Winapi fuzzer to help Wine project in creating better Windows "emulator"

Related tags

Emulators Win32Fuzzer
Overview

Win32 Fuzzer

This repository contains fuzzer to test Windows API functions(Win32 API).

I created it to help Wine to better mimic Windows OS and allow running more Windows software on Linux.

I think that 32 bit binaries

Looks that currently tests - 4466 functions from all 10540 parsed.

This project works fine with windows-rs 0.33.0, so it may require rewrite to support newer versions.

How to use it

  • Install wine(7.4 works fine, any lower version may cause crashes, any newer may also crash, but this is bug in Wine, not in this project)
  • Install GNU Rust inside Wine(I used 1.59.0, but any higher version should work fine) - https://forge.rust-lang.org/infra/other-installation-methods.html#standalone-installers
  • Clone/Download windows-rs repository(required to get info about windows api functions) - git clone https://github.com/microsoft/windows-rs.git
  • Clone this repository - git clone https://github.com/qarmin/Win32Fuzzer.git
  • Compile and run project with 1 argument set as path to windows-rs repository cargo run /home/test/windows-rs
  • Go to WinProject(which is inside this project) cd WinProject/
  • Compile this project wine cargo build
  • Generated binaries should be available here target/debug/wine_project.exe
  • By default, binary should not crash, because all problematic functions are excluded in settings.rs file, so feel free to comment required lines.
  • Setup if needed settings.txt file, template is already available in path WinProject/settings.txt
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Comments
  • Failed to run on linux (No such file or directory)

    Failed to run on linux (No such file or directory)

    Trying to run on Linux results in error.

    $ cargo run --release
   Compiling same-file v1.0.6
   Compiling walkdir v2.3.2
   Compiling win32_fuzzer v1.0.0 (/home/juozas/Win32Fuzzer)
    Finished release [optimized] target(s) in 25.69s
     Running `target/release/win32_fuzzer`
thread 'main' panicked at 'Failed to open /home/rafal/test/windows-rs/crates/libs/sys/src/Windows/Win32/Graphics/Printing/mod.rs, due Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/parse_file.rs:7:19
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

    It references a path on non-existing location.

    opened by juozaspo 2
  • Update to windows-rs 0.35.0

    Update to windows-rs 0.35.0

    This require to improve method to gather number of arguments, because currently only sys crate is parsed, but windows-rs adds/remove some arguments, so this is not 100% proper

    opened by qarmin 0
Releases(1.1.0)

  • 1.1.0(Mar 17, 2022)

  • 1.0.0(Mar 12, 2022)

    Binaries of 1.0.0 version of fuzzer with disabled checking for crashed/not implemented in Linux functions

    Running win_project.exe from win_project.zip will run every supported function from any "class"(class in this context means module or something similar)

    Also exists file win_project_disabled_functions which just disable problematic functions, so it should just run fine without any crashes in WIne 7.3(it can crash in later versions due regressions etc.)

    To configure which functions from which classes will be checked, settings.txt file can be configured. Example content

    allowed_functions:
GetThemeData
ignored_functions:

allowed_classes:

ignored_classes:

# How much repeat functions in row, one after one
repeating_number:
1

# How much time repeat execution of classes(20 means that 20 times will be executed functions for certain classes)
all_repeating_number:
-1

# Use random order when executing functions from this class
random:
false

    List of functions that crashes on Wine Devel 7.3 but not in Wine Staging

    CloseThemeData - Controls
GetKeyboardLayoutList

    Test project to be able to compile single functions is attached and without any changes it will compile several minutes(or even hours), so I suggest to remove some features from Cargo.toml file

    Source code(tar.gz)
    Source code(zip)
    7.3.staging.results.txt(74.28 KB)
    CargoTestProject.zip(32.80 KB)
    settings.txt(175 bytes)
    win_project.zip(46.40 MB)
    win_project_disabled_functions.zip(45.69 MB)
Owner
Rafał Mikrut
Rafał Mikrut
GitHub
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