dfuzz - automated daemon fuzzer
dfuzz - automatic daemon configuration fuzzer. Rather than being a fuzzer itself, dfuzz is a wrapper for other simple fuzzers solving few common flaws which makes automated testing a bit difficult.
Although its primary targets are configuration files, it is possible to use dfuzz to fuzz any input files.
- The main problems dfuzz solves are:
- alpha versions of fuzzers - most of the fuzzers are just alpha versions which are no longer developed or maintained
- common format - no need to understand how to use every single underlying fuzzer
- customizable monitoring and automatic error analysis
- straightforward specification of what to test and which file to supply to the target
- combination of mutation and generation of fuzzed files
- python >= 2.6
- fuzzer (zzuf, autodafe, …)
- gdb, valgrind (both are optional)
- independent of underlying fuzzer
- highly configurable
- built to be extendible
- automation friendly
- zzuf (mutation)
- autodafe (generation)
- plain (debugging purposes)
- install requirements
- install dfuzz (for example easy_install dfuzz)
- create a working directory
- supply fuzz.conf file (sample follows)
- according to the modules you want to use, create mut or gen directory in your working directory and supply a file to fuzz or a template to use
- run dfuzz -d -o name_of_the_working_directory
- observe output
- if everything is fine remove the -d and -o options and run the command again
- check the samples directory created in your working directory
- use included incident_viewer to browser incidents if there are any
Complete documentation in docs directory.
Sample fuzz.conf file
[global] binary=libvirtd args=-f FUZZED_FILE --verbose threads = 1 timeout = 2 generation = 0 mutation = 1 combination = 0 [generation] modules = dfuzz.gen.autodafe priority = high [mutation] modules = dfuzz.mut.zzuf; dfuzz.mut.plain priority = high [combination] modules = dfuzz.comb.simple priority = low
In it’s simplest form, dfuzz can be used as a zzuf wrapper with enhanced detection and reporting capabilities.
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