/// <summary>
/// Build an obfuscated XLS Macro Document, or Deobfuscate an existing malicious XLS Macro Document.
/// </summary>
/// <param name="args"></param>
public static void Main(string[] args)
{
try
{
Command buildCommand = new Command("b", null);
buildCommand.AddAlias("build");
MethodInfo buildMethodInfo = typeof(Program).GetMethod(nameof(Build));
buildCommand.ConfigureFromMethod(buildMethodInfo);
Command deobfuscateCommand = new Command("d", null);
deobfuscateCommand.AddAlias("deobfuscate");
MethodInfo deobfuscateMethodInfo = typeof(Program).GetMethod(nameof(Deobfuscate));
deobfuscateCommand.ConfigureFromMethod(deobfuscateMethodInfo);
Command dumpCommand = new Command("dump", null);
MethodInfo dumpMethodInfo = typeof(Program).GetMethod(nameof(Dump));
dumpCommand.ConfigureFromMethod(dumpMethodInfo);
RootCommand rootCommand = new RootCommand("Build an obfuscated XLS Macro Document, or Deobfuscate an existing malicious XLS Macro Document.")
{
deobfuscateCommand,
buildCommand,
dumpCommand
};
CommandLineBuilder builder = new CommandLineBuilder(rootCommand);
builder.ConfigureHelpFromXmlComments(buildMethodInfo, null);
//Manually set this after reading the XML for descriptions
builder.Command.Description =
"Build an obfuscated XLS Macro Document or Deobfuscate an existing malicious XLS Macro Document.";
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
builder
.UseDefaults()
.Build()
.Invoke(args);
}
catch (Exception e)
{
Console.WriteLine("Unexpected Exception Occurred:\n");
Console.WriteLine(e);
}
}
public CommandLineBuilder CreateCommandLineBuilder()
{
// Check for the original EntryPoint
var exeAsm = Assembly.GetEntryAssembly();
var entryPoint = exeAsm.EntryPoint;
if (entryPoint == null)
{
throw new InvalidOperationException("Failed to locate assembly entry point!");
}
var programType = entryPoint.DeclaringType;
var executeMethods = programType
.GetMethods()
.Where(m => m.IsPublic && m.Name.Equals("ExecuteAsync", StringComparison.OrdinalIgnoreCase))
.ToList();
if (executeMethods.Count == 0)
{
throw new InvalidOperationException($"Unable to find a '{programType.FullName}.ExecuteAsync' method!");
}
else if (executeMethods.Count > 1)
{
throw new AmbiguousMatchException($"Multiple '{programType.FullName}.ExecuteAsync' methods were found!");
}
var executeMethod = executeMethods[0];
var builder = new CommandLineBuilder();
// The 'target' argument isn't even used...
builder.Command.ConfigureFromMethod(executeMethod, target: () => null);
// Try to add docs from XML doc comments
builder.ConfigureHelpFromXmlComments(executeMethod, Path.ChangeExtension(exeAsm.Location, ".xml"));
// Activate the target via DI
builder.UseMiddleware(c => c.BindingContext.AddService(executeMethod.DeclaringType, () => ActivatorUtilities.CreateInstance(_services, executeMethod.DeclaringType, Array.Empty <object>())));
return(builder);
}