├── .gitignore
├── AsertInject
├── AsertInject.csproj
├── AsertSigning.cs
├── O.cs
├── Properties
│ └── AssemblyInfo.cs
└── UnityCertificate.cs
├── AsertNet.sln
├── AsertNet
├── Arguments.cs
├── AsertNet.csproj
├── Program.cs
├── Properties
│ └── AssemblyInfo.cs
├── Protection
│ ├── AntiTamper
│ │ └── AntiTampering.cs
│ ├── Asert.cs
│ ├── Constants
│ │ └── ConstantProtection.cs
│ ├── Extensions.cs
│ ├── Renaming
│ │ └── Renamer.cs
│ └── Utils.cs
├── Signing
│ ├── AssemblyInfo.cs
│ └── Signer.cs
└── packages.config
├── LICENSE
├── Libs
├── dnlib.dll
├── dnlib.pdb
├── dnlib.xml
├── log4net.dll
└── log4net.pdb
└── README.md
/.gitignore:
--------------------------------------------------------------------------------
1 | # Autosave files
2 | *~
3 |
4 | # build
5 | [Oo]bj/
6 | [Bb]in/
7 | packages/
8 | TestResults/
9 |
10 | # globs
11 | Makefile.in
12 | *.DS_Store
13 | *.sln.cache
14 | *.suo
15 | *.cache
16 | *.pidb
17 | *.userprefs
18 | *.usertasks
19 | config.log
20 | config.make
21 | config.status
22 | aclocal.m4
23 | install-sh
24 | autom4te.cache/
25 | *.user
26 | *.tar.gz
27 | tarballs/
28 | test-results/
29 | Thumbs.db
30 |
31 | # Mac bundle stuff
32 | *.dmg
33 | *.app
34 |
35 | # resharper
36 | *_Resharper.*
37 | *.Resharper
38 |
39 | # dotCover
40 | *.dotCover
41 |
--------------------------------------------------------------------------------
/AsertInject/AsertInject.csproj:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 | Debug
5 | AnyCPU
6 | {B0CCFCF4-F67A-4717-A6D8-AF4B5E244E4D}
7 | Library
8 | AsertInject
9 | AsertInject
10 | v3.5
11 |
12 |
13 | true
14 | full
15 | false
16 | bin\Debug
17 | DEBUG;
18 | prompt
19 | 4
20 | false
21 |
22 |
23 | true
24 | bin\Release
25 | prompt
26 | 4
27 | false
28 |
29 |
30 |
31 |
32 |
33 |
34 |
35 |
36 |
37 |
38 |
39 |
--------------------------------------------------------------------------------
/AsertInject/AsertSigning.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.IO;
3 | using System.Reflection;
4 | using System.Security.Cryptography;
5 | using System.Security.Policy;
6 |
7 | public static class AsertSigning
8 | {
9 | public static void Expose()
10 | {
11 | var hash = GetHash();
12 | var t = GetClass();
13 | var methodInfo = GetMethod(t);
14 | string h__ = methodInfo.Invoke(null, null).ToString();
15 | if (h__ != hash)
16 | throw new Exception();
17 | }
18 |
19 | public static string GetHash()
20 | {
21 | var a = System.Reflection.Assembly.GetExecutingAssembly();
22 | return BitConverter.ToString(a.GetName().GetPublicKeyToken()).Replace("-", string.Empty);
23 | }
24 |
25 | public static Type GetClass()
26 | {
27 | return Type.GetType("UnityEngine.UnityCertificate, UnityEngine.CoreModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null");
28 | }
29 |
30 | public static MethodInfo GetMethod(Type t)
31 | {
32 | return t.GetMethod("GetHash", System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public);
33 | }
34 |
35 | }
36 |
--------------------------------------------------------------------------------
/AsertInject/O.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.Linq;
3 | using System.Text;
4 |
5 | public static class O
6 | {
7 | public static int _(int i)
8 | {
9 | return i ^ 0;
10 | }
11 |
12 | public static string _e(string t, byte kk)
13 | {
14 | byte[] k = new byte[256];
15 | int ll = k.Length;
16 | for (int j = 0; j < ll; j++)
17 | if (j == 0)
18 | k[j] ^= 127;
19 | else
20 | k[j] ^= kk;
21 | int i = 0;
22 | int l = k.Length;
23 | byte[] octets = Encoding.UTF8
24 | .GetBytes(t)
25 | .Select(b => (byte)(b ^ k[(++i) % l]))
26 | .ToArray();
27 | return Convert.ToBase64String(octets);
28 | }
29 |
30 | public static string _d(string t)
31 | {
32 | byte kk = 196;
33 | byte[] k = new byte[256];
34 | int ll = k.Length;
35 | for (int j = 0; j < ll; j++)
36 | if (j == 0)
37 | k[j] ^= 127;
38 | else
39 | k[j] ^= kk;
40 | int l = k.Length;
41 | int i = 0;
42 | byte[] octets = Convert
43 | .FromBase64String(t)
44 | .Select(b => (byte)(b ^ k[(++i) % l]))
45 | .ToArray();
46 | string plainText = Encoding.UTF8.GetString(octets);
47 | return plainText;
48 | }
49 |
50 |
51 |
52 |
53 | }
--------------------------------------------------------------------------------
/AsertInject/Properties/AssemblyInfo.cs:
--------------------------------------------------------------------------------
1 | using System.Reflection;
2 | using System.Runtime.CompilerServices;
3 |
4 | // Information about this assembly is defined by the following attributes.
5 | // Change them to the values specific to your project.
6 |
7 | [assembly: AssemblyTitle("AsertInject")]
8 | [assembly: AssemblyDescription("")]
9 | [assembly: AssemblyConfiguration("")]
10 | [assembly: AssemblyCompany("")]
11 | [assembly: AssemblyProduct("")]
12 | [assembly: AssemblyCopyright("${AuthorCopyright}")]
13 | [assembly: AssemblyTrademark("")]
14 | [assembly: AssemblyCulture("")]
15 |
16 | // The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
17 | // The form "{Major}.{Minor}.*" will automatically update the build and revision,
18 | // and "{Major}.{Minor}.{Build}.*" will update just the revision.
19 |
20 | [assembly: AssemblyVersion("1.0.*")]
21 |
22 | // The following attributes are used to specify the signing key for the assembly,
23 | // if desired. See the Mono documentation for more information about signing.
24 |
25 | //[assembly: AssemblyDelaySign(false)]
26 | //[assembly: AssemblyKeyFile("")]
27 |
--------------------------------------------------------------------------------
/AsertInject/UnityCertificate.cs:
--------------------------------------------------------------------------------
1 | using System;
2 |
3 | namespace UnityEngine
4 | {
5 | public static class UnityCertificate
6 | {
7 | public static string GetHash()
8 | {
9 | return "";
10 | }
11 | }
12 | }
13 |
--------------------------------------------------------------------------------
/AsertNet.sln:
--------------------------------------------------------------------------------
1 |
2 | Microsoft Visual Studio Solution File, Format Version 12.00
3 | # Visual Studio 2012
4 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AsertNet", "AsertNet\AsertNet.csproj", "{62ECFF04-3D8E-4A87-A0BF-46904A4936D0}"
5 | EndProject
6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AsertInject", "AsertInject\AsertInject.csproj", "{B0CCFCF4-F67A-4717-A6D8-AF4B5E244E4D}"
7 | EndProject
8 | Global
9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution
10 | Debug|x86 = Debug|x86
11 | Release|x86 = Release|x86
12 | EndGlobalSection
13 | GlobalSection(ProjectConfigurationPlatforms) = postSolution
14 | {62ECFF04-3D8E-4A87-A0BF-46904A4936D0}.Debug|x86.ActiveCfg = Debug|x86
15 | {62ECFF04-3D8E-4A87-A0BF-46904A4936D0}.Debug|x86.Build.0 = Debug|x86
16 | {62ECFF04-3D8E-4A87-A0BF-46904A4936D0}.Release|x86.ActiveCfg = Release|x86
17 | {62ECFF04-3D8E-4A87-A0BF-46904A4936D0}.Release|x86.Build.0 = Release|x86
18 | {B0CCFCF4-F67A-4717-A6D8-AF4B5E244E4D}.Debug|x86.ActiveCfg = Debug|Any CPU
19 | {B0CCFCF4-F67A-4717-A6D8-AF4B5E244E4D}.Debug|x86.Build.0 = Debug|Any CPU
20 | {B0CCFCF4-F67A-4717-A6D8-AF4B5E244E4D}.Release|x86.ActiveCfg = Release|Any CPU
21 | {B0CCFCF4-F67A-4717-A6D8-AF4B5E244E4D}.Release|x86.Build.0 = Release|Any CPU
22 | EndGlobalSection
23 | EndGlobal
24 |
--------------------------------------------------------------------------------
/AsertNet/Arguments.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.Text.RegularExpressions;
3 | using System.Collections.Generic;
4 |
5 | namespace AsertNet
6 | {
7 | ///
8 | /// Arguments class
9 | ///
10 | public class Arguments
11 | {
12 | // Variables
13 | private Dictionary Parameters;
14 |
15 | // Constructor
16 | public Arguments(string[] Args)
17 | {
18 | Parameters = new Dictionary();
19 | Regex Spliter = new Regex(@"^-{1,2}|^/|=|:", RegexOptions.IgnoreCase | RegexOptions.Compiled);
20 | Regex Remover = new Regex(@"^['""]?(.*?)['""]?$", RegexOptions.IgnoreCase | RegexOptions.Compiled);
21 | string Parameter = null;
22 | string[] Parts;
23 |
24 | // Valid parameters forms:
25 | // {-,/,--}param{ ,=,:}((",')value(",'))
26 | // Examples: -param1 value1 --param2 /param3:"Test-:-work" /param4=happy -param5 '--=nice=--'
27 | foreach (string Txt in Args)
28 | {
29 | // Look for new parameters (-,/ or --) and a possible enclosed value (=,:)
30 | Parts = Spliter.Split(Txt, 3);
31 | switch (Parts.Length)
32 | {
33 | // Found a value (for the last parameter found (space separator))
34 | case 1:
35 | if (Parameter != null)
36 | {
37 | if (!Parameters.ContainsKey(Parameter))
38 | {
39 | Parts[0] = Remover.Replace(Parts[0], "$1");
40 | Parameters.Add(Parameter, Parts[0]);
41 | }
42 | Parameter = null;
43 | }
44 | // else Error: no parameter waiting for a value (skipped)
45 | break;
46 | // Found just a parameter
47 | case 2:
48 | // The last parameter is still waiting. With no value, set it to true.
49 | if (Parameter != null)
50 | {
51 | if (!Parameters.ContainsKey(Parameter)) Parameters.Add(Parameter, "true");
52 | }
53 | Parameter = Parts[1];
54 | break;
55 | // Parameter with enclosed value
56 | case 3:
57 | // The last parameter is still waiting. With no value, set it to true.
58 | if (Parameter != null)
59 | {
60 | if (!Parameters.ContainsKey(Parameter)) Parameters.Add(Parameter, "true");
61 | }
62 | Parameter = Parts[1];
63 | // Remove possible enclosing characters (",')
64 | if (!Parameters.ContainsKey(Parameter))
65 | {
66 | Parts[2] = Remover.Replace(Parts[2], "$1");
67 | Parameters.Add(Parameter, Parts[2]);
68 | }
69 | Parameter = null;
70 | break;
71 | }
72 | }
73 | // In case a parameter is still waiting
74 | if (Parameter != null)
75 | {
76 | if (!Parameters.ContainsKey(Parameter)) Parameters.Add(Parameter, "true");
77 | }
78 | }
79 |
80 | public bool ContainsArg(string key)
81 | {
82 | return Parameters.ContainsKey(key);
83 | }
84 |
85 | // Retrieve a parameter value if it exists
86 | public string this[string Param]
87 | {
88 | get
89 | {
90 | return (Parameters[Param]);
91 | }
92 | }
93 | }
94 | }
95 |
--------------------------------------------------------------------------------
/AsertNet/AsertNet.csproj:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 | Debug
5 | x86
6 | {62ECFF04-3D8E-4A87-A0BF-46904A4936D0}
7 | Exe
8 | AsertNet
9 | AsertNet
10 | v3.5
11 |
12 |
13 | true
14 | full
15 | false
16 | bin\Debug
17 | DEBUG;
18 | prompt
19 | 4
20 | true
21 | x86
22 |
23 |
24 | true
25 | bin\Release
26 | prompt
27 | 4
28 | true
29 | x86
30 |
31 |
32 |
33 |
34 | ..\LIbs\log4net.dll
35 |
36 |
37 |
38 | ..\packages\Mono.Cecil.0.9.6.4\lib\net35\Mono.Cecil.dll
39 |
40 |
41 | ..\packages\Mono.Cecil.0.9.6.4\lib\net35\Mono.Cecil.Mdb.dll
42 |
43 |
44 | ..\packages\Mono.Cecil.0.9.6.4\lib\net35\Mono.Cecil.Pdb.dll
45 |
46 |
47 | ..\packages\Mono.Cecil.0.9.6.4\lib\net35\Mono.Cecil.Rocks.dll
48 |
49 |
50 | ..\Libs\dnlib.dll
51 |
52 |
53 |
54 |
55 |
56 |
57 |
58 |
59 |
60 |
61 |
62 |
63 |
64 |
65 |
66 |
67 |
68 | {B0CCFCF4-F67A-4717-A6D8-AF4B5E244E4D}
69 | AsertInject
70 |
71 |
72 |
73 |
74 |
75 |
76 |
77 |
78 |
79 |
80 |
81 |
82 |
83 |
--------------------------------------------------------------------------------
/AsertNet/Program.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.IO;
3 | using AsertNet.Protection;
4 | using log4net;
5 | using log4net.Config;
6 |
7 | namespace AsertNet
8 | {
9 | class MainClass
10 | {
11 | internal static readonly ILog log = LogManager.GetLogger(typeof(MainClass));
12 | public static void Main(string[] args)
13 | {
14 | System.Reflection.Assembly assembly = System.Reflection.Assembly.GetEntryAssembly();
15 | string ApplicationPath = System.IO.Path.GetDirectoryName(assembly.Location);
16 | XmlConfigurator.Configure(new FileInfo(Path.Combine(ApplicationPath, "logging.xml")));
17 |
18 | log.Info("Asert Unity Build Protection");
19 | log.Info("Copyright (c) 2017 - Alexander Melkozerov");
20 | log.Info("-------------------------------------------------");
21 |
22 | Arguments parsedArgs = new Arguments(args);
23 |
24 | if (!parsedArgs.ContainsArg("filename"))
25 | {
26 | PrintUsage();
27 | return;
28 | }
29 | string filename = parsedArgs["filename"];
30 |
31 |
32 | if (parsedArgs.ContainsArg("antitamper") && !parsedArgs.ContainsArg("unitylib"))
33 | {
34 | log.Error("You're going to use anti tampering protection, but forgot to specify location of the unityengine.dll with --unitylib argument");
35 | return;
36 | }
37 |
38 | Asert asert = new Asert(filename)
39 | {
40 | StrongRenaming = !parsedArgs.ContainsArg("softrenaming"),
41 | RenameEvents = parsedArgs.ContainsArg("renameevents") || parsedArgs.ContainsArg("renameall"),
42 | RenameProps = parsedArgs.ContainsArg("renameprops") || parsedArgs.ContainsArg("renameall"),
43 | RenameFields = parsedArgs.ContainsArg("renamefields") || parsedArgs.ContainsArg("renameall"),
44 | RenameTypes = parsedArgs.ContainsArg("renametypes") || parsedArgs.ContainsArg("renameall"),
45 | RenameMethodParams = parsedArgs.ContainsArg("renamemethodparams") || parsedArgs.ContainsArg("renameall"),
46 | RenameMethods = parsedArgs.ContainsArg("renamemethods") || parsedArgs.ContainsArg("renameall"),
47 |
48 | HideStrings = parsedArgs.ContainsArg("hidestrings"),
49 | HideIntegers = parsedArgs.ContainsArg("hideintegers"),
50 | EncryptStrings = parsedArgs.ContainsArg("encryptstrings"),
51 |
52 | };
53 |
54 | if (parsedArgs.ContainsArg("antitamper"))
55 | asert.AntiTamperingProtect();
56 | asert.ProtectConstants();
57 | asert.PerformRenaming();
58 | asert.Save(filename);
59 | if (parsedArgs.ContainsArg("antitamper"))
60 | {
61 | asert.AntiTamperingInjectUnity(asert.AntiTamperingSign(filename), parsedArgs["unitylib"]);
62 | }
63 | }
64 |
65 | static void PrintUsage()
66 | {
67 | log.Info("Usage: AsertNet.exe --filename=\"\"");
68 | log.Info("Additional parameters:");
69 | log.Info("--renameall - Perform renaming all things");
70 | log.Info("--renamemethods - Perform renaming methods");
71 | log.Info("--renamemethodparams - Perform renaming method parameters");
72 | log.Info("--renametypes - Perform renaming types");
73 | log.Info("--renamefields - Perform renaming fields");
74 | log.Info("--renameprops - Perform renaming props");
75 | log.Info("--renameevents - Perform renaming events");
76 | log.Info("--softrenaming - Renaming to hex symbols instead of unreadable UTF-8");
77 | log.Info("");
78 | log.Info("--hideintegers - Replacing every integer constant with masked value");
79 | log.Info("--hidestrings - Move all the string to the special module");
80 | log.Info("--encryptstrings - Xor all the string (if used will auto enable --hidestrings)");
81 | log.Info("");
82 | log.Info("--antitamper - Inject checksum verification");
83 | log.Info("--unitylib - Location of UnityEngine.dll (required for anti tampering)");
84 | }
85 |
86 | }
87 | }
--------------------------------------------------------------------------------
/AsertNet/Properties/AssemblyInfo.cs:
--------------------------------------------------------------------------------
1 | using System.Reflection;
2 | using System.Runtime.CompilerServices;
3 |
4 | // Information about this assembly is defined by the following attributes.
5 | // Change them to the values specific to your project.
6 |
7 | [assembly: AssemblyTitle("AsertNet")]
8 | [assembly: AssemblyDescription("")]
9 | [assembly: AssemblyConfiguration("")]
10 | [assembly: AssemblyCompany("")]
11 | [assembly: AssemblyProduct("")]
12 | [assembly: AssemblyCopyright("${AuthorCopyright}")]
13 | [assembly: AssemblyTrademark("")]
14 | [assembly: AssemblyCulture("")]
15 |
16 | // The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
17 | // The form "{Major}.{Minor}.*" will automatically update the build and revision,
18 | // and "{Major}.{Minor}.{Build}.*" will update just the revision.
19 |
20 | [assembly: AssemblyVersion("1.0.*")]
21 |
22 | // The following attributes are used to specify the signing key for the assembly,
23 | // if desired. See the Mono documentation for more information about signing.
24 |
25 | //[assembly: AssemblyDelaySign(false)]
26 | //[assembly: AssemblyKeyFile("")]
27 |
--------------------------------------------------------------------------------
/AsertNet/Protection/AntiTamper/AntiTampering.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.IO;
3 | using System.Security.Policy;
4 | using dnlib.DotNet;
5 | using dnlib.DotNet.Emit;
6 | using log4net;
7 | using UnityEngine;
8 |
9 | namespace AsertNet.Protection.AntiTamper
10 | {
11 | public class AntiTampering
12 | {
13 | internal static readonly ILog log = LogManager.GetLogger(typeof(AntiTampering));
14 |
15 |
16 | public static string Sign(string resultAssemblyFilename)
17 | {
18 | log.Info("Signing module...");
19 | var aInfo = Signing.Signer.SignAssembly(resultAssemblyFilename);
20 | log.Info("Module signed with token " + aInfo.HexToken);
21 | return aInfo.HexToken;
22 | }
23 |
24 |
25 | public static void AddCallToUnity(ModuleDefMD unityModule, string hash)
26 | {
27 | log.Info("Adding hash to Unity...");
28 |
29 | System.Reflection.Assembly assembly = System.Reflection.Assembly.GetEntryAssembly();
30 | string applicationPath = System.IO.Path.GetDirectoryName(assembly.Location);
31 | ModuleDefMD typeModule = ModuleDefMD.Load(System.IO.Path.Combine(applicationPath, "AsertInject.dll"));
32 | TypeDef tamperClass = typeModule.ResolveTypeDef(MDToken.ToRID(typeof(UnityCertificate).MetadataToken));
33 | MethodDef checkerMethod = tamperClass.FindMethod("GetHash");
34 |
35 | typeModule.Types.Remove(tamperClass);
36 | unityModule.Types.Add(tamperClass);
37 |
38 | checkerMethod.Body.Instructions[1].Operand = hash;
39 |
40 | //foreach (var i in checkerMethod.Body.Instructions)
41 | // Console.WriteLine(i);
42 | }
43 |
44 | public static void AddCallToModule(ModuleDefMD module)
45 | {
46 | log.Info("Adding hash checking to the assembly...");
47 | System.Reflection.Assembly assembly = System.Reflection.Assembly.GetEntryAssembly();
48 | string applicationPath = System.IO.Path.GetDirectoryName(assembly.Location);
49 | ModuleDefMD typeModule = ModuleDefMD.Load(System.IO.Path.Combine(applicationPath, "AsertInject.dll"));
50 | TypeDef tamperClass = typeModule.ResolveTypeDef(MDToken.ToRID(typeof(AsertSigning).MetadataToken));
51 |
52 | typeModule.Types.Remove(tamperClass);
53 | module.Types.Add(tamperClass);
54 |
55 | MethodDef cctor = module.GlobalType.FindOrCreateStaticConstructor();
56 |
57 | //foreach (var p in cctor.Body.Instructions)
58 | //Console.WriteLine(p);
59 |
60 | cctor.Body.Instructions.Insert(0, Instruction.Create(OpCodes.Call, tamperClass.FindMethod("Expose")));
61 |
62 |
63 | //var t = Type.GetType("UnityEngine.UnityCertificate, UnityEngine.CoreModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null");
64 | //Console.WriteLine(t);
65 | //Console.WriteLine(t.GetMethod("GetHash", System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public));
66 | //var methodInfo = t.GetMethod("GetHash", System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public);
67 | //string h__ = methodInfo.Invoke(null, null).ToString();
68 |
69 | //throw new Exception("asd");
70 |
71 |
72 |
73 |
74 | //foreach (TypeDef type in module.Types)
75 | //{
76 | // if (type.IsGlobalModuleType)
77 | // continue;
78 |
79 | // foreach (MethodDef method in type.Methods)
80 | // {
81 | // if (!method.HasBody)
82 | // continue;
83 | // if (method.IsConstructor)
84 | // {
85 | // method.Body.Instructions.Insert(0, Instruction.Create(OpCodes.Nop));
86 | // method.Body.Instructions.Insert(0, Instruction.Create(OpCodes.Call, init));
87 | // }
88 | // }
89 | //}
90 | }
91 | }
92 | }
93 |
--------------------------------------------------------------------------------
/AsertNet/Protection/Asert.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.IO;
3 | using AsertNet.Protection.AntiTamper;
4 | using AsertNet.Protection.Constants;
5 | using AsertNet.Protection.Renaming;
6 | using dnlib.DotNet;
7 | using log4net;
8 |
9 |
10 | namespace AsertNet.Protection
11 | {
12 | public class Asert
13 | {
14 | public bool StrongRenaming { get; set; }
15 | public bool RenameTypes { get; set; }
16 | public bool RenameMethods { get; set; }
17 | public bool RenameMethodParams { get; set; }
18 | public bool RenameFields { get; set; }
19 | public bool RenameProps { get; set; }
20 | public bool RenameEvents { get; set; }
21 |
22 | public bool HideIntegers { get; set; }
23 | public bool HideStrings { get; set; }
24 | public bool EncryptStrings { get; set; }
25 |
26 | internal static readonly ILog log = LogManager.GetLogger(typeof(Asert));
27 | ModuleDefMD module;
28 |
29 | public Asert(string filename)
30 | {
31 | log.Info("Reading file " + filename);
32 | module = ModuleDefMD.Load(filename);
33 | }
34 |
35 | public void PerformRenaming()
36 | {
37 | Renamer r = new Renamer(module)
38 | {
39 | RenameTypes = this.RenameTypes,
40 | RenameMethods = this.RenameMethods,
41 | RenameMethodParams = this.RenameMethodParams,
42 | RenameFields = this.RenameFields,
43 | RenameProps = this.RenameProps,
44 | RenameEvents = this.RenameEvents,
45 | StrongRenaming = this.StrongRenaming,
46 | };
47 | r.RenameModule();
48 | }
49 |
50 | public void ProtectConstants()
51 | {
52 | ConstantProtection cp = new ConstantProtection(module)
53 | {
54 | HideStrings = this.HideStrings,
55 | HideIntegers = this.HideIntegers,
56 | EncryptStrings = this.EncryptStrings,
57 | };
58 | cp.Protect();
59 | }
60 |
61 | public void AntiTamperingProtect()
62 | {
63 | AntiTampering.AddCallToModule(module);
64 | }
65 |
66 | public string AntiTamperingSign(string resultAssembly)
67 | {
68 | return AntiTampering.Sign(resultAssembly);
69 | }
70 |
71 | public void AntiTamperingInjectUnity(string hash, string unityLibFilename)
72 | {
73 | log.Info("Reading file " + unityLibFilename);
74 | var unityModule = ModuleDefMD.Load(unityLibFilename);
75 | AntiTampering.AddCallToUnity(unityModule, hash);
76 | unityModule.Write(unityLibFilename);
77 | log.Info("Unity lib updated");
78 | }
79 |
80 | public void Save(string filename)
81 | {
82 | module.Write(filename);
83 | log.Info("File Saved to " + filename);
84 | }
85 |
86 | }
87 | }
88 |
--------------------------------------------------------------------------------
/AsertNet/Protection/Constants/ConstantProtection.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.Collections.Generic;
3 | using System.Text;
4 | using dnlib.DotNet;
5 | using dnlib.DotNet.Emit;
6 | using log4net;
7 |
8 | namespace AsertNet.Protection.Constants
9 | {
10 | public class ConstantProtection
11 | {
12 | public bool HideIntegers { get; set; }
13 | public bool HideStrings { get; set; }
14 | public bool EncryptStrings { get; set; }
15 |
16 | internal static readonly ILog log = LogManager.GetLogger(typeof(ConstantProtection));
17 |
18 | ModuleDefMD module;
19 | MethodDef intMaskMethod;
20 | MethodDef strMaskMethod;
21 | int intKey;
22 | byte strKey;
23 | Random rnd;
24 | List usedNames;
25 |
26 | public ConstantProtection(ModuleDefMD module)
27 | {
28 | this.usedNames = new List();
29 | this.module = module;
30 | this.rnd = new Random();
31 | }
32 |
33 | void InjectMasker()
34 | {
35 | System.Reflection.Assembly assembly = System.Reflection.Assembly.GetEntryAssembly();
36 | string applicationPath = System.IO.Path.GetDirectoryName(assembly.Location);
37 | ModuleDefMD typeModule = ModuleDefMD.Load(System.IO.Path.Combine(applicationPath, "AsertInject.dll"));
38 | TypeDef maskClass = typeModule.ResolveTypeDef(MDToken.ToRID(typeof(O).MetadataToken));
39 | typeModule.Types.Remove(maskClass);
40 | module.Types.Add(maskClass);
41 |
42 | intMaskMethod = maskClass.FindMethod("_");
43 | intKey = rnd.Next();
44 | intMaskMethod.Body.Instructions[2].OpCode = OpCodes.Ldc_I4;
45 | intMaskMethod.Body.Instructions[2].Operand = intKey;
46 |
47 | strMaskMethod = maskClass.FindMethod("_d");
48 | strKey = (byte)rnd.Next(2, 255);
49 | strMaskMethod.Body.Instructions[3].OpCode = OpCodes.Ldc_I4;
50 | strMaskMethod.Body.Instructions[3].Operand = (int)strKey;
51 |
52 | //var mm = maskClass.FindMethod("_d");
53 | //Console.WriteLine(mm);
54 | //Console.WriteLine(mm.HasBody);
55 | //foreach (var i in mm.Body.Instructions)
56 | // Console.WriteLine(i);
57 | //throw new Exception("Stop");
58 |
59 | log.InfoFormat("Keys generated. Str: {0}, Int: {1}", strKey, intKey);
60 | }
61 |
62 | public void Protect()
63 | {
64 | log.Info("Injecting masking class...");
65 | InjectMasker();
66 | log.Info("Protecting modules...");
67 | foreach (TypeDef type in module.Types)
68 | {
69 | ProtectType(type);
70 | }
71 | }
72 |
73 | void ProtectType(TypeDef type)
74 | {
75 | foreach (MethodDef method in type.Methods)
76 | {
77 | ProcessMethod(method);
78 | }
79 |
80 | if (type.HasNestedTypes)
81 | foreach (TypeDef nested in type.NestedTypes)
82 | ProtectType(nested);
83 | }
84 |
85 | bool CanProtect(MethodDef method)
86 | {
87 | if (method == intMaskMethod)
88 | return false;
89 | if (!method.HasBody)
90 | return false;
91 | if (method.DeclaringType.IsGlobalModuleType)
92 | return false;
93 | return true;
94 | }
95 |
96 | void ProcessMethod(MethodDef method)
97 | {
98 | if (!CanProtect(method))
99 | return;
100 | log.DebugFormat("Protecting constants in method {0}.{1}()", method.DeclaringType.FullName, method.Name);
101 |
102 | if (HideIntegers)
103 | {
104 | var instr = method.Body.Instructions;
105 | for (int i = 0; i < instr.Count; i++)
106 | {
107 | if (instr[i].IsLdcI4())
108 | {
109 | ProtectIntegers(method, i);
110 | i += 10;
111 | }
112 | }
113 | }
114 |
115 | if (HideStrings || EncryptStrings)
116 | StringHidding(method);
117 | }
118 |
119 | void ProtectIntegers(MethodDef method, int i)
120 | {
121 | var instr = method.Body.Instructions;
122 | if (!instr[i].IsLdcI4())
123 | return;
124 |
125 | int value = instr[i].GetLdcI4Value();
126 | method.Body.Instructions.Insert(i + 1, Instruction.Create(OpCodes.Call, intMaskMethod));
127 | method.Body.Instructions[i].OpCode = OpCodes.Ldc_I4;
128 | method.Body.Instructions[i].Operand = value ^ intKey;
129 | }
130 |
131 | string MaskString(string s)
132 | {
133 | if (!EncryptStrings)
134 | return s;
135 | return O._e(s, strKey);
136 | }
137 |
138 | void StringHidding(MethodDef method)
139 | {
140 | var instr = method.Body.Instructions;
141 |
142 | for (int i = 0; i < instr.Count; i++)
143 | {
144 | if (instr[i].OpCode == OpCodes.Ldstr)
145 | {
146 | var original_str_value = instr[i].Operand.ToString();
147 | var modulector = method.Module.GlobalType;
148 |
149 | FieldDefUser original_str_value_field = new FieldDefUser(GenerateNewName(),
150 | new FieldSig(method.Module.CorLibTypes.String),
151 | FieldAttributes.Public | FieldAttributes.Static);
152 | modulector.Fields.Add(original_str_value_field);
153 |
154 | var cctor = modulector.FindOrCreateStaticConstructor();
155 |
156 | //cctor.Body.Instructions.Insert(cctor.Body.Instructions.Count - 1,
157 | // OpCodes.Ldstr.ToInstruction(MaskString(original_str_value)));
158 |
159 | //cctor.Body.Instructions.Insert(cctor.Body.Instructions.Count - 1,
160 | //OpCodes.Stsfld.ToInstruction(original_str_value_field));
161 |
162 | cctor.Body.Instructions.Insert(0,
163 | OpCodes.Stsfld.ToInstruction(original_str_value_field));
164 | cctor.Body.Instructions.Insert(0,
165 | OpCodes.Ldstr.ToInstruction(MaskString(original_str_value)));
166 |
167 |
168 | instr[i].OpCode = OpCodes.Ldsfld;
169 | instr[i].Operand = original_str_value_field;
170 |
171 | if (EncryptStrings)
172 | instr.Insert(i + 1, Instruction.Create(OpCodes.Call, strMaskMethod));
173 |
174 | }
175 | }
176 | }
177 |
178 | public string GenerateNewName()
179 | {
180 | string str = Utils.RandomStringHex(rnd, 16);
181 | while (usedNames.Contains(str))
182 | {
183 | str = Utils.RandomStringHex(rnd, 16);
184 | }
185 | usedNames.Add(str);
186 | return str;
187 | }
188 |
189 | }
190 | }
191 |
--------------------------------------------------------------------------------
/AsertNet/Protection/Extensions.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.Linq;
3 | using dnlib.DotNet;
4 |
5 | namespace AsertNet.Protection
6 | {
7 | public static class Extensions
8 | {
9 | ///
10 | /// Determines whether the object has the specified custom attribute.
11 | ///
12 | /// The object.
13 | /// The full name of the type of custom attribute.
14 | /// true if the specified object has custom attribute; otherwise, false.
15 | public static bool HasAttribute(this IHasCustomAttribute obj, string fullName)
16 | {
17 | return obj.CustomAttributes.Any(attr => attr.TypeFullName == fullName);
18 | }
19 |
20 | ///
21 | /// Determines whether the specified type is inherited from a base type.
22 | ///
23 | /// The type.
24 | /// The full name of base type.
25 | /// true if the specified type is inherited from a base type; otherwise, false.
26 | public static bool InheritsFrom(this TypeDef type, string baseType)
27 | {
28 | if (type.BaseType == null)
29 | return false;
30 |
31 | TypeDef bas = type;
32 | do
33 | {
34 | try
35 | {
36 | bas = bas.BaseType.ResolveTypeDefThrow();
37 | if (bas.ReflectionFullName == baseType)
38 | return true;
39 | }
40 | catch (TypeResolveException)
41 | {
42 | return false;
43 | }
44 |
45 | } while (bas.BaseType != null);
46 | return false;
47 | }
48 |
49 |
50 | ///
51 | /// Determines whether the specified type implements the specified interface.
52 | ///
53 | /// The type.
54 | /// The full name of the type of interface.
55 | /// true if the specified type implements the interface; otherwise, false.
56 | public static bool Implements(this TypeDef type, string fullName)
57 | {
58 | do
59 | {
60 | foreach (InterfaceImpl iface in type.Interfaces)
61 | {
62 | if (iface.Interface.ReflectionFullName == fullName)
63 | return true;
64 | }
65 |
66 | if (type.BaseType == null)
67 | return false;
68 | try
69 | {
70 | type = type.BaseType.ResolveTypeDefThrow();
71 | }
72 | catch (TypeResolveException)
73 | {
74 | return false;
75 | }
76 | } while (type != null);
77 | throw new Exception("Should not be reached.");
78 | }
79 | }
80 | }
81 |
--------------------------------------------------------------------------------
/AsertNet/Protection/Renaming/Renamer.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.Collections.Generic;
3 | using System.Linq;
4 | using System.Text;
5 | using dnlib.DotNet;
6 | using log4net;
7 |
8 | namespace AsertNet.Protection.Renaming
9 | {
10 | public class Renamer
11 | {
12 | public bool StrongRenaming { get; set; }
13 | public bool RenameTypes { get; set; }
14 | public bool RenameMethods { get; set; }
15 | public bool RenameMethodParams { get; set; }
16 | public bool RenameFields { get; set; }
17 | public bool RenameProps { get; set; }
18 | public bool RenameEvents { get; set; }
19 |
20 | internal static readonly ILog log = LogManager.GetLogger(typeof(Renamer));
21 |
22 |
23 | static readonly string[] lockedMethods = new string[] {
24 | "Awake",
25 | "Start",
26 | "Update",
27 | "LateUpdate",
28 | "FixedUpdate",
29 | "Reset",
30 | "Reset",
31 | "OnMouseEnter",
32 | "OnMouseOver",
33 | "OnMouseExit",
34 | "OnMouseDown",
35 | "OnMouseUp",
36 | "OnMouseDrag",
37 | "OnTriggerEnter",
38 | "OnTriggerExit",
39 | "OnTriggerStay",
40 | "OnCollisionEnter",
41 | "OnCollisionExit",
42 | "OnCollisionStay",
43 | "OnControllerColliderHit",
44 | "OnJointBreak",
45 | "OnParticleCollision",
46 | "OnBecameVisible",
47 | "OnBecameInvisible",
48 | "OnLevelWasLoaded",
49 | "OnEnable",
50 | "OnDisable",
51 | "OnPreCull",
52 | "OnPreRender",
53 | "OnPostRender",
54 | "OnRenderObject",
55 | "OnWillRenderObject",
56 | "OnGUI",
57 | "OnRenderImage",
58 | "OnDrawGizmosSelected",
59 | "OnDrawGizmos",
60 | "OnApplicationPause",
61 | "OnApplicationQuit",
62 | "OnPlayerConnected",
63 | "OnServerInitialized",
64 | "OnConnectedToServer",
65 | "OnPlayerDisconnected",
66 | "OnDisconnectedFromServer",
67 | "OnFailedToConnect",
68 | "OnFailedToConnectToMasterServer",
69 | "OnNetworkInstantiate",
70 | "OnSerializeNetworkView",
71 |
72 | "GetEnumerator",
73 | };
74 |
75 | ModuleDefMD module;
76 | List usedNames;
77 | Random rnd;
78 |
79 | public Renamer(ModuleDefMD module)
80 | {
81 | this.StrongRenaming = true;
82 | this.rnd = new Random();
83 | this.usedNames = new List();
84 | this.module = module;
85 | }
86 |
87 | public void RenameModule()
88 | {
89 | log.Info("Renaming things...");
90 | foreach (TypeDef type in module.Types)
91 | {
92 | RenameType(type);
93 | }
94 | }
95 |
96 | void RenameType(TypeDef type)
97 | {
98 | if (type.FullName == "AsertSigning")
99 | return;
100 |
101 | string oldName = type.FullName;
102 |
103 | if (CanRenameType(type))
104 | {
105 | string newName = GenerateNewName();
106 | log.DebugFormat("Renaming class {0} to {1}", type.Name, newName);
107 | type.Name = newName;
108 | }
109 |
110 | foreach(var method in type.Methods)
111 | {
112 | string oldMethodName = method.Name;
113 | RenameMethod(type, oldName, method);
114 | if (RenameMethodParams)
115 | RenameMethodSignatures(oldName, oldMethodName, method);
116 | }
117 |
118 | foreach (var field in type.Fields)
119 | RenameField(oldName, field);
120 |
121 | foreach (var prop in type.Properties)
122 | RenameProperty(oldName, prop);
123 |
124 | foreach (var ev in type.Events)
125 | RenameEvent(oldName, ev);
126 |
127 |
128 | if (type.HasNestedTypes)
129 | foreach (TypeDef nested in type.NestedTypes)
130 | RenameType(nested);
131 | }
132 |
133 | void RenameMethod(TypeDef type, string realTypeName, MethodDef method)
134 | {
135 | if (!CanRenameMethod(realTypeName, method))
136 | return;
137 |
138 | string newName = GenerateNewName();
139 | log.DebugFormat("Renaming method {0}.{1}() to {2}", realTypeName, method.Name, newName);
140 | method.Name = newName;
141 | }
142 |
143 | void RenameMethodSignatures(string realTypeName, string realMethodName, MethodDef method)
144 | {
145 | foreach (var p in method.Parameters)
146 | {
147 | string newName = GenerateNewName();
148 | log.DebugFormat("Renaming method parameter {0}.{1}({2}) to {3}", realTypeName, realMethodName, p.Name, newName);
149 | p.Name = newName;
150 | }
151 | }
152 |
153 | void RenameProperty(string realTypeName, PropertyDef prop)
154 | {
155 | if (!CanRenameProperty(realTypeName, prop))
156 | return;
157 | string newName = GenerateNewName();
158 | log.DebugFormat("Renaming property {0}.{1} to {2}", realTypeName, prop.Name, newName);
159 | prop.Name = newName;
160 | }
161 |
162 | void RenameEvent(string realTypeName, EventDef ev)
163 | {
164 | if (!CanRenameEvent(realTypeName, ev))
165 | return;
166 | string newName = GenerateNewName();
167 | log.DebugFormat("Renaming event {0}.{1} to {2}", realTypeName, ev.Name, newName);
168 | ev.Name = newName;
169 | }
170 |
171 | void RenameField(string realTypeName, FieldDef field)
172 | {
173 | if (!CanRenameField(realTypeName, field))
174 | return;
175 |
176 | string newName = GenerateNewName();
177 | log.DebugFormat("Renaming field {0}.{1} to {2}", realTypeName, field.Name, newName);
178 | //log.Debug("FLD: " + realTypeName + "." + field.Name + " ["+ field.FieldType +"]" + " >>> " + field.FieldType.IsGenericInstanceType);
179 | field.Name = newName;
180 | }
181 |
182 |
183 | bool CanRenameType(TypeDef type)
184 | {
185 | if (!RenameTypes)
186 | return false;
187 | if (type.IsRuntimeSpecialName || type.IsSpecialName)
188 | return false;
189 | if (type.IsImport)
190 | return false;
191 | if (type.IsGlobalModuleType)
192 | return false;
193 | if (IsTypeFromUnity(type))
194 | return false;
195 | if (type.CustomAttributes.Any(a => a.TypeFullName.EndsWith("DoNotRename", StringComparison.InvariantCulture)))
196 | return false;
197 |
198 | return true;
199 | }
200 |
201 | bool IsTypeFromUnity(TypeDef type)
202 | {
203 | var bType = type.BaseType as ITypeDefOrRef;
204 | while (bType != null)
205 | {
206 | if (bType.FullName.Contains("UnityEngine"))
207 | return true;
208 | bType = bType.GetBaseType() as ITypeDefOrRef;
209 | }
210 |
211 | return false;
212 | }
213 |
214 | bool CanRenameMethod(string realTypeName, MethodDef method)
215 | {
216 | if (!RenameMethods)
217 | return false;
218 | if (IsTypeFromUnity(method.DeclaringType))
219 | return false;
220 | if (method.IsRuntimeSpecialName || method.IsRuntime)
221 | return false;
222 | if (method.IsConstructor)
223 | return false;
224 | if (method.IsVirtual || method.IsAbstract || method.HasOverrides) //Not sure if both ruins
225 | return false;
226 | if (realTypeName.IndexOf("<>__AnonType", StringComparison.InvariantCulture) == 0) //Anonimous method make it hurt
227 | return false;
228 | if (method.DeclaringType.HasGenericParameters) //Generics too
229 | return false;
230 | if (method.DeclaringType.IsForwarder)
231 | return false;
232 | if (lockedMethods.Any(m => m == method.Name))
233 | return false;
234 | if (method.CustomAttributes.Any(a => a.TypeFullName.EndsWith("DoNotRename", StringComparison.InvariantCulture)))
235 | return false;
236 | //if (IsMethodContainsReflection(method))
237 | // return false;
238 | return true;
239 | }
240 |
241 | bool IsMethodContainsReflection(MethodDef method)
242 | {
243 | if (!method.HasBody)
244 | return false;
245 | var mbody = method.Body.Instructions;
246 | foreach (var instruction in mbody)
247 | {
248 | if (instruction.Operand != null && instruction.Operand.ToString().ToLower().Contains("reflection"))
249 | {
250 | return true;
251 | }
252 | }
253 | return false;
254 | }
255 |
256 | bool CanRenameField(string realTypeName, FieldDef field)
257 | {
258 | if (!RenameFields)
259 | return false;
260 | if (realTypeName.IndexOf("<>__AnonType", StringComparison.InvariantCulture) == 0) //Anonimous method make it hurt
261 | return false;
262 | if (field.IsRuntimeSpecialName || field.IsSpecialName)
263 | return false;
264 | if (field.DeclaringType.HasGenericParameters)
265 | return false;
266 | if (field.DeclaringType.IsSerializable && !field.IsNotSerialized)
267 | return false;
268 | if (field.IsPinvokeImpl)
269 | return false;
270 | if (field.IsLiteral && field.DeclaringType.IsEnum)
271 | return false;
272 | if (field.CustomAttributes.Any(a => a.TypeFullName.EndsWith("DoNotRename", StringComparison.InvariantCulture)))
273 | return false;
274 | return true;
275 | }
276 |
277 | bool CanRenameProperty(string realTypeName, PropertyDef prop)
278 | {
279 | if (!RenameProps)
280 | return false;
281 | if (prop.IsRuntimeSpecialName)
282 | return false;
283 | if (realTypeName.IndexOf("<>__AnonType", StringComparison.InvariantCulture) == 0) //Anonimous method make it hurt
284 | return false;
285 | if (prop.CustomAttributes.Any(a => a.TypeFullName.EndsWith("DoNotRename", StringComparison.InvariantCulture)))
286 | return false;
287 | return true;
288 | }
289 |
290 | bool CanRenameEvent(string realTypeName, EventDef ev)
291 | {
292 | if (!RenameEvents)
293 | return false;
294 | if (ev.IsRuntimeSpecialName || ev.IsSpecialName)
295 | return false;
296 | if (ev.CustomAttributes.Any(a => a.TypeFullName.EndsWith("DoNotRename", StringComparison.InvariantCulture)))
297 | return false;
298 | return true;
299 | }
300 |
301 | public string GenerateNewName(bool unicode = false)
302 | {
303 | Func getName = () =>
304 | {
305 | if (StrongRenaming)
306 | return Utils.RandomStringUnicode(rnd, 8);
307 | else
308 | return Utils.RandomStringHex(rnd, 8);
309 | };
310 |
311 | string str = getName();
312 | while (usedNames.Contains(str))
313 | {
314 | str = getName();
315 | }
316 | usedNames.Add(str);
317 | return str;
318 | }
319 | }
320 | }
321 |
--------------------------------------------------------------------------------
/AsertNet/Protection/Utils.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.Linq;
3 | using System.Text;
4 |
5 | namespace AsertNet.Protection
6 | {
7 | public class Utils
8 | {
9 |
10 | public static readonly char[] unicodeCharset = new char[] { }
11 | .Concat(Enumerable.Range(0x200b, 5).Select(ord => (char)ord))
12 | .Concat(Enumerable.Range(0x2029, 6).Select(ord => (char)ord))
13 | .Concat(Enumerable.Range(0x206a, 6).Select(ord => (char)ord))
14 | .Except(new[] { '\u2029' })
15 | .ToArray();
16 |
17 | public static readonly string hexCharset = "abcdef1234567890";
18 |
19 |
20 | public static string RandomStringUnicode(Random rnd, int length)
21 | {
22 | StringBuilder str = new StringBuilder(length);
23 | for (int i = 0; i < length; i++)
24 | {
25 | char c = unicodeCharset[rnd.Next(0, unicodeCharset.Length)];
26 | str.Append(c);
27 | }
28 | return str.ToString();
29 | }
30 |
31 | public static string RandomStringHex(Random rnd, int length)
32 | {
33 | StringBuilder str = new StringBuilder(length);
34 | for (int i = 0; i < length; i++)
35 | {
36 | char c = hexCharset[rnd.Next(0, hexCharset.Length)];
37 | str.Append(c);
38 | }
39 | return str.ToString();
40 | }
41 |
42 |
43 | }
44 | }
45 |
--------------------------------------------------------------------------------
/AsertNet/Signing/AssemblyInfo.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.Collections.Generic;
3 | using System.Diagnostics.CodeAnalysis;
4 | using System.IO;
5 | using Mono.Cecil;
6 |
7 | namespace AsertNet.Signing
8 | {
9 |
10 | [Serializable]
11 | public sealed class AssemblyInfo
12 | {
13 | public AssemblyInfo()
14 | {
15 | FilePath = string.Empty;
16 | }
17 |
18 | public string FilePath { get; internal set; }
19 | public byte[] Token { get; internal set; }
20 | public bool IsSigned { get; internal set; }
21 |
22 | public string HexToken
23 | {
24 | get
25 | {
26 | return BitConverter.ToString(Token).Replace("-", string.Empty);
27 | }
28 | }
29 |
30 |
31 | public static AssemblyInfo GetAssemblyInfo(string assemblyPath)
32 | {
33 | if (string.IsNullOrEmpty(assemblyPath))
34 | throw new ArgumentNullException(nameof(assemblyPath));
35 |
36 | if (!File.Exists(assemblyPath))
37 | throw new FileNotFoundException("Could not find provided assembly file.", assemblyPath);
38 |
39 | var a = AssemblyDefinition.ReadAssembly(assemblyPath, GetReadParameters(assemblyPath));
40 |
41 | return new AssemblyInfo()
42 | {
43 | FilePath = Path.GetFullPath(assemblyPath),
44 | IsSigned = (a.MainModule.Attributes & ModuleAttributes.StrongNameSigned) != 0,
45 | Token = a.Name.PublicKeyToken
46 | };
47 | }
48 |
49 | public static ReaderParameters GetReadParameters(string assemblyPath)
50 | {
51 | var resolver = new DefaultAssemblyResolver();
52 |
53 | if (!string.IsNullOrEmpty(assemblyPath) && File.Exists(assemblyPath))
54 | resolver.AddSearchDirectory(Path.GetDirectoryName(assemblyPath));
55 |
56 | ReaderParameters readParams = null;
57 |
58 | try
59 | {
60 | readParams = new ReaderParameters() { AssemblyResolver = resolver, ReadSymbols = File.Exists(Path.ChangeExtension(assemblyPath, ".pdb")) };
61 | }
62 | catch (InvalidOperationException)
63 | {
64 | readParams = new ReaderParameters() { AssemblyResolver = resolver };
65 | }
66 |
67 | return readParams;
68 | }
69 | }
70 |
71 | }
--------------------------------------------------------------------------------
/AsertNet/Signing/Signer.cs:
--------------------------------------------------------------------------------
1 | using System;
2 | using System.IO;
3 | using System.Reflection;
4 | using System.Security.Cryptography;
5 | using Mono.Cecil;
6 |
7 | namespace AsertNet.Signing
8 | {
9 | public static class Signer
10 | {
11 | public static AssemblyInfo SignAssembly(string assemblyPath)
12 | {
13 | if (string.IsNullOrEmpty(assemblyPath))
14 | throw new ArgumentNullException(nameof(assemblyPath));
15 |
16 | if (!File.Exists(assemblyPath))
17 | throw new FileNotFoundException("Could not find provided assembly file.", assemblyPath);
18 |
19 | bool writeSymbols = File.Exists(Path.ChangeExtension(assemblyPath, ".pdb"));
20 |
21 | // Get the assembly info and go from there.
22 | AssemblyInfo info = AssemblyInfo.GetAssemblyInfo(assemblyPath);
23 |
24 | // Don't sign assemblies with a strong-name signature.
25 | if (info.IsSigned)
26 | return info;
27 |
28 | AssemblyDefinition.ReadAssembly(assemblyPath, AssemblyInfo.GetReadParameters(assemblyPath))
29 | .Write(assemblyPath, new WriterParameters() { StrongNameKeyPair = GenerateStrongNameKeyPair(), WriteSymbols = writeSymbols });
30 |
31 | return AssemblyInfo.GetAssemblyInfo(assemblyPath);
32 | }
33 |
34 | public static StrongNameKeyPair GenerateStrongNameKeyPair()
35 | {
36 | using (var provider = new RSACryptoServiceProvider(1024, new CspParameters() { KeyNumber = 2 }))
37 | {
38 | return new StrongNameKeyPair(provider.ExportCspBlob(!provider.PublicOnly));
39 | }
40 | }
41 |
42 | }
43 | }
44 |
--------------------------------------------------------------------------------
/AsertNet/packages.config:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
1 | GNU GENERAL PUBLIC LICENSE
2 | Version 3, 29 June 2007
3 |
4 | Copyright (C) 2007 Free Software Foundation, Inc.
5 | Everyone is permitted to copy and distribute verbatim copies
6 | of this license document, but changing it is not allowed.
7 |
8 | Preamble
9 |
10 | The GNU General Public License is a free, copyleft license for
11 | software and other kinds of works.
12 |
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435 | 9. Acceptance Not Required for Having Copies.
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471 | 11. Patents.
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473 | A "contributor" is a copyright holder who authorizes use under this
474 | License of the Program or a work on which the Program is based. The
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477 | A contributor's "essential patent claims" are all patent claims
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535 |
536 | Nothing in this License shall be construed as excluding or limiting
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538 | otherwise be available to you under applicable patent law.
539 |
540 | 12. No Surrender of Others' Freedom.
541 |
542 | If conditions are imposed on you (whether by court order, agreement or
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548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
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551 |
552 | 13. Use with the GNU Affero General Public License.
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554 | Notwithstanding any other provision of this License, you have
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562 |
563 | 14. Revised Versions of this License.
564 |
565 | The Free Software Foundation may publish revised and/or new versions of
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567 | be similar in spirit to the present version, but may differ in detail to
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569 |
570 | Each version is given a distinguishing version number. If the
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573 | option of following the terms and conditions either of that numbered
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578 |
579 | If the Program specifies that a proxy can decide which future
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588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 |
635 | Copyright (C)
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | Copyright (C)
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
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/Libs/dnlib.dll:
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https://raw.githubusercontent.com/Agasper/asert-unity-protect-obfuscator/46a04ad9fa62d8e24ea857da086df5b28d1eb968/Libs/dnlib.dll
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/Libs/dnlib.pdb:
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/Libs/log4net.dll:
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https://raw.githubusercontent.com/Agasper/asert-unity-protect-obfuscator/46a04ad9fa62d8e24ea857da086df5b28d1eb968/Libs/log4net.dll
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/Libs/log4net.pdb:
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/README.md:
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1 | Unity build obfuscator
2 | =====
3 | License: *GNU GPL v3*
4 |
5 | Features:
6 | * Protecting/encrypting int, string constants
7 | * Renaming everything it can rename without affecting functionality
8 | * Adding checksum library verification
9 |
10 | ### How to use
11 |
12 | 1. Download latest release from https://github.com/Agasper/asert-unity-protect-obfuscator/releases
13 | 2. You need to locate two libraries *Assembly-CSharp.dll* and *UnityEngine.CoreModule.dll* within your Unity build.
14 | 3. Run
15 |
16 | ```
17 | mono ./AsertNet.exe --filename="Assembly-CSharp.dll" \
18 | --unitylib="UnityEngine.CoreModule.dll" \
19 | --hideintegers --encryptstrings \
20 | --antitamper --renameall
21 | ```
22 |
23 | 4. Thats all
24 |
25 | ### For Android builds
26 |
27 | First you need to unpack apk file with https://ibotpeaches.github.io/Apktool/
28 | Then obfuscate libraries and pack it back
29 |
30 | P.S. Don't forget to sign your APK again with a keystore
31 |
32 | ```
33 | ./apktool d apk.apk
34 | mono ./AsertNet.exe --filename="./apk/assets/bin/Data/Managed/Assembly-CSharp.dll" \
35 | --unitylib="./apk/assets/bin/Data/Managed/UnityEngine.CoreModule.dll" \
36 | --hideintegers --encryptstrings \
37 | --antitamper --renameall
38 | ./apktool-mac b apk -o result.apk
39 | jarsigner -keystore ./key.keystore -verbose result.apk "key name"
40 | ```
41 |
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