[Bro] Help enabling SMB protocol detection

[Will Hawkins]

Hello Bro Community!

First, let me apologize for asking a very dumb question. I have
sincerely tried to RTFM and I have done my research (Google, right/)
but cannot seem to find the answer. I am attempting to analyize a pcap
file that contains lots of SMB traffic using bro. I have a version of
bro with built-in SMB protocol support:

$ bro -n Bro::SMB
Bro::SMB - SMB analyzer (built-in)

That said, when I run

bro -C -r ../XXX.pcapng

I do not get a smb.log. That leads me to believe that SMB analysis is
not enabled. I've tried looking for bro files in /usr/share/protocols/
(etc) and cannot seem to find any. Editing a bro config file and
adding

@load base/protocols/smb

gives me an error on bro startup.

Can you tell me what stupid thing I am doing wrong? Thank you very
much for your help. Again, I am sorry that this is such a silly
question. I wish that I could answer it on my own!

Will