Agent Skills
› NeverSight/learn-skills.dev
› ilspy-decompile
ilspy-decompile
GitHub通过ILSpy反编译.NET程序集，深入理解API内部实现、NuGet包源码及框架逻辑。支持查看类型列表、指定类反编译及IL代码，适用于分析编译后的.NET二进制文件。
Trigger Scenarios
查看 .NET API 内部实现细节
检查 NuGet 包的源代码
查看 .NET 框架的底层实现
分析已编译的 .NET 二进制文件
Install
npx skills add NeverSight/learn-skills.dev --skill ilspy-decompile -g -y
SKILL.md
Frontmatter
{
"name": "ilspy-decompile",
"description": "Understand implementation details of .NET code by decompiling assemblies. Use when you want to see how a .NET API works internally, inspect NuGet package source, view framework implementation, or understand compiled .NET binaries.",
"allowed-tools": "Bash(dnx:*)"
}
.NET Assembly Decompilation with ILSpy
Use this skill to understand how .NET code works internally by decompiling compiled assemblies.
Prerequisites
- .NET SDK installed
- ILSpy command-line tool available via one of the following:
dnx ilspycmd(if available in your SDK or runtime)dotnet tool install --global ilspycmd
Both forms are shown below. Use the one that works in your environment.
Note: ILSpyCmd options may vary slightly by version.
Always verify supported flags withilspycmd -h.
Quick start
# Decompile an assembly to stdout
ilspycmd MyLibrary.dll
# or
dnx ilspycmd MyLibrary.dll
# Decompile to an output folder
ilspycmd -o output-folder MyLibrary.dll
Common .NET Assembly Locations
NuGet packages
~/.nuget/packages/<package-name>/<version>/lib/<tfm>/
.NET runtime libraries
dotnet --list-runtimes
.NET SDK reference assemblies
dotnet --list-sdks
Reference assemblies do not contain implementations.
Project build output
./bin/Debug/net8.0/<AssemblyName>.dll
./bin/Release/net8.0/publish/<AssemblyName>.dll
Core workflow
- Identify what you want to understand
- Locate the assembly
- List types
- Decompile the target
Commands
Basic decompilation
ilspycmd MyLibrary.dll
ilspycmd -o ./decompiled MyLibrary.dll
ilspycmd -p -o ./project MyLibrary.dll
Targeted decompilation
ilspycmd -t Namespace.ClassName MyLibrary.dll
ilspycmd -lv CSharp12_0 MyLibrary.dll
View IL code
ilspycmd -il MyLibrary.dll
Notes on modern .NET builds
- ReadyToRun images may reduce readability
- Trimmed or AOT builds may omit code
- Prefer non-trimmed builds
Legal note
Decompiling assemblies may be subject to license restrictions.
Version History
- e0220ca Current 2026-07-05 22:12
