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This chapter is from the book


Fuzzing frameworks provide a flexible, reusable, and homogenous development environment for bug hunters and QA teams.. After going through the list of available fuzzing frameworks in this chapter, it should be fairly obvious that there is not a clear winner. All of them provide a reasonable framework to build on, but your selection of a specific framework will generally be driven by the target to be fuzzed and familiarity, or lack thereof, with the programming language used by a particular framework. The Adobe Macromedia Shockwave Flash's SWF file format case study illustrates that frameworks remain an immature technology and you are still likely to encounter situations where none of the existing frameworks are capable of meeting your needs. As demonstrated, it might on occasion thus be necessary to develop a custom fuzzing solution, leveraging reusable components developed for the task at hand. Hopefully this case study was thought provoking and will provide some guidance when you encounter your own exotic fuzzing tasks.

In the final section of this chapter we introduced and explored a new fuzzing framework, Sulley. Various aspects of this fuzzing framework were dissected to clearly demonstrate the advancements made by this endeavor. Sulley is the latest in an increasingly long line of fuzzing frameworks and is actively maintained by the authors of this book. Check http://www.fuzzing.org for ongoing updates, further documentation, and up-to-date examples.

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