internal class Injector
{
[DllImport("kernel32")]
public static extern IntPtr CreateRemoteThread(
IntPtr hProcess,
IntPtr lpThreadAttributes,
uint dwStackSize,
UIntPtr lpStartAddress,
IntPtr lpParameter,
uint dwCreationFlags,
out IntPtr lpThreadId
);
[DllImport("kernel32.dll")]
public static extern IntPtr OpenProcess(
UInt32 dwDesiredAccess,
Int32 bInheritHandle,
Int32 dwProcessId
);
[DllImport("kernel32.dll")]
public static extern Int32 CloseHandle(
IntPtr hObject
);
[DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool VirtualFreeEx(
IntPtr hProcess,
IntPtr lpAddress,
UIntPtr dwSize,
uint dwFreeType
);
[DllImport("kernel32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
public static extern UIntPtr GetProcAddress(
IntPtr hModule,
string procName
);
[DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
static extern IntPtr VirtualAllocEx(
IntPtr hProcess,
IntPtr lpAddress,
uint dwSize,
uint flAllocationType,
uint flProtect
);
[DllImport("kernel32.dll")]
static extern bool WriteProcessMemory(
IntPtr hProcess,
IntPtr lpBaseAddress,
string lpBuffer,
UIntPtr nSize,
out IntPtr lpNumberOfBytesWritten
);
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr GetModuleHandle(
string lpModuleName
);
[DllImport("kernel32", SetLastError = true, ExactSpelling = true)]
internal static extern Int32 WaitForSingleObject(
IntPtr handle,
Int32 milliseconds
);
public static void InjectDLL(IntPtr hProcess, String strDLLName)
{
IntPtr bytesout;
Int32 LenWrite = strDLLName.Length + 1;
IntPtr AllocMem = (IntPtr)VirtualAllocEx(hProcess, (IntPtr)null, (uint)LenWrite, 0x1000, 0x40);
WriteProcessMemory(hProcess, AllocMem, strDLLName, (UIntPtr)LenWrite, out bytesout);
UIntPtr Injector = (UIntPtr)GetProcAddress(GetModuleHandle("kernel32.dll"), "LoadLibraryA");
if (Injector == null)
{
MessageBox.Show("Injection Error! \n ");
return;
}
IntPtr hThread = (IntPtr)CreateRemoteThread(hProcess, (IntPtr)null, 0, Injector, AllocMem, 0, out bytesout);
if (hThread == null)
{
MessageBox.Show("Thread injection Failed");
return;
}
int Result = WaitForSingleObject(hThread, 10 * 1000);
if (Result == 0x00000080L || Result == 0x00000102L || Result == 0xFFFFFFFF)
{
MessageBox.Show("Thread 2 inject failed");
if (hThread != null)
{
CloseHandle(hThread);
}
return;
}
Thread.Sleep(1000);
VirtualFreeEx(hProcess, AllocMem, (UIntPtr)0, 0x8000);
if (hThread != null)
{
CloseHandle(hThread);
}
return;
}
}