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README.md

BFuzz

License

BFuzz is currently in beta. 

BFuzz is an input based fuzzer tool which take .html as an input, open's up your browser with a new instance and pass multiple testcases generated by domato which is present in recurve folder of BFuzz, more over BFuzz is an automation which performs same task repeatedly it doesn't mangle any testcases.

Run BFuzz

warmachine@ftw:~/BFuzz$ ./generate.sh
warmachine@ftw:~/BFuzz$ python BFuzz.py 
Enter the browser type:
 1: Chrome 
 2: Firefox
>>

Running python BFuzz.py will ask for option weather to fuzz Chrome or Firefox, however if selected 2 this will open firefox firefox --new-instance and randomly open any of the testcase from recurve create the logs on the terminal wait for 3 seconds again it will open firefox and the same process continue so on.

BFuzz is a small .py script which enable's to open browser run testcase for 12 seconds then close wait for 3 seconds and again follow the same process.

Domato 🍅

The testcase's in recurve are generated by domato generator.py contains the main script. It uses grammar.py as a library and contains additional helper code for DOM fuzzing.

grammar.py contains the generation engine that is mostly application-agnostic and can thus be used in other (i.e. non-DOM) generation-based fuzzers. As it can be used as a library, its usage is described in a separate section below.

.txt files contain grammar definitions. There are 3 main files, html.txt, css.txt and js.txt which contain HTML, CSS and JavaScript grammars, respectively. These root grammar files may include content from other files.

Bug showcase

Epiphany Web 3.28.1: CVE-2018-11396, new testcase identified for CVE-2018-11396
Mozilla Firefox: Stack based buffer overflow bug ID: 1456083 [Went DUPLICATE]

View in action

Browser Fuzzing via BFuzz

Contribution

Please feel free to PR.

ToDo

Handle Exeception, Add banner, Optimize Code, Mangle testcases.

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