Indian Fuzzy Language

A grammar based fuzz testing language. It is a generic framework, it can be used to fuzz test any network protocols.

1. IFL High Level Design

1.1 IFL Inputs

IFL takes XML file as a grammar to PUT (Protocol Under Test). It expects the XML configuration to explain about each and every fields of a protocol message, with detailed list of valid and invalid values. It uses this XML configurations to generate a systematic fuzzing messages.

1.2 IFL Fuzz Generators

IFL contains various types of Fuzz message generators which are listed below. - Default Value with Zero: Generates msg with the default value for all the fields of a msg, based on the default value specified in XML configuration. And keeps zero if no default value is specified. - Default Value with Random: Same as above, expcept it keeps random values for the field which does not contain default value on the XML configuration. - Sample Based: For generating fuzz message it takes a valid message as input along with XML configuration.

2. IFL Low Level Design

2.1 Protocol Msg Format

IFL retrieves Protocol msg format from XML configuration given as input, and converts to a Tree data structure to maintain all message fields and its properties. It uses libexpat to parse the XML configuration file.