Add ability to specify root-path favicon file via commandline parameter in interactsh-server

[mikedesu]

Please describe your feature request:

My idea is straight-forward:

I want to pass a cmdline flag like -favicon to interactsh-server in order to specify a local file to serve at the root path for any interactsh-client instances I spin up.

Describe the use case of this feature:

I think it would be interesting to serve a giant local file (1gb+) to a target that makes HTTP requests.

interactsh-server -domain mydomain.site -favicon giantfile

So when I run a local client, asfahfefkhqfreq.mydomain.site/favicon.ico would return the giantfile.

This kind of attack could render some headless browsers vulnerable to DDOS or resource exhaustion.

[ehsandeep]

@mikedesu there is already support for it - https://github.com/projectdiscovery/interactsh?tab=readme-ov-file#static-file-hosting

[mikedesu]

Serving from /s/ isn't good enough. I want to serve and track the favicon that sites load from the root path

[Mzack9999]

@mikedesu the file can already be served in the /s/ subpath or via dynamic response. Unfortunately without a strong use we prefer to keep the / serve the courtesy page.
Apart from DDOS detection, could you provide more context on the kind of use cases you have in mind?

[mikedesu]

When I said "serve at the root path", I meant /favicon.ico.

During hunting, I see requests for /favicon.ico to my instance, but because of the lack of this feature, I cannot serve anything back for that path.

Or am I missing something?