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plugin for js reverse engineering http://blog.imaginea.com/fireflow
Latest commit ae1d0d2
Oct 31, 2014
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A simple trace utility to reverse engineer js code flows. Coded as a firebug extension. Demo at http://www.youtube.com/embed/42nR1GpzYp8 Addon at https://addons.mozilla.org/en-US/firefox/addon/fireflow/ How to use To reverse engineer a action, follow these simple steps 1. Open Firebug, navigate to “FlowTrace” 2. Press Start in the extension menu bar 3. Perform the actual action on the actual page. 4. Press Stop once you see the result of the action A trace of all js functions invoked during this time would be displayed. The trace contains information about the script source, the line number and number of invocations. All the nodes in the trace are linked to their actual source. How it works This plugin hooks into the firefox debugging framework and registers for method callbacks. Each method call is thus recorded and then represented in this tree format. The current version excludes all anonymous functions and all functions coming from *-min.js sources. Difference between this and profiling While profiling is about getting a list of all invocations irrespective of the order, this tool gives a in-order execution chain. Future Work 1. Instead of using arbitrary filters, am planning to work on exposing include and exclude rules to the end user. Feel free to request any features or enhance it.