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SI CAPTCHA Anti-Spam
Reverse Engineering + Salting (2 posts)

  1. jibbius
    Member
    Posted 1 year ago #

    Hi,
    Thanks for the great plugin.

    I'm looking to write some browser-automation test scripts to test my site.
    One issue I have, is that I need to test:

    • The CAPTCHA is working
    • The process behind the CAPTCHA is working

    I've noticed that the CAPTCHA code is determined by:

    securimage_show.php?si_form_id=reg&prefix=RandomNumbersAndLetters

    Obviously, I get a different CAPTCHA code, based on the prefix (presumably the algorithm is salted also?).

    Two questions:
    - Is it possible for me to figure out what the CAPTCHA is, based on RandomNumbersAndLetters and a known Salt?
    - How do I change the Salt? Does this plugin use one of the values in wp-config?

    (You could probably list these on the FAQ)

    Thanks in advance.

    http://wordpress.org/extend/plugins/si-captcha-for-wordpress/

  2. jibbius
    Member
    Posted 1 year ago #

    I realise I'm making assumptions with the above.

    My real question(s) -

    • Is it possible to reverse engineer this, somehow, for the purpose of testing my own site?
    • Alternatively, perhaps I can force the CAPTCHA to have a known value (by adding a new action somewhere)?

    Any ideas/background on how the code works would be awesome.
    Thanks :)

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