public void Hook(IntPtr toHook, IntPtr ourFunc, int len, bool _64bit = true)
{
int oldProtect;
MemoryApi.VirtualProtectEx(ProcessHandle, toHook, len, MemoryApi.PAGE_READWRITE, out oldProtect);
var emptyBytes = new byte[len];
for (int i = 0; i < len; i++)
{
emptyBytes[i] = 0x90;
}
WriteBytes(toHook, emptyBytes);
byte[] byte_jump_delta = BitConverter.GetBytes((ulong)ourFunc - (ulong)toHook - (ulong)5);
byte[] managedArray = new byte[5];
managedArray[0] = 0xE9;
for (int i = 0; i < 4; i++)
{
managedArray[i + 1] = byte_jump_delta[i];
}
WriteBytes(toHook, managedArray);
MemoryApi.VirtualProtectEx(ProcessHandle, toHook, len, oldProtect, out oldProtect);
}
public void WriteBytes(IntPtr MemoryAddress, byte[] Buffer)
{
int oldProtect;
MemoryApi.VirtualProtectEx(ProcessHandle, (IntPtr)MemoryAddress, Buffer.Length, MemoryApi.PAGE_READWRITE, out oldProtect);
IntPtr ptrBytesWritten;
MemoryApi.WriteProcessMemory(ProcessHandle, MemoryAddress, Buffer, Buffer.Length, out ptrBytesWritten);
int oldProtect2;
MemoryApi.VirtualProtectEx(ProcessHandle, (IntPtr)MemoryAddress, Buffer.Length, oldProtect, out oldProtect2);
}