New Target type - ASN

[c3101]

Add support for providing an ASN as the target type, so BBOT fetches all domains on a certain ASN.

[TheTechromancer]

We've wanted to add this feature for a while. The problem is that in order to make it work, you need a reliable API where you can fetch the information, that ideally doesn't require an API key.

ProjectDiscovery has an API for this, which is used by asnmap, but it requires an API key.

Most likely this would involve spinning up a small rest API in rust or go, and putting it behind cloudflare with some decent rate limits. A daily CI/CD pipeline would download the latest database.

With that in place, we could safely add the feature to core BBOT.

[TheTechromancer]

I wonder if @Sh4d0wHunt3rX might have a trick for this?

[Sh4d0wHunt3rX]

Unfortunately, I have not done this way ever. Not sure if it helps, but this is how I do it. I use

https://bgp.he.net/dns/
https://bgpview.io/

To get the asn of the target. then for different purposes I use dnsx and tlsx on those asns to get info from them, then reverse whois. Finally I get a list of domains which I select some of them and add to bbot.

But if we can add asn to bbot as target, that would be great.