IsDccSharp

IsDccSharp is a C#/.NET Framework 4.8 port of the public isDcc InstallShield INX decoder: https://github.com/darknesswind/IsDcc

It decodes compiled InstallShield .inx files into readable script-like text. The project is split into a reusable decoder library, a command-line tool, and a WPF viewer.

Viewer

Projects

Project	Purpose
src/IsDccSharp.Core	Reusable decoder library with sync and async APIs.
src/IsDccSharp.Cli	Console application: IsDccSharp.exe.
src/IsDccSharp.Viewer	WPF viewer built with MVVM.

Build

Requirements:

• Windows
• .NET SDK
• .NET Framework 4.8 reference assemblies

dotnet build .\IsDccSharp.sln -c Release

CLI output:

src\IsDccSharp.Cli\bin\Release\net48\IsDccSharp.exe

WPF viewer output:

src\IsDccSharp.Viewer\bin\Release\net48\IsDccSharp.Viewer.exe

CLI Usage

IsDccSharp.exe "C:\path\setup.inx" "C:\path\setup.txt"

Without the second argument, decoded text is printed to the console:

IsDccSharp.exe "C:\path\setup.inx"

Library Usage

using IsDccSharp.Core;

var decoder = new InxDecoder();
DecodeResult result = await decoder.DecodeFileAsync(@"C:\path\setup.inx");

Console.WriteLine(result.Text);

The library also exposes DecodeFile and DecodeBytes for synchronous or in-memory use.

Credits

This port keeps the original isDcc author history:

• isDcc v1.x, (c) 1998 Andrew de Quincey
• isDcc v2.00, (c) 2000 Mr. Smith
• isDcc v2.10, (c) 2001 Mr. Smith
• isDcc v3.10, (c) 2001 Mr Won't tell :)
• isDcc v4.00, (c) 2021 pawstas80

Improvements

• Ported the decoder to C# and .NET Framework 4.8.
• Added automatic aLuZ detection to avoid double-unscrambling.
• Fixed goto2 alignment for newer INX files.
• Applied the type 13 correction from TYPE_AUTOSTRING to TYPE_UNDEF5.
• Added Stirling Technologies info string support as a warning.

References:

• https://github.com/darknesswind/IsDcc

Use only with files you own or are allowed to analyze. Review the original source licensing before selecting a public repository license.