I have disasembled Aura.prg with a public domain disasembler that I happened to come across, and included the whole disk for Aura 1.0, Here is the disassembler output, disassembled from steem on an STX file of Aura 1.0
I have found the protection but its all over the place in the file, look for T13488,D0
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Call Spy Visits Spy BBS at Telnet 126.96.36.199
port 1989. BBS is up and running , but not all of the bugs ironed out.