ESC8 Relay with forced authentication option

[Plumatester]

I've had success in the past exploiting ESC8, but I recently came across an Apache Solr instance that is vulnerable to SMB coercion. When setting up the relay command for ESC8 nothing ever comes through.

The instance attempts to connect to my machine without credentials if I run the following command:

impacket-smbserver -smb2support share share

However when I force authentication (which certipy has no option built-in to do this), I get the machine hash multiple times:

impacket-smbserver -smb2support -username foo -password foo share share

I can also automatically receive the hash with Responder.

Any way Certipy could be modified to force authentication from SMB coercion?