Host-Extract - Host/IP Pattern Extractor Tool !
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This little ruby script tries to extract all IP/Host patterns in page response of a given URL and JavaScript/CSS files of that URL. With it, you can quickly identify internal IPs/Hostnames, development IPs/ports, cdn, load balancers, additional attack entries related to your target that are revealed in inline js, css, html comment areas and js/css files. This is unlike web crawler which looks for new links only in anchor tags (<a) or the like. In some cases, host-extract may give you false positives when there are some words like - main-site_ver_10.2.1.3.swf. With -v option, you can ask the tool to output html view-source snippets for each IP/Domain extracted. This will shorten your manual analysis time. Please go to for more info. Download/Update
svn co host-extract Tutorial Wiki
========== Sebastien Damaye from has prepared a thorough host-extract
tutorial with real-world famous web sites.

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