I’ve done several experiments with DNS, which has lead me over the last couple of years to develop a DNS resolver tool.
By no way is it a full fledged DNS server: it implements particular features that I’ve needed for different experiments I conducted.
It can serve files, facilitate exfiltration, do tracking, answer wildcard requests, do rcode testing and also simple resolving.
Upcoming blog posts will go into more details for some of these features.
Example of payload command: serving a file over DNS TXT records
dnsresolver_V0_0_1.zip (https)
MD5: 340C7324EB66EB4F567B38F374DD2564
SHA256: 56AD87585FDCC20C219BF4A27D9640ECD563E4155816990AB4E7B85AAFA5F047
Article Link: New Tool: dnsresolver.py | Didier Stevens