Original description
Welcome to the Silent Records challenge!
A strange DNS server started leaking fragments of a hidden message.
You are given access to an authoritative DNS server hosting the domain silent_records.ctf.
Somewhere in its records, a flag is hidden . but not in plain sight.
Investigate the DNS records carefully and reconstruct the message.
No files are required for this challenge. The DNS server is reachable at [historical address withheld]
Original hints
Hints are preserved as part of the record. Point costs refer to the original competition.
Hint 15 PTS ORIGINALLY
Start by querying TXT records of the domain itself.
Hint 210 PTS ORIGINALLY
SRV records can help you discover which TXT records to query next. Try querying _frags._tcp.silent_records.ctf
Hint 325 PTS ORIGINALLY
Each fragment hostname contains a TXT record with a base64-encoded piece of the flag.
Hint 450 PTS ORIGINALLY
Decode the base64 fragments and concatenate them in order of SRV priority.