public static void AnalyzeDeobfuscationParams(UnhollowerOptions options)
{
RewriteGlobalContext rewriteContext;
using (new TimingCookie("Reading assemblies"))
rewriteContext = new RewriteGlobalContext(options, Directory.EnumerateFiles(options.SourceDir, "*.dll"));
for (var chars = 1; chars <= 3; chars++)
{
for (var uniq = 3; uniq <= 15; uniq++)
{
options.TypeDeobfuscationCharsPerUniquifier = chars;
options.TypeDeobfuscationMaxUniquifiers = uniq;
rewriteContext.RenamedTypes.Clear();
rewriteContext.RenameGroups.Clear();
Pass05CreateRenameGroups.DoPass(rewriteContext);
var uniqueTypes = rewriteContext.RenameGroups.Values.Count(it => it.Count == 1);
var nonUniqueTypes = rewriteContext.RenameGroups.Values.Count(it => it.Count > 1);
Console.WriteLine($"Chars=\t{chars}\tMaxU=\t{uniq}\tUniq=\t{uniqueTypes}\tNonUniq=\t{nonUniqueTypes}");
}
}
}
public static void AnalyzeDeobfuscationParams(UnhollowerOptions options)
{
RewriteGlobalContext rewriteContext;
IIl2CppMetadataAccess inputAssemblies;
using (new TimingCookie("Reading assemblies"))
inputAssemblies = new CecilMetadataAccess(options.Source);
using (new TimingCookie("Creating assembly contexts"))
rewriteContext = new RewriteGlobalContext(options, inputAssemblies, NullMetadataAccess.Instance, NullMetadataAccess.Instance);
for (var chars = 1; chars <= 3; chars++)
{
for (var uniq = 3; uniq <= 15; uniq++)
{
options.TypeDeobfuscationCharsPerUniquifier = chars;
options.TypeDeobfuscationMaxUniquifiers = uniq;
rewriteContext.RenamedTypes.Clear();
rewriteContext.RenameGroups.Clear();
Pass05CreateRenameGroups.DoPass(rewriteContext);
var uniqueTypes = rewriteContext.RenameGroups.Values.Count(it => it.Count == 1);
var nonUniqueTypes = rewriteContext.RenameGroups.Values.Count(it => it.Count > 1);
Console.WriteLine($"Chars=\t{chars}\tMaxU=\t{uniq}\tUniq=\t{uniqueTypes}\tNonUniq=\t{nonUniqueTypes}");
}
}
}
public static void Main(UnhollowerOptions options)
{
if (string.IsNullOrEmpty(options.SourceDir))
{
Console.WriteLine("No input dir specified; use -h for help");
return;
}
if (string.IsNullOrEmpty(options.OutputDir))
{
Console.WriteLine("No target dir specified; use -h for help");
return;
}
if (string.IsNullOrEmpty(options.MscorlibPath))
{
Console.WriteLine("No mscorlib specified; use -h for help");
return;
}
if (!Directory.Exists(options.OutputDir))
{
Directory.CreateDirectory(options.OutputDir);
}
RewriteGlobalContext rewriteContext;
using (new TimingCookie("Reading assemblies"))
rewriteContext = new RewriteGlobalContext(options, Directory.EnumerateFiles(options.SourceDir, "*.dll"));
using (new TimingCookie("Computing renames"))
Pass05CreateRenameGroups.DoPass(rewriteContext);
using (new TimingCookie("Creating typedefs"))
Pass10CreateTypedefs.DoPass(rewriteContext);
using (new TimingCookie("Computing struct blittability"))
Pass11ComputeTypeSpecifics.DoPass(rewriteContext);
using (new TimingCookie("Filling typedefs"))
Pass12FillTypedefs.DoPass(rewriteContext);
using (new TimingCookie("Filling generic constraints"))
Pass13FillGenericConstraints.DoPass(rewriteContext);
using (new TimingCookie("Creating members"))
Pass15GenerateMemberContexts.DoPass(rewriteContext);
using (new TimingCookie("Scanning method cross-references"))
Pass16ScanMethodRefs.DoPass(rewriteContext, options);
using (new TimingCookie("Finalizing method declarations"))
Pass18FinalizeMethodContexts.DoPass(rewriteContext);
LogSupport.Info($"{Pass18FinalizeMethodContexts.TotalPotentiallyDeadMethods} total potentially dead methods");
using (new TimingCookie("Filling method parameters"))
Pass19CopyMethodParameters.DoPass(rewriteContext);
using (new TimingCookie("Creating static constructors"))
Pass20GenerateStaticConstructors.DoPass(rewriteContext);
using (new TimingCookie("Creating value type fields"))
Pass21GenerateValueTypeFields.DoPass(rewriteContext);
using (new TimingCookie("Creating enums"))
Pass22GenerateEnums.DoPass(rewriteContext);
using (new TimingCookie("Creating IntPtr constructors"))
Pass23GeneratePointerConstructors.DoPass(rewriteContext);
using (new TimingCookie("Creating type getters"))
Pass24GenerateTypeStaticGetters.DoPass(rewriteContext);
using (new TimingCookie("Creating non-blittable struct constructors"))
Pass25GenerateNonBlittableValueTypeDefaultCtors.DoPass(rewriteContext);
using (new TimingCookie("Creating generic method static constructors"))
Pass30GenerateGenericMethodStoreConstructors.DoPass(rewriteContext);
using (new TimingCookie("Creating field accessors"))
Pass40GenerateFieldAccessors.DoPass(rewriteContext);
using (new TimingCookie("Filling methods"))
Pass50GenerateMethods.DoPass(rewriteContext);
using (new TimingCookie("Generating implicit conversions"))
Pass60AddImplicitConversions.DoPass(rewriteContext);
using (new TimingCookie("Creating properties"))
Pass70GenerateProperties.DoPass(rewriteContext);
if (options.UnityBaseLibsDir != null)
{
using (new TimingCookie("Unstripping types"))
Pass79UnstripTypes.DoPass(rewriteContext);
using (new TimingCookie("Unstripping fields"))
Pass80UnstripFields.DoPass(rewriteContext);
using (new TimingCookie("Unstripping methods"))
Pass80UnstripMethods.DoPass(rewriteContext);
using (new TimingCookie("Unstripping method bodies"))
Pass81FillUnstrippedMethodBodies.DoPass(rewriteContext);
}
else
{
LogSupport.Warning("Not performing unstripping as unity libs are not specified");
}
using (new TimingCookie("Generating forwarded types"))
Pass89GenerateForwarders.DoPass(rewriteContext);
using (new TimingCookie("Writing xref cache"))
Pass89GenerateMethodXrefCache.DoPass(rewriteContext, options);
using (new TimingCookie("Writing assemblies"))
Pass90WriteToDisk.DoPass(rewriteContext, options);
using (new TimingCookie("Writing method pointer map"))
Pass91GenerateMethodPointerMap.DoPass(rewriteContext, options);
if (!options.NoCopyUnhollowerLibs)
{
File.Copy(typeof(IL2CPP).Assembly.Location, Path.Combine(options.OutputDir, typeof(IL2CPP).Assembly.GetName().Name + ".dll"), true);
File.Copy(typeof(RuntimeLibMarker).Assembly.Location, Path.Combine(options.OutputDir, typeof(RuntimeLibMarker).Assembly.GetName().Name + ".dll"), true);
File.Copy(typeof(Decoder).Assembly.Location, Path.Combine(options.OutputDir, typeof(Decoder).Assembly.GetName().Name + ".dll"), true);
}
LogSupport.Info("Done!");
rewriteContext.Dispose();
}
public static void GenerateDeobfuscationMap(UnhollowerOptions options)
{
if (string.IsNullOrEmpty(options.SourceDir))
{
Console.WriteLine("No input dir specified; use -h for help");
return;
}
if (string.IsNullOrEmpty(options.OutputDir))
{
Console.WriteLine("No target dir specified; use -h for help");
return;
}
if (string.IsNullOrEmpty(options.DeobfuscationNewAssembliesPath))
{
Console.WriteLine("No obfuscated assembly path specified; use -h for help");
return;
}
if (!Directory.Exists(options.OutputDir))
{
Directory.CreateDirectory(options.OutputDir);
}
RewriteGlobalContext rewriteContext;
IIl2CppMetadataAccess inputAssemblies;
IIl2CppMetadataAccess systemAssemblies;
using (new TimingCookie("Reading assemblies"))
inputAssemblies = new CecilMetadataAccess(Directory.EnumerateFiles(options.DeobfuscationNewAssembliesPath, "*.dll"));
using (new TimingCookie("Reading system assemblies"))
{
if (!string.IsNullOrEmpty(options.SystemLibrariesPath))
{
systemAssemblies = new CecilMetadataAccess(Directory.EnumerateFiles(options.SystemLibrariesPath, "*.dll")
.Where(it => Path.GetFileName(it).StartsWith("System.") || Path.GetFileName(it) == "mscorlib.dll" || Path.GetFileName(it) == "netstandard.dll"));
}
else
{
systemAssemblies = new CecilMetadataAccess(new[] { options.MscorlibPath });
}
}
using (new TimingCookie("Creating rewrite assemblies"))
rewriteContext = new RewriteGlobalContext(options, inputAssemblies, systemAssemblies, NullMetadataAccess.Instance);
using (new TimingCookie("Computing renames"))
Pass05CreateRenameGroups.DoPass(rewriteContext);
using (new TimingCookie("Creating typedefs"))
Pass10CreateTypedefs.DoPass(rewriteContext);
using (new TimingCookie("Computing struct blittability"))
Pass11ComputeTypeSpecifics.DoPass(rewriteContext);
using (new TimingCookie("Filling typedefs"))
Pass12FillTypedefs.DoPass(rewriteContext);
using (new TimingCookie("Filling generic constraints"))
Pass13FillGenericConstraints.DoPass(rewriteContext);
using (new TimingCookie("Creating members"))
Pass15GenerateMemberContexts.DoPass(rewriteContext);
RewriteGlobalContext cleanContext;
IIl2CppMetadataAccess cleanAssemblies;
using (new TimingCookie("Reading clean assemblies"))
cleanAssemblies = new CecilMetadataAccess(Directory.EnumerateFiles(options.SourceDir, "*.dll"));
using (new TimingCookie("Creating clean rewrite assemblies"))
cleanContext = new RewriteGlobalContext(options, cleanAssemblies, systemAssemblies, NullMetadataAccess.Instance);
using (new TimingCookie("Computing clean assembly renames"))
Pass05CreateRenameGroups.DoPass(cleanContext);
using (new TimingCookie("Creating clean assembly typedefs"))
Pass10CreateTypedefs.DoPass(cleanContext);
var usedNames = new Dictionary <TypeDefinition, (string OldName, int Penalty, bool ForceNs)>();
using var fileOutput = new FileStream(options.OutputDir + Path.DirectorySeparatorChar + "RenameMap.csv.gz", FileMode.Create, FileAccess.Write);
using var gzipStream = new GZipStream(fileOutput, CompressionLevel.Optimal, true);
using var writer = new StreamWriter(gzipStream, Encoding.UTF8, 65536, true);
void DoEnum(TypeRewriteContext obfuscatedType, TypeRewriteContext cleanType)
{
foreach (var originalTypeField in obfuscatedType.OriginalType.Fields)
{
if (!originalTypeField.Name.IsObfuscated(obfuscatedType.AssemblyContext.GlobalContext.Options))
{
continue;
}
var matchedField = cleanType.OriginalType.Fields[obfuscatedType.OriginalType.Fields.IndexOf(originalTypeField)];
writer.WriteLine(obfuscatedType.NewType.GetNamespacePrefix() + "." + obfuscatedType.NewType.Name + "::" + Pass22GenerateEnums.GetUnmangledName(originalTypeField) + ";" + matchedField.Name + ";0");
}
}
foreach (var assemblyContext in rewriteContext.Assemblies)
{
if (options.DeobfuscationGenerationAssemblies.Count > 0 &&
!options.DeobfuscationGenerationAssemblies.Contains(assemblyContext.NewAssembly.Name.Name))
{
continue;
}
var cleanAssembly = cleanContext.GetAssemblyByName(assemblyContext.OriginalAssembly.Name.Name);
void DoType(TypeRewriteContext typeContext, TypeRewriteContext?enclosingType)
{
if (!typeContext.OriginalNameWasObfuscated)
{
return;
}
var cleanType = FindBestMatchType(typeContext, cleanAssembly, enclosingType);
if (cleanType.Item1 == null)
{
return;
}
if (!usedNames.TryGetValue(cleanType.Item1.NewType, out var existing) || existing.Item2 < cleanType.Item2)
{
usedNames[cleanType.Item1.NewType] = (typeContext.NewType.GetNamespacePrefix() + "." + typeContext.NewType.Name, cleanType.Item2, typeContext.OriginalType.Namespace != cleanType.Item1.OriginalType.Namespace);
}
else
{
return;
}
if (typeContext.OriginalType.IsEnum)
{
DoEnum(typeContext, cleanType.Item1);
}
foreach (var originalTypeNestedType in typeContext.OriginalType.NestedTypes)
{
DoType(typeContext.AssemblyContext.GetContextForOriginalType(originalTypeNestedType), cleanType.Item1);
}
}
foreach (var typeContext in assemblyContext.Types)
{
if (typeContext.NewType.DeclaringType != null)
{
continue;
}
DoType(typeContext, null);
}
}
foreach (var keyValuePair in usedNames)
{
writer.WriteLine(keyValuePair.Value.Item1 + ";" + (keyValuePair.Value.ForceNs ? keyValuePair.Key.Namespace + "." : "") + keyValuePair.Key.Name + ";" + keyValuePair.Value.Item2);
}
LogSupport.Info("Done!");
rewriteContext.Dispose();
}
public static void Main(UnhollowerOptions options)
{
if (string.IsNullOrEmpty(options.SourceDir))
{
Console.WriteLine("No input dir specified; use -h for help");
return;
}
if (string.IsNullOrEmpty(options.OutputDir))
{
Console.WriteLine("No target dir specified; use -h for help");
return;
}
if (string.IsNullOrEmpty(options.MscorlibPath))
{
Console.WriteLine("No mscorlib specified; use -h for help");
return;
}
if (!Directory.Exists(options.OutputDir))
{
Directory.CreateDirectory(options.OutputDir);
}
RewriteGlobalContext rewriteContext;
using (new TimingCookie("Reading assemblies"))
rewriteContext = new RewriteGlobalContext(options, Directory.EnumerateFiles(options.SourceDir, "*.dll"));
using (new TimingCookie("Computing renames"))
Pass05CreateRenameGroups.DoPass(rewriteContext);
using (new TimingCookie("Creating typedefs"))
Pass10CreateTypedefs.DoPass(rewriteContext);
using (new TimingCookie("Computing struct blittability"))
Pass11ComputeTypeSpecifics.DoPass(rewriteContext);
using (new TimingCookie("Filling typedefs"))
Pass12FillTypedefs.DoPass(rewriteContext);
using (new TimingCookie("Filling generic constraints"))
Pass13FillGenericConstraints.DoPass(rewriteContext);
using (new TimingCookie("Creating members"))
Pass15GenerateMemberContexts.DoPass(rewriteContext);
using (new TimingCookie("Creating static constructors"))
Pass20GenerateStaticConstructors.DoPass(rewriteContext);
using (new TimingCookie("Creating value type fields"))
Pass21GenerateValueTypeFields.DoPass(rewriteContext);
using (new TimingCookie("Creating enums"))
Pass22GenerateEnums.DoPass(rewriteContext);
using (new TimingCookie("Creating IntPtr constructors"))
Pass23GeneratePointerConstructors.DoPass(rewriteContext);
using (new TimingCookie("Creating type getters"))
Pass24GenerateTypeStaticGetters.DoPass(rewriteContext);
using (new TimingCookie("Creating non-blittable struct constructors"))
Pass25GenerateNonBlittableValueTypeDefaultCtors.DoPass(rewriteContext);
using (new TimingCookie("Creating generic method static constructors"))
Pass30GenerateGenericMethodStoreConstructors.DoPass(rewriteContext);
using (new TimingCookie("Creating field accessors"))
Pass40GenerateFieldAccessors.DoPass(rewriteContext);
using (new TimingCookie("Filling methods"))
Pass50GenerateMethods.DoPass(rewriteContext);
using (new TimingCookie("Generating implicit conversions"))
Pass60AddImplicitConversions.DoPass(rewriteContext);
using (new TimingCookie("Creating properties"))
Pass70GenerateProperties.DoPass(rewriteContext);
if (options.UnityBaseLibsDir != null)
{
using (new TimingCookie("Unstripping types"))
Pass79UnstripTypes.DoPass(rewriteContext);
using (new TimingCookie("Unstripping methods"))
Pass80UnstripMethods.DoPass(rewriteContext);
}
else
{
Console.WriteLine("Not performing unstripping as unity libs are not specified");
}
using (new TimingCookie("Writing assemblies"))
Pass99WriteToDisk.DoPass(rewriteContext, options);
File.Copy(typeof(IL2CPP).Assembly.Location, Path.Combine(options.OutputDir, typeof(IL2CPP).Assembly.GetName().Name + ".dll"), true);
File.Copy(typeof(DelegateSupport).Assembly.Location, Path.Combine(options.OutputDir, typeof(DelegateSupport).Assembly.GetName().Name + ".dll"), true);
File.Copy(typeof(Decoder).Assembly.Location, Path.Combine(options.OutputDir, typeof(Decoder).Assembly.GetName().Name + ".dll"), true);
Console.WriteLine("Done!");
}