Monday, October 27, 2014

A Better Hex Editor for Mac OSX

It does not take many hours of editing binary files with a basic hex editor for you to ask yourself the question, is there a better tool?  So with that question in mind, I went looking and after a few hours found a great tool for Mac OSX, it is called "Synalyze It Pro" from

Now there are a lot of really neat features, which you can view on the App Store or at the author's web site.  But the one I will call out is the ability to write custom grammars for the binary files you work with and color code them based on what they are.

Now I work with a lot of PCAP files, and this tool has proven to be very help.  I am going to share the grammar file I wrote called libpcap.grammar with a GPLv3 license.

Here is a screen shot of my grammar file working on a PCAP file.

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