Hi,

I am testing a ASP.NET application that uses viewstate and eventvalidation.

I want to use a custom tool written in Ruby which uses the net/http library to authenticate to the application.

This is what the tool is doing:

1. GET /login.aspx
2. POST /login.aspx

1) Get login.aspx and parse response.
2) Send post request to login.aspx with eventvalidation and viewstate from 1.

The above results in an error.

Is there something obvious I am missing here? Most black box web app scanners deal with the application fine. I just can't replicate a valid request on my own.

I have tried URL encoding the viewstate and eventvalidation. Ensured that they are being sent correctly. Sending all cookies with 2 that 1 sets.

Thanks in advance,
Ryan