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Programs that can be fuzzed are those that take input files, usually binary files or unusual formats. (Think mp3, multimedia, images, etc.)
Programs that can be fuzzed are those that take input files, usually binary files or unusual formats. (Think mp3, multimedia, images, etc.)
We'll be fuzzing [[John the Ripper]] to understand how AFL works.

Revision as of 05:27, 2 April 2016

Fuzzer

https://necurity.co.uk/netsec/2015/03/30/Fun-With-AFL.html#sthash.h9Aurb7C.dpbs

About

American fuzzy lop is a program for fuzzing inputs. It is very sophisticated and can be instrumented with a binary to do very targeted fuzzing.

Installing

Get the latest version, and run make to make it:

$ wget http://lcamtuf.coredump.cx/afl/releases/afl-latest.tgz 
$ tar -xvf afl-latest.tgz cd afl-latest.tgz
$ cd afl-*
$ make 
$ make install

Success!

root@morpheus:~/codes/afl-2.10b# which afl-fuzz
/usr/local/bin/afl-fuzz

Fuzzing a Program

Programs that can be fuzzed are those that take input files, usually binary files or unusual formats. (Think mp3, multimedia, images, etc.)

We'll be fuzzing John the Ripper to understand how AFL works.