Advanced Techniques

• Use the Random (IPS/Filters evasion) DNS rebinding strategy option in the advanced options of the manager interface instead of the default First then second (default, conservative) if you suspect the presence of an IDS in one or more environments that sends several DNS requests to the attack server in addition to the actual target. This will ensure that the target will eventually obtain the required IP address, albeit a bit more slowly.
• Singularity responds with a DNS CNAME instead of an A record if one specifies "localhost" as the target instead of "127.0.0.1". This works around DNS filtering of responses containing "127.0.0.1" in some configurations. Some browsers appear to perform their own lookup upon reception of a CNAME record containing "localhost". Chrome populates its DNS cache with both "127.0.0.1" and "::1" in particular. Related: https://tools.ietf.org/html/draft-west-let-localhost-be-localhost-06.
• Similarly, specifying "0.0.0.0" on Mac and Linux, which corresponds to "this host, on any interface" on these platforms may work around some filters/controls.