source: zzuf/trunk/README @ 1512

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21. About Zzuf
3
4Zzuf is a transparent application input fuzzer. It works by intercepting
5file operations and changing random bits in the program's input. Zzuf's
6behaviour is deterministic, making it easy to reproduce bugs.
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92. Example
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11Fuzz the input of the "cat" program using default settings:
12
13  # zzuf cat /etc/motd
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15Fuzz 1% of the input bits of the "cat" program using seed 94324:
16
17  # zzuf -s 94324 -r 0.01 cat /etc/motd
18
19Fuzz the input of the "convert" program, using file foo.jpeg as the original
20input and restricting fuzzing to filenames matching the regular expression
21"foo[.]jpeg" (because convert will also open its own configuration files and
22we do not want zzuf to fuzz them):
23
24  # zzuf -i 'foo[.]jpeg' convert -- foo.jpeg -format tga /dev/null
25
26Fuzz the input of VLC, using file movie.avi as the original input, and
27generate fuzzy-movie.avi which is a file that can be fed to VLC to reproduce
28the behaviour without using zzuf:
29
30  # zzuf -s 87423 -r 0.01 vlc movie.avi
31
32  # zzuf -s 87423 -r 0.01 cp movie.avi fuzzy-movie.avi
33  # vlc fuzzy-movie.avi
34
35Fuzz mplayer's input with seeds 0 to 9999, launching up to 3 simultaneous
36child processes and killing mplayer if it takes more than one minute to read
37the file:
38
39  # zzuf -q -s 0:10000 -F 3 -T 60 -r 0.02 -i movie.avi \
40         mplayer movie.avi -- -benchmark -vo null -fps 1000
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