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Content Tagged with testing + JavaScript

Gareth Heyes has written a JavaScript protocol fuzzer which has the goal of "producing every variation of javascript execution from links."

If you check out the demo you see all of the options available to fuzz:

Number of characters - This inserts between 1 and 10 characters in the chosen position

Character position - The string position of the characters chosen. E.g. if you choose “0″ then the “j” will be replaced or appended.

Replace character - Simply replaces the character rather than add characters to the position.

Url encode - Urlencodes the vector before outputting the link.

HTML hex entity encode - Instead of output the character, it uses the HTML hex entity instead.

HTML dec entity encode - Instead of output the character, it uses the HTML decimal entity instead.

Semi-colons - Adds a semi-colon if HTML entities are used.

Random zero fill - Adds a bunch of random zeros if entities are used.

Start from - Is the starting character to begin the fuzz. E.g “0″ is null

He has also found interesting results in various browsers such as: jav�ascript: working, meaning that this would work: