath) + "\\" + DLLName, "Onyx.DomainManager.EntryPoint", "Main", "");
/// <summary>
/// Loads CLR and target assembly into process address space
/// </summary>
/// <param name="_processId">Target process</param>
/// <param name="_assemblyPath">Target assembly</param>
/// <param name="_typeName">Type that contains method, that will be executed</param>
/// <param name="_methodName">Method, that will be executed upon load</param>
/// <param name="_args">Arguments, that will be passed to method</param>
public static void InjectAndExecuteInDefaultAppDomain(Int32 _processId, String _assemblyPath, String _typeName, String _methodName, String _args)
{
if (_assemblyPath == null)
{
throw new ArgumentNullException(nameof(_assemblyPath));
}
if (_typeName == null)
{
throw new ArgumentNullException(nameof(_typeName));
}
if (_methodName == null)
{
throw new ArgumentNullException(nameof(_methodName));
}
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] Injecting assembly '{0}'({1}.{2}, args '{3}') into process {4}...", _assemblyPath, _typeName, _methodName, _args ?? "null", _processId);
var is64BitProcess = OnyxNative.Is64bitProcess(_processId);
var clrDllPath = is64BitProcess ? MSCOREE_DLL_NAME_64 : MSCOREE_DLL_NAME_32;
try
{
using (var onyx = new Onyx(_processId))
{
// проверяем, не загружена ли уже CLR
var hRemoteClr = OnyxNative.GetModuleHandle(onyx.Memory.OpenedProcess, MSCOREE_DLL_NAME);
if (hRemoteClr != IntPtr.Zero)
{
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] MSCOREE.dll({1}) is already exists in process {0}...", _processId, clrDllPath);
}
else
{
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] Loading MSCOREE.dll({1}) into process {0}...", _processId, clrDllPath);
InjectDllCreateThread(onyx.Memory.OpenedProcess, clrDllPath);
hRemoteClr = OnyxNative.GetModuleHandle(onyx.Memory.OpenedProcess, MSCOREE_DLL_NAME);
if (hRemoteClr == IntPtr.Zero)
{
throw new ApplicationException(String.Format("Could not load dll '{0}' into process {1}", clrDllPath, _processId));
}
}
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] MSCOREE.dll({1}) handle - 0x{0:X8}", hRemoteClr.ToInt64(), clrDllPath);
var clrModuleName = OnyxNative.GetModuleFileNameEx(onyx.Memory.OpenedProcess, hRemoteClr);
var bindToRuntimeFuncRva = OnyxNative.GetExportedFunctionRVA(clrModuleName, "CorBindToRuntimeEx");
var lpCorBindToRuntimeEx = (IntPtr)(hRemoteClr.ToInt64() + bindToRuntimeFuncRva.ToInt64());
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] CorBindToRuntimeEx ptr -> 0x{0:X8}", lpCorBindToRuntimeEx.ToInt64());
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] Allocating code caves...");
var lpCLSID_CLRRuntimeHost = onyx.Memory.AllocateMemory((uint)(CLSID_CLRRuntimeHost.Length * 4));
var lpIID_ICLRRuntimeHost = onyx.Memory.AllocateMemory((uint)IID_ICLRRuntimeHost.Length);
var lpClrHost = onyx.Memory.AllocateMemory(0x4);
var lpdwRet = onyx.Memory.AllocateMemory(0x4);
var lpCodeCave = onyx.Memory.AllocateMemory(0x256);
var lpAssemblyPath = onyx.Memory.AllocateMemory((uint)_assemblyPath.Length + 1);
var lpTypeName = onyx.Memory.AllocateMemory((uint)_typeName.Length + 1);
var lpMethodName = onyx.Memory.AllocateMemory((uint)_methodName.Length + 1);
var lpArgs = onyx.Memory.AllocateMemory((uint)_args.Length + 1);
var lpBuildFlavor = onyx.Memory.AllocateMemory((uint)BuildFlavor.Length * 2 + 2);
var lpFrameworkVersion = onyx.Memory.AllocateMemory((uint)FrameworkVersion.Length * 2 + 1);
onyx.Memory.Write(lpBuildFlavor, BuildFlavor);
onyx.Memory.Write(lpAssemblyPath, _assemblyPath);
onyx.Memory.Write(lpTypeName, _typeName);
onyx.Memory.Write(lpMethodName, _methodName);
onyx.Memory.Write(lpArgs, _args);
onyx.Memory.Write(lpCLSID_CLRRuntimeHost, CLSID_CLRRuntimeHost);
onyx.Memory.Write(lpIID_ICLRRuntimeHost, IID_ICLRRuntimeHost);
onyx.Memory.Write(lpFrameworkVersion, FrameworkVersion);
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] Preparing ASM code...");
var fasm = new RemoteFasm();
fasm.AddLine("use32");
fasm.AddLine("push {0}", lpClrHost.ToInt64());
fasm.AddLine("push {0}", lpIID_ICLRRuntimeHost.ToInt64());
fasm.AddLine("push {0}", lpCLSID_CLRRuntimeHost.ToInt64());
fasm.AddLine("push 0");
fasm.AddLine("push {0}", lpBuildFlavor.ToInt64());
fasm.AddLine("push {0}", lpFrameworkVersion.ToInt64());
fasm.AddLine("mov eax, {0}", lpCorBindToRuntimeEx.ToInt64());
fasm.AddLine("call eax"); // CorBindToRuntimeEx ()
fasm.AddLine("mov eax, [{0}]", lpClrHost.ToInt64());
fasm.AddLine("mov ecx, [eax]");
fasm.AddLine("mov edx, [ecx+0xC]");
fasm.AddLine("push eax");
fasm.AddLine("call edx"); // ClrHost ()
fasm.AddLine("push {0}", lpdwRet.ToInt64());
fasm.AddLine("push {0}", lpArgs.ToInt64());
fasm.AddLine("push {0}", lpMethodName.ToInt64());
fasm.AddLine("push {0}", lpTypeName.ToInt64());
fasm.AddLine("push {0}", lpAssemblyPath.ToInt64());
fasm.AddLine("mov eax, [{0}]", lpClrHost.ToInt64());
fasm.AddLine("mov ecx, [eax]");
fasm.AddLine("push eax");
fasm.AddLine("mov eax, [ecx+0x2C]");
fasm.AddLine("call eax");
fasm.AddLine("retn");
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] Injecting and executing ASM code...");
fasm.InjectAndExecute(onyx.Memory.OpenedProcess, lpCodeCave);
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] Disposing code caves...");
onyx.Memory.FreeMemory(lpCLSID_CLRRuntimeHost);
onyx.Memory.FreeMemory(lpIID_ICLRRuntimeHost);
onyx.Memory.FreeMemory(lpClrHost);
onyx.Memory.FreeMemory(lpdwRet);
onyx.Memory.FreeMemory(lpCodeCave);
onyx.Memory.FreeMemory(lpAssemblyPath);
onyx.Memory.FreeMemory(lpTypeName);
onyx.Memory.FreeMemory(lpMethodName);
onyx.Memory.FreeMemory(lpArgs);
onyx.Memory.FreeMemory(lpBuildFlavor);
onyx.Memory.FreeMemory(lpFrameworkVersion);
Logger.InfoFormat("[InjectAndExecuteInDefaultAppDomain] Assembly sussessfully injected");
}
}
catch (Exception ex)
{
throw new ApplicationException(String.Format("Could not inject assembly '{0}'({1}.{2}, args '{3}') into process {4}", _assemblyPath, _typeName, _methodName, _args ?? "null", _processId), ex);
}
}