MultiRelay

Responder MultiRelay is a Python 3 SMB NTLMv1/v2 relay component. It accepts SMB and NTLM-authenticated HTTP/WebDAV traffic on TCP ports 445, 80, and 3128 and relays the NTLM handshake to a specified SMB target. It requires root and is used with Responder's name-resolution poisoners when needed, with Responder's own SMB and HTTP listeners disabled to avoid port conflicts. When the relayed account can access the target's C$ and IPC$ administrative shares, MultiRelay can open an interactive SMB shell or run a one-shot command through remote service execution. MultiRelay performs the relay; it does not itself poison LLMNR or NBT-NS, and its SMB relay path rejects Kerberos authentication.