Enable internet connection via console.

hack3rcon · 11-13-2018, 03:18 AM

Hello.
In a local network for enable internet connection we must enter an IP address in a browser and then enter username and password for enable internet connection. How about console?

Thank you.

Honest Abe · 11-13-2018, 03:45 AM

Try with a command line browser maybe ? Lynx/elinks/w3m etc.
Unsure about how they handle sessions/cookies etc though.

berndbausch · 11-13-2018, 05:22 AM

Do you have to do that from the system that will receive the IP address?

Text browsers as suggested by Honest Abe should work just fine. They do handle cookies and sessions, though not necessarily JavaScript.

There are even ASCII-art browsers such as https://www.ostechnix.com/browsh-a-m...ics-and-video/ (it requires Firefox; I haven't tried it).

Just by the way, if it's not a serial console, you should be able to run a GUI on it.

FlinchX · 11-14-2018, 10:08 AM

You may have a look at the request that's being send and just send the HTTP POST request with username and password using wget or curl. Login info is sensitive, so if it's a multiuser system, make sure you don't leak it to all users.

hack3rcon · 11-16-2018, 11:53 PM

Quote:

Originally Posted by Honest Abe

Try with a command line browser maybe ? Lynx/elinks/w3m etc.
Unsure about how they handle sessions/cookies etc though.

When I used

Code:

lynx https://www.google.com

then it showed me "Alert!: Unable to connect to remote host.".

hack3rcon · 11-16-2018, 11:56 PM

Quote:

Originally Posted by FlinchX

You may have a look at the request that's being send and just send the HTTP POST request with username and password using wget or curl. Login info is sensitive, so if it's a multiuser system, make sure you don't leak it to all users.

Can you show me some example?

Shadow_7 · 11-17-2018, 09:41 AM

If it's a public wifi, there's likely a captive portal. It's easiest to use a GUI browser to deal with those. Even on a pocketchip. Otherwise you'll likely need a text based browser with support for javascript and things. w3m, lynx, links, links2, elinks, several out there. Some support ssl, some support javascript, most pages are not designed for them though. A lot of times I have to change DNS after passing the captive portal for a useful internet connection. AKA /etc/resolv.conf

FlinchX · 11-18-2018, 11:48 AM

Quote:

Originally Posted by hack3rcon

Can you show me some example?

I mentioned a workflow that involves a few steps:

1. capturing the traffic when you're trying to authenticate to your ISP using a web browser

2. finding and understanding the HTTP POST request the browser sends

3. reproducing that with a command line HTTP client

which step is causing you trouble?

FlinchX · 11-18-2018, 11:49 AM

Quote:

Originally Posted by Shadow_7

A lot of times I have to change DNS after passing the captive portal for a useful internet connection. AKA /etc/resolv.conf

Just FYI, a neat hack is to use Tor as DNS server in such situations.