Modulate and Demodulate a radio signal

We require an expert in Software Defined Radio and GNU Radio in order to help us. What we want to do? We have a signal from a remote control, we want to demodulate it to obtain a binary sequence and then, by applying the reverse process to the sequence, to obtain the initial input. Preferably, in a GNU Radio flowgraph. We also have HackRF devices to test if the process is corect.