fusil 1.4
Fuzzing framework
Fusil is a Python library used to write fuzzing programs. It helps to start process with a prepared environment (limit memory, environment variables, redirect stdout, etc.), start network client or server, and create mangled files. Fusil has many probes to detect program crash: watch process exit code, watch process stdout and syslog for text patterns (eg. "segmentation fault"), watch session duration, watch cpu usage (process and system load), etc.
Fusil is based on a multi-agent system architecture. It computes a session score used to guess fuzzing parameters like number of injected errors to input files.
Available fuzzing projects: ClamAV, Firefox (contains an HTTP server), gettext, gstreamer, identify, libc_env, libc_printf, libexif, linux_syscall, mplayer, php, poppler, vim, xterm.
Website: http://bitbucket.org/haypo/fusil/wiki/Home
Usage
Fusil is a library and a set of fuzzers called "fusil-...". To run a fuzzer, call it by its name. Example:
$ fusil-gettext Fusil version 0.9.1 -- GNU GPL v2 http://bitbucket.org/haypo/fusil/wiki/Home (...) [0][session 13] Start session [0][session 13] ------------------------------------------------------------ [0][session 13] PID: 16989 [0][session 13] Signal: SIGSEGV [0][session 13] Invalid read from 0x0c1086e0 [0][session 13] - instruction: CMP EDX, [EAX] [0][session 13] - mapping: 0x0c1086e0 is not mapped in memory [0][session 13] - register eax=0x0c1086e0 [0][session 13] - register edx=0x00000019 [0][session 13] ------------------------------------------------------------ [0][session 13] End of session: score=100.0%, duration=3.806 second (...) Success 1/1! Project done: 13 sessions in 5.4 seconds (414.5 ms per session), total 5.9 seconds, aggresssivity: 19.0% Total: 1 success Keep non-empty directory: /home/haypo/prog/SVN/fusil/trunk/run-3
Features
Why using Fusil instead your own hand made C script?
- Fusil limits child process environment: limit memory, use timeout, make sure that process is killed on session end
- Fusil waits until system load is load before starting a fuzzing session
- Fusil creates a session directory used as the process current working directory and Fusil only creates files in this directory (and not in /tmp)
- Fusil stores all actions in fusil.log but also session.log for all actions related of a session
- Fusil has multiple available probes to compute session score: guess if a sessions is a succes or not
- Fusil redirects process output to a file and searchs bug text patterns in the stdout/stderr (Fusil contains many text patterns to detect crashes and problems)
Installation
Read INSTALL documentation file.
Documentation
Read doc/index.rst: documentation index.
Changelog
Fusil 1.4 (2011-02-16)
- Python 3 support
- fusil-python:
- improve function listing all Python modules: use sys.builtin_module_names and pkgutil.iter_modules()
- blacklist more modules, classes and functions
Fusil 1.3.2 (2010-01-09)
- replay.py: set sys.path to ease the usage of Fusil without installing it
- Fix fusil-gettext: ignore strace errors in locateMO()
- fusil-python:
- hide Python warnings
- listAllModules() includes builtin modules
- new option --only-c to test only modules written in C
- fix memory leak: unload tested modules
- fix getFunctions(): use also isclass() to detect classes
- Disable Fusil process maximum memory limit
Fusil 1.3.1 (2009-11-09)
- fusil-python: autodiscover all modules instead of using a static list of modules, catch any exception when loading a module, only fuzz public functions (use module.__all__)
- FileWatch: ignore duplicate parts on session rename
- Remove session name parts duplicate (eg. "pickle-error-error" => "picke-error")
- replay.py: don't redirect stdin to /dev/null if --ptrace is used
- CPU probe: set max duration from 3 to 10 seconds (and rename the session on success)
Fusil 1.3 (2009-09-18)
- Create fusil-gimp
- Remove charset from WriteCode: use builtin open() instead codecs.open() because files created by open() are much faster
- Optimize FileWatch: don't recompile patterns at each session
- fusil now depends on python-ptrace 0.6
- Don't use close_fds argument of subprocess.Popen() on Windows
- Fix configuration reader: normal_calm_load, normal_calm_sleep, slow_calm_load, slow_calm_sleep keys global options are float, not integer
- Project website moved to http://bitbucket.org/haypo/fusil/wiki/Home
- FileWatch uses the pattern to rename the session
Fusil 1.2.1 (2009-02-06)
- Fix mangle agent of the Image Magick fuzzer
- Fix AttachProcessPID() probe: stop the probe at process exit
Fusil 1.2 (2009-02-04)
User visible changes:
- Fusil now requires Python 2.5
- Documentation: write an index (index.rst) and an user guide (usage.rst)
- Replay script: copy HOME environment for GDB and catch setuid() error
- fusil-firefox: support more file formats (bmp, gif, ico, png, svg), create --test command line option, write the HTML page into index.html file
- fusil-python: write errors to stderr (instead of stdout) to avoid unicode error (especially with Python3)
- FileWatch: rename the session with "long_output" if the program wrote more than max_nbline lines
- fusil-python: blacklist posix.fork() to avoid false positive
- If the process is killed by a signal, rename the session using the signal name (already worked if the debugger was disabled)
Developer changes:
- MangleAgent supports multiple input files
- Create DummyMangle: agent with MangleFile API but don't touch file content to test the fuzzer
- Network: close() method of NetworkClient and ServerClient use shutdown(SHUT_RDWR)
- NetworkServer uses a backlog of 5 clients for socket.listen() (instead of 1)
Bugfixes:
- Fix Directory.rmtree() and replay script for Python 3.0
- Fix ServerClient.sendBytes(): use socket.send() result to get the next data offset
Fusil 1.1 (2008-10-22)
- User visible changes:
- replay.py: ask confirmation if the fuzzer will not be running under a different user or as root
- Even with --force-unsafe, show safety warning if the fuzzer is running as the root user
- Close files for child processes (close_fds=True)
- Fix directory.rmtree() for Python 3.0 final
- Developer changes:
- Create IntegerRangeGenerator in fusil.unicode_generator
- Create EnvVarIntegerRange in fusil.process.env
- Create fusil-wizzard fuzzer
- Write timestamp in session.log
- Add session() method to ProjectAgent
- Add NAME attribute to a fuzzer, reused to choose the project directory name
- Bugfixes:
- Fix Debugger.processSignal(): use the process agent to send the message (session_rename) since the debugger agent may be disabled
- Fix replay.py: quote gdb arguments escape quote and antislash characters (eg. "text="Hello\n".")
- replay.py uses /dev/null for stdin as Fusil does
- FileWatch: open file in binary mode to use bytes in Python3
Fusil 1.0 final (2008-09-13)
Visible changes:
- Create fusil-zzuf fuzzer (use the zzuf library)
- Create fusil-vlc fuzzer (VLC media player)
- For each session, generate a Python script (replay.py) to replay the session. The script can run the target in gdb, valgrind or gdb.py (python-ptrace debugger), with many options (--user, --limit, etc.)
- Create --force-unsafe option, like --unsafe without the confirmation
- CreateProcess is now a probe (with a score): if the debugger catchs a fatal signal, the session stops
- Always use a null device as stdin for child processes to avoid blocking the fuzzer if the process reads stdin (eg. call getchar())
- Write the created process identifier in the logs
Developer:
- Create EnvVarIntegerRange: environment variable with an integer value in a fixed range
- Changes to get a minimal Windows support: disable "change user/group" feature on Windows; remove log file before removing the project directory; use ":NUL" instead of /dev/null for null input/output
- On setupProject() error, make sure that the project is cleaned
- Close stdout files (input and output) at process exit (fix needed by Windows)
- Rename long2raw() to uint2bytes(), and bytes2long() to bytes2uint()
- Normalize score that make sure that a probe score is in range [-1; +1] and so that score*weight is in range[-weight; +weight]
- CodeC: remove method lines(), writeCode() is renamed writeIntoFile(), use unicode strings (instead of byte strings)
- Remove StdoutFile class, code merged in CreateProcess
| File | Type | Py Version | Uploaded on | Size | # downloads |
|---|---|---|---|---|---|
| fusil-1.4.tar.gz (md5) | Source | 2011-02-16 | 130KB | 441 | |
- Author: Victor Stinner
- Home Page: http://bitbucket.org/haypo/fusil/wiki/Home
- Download URL: http://bitbucket.org/haypo/fusil/wiki/Home
- License: GNU GPL v2
- Categories
- Package Index Owner: haypo
- DOAP record: fusil-1.4.xml
