Eazfuscator.NET – Free .NET Obfuscator

What's New in Eazfuscator.NET

Version 2.8 released on April 13, 2010

Added automatic XML documentation filter. XML documentation for non-public classes, methods, fields, properties and events is automatically pruned so that essential knowledge about component internals does not leak to the rest of the world anymore. This feature is essential for component developers and publishers
Added automatic signing key discovery. .SNK key file(s) can now be placed near the input assemblies
Added support for .NET 4.0 and Microsoft Visual Studio 2010
Added Eazfuscator.NET SDK for .NET
Added ability to pass custom parameters to ILMerge utility
Added an ability to create fail-safe project integrations. Such projects can be successfuly built without obfuscation when Eazfuscator.NET is not installed on machine
Added an ability to ignore InternalsVisibleToAttribute
Added --probing-paths option. It allows to specify folders to use during assembly resolution
Improved reflection analysis for components with design-time behavior
Improved pruning of .NET metadata
Improved obfuscation speed
Improved performance of string encryption
SuppressIldasmAttribute is automaticaly applied to the obfuscated assemblies
Updated documentation
Fixed bug with custom COM marshallers
Fixed bug with sattelite assemblies in .NET Compact Framework applications
/ndebug command line option is automatically passed to ILMerge utility when assembly merging is used
Fixed a bug in .NET Framework installation path discovery
Fixed overload induction algorithm to satisfy C++ assemblies that reference obfuscated assemblies. This fix is essential for component developers and publishers
Fixed an issue with SuppressIldasmAttribute when Eazfuscator is run by .NET 4.0
ILMerge transitive closure detection is no longer turned on by default. This eliminates unexpected assembly merging
Added AllowPartiallyTrustedCallers attribute to Eazfuscator.NET.SDK.dll assembly. This fixed a bug with SDK in partial-trust environment
Fixed a bug in stackalloc statement processing
Fixed a bug in attribute-controlled obfuscation of fields

Version 2.7 released on September 24, 2009

Greatly improved reflection analysis for WCF classes. As a result, webservices work flawlessly in Silverlight applications
Critical bug was fixed in string encryption code. Some strings became corrupted due to JIT inlining optimization

Version 2.6 released on September 5, 2009

Added support for indirect declarative obfuscation (see documentation for details)
Added support for Silverlight 3 technology
Added support for XNA 3.1 technology
Added features for advanced obfuscation of binary serialized items (see documentation for details)
Improved support for COM interoperability types
Improved XML serialization support
Updated documentation
Excluded bell character from character set of random name generator
Fixed automatic serialization detection for nested classes
Fixed bug which led to 'The given key was not present in the dictionary' message
Fixed bug with overloaded signature lookup and multidimensional array parameters
Fixed bugs in overload signature detection for generics
Fixed bug in custom attributes handling for properties
Fixed concurrency issue in string decryption code (was confirmed on multicore x64 systems)
Fixed a bug which led to 'Unable to parse type name token "[out][opt]"' error

Version 2.5 released on May 19, 2009

Implemented support of XNA Game Studio 3.0 applications for Windows, Xbox 360 and Zune platforms
Added new option to the options dialog which allows to disable automatic updates
Added integration with Visual Web Developer Express
Improved reflection analysis engine. Class properties renaming is automatically excluded for anonymous types used in ASP.NET MVC routing
Implemented automatic exclusion of configuration section and group classes from obfuscation
Implemented automatic handling of InternalsVisibleToAttribute
Implemented support for tuning properties renaming for anonymous types at the assembly level
Improved obfuscation of P/Invoke methods
Slightly renewed GUI
Fixed assemblies merging for .NET Compact Framework 3.5
Fixed bug in handling of method template constraints
Fixed bug in overload signatures processing when some arguments are constrained by the class template definition
Fixed bug in obfuscation of XNA Game Studio 2.0 applications for Xbox 360 platform
Fixed bug which led to phantom modopt signature modification

Version 2.4 released on April 4, 2009

Added support for Silverlight 2 assemblies and XAP packages
Greatly improved ASP.NET support. Implemented automatic detection of auto-bound events, so obfuscation of ASP.NET applications is mostly flawless now
Improved support of .NET 3.5 add-in technology. AddInViews assemblies are resolved automatically when add-in assembly is obfuscated, so now it's possible to obfuscate add-in pipeline assemblies without any additional efforts
Added 'Globally disable obfuscation' setting to Eazfuscator.NET Assistant GUI for debugging purposes
Improved reflection analysis engine. Designer-generated resources in Compact Framework projects are handled automatically
Implemented symbol renaming with printable characters
Implemented turn off feature for string encryption
Slightly improved obfuscation speed
Eazfuscator.NET Assistant GUI effects are turned off in remote desktop session
Improved and updated documentation
Fixed bug during obfuscation of unsafe managed code
Fixed bug in processing of custom attributes for class properties. Now it's possible to manage obfuscation of properties with custom attributes
Fixed bug in handling of ldelema IL instruction. As a side effect, it was impossible to obfuscate the assemblies produced by the recent version of ILMerge (first seen with ILMerge version 2.9.0210)
Fixed bug in processing of public constants with enumeration types
Fixed bug in stack depth calculation. Also this fixes a long-term issue of assembly runtime crashes after code control flow obfuscation

Version 2.3 released on December 20, 2008

Implemented ability of Eazfuscator.NET to work with xcopy deployment scenario
Improved startup speed of Eazfuscator.NET applications
Improved handling of -o option in command line interface
Improved search algorithm for .NET SDK tools. Eazfuscator.NET is able to consume tools from PATH environment variable now
Fixed various method signature lookup bugs
Fixed bug with generic type processing which sometimes led to "Object reference not set to an instance of an object" error

Version 2.2 released on October 12, 2008

Implemented code control flow obfuscation. This feature is not active by default, to get more information please refer to documentation
Improved reflection analysis engine. Automatic handling of localized properties of private components
Improved metadata removal algorithm
Improved symbol names encryption algorithm
More graceful error messages
Fixed bugs with method signature lookup
Fixed bug which led to "Unable to find tool 'Ildasm.exe'" error when Visual Studio Express SP1 is used as primary development tool and no other .NET tools are installed

Version 2.1 released on July 28, 2008

Implemented support of the encrypted symbol names. This allows to decode stack traces of the production releases
Implemented assemblies merging feature (uses ILMerge utility underneath)
Renewed documentation with description of the new features
Fixed bug with nested templates handling
Fixed bug with auto sealing of the classes which were excluded from the obfuscation

Version 2.0 released on June 2, 2008

Implemented support of the password protected assembly signing keys
Improved reflection analysis of the xml serialization scenarios
Improved metadata removal algorithm
Fixed bug which occurred when some custom attributes were read from the assembly. This bug often occurred during obfuscation of the classes generated by table adapter designer in Microsoft Visual Studio
Fixed bug with multidimensional arrays handling

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1.X versions archive (February 6, 2008 - May 5, 2008)