In a previous post we talked about taking over the .na, .co.ao, and .it.ao domain extensions with varying levels of DNS trickery. In that writeup we examined the threat model of compromising a top level domain (TLD) and what some avenues would look like for an attacker to accomplish this goal. One of the fairly simple methods that was brought up was to register a domain name of one of the TLD’s authoritative nameservers. Since a TLD can have authoritative nameservers at arbitrary domain nam...