22 March 2010 | 8,695 views

skipfish – Automated Web Application Security Reconnaissance Tool

Don't let your data go over to the Dark Side!

The safety of the Internet is of paramount importance to Google, and helping web developers build secure, reliable web applications is an important part of the equation. To advance this goal, Google has released projects such as ratproxy, a passive security assessment tool.

The latest is they have announced a new tool called skipfish – a free, open source, fully automated, active web application security reconnaissance tool.

Key Features

  • High speed: written in pure C, with highly optimized HTTP handling and a minimal CPU footprint, the tool easily achieves 2000 requests per second with responsive targets.
  • Ease of use: the tool features heuristics to support a variety of quirky web frameworks and mixed-technology sites, with automatic learning capabilities, on-the-fly wordlist creation, and form autocompletion.
  • Cutting-edge security logic: we incorporated high quality, low false positive, differential security checks capable of spotting a range of subtle flaws, including blind injection vectors.

The tool is believed to support Linux, FreeBSD 7.0+, MacOS X, and Windows (Cygwin) environments.

You can download skipfish here:


Or read more here.


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3 Responses to “skipfish – Automated Web Application Security Reconnaissance Tool”

  1. Sherif 22 March 2010 at 10:57 am Permalink

    I’ve been playing with this program for quite a while and it picked issues nikto or nessus did not.

    you’ll need libidn, get it from http://www.gnu.org/software/libidn/ and configure & make

    The bare minimum syntax will be:
    ./skipfish -o /foo/OutputFolder -W dictionaries/standard.wl http://YourWebServer

    By the way, I LOVE YOUR BLOG! , really, keep it up!

  2. Amr Ali 25 March 2010 at 1:30 pm Permalink

    Yep I’ve faced the same dependency issue, however all I had to do was “apt-get install libidn11”. Once compiled and I started playing with it, its a very well done package.

    And yes I’m a huge fan too, I have been stalking this blog for over 4 years now.

  3. Darknet 26 March 2010 at 5:06 am Permalink

    Thanks for the feedback guys, I’m sure it’ll be useful for other readers and thanks for following us! Keep on reading and I’ll keep on writing :)