2025.06.30

[mrexodia]

June 2025: Type System and Modernization

We're excited to announce a major new release of x64dbg, the open-source user mode debugger for Windows. For those new to the project, x64dbg is designed to make reverse engineering and malware analysis faster and more intuitive. This release marks a significant step forward, overhauling our core type system and modernizing our entire toolchain to bring you a more powerful and stable debugging experience.

✨ Revamped Type System

In previous versions, analyzing data structures was a tedious, manual process and many features were not supported. This release adds support for bitfields, enums and anonymous types, which allows all types in the Windows SDK to be represented and displayed.

The ManyTypes plugin by @notpidgey (who also drove this revamp) allows you to import C header files and see the results directly in x64dbg. While we plan to streamline this workflow even further in future updates, this is a huge leap in making data inspection easier.

This isn't just about convenience; it's about speed. We've introduced drastic performance improvements to the struct widget, so you can now browse deeply nested pointers and large data structures without the lag.

19-01-53-types-update.mp4

We’ve also added a host of quality-of-life improvements:

• Interactive type selection: While selecting the type you will instantly see what the data looks like, enabling a more interactive workflow.
• Smarter Displays: Character arrays are now automatically rendered as strings, saving you an extra step.
• Better Integration: You can now invoke the "Display type" action directly from the register and stack views, making it easier than ever to inspect data on the fly.

💻 AVX-512 and Half-Float Support

This release introduces support for the latest CPU instruction sets, ensuring you can analyze even the most modern applications.

• AVX-512 Support: You now have the power to debug and analyze code that leverages the AVX-512 instruction set, a critical feature for high-performance computing and complex malware.
• Half-Float Support: We've added support for 16-bit half-precision floating-point numbers in the dump, a feature especially useful when reversing graphics applications or machine learning models.

⚡ Small Changes, Big Impact

Sometimes it’s the little things that count. Based on your feedback, we've added several small but mighty workflow enhancements:

• Copy Graph Image: You can now copy the function graph directly to your clipboard, making it effortless to share your findings or add visuals to your reports.
• Copy Calling Convention Arguments: A new context menu option lets you quickly copy function arguments, streamlining the process of reconstructing code or documenting function calls.
• Focus on Window in Handles View: You can now bring a target window to the foreground directly from the handles view, which is incredibly useful for UI-heavy debugging.
• Revamped Launcher: The launcher now has checkboxes and an uninstall option.

🚀 Modern Tooling and a New Release Cycle

We've completed a monumental migration of our entire build system to Visual Studio 2022 and CMake. This massive undertaking provides a more stable foundation, makes it easier for new developers to contribute, and accelerates the pace of future improvements. The compilation instructions were cut down from 13 steps to a single one.

There has also been movement on a headless version of x64dbg. The main focus for now is automated testing, but eventually it will be expanded to allow headless automations.

Starting with this release, we will be using CalVer (Calendar Versioning) with proper GitHub releases and tags. This will keep our releases more organized and allow package managers and users to reference specific versions more easily. Additionally Windows XP is no longer supported and for Windows 7/8.1 you will get an unskippable deprecation warning:

🔮 Looking Ahead: A Cross-Platform Future

We're excited to share a glimpse into our experimental cross-platform branch. This is our testbed for separating core GUI widgets into a reusable library, with the goal of bringing x64dbg's powerful tools to all major platforms (Windows, macOS, and Linux).

Current experimental tools include:

• A simple hex viewer that uses the ImHex Pattern Language to visualize data structures.
• A minidump viewer to browse .dmp files on any platform.
• A remote table tool that showcases fetching data over a high-latency network.

These tools are still in early development and not part of the release, but they represent a critical step toward a more versatile and platform-independent future for our components.

🤝 Community

x64dbg is a community-driven project, and this release would not have been possible without the incredible work of our contributors. A huge thank you to everyone who contributed code, reported bugs, and helped shape this release ❤️

We recently revamped the Discord community, which you can join below:

Other platforms are synchronized with the #general channel:

❤️ Sponsors

This project is partially made possible by the generous support of sponsors. We would like to give a special shout out to the following sponsors who donated at the highest tier since the last release:

• 🥇 FLOSS/fund - Funding for Free and Open Source projects.
• SEKTOR7 Institute
• Back Engineering
• aslrnk
• RedOps

Also many thanks to the other active sponsors: @adam-the, @verdeckt, @emesare, @daaximus, @stevemk14ebr, @as0ni, @sedrakpc, @Dan0xE, @Invoke-RE, @leandrofroes, @shu-tom, @buzzer-re, @expend20, @crudd, @clayne, @fr0zenbag, @merces, @dzzie

If you find x64dbg valuable in your work, please consider becoming a sponsor. Your support directly funds development and helps us continue to build the future of debugging. For companies we also offer custom services depending on the level of sponsorship, please reach out for more details!

📜 Changelog

• Fix translation errors
• Split ModuleStdTable into header and sources to fix Q_OBJECT error
• Build with GitHub Actions by @mrexodia in Build with GitHub Actions #3538
• Ignore clangd cache
• Fix buffer overflow by @torusrxxx in Fix buffer overflow #3541
• Add dump support for half float by @torusrxxx in Add dump support for half float #3544
• Add support for AVX512 by @torusrxxx in Add support for AVX512 #3536
• Fix compilation on MinGW (clang) by @mrexodia in Fix compilation on MinGW (clang) #3539
• Fix wrong icon for ActionTreatSelectionAsXXX by @torusrxxx in Fix wrong icon for ActionTreatSelectionAsXXX #3546
• Always update the Example text's background color by @G3ph4z in Always update the Example text's background color #3537
• Show launcher on first launch after installing by @whindsaks in Show launcher on first launch after installing #3521
• New x96dbg configuration dialog by @G3ph4z in New x96dbg configuration dialog #3532
• Make a rebuild copy the dependencies again
• Add headless mode POC Use library for command line parsing #3516
• Fix compilation with clang-cl
• Add some more state for the headless mode
• Automatically download submodules when necessary
• Updated Type Database Handling by @notpidgey in Updated Type Database Handling #3552
• Fix structure packing in TitanEngine.h RegistersView display wrong DR7 value #3563
• Update badges
• Improve plugin loading error messages
• Fix errors with simple header parsing
• Improved error reporting in DisplayType command
• Allow configuring default max pointer depth in DisplayType
• Small UX improvements in struct widget
• Move "Display type" to CommonActions and add to registers/stack
• Fix missing stdint types when building with vs2022 v120_xp toolset by @WindowsAPI in Fix missing stdint types when building with vs2022 v120_xp toolset #3593
• Fix error handling in ParseTypes
• Added Copy Menu for Call Conv Arguments by @notpidgey in Added Copy Menu for Call Conv Arguments #3595
• Draw jump lines under register label; Focus on window in handles view by @torusrxxx in Draw jump lines under register label; Focus on window in handles view #3585
• Copy graph image by @torusrxxx in Copy graph image #3578
• Add IRC link to README
• Added Type Reload Functionality in Struct View by @notpidgey in Added Type Reload Functionality in Struct View #3597
• Update AStyleHelper to only format changed files
• Mark padding as bitfield
• Fix a bug with GotoDialog::setInitialExpression not working twice in a row
• Performance improvements for StructWidget
• Remove Visual Studio projects
• Static MSVC runtime for launcher and loaddll
• Prefix commands with $ to format the command itself
• Add a few string expression functions
• Update breakpoint dialog tooltip match reality
• Add test for Allow dll breakpoint with any name or (wildcard) #3599
• Add back missing /DELAYLOAD options Switch to CMake and fix compilation with VS2022 #3412
• Add selectionChanged signal to SearchListView
• Implement DisplayTypeDialog for better UX
• Change StructWidget to inherit from TypeWidget
• Make type visiting expansion depth configurable
• Add GuiTypeListUpdated for better UX
• Hide __anonymous types
• Improve pretty printing in NodeVisitor
• Print string values of character arrays
• Get rid of Qt5Network dependency
• Match snapshot format to previous releases
• Update dependencies
• Upload snapshot ZIP files as artifacts directly
• Fix: Trim trailing whitespace in script labels Remove whitespace after label in script #3589 by @oxqnd in Fix: Trim trailing whitespace in script labels #3589 #3610
• Fix Handles->Message Breakpoint: wnd proc or handle is unavailable (wine) by @eldarkg in Fix Handles->Message Breakpoint: wnd proc or handle is unavailable (wine) #3607
• Fixed inverted logic by @OldGamesCracking in Fixed inverted logic #3588

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This discussion was created from the release 2025.06.30.

[whindsaks]

Sad to see XP go, hopefully we can still make it work in ReactOS.