ilspy-decompile

Name: ilspy-decompile
Author: Aaronontheweb

422installs98forks

How to install ilspy-decompile?

aaronontheweb/dotnet-skills/ilspy-decompile

$npx -y skills add Aaronontheweb/dotnet-skills --skill ilspy-decompile

Installs into the current project.

Summary

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.

Files · 1

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SKILL.md

1	# .NET Assembly Decompilation with ILSpy
2
3	Use this skill to understand how .NET code works internally by decompiling compiled assemblies.
4
5	## Prerequisites
6
7	- .NET SDK installed
8	- ILSpy command-line tool available via one of the following:
9	- `dnx ilspycmd` (if available in your SDK or runtime)
10	- `dotnet tool install --global ilspycmd`
11
12	Both forms are shown below. Use the one that works in your environment.
13
14	> Note: ILSpyCmd options may vary slightly by version.
15	> Always verify supported flags with `ilspycmd -h`.
16
17	## Quick start
18
19	```bash
20	# Decompile an assembly to stdout
21	ilspycmd MyLibrary.dll
22	# or
23	dnx ilspycmd MyLibrary.dll
24
25	# Decompile to an output folder
26	ilspycmd -o output-folder MyLibrary.dll
27	```
28
29	## Common .NET Assembly Locations
30
31	### NuGet packages
32
33	```bash
34	~/.nuget/packages/<package-name>/<version>/lib/<tfm>/
35	```
36
37	### .NET runtime libraries
38
39	```bash
40	dotnet --list-runtimes
41	```
42
43	### .NET SDK reference assemblies
44
45	```bash
46	dotnet --list-sdks
47	```
48
49	> Reference assemblies do not contain implementations.
50
51	### Project build output
52
53	```bash
54	./bin/Debug/net8.0/<AssemblyName>.dll
55	./bin/Release/net8.0/publish/<AssemblyName>.dll
56	```
57
58	## Core workflow
59
60	1. Identify what you want to understand
61	2. Locate the assembly
62	3. List types
63	4. Decompile the target
64
65	## Commands
66
67	### Basic decompilation
68
69	```bash
70	ilspycmd MyLibrary.dll
71	ilspycmd -o ./decompiled MyLibrary.dll
72	ilspycmd -p -o ./project MyLibrary.dll
73	```
74
75	### Targeted decompilation
76
77	```bash
78	ilspycmd -t Namespace.ClassName MyLibrary.dll
79	ilspycmd -lv CSharp12_0 MyLibrary.dll
80	```
81
82	### View IL code
83
84	```bash
85	ilspycmd -il MyLibrary.dll
86	```
87
88	## Notes on modern .NET builds
89
90	- ReadyToRun images may reduce readability
91	- Trimmed or AOT builds may omit code
92	- Prefer non-trimmed builds
93
94	## Legal note
95
96	Decompiling assemblies may be subject to license restrictions.

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Type

ilspy-decompile

422installs98forks

View on GitHub

How to install ilspy-decompile?

aaronontheweb/dotnet-skills/ilspy-decompile

$npx -y skills add Aaronontheweb/dotnet-skills --skill ilspy-decompile

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# .NET Assembly Decompilation with ILSpy
2
3	Use this skill to understand how .NET code works internally by decompiling compiled assemblies.
4
5	## Prerequisites
6
7	- .NET SDK installed
8	- ILSpy command-line tool available via one of the following:
9	- `dnx ilspycmd` (if available in your SDK or runtime)
10	- `dotnet tool install --global ilspycmd`
11
12	Both forms are shown below. Use the one that works in your environment.
13
14	> Note: ILSpyCmd options may vary slightly by version.
15	> Always verify supported flags with `ilspycmd -h`.
16
17	## Quick start
18
19	```bash
20	# Decompile an assembly to stdout
21	ilspycmd MyLibrary.dll
22	# or
23	dnx ilspycmd MyLibrary.dll
24
25	# Decompile to an output folder
26	ilspycmd -o output-folder MyLibrary.dll
27	```
28
29	## Common .NET Assembly Locations
30
31	### NuGet packages
32
33	```bash
34	~/.nuget/packages/<package-name>/<version>/lib/<tfm>/
35	```
36
37	### .NET runtime libraries
38
39	```bash
40	dotnet --list-runtimes
41	```
42
43	### .NET SDK reference assemblies
44
45	```bash
46	dotnet --list-sdks
47	```
48
49	> Reference assemblies do not contain implementations.
50
51	### Project build output
52
53	```bash
54	./bin/Debug/net8.0/<AssemblyName>.dll
55	./bin/Release/net8.0/publish/<AssemblyName>.dll
56	```
57
58	## Core workflow
59
60	1. Identify what you want to understand
61	2. Locate the assembly
62	3. List types
63	4. Decompile the target
64
65	## Commands
66
67	### Basic decompilation
68
69	```bash
70	ilspycmd MyLibrary.dll
71	ilspycmd -o ./decompiled MyLibrary.dll
72	ilspycmd -p -o ./project MyLibrary.dll
73	```
74
75	### Targeted decompilation
76
77	```bash
78	ilspycmd -t Namespace.ClassName MyLibrary.dll
79	ilspycmd -lv CSharp12_0 MyLibrary.dll
80	```
81
82	### View IL code
83
84	```bash
85	ilspycmd -il MyLibrary.dll
86	```
87
88	## Notes on modern .NET builds
89
90	- ReadyToRun images may reduce readability
91	- Trimmed or AOT builds may omit code
92	- Prefer non-trimmed builds
93
94	## Legal note
95
96	Decompiling assemblies may be subject to license restrictions.

People who liked this also viewed

6 picks

Type