Re: testing webapp - socks and http proxy question

[Rogan Dawes <lists () dawes za net>]

learn lids wrote:
> hello everybody,
>
> moderators : sorry about the cross-post, but i thoght this question
> is relevant to all these 3 lists.
>
> i am trying to test a web app which is accessible by only a socks
> proxy. so i want to redirect the http traffic through the socks proxy
> to access th webapp. the setup is:
>
> browser {OUT 127.0.0.1:8080} ---> burp proxy --> socks proxy to
> webapp
>
> i am not sure how to make burp talk to the socks proxy. i used
> proxychains but i am not able to make it work.
>
> any suggestions are much appreciated. any other alternate methods
> would be nice.
>
> thank you, learner

The work-in-progress OWASP Proxy library (and sample app) supports
upstream and downstream SOCKS proxies. i.e. it can act as a SOCKS proxy,
and it can connect through an upstream SOCKS proxy. It can also act as a
regular HTTP proxy, allowing:

[browser] --(HTTP Proxy)--> [burp] --(HTTP Proxy)--> [OWASP Proxy]
--(SOCKS)--> [socks proxy]--> [server]

This is probably not ideal, though.

You *may* be able to convince burp to use an upstream SOCKS proxy by
setting the appropriate Java environment variables. See:

<http://java.sun.com/javase/6/docs/technotes/guides/net/proxies.html>

I don't think that this supports authentication to the upstream SOCKS
Proxy, though. If you need upstream authentication, you may need to hack
something together using JSOCKS, for example.

Rogan