266 lines
12 KiB
C#
266 lines
12 KiB
C#
|
extern alias mc1;
|
|||
|
using System;
|
|||
|
using System.Collections.Generic;
|
|||
|
using System.IO;
|
|||
|
using System.Linq;
|
|||
|
using System.Numerics;
|
|||
|
using System.Reflection;
|
|||
|
using System.Security.Cryptography;
|
|||
|
using BrokenEvent.ILStrip;
|
|||
|
using mc1::ILRepacking;
|
|||
|
using Mono.Cecil;
|
|||
|
using Mono.Cecil.Cil;
|
|||
|
using MethodAttributes = Mono.Cecil.MethodAttributes;
|
|||
|
using ParameterAttributes = Mono.Cecil.ParameterAttributes;
|
|||
|
using TypeAttributes = Mono.Cecil.TypeAttributes;
|
|||
|
|
|||
|
namespace PostCompile
|
|||
|
{
|
|||
|
extern alias mc1;
|
|||
|
|
|||
|
internal static class Program
|
|||
|
{
|
|||
|
private static void Main(string[] args)
|
|||
|
{
|
|||
|
if (args.Length < 1)
|
|||
|
{
|
|||
|
Console.WriteLine("Assembly:");
|
|||
|
Console.Write("> ");
|
|||
|
args = new[] {Console.ReadLine()};
|
|||
|
}
|
|||
|
if (!File.Exists(args[0]))
|
|||
|
{
|
|||
|
Console.WriteLine("Invalid path");
|
|||
|
return;
|
|||
|
}
|
|||
|
byte[] assemblyData = GetOptimizedBytes(args[0]);
|
|||
|
byte[] encryptedData = Encrypt(assemblyData, out byte[] key);
|
|||
|
string baseKey = Base64(key);
|
|||
|
//Environment.CurrentDirectory = cd;
|
|||
|
AssemblyDefinition def = GenerateBuilder(encryptedData, baseKey, BitConverter.ToInt32(key.Take(4).ToArray(), 0), AssemblyDefinition.ReadAssembly(args[0]).MainModule.Kind);
|
|||
|
string outFile = $"{Path.GetFileNameWithoutExtension(args[0])}.builder{Path.GetExtension(args[0])}";
|
|||
|
def.Write(outFile);
|
|||
|
File.WriteAllText("key.txt", baseKey);
|
|||
|
File.WriteAllText("data.txt", $"{string.Join("\n", encryptedData.Select(s => $"cancer.Add({s});"))}");
|
|||
|
|
|||
|
Console.WriteLine("Testing crypto");
|
|||
|
CopyClass.Decrypt(encryptedData, Convert.FromBase64String(baseKey));
|
|||
|
|
|||
|
if (args.Length > 1 && args[1].Trim("-\\/".ToCharArray()).ToLower() == "run")
|
|||
|
{
|
|||
|
Console.WriteLine("Handing control to app");
|
|||
|
Console.WriteLine("--------------------------");
|
|||
|
Console.WriteLine();
|
|||
|
Assembly.LoadFrom(outFile).EntryPoint.Invoke(null, args.Length > 2 ? new object[] {args.Skip(2).ToArray()} : new object[] {null});
|
|||
|
Console.WriteLine();
|
|||
|
Console.WriteLine("--------------------------");
|
|||
|
Console.WriteLine("[SUCCESS] Program finished");
|
|||
|
Console.WriteLine("--------------------------");
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
private static MethodDefinition CopyMethod(Delegate name, TypeDefinition targetType)
|
|||
|
{
|
|||
|
string cd = Environment.CurrentDirectory;
|
|||
|
Environment.CurrentDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
|
|||
|
AssemblyDefinition def = AssemblyDefinition.ReadAssembly(typeof(Program).Assembly.Location);
|
|||
|
|
|||
|
MethodReference source = def.MainModule.Import(name.Method);
|
|||
|
|
|||
|
MethodDefinition sourceMethod = source.Resolve();
|
|||
|
MethodDefinition targetMethod = new MethodDefinition(name.Method.Name, sourceMethod.Attributes, def.MainModule.Import(source.ReturnType));
|
|||
|
ILProcessor sourceIL = sourceMethod.Body.GetILProcessor();
|
|||
|
|
|||
|
foreach (Instruction i in sourceMethod.Body.Instructions.ToList())
|
|||
|
{
|
|||
|
Instruction ci = i;
|
|||
|
if (i.Operand is MethodReference mref)
|
|||
|
ci = sourceIL.Create(i.OpCode, mref.Name == "Decrypt" ? targetType.Module.Import(targetType.Methods.First(s => s.Name == mref.Name)) : targetType.Module.Import(mref));
|
|||
|
else if (i.Operand is TypeReference tref) ci = sourceIL.Create(i.OpCode, targetType.Module.Import(tref));
|
|||
|
else if (i.Operand is FieldReference fref)
|
|||
|
ci = sourceIL.Create(i.OpCode, targetType.Module.Import(fref));
|
|||
|
else if (i.Operand is TypeDefinition tdef)
|
|||
|
ci = sourceIL.Create(i.OpCode, targetType.Module.Import(tdef));
|
|||
|
if (ci != i) sourceIL.Replace(i, ci);
|
|||
|
}
|
|||
|
targetMethod.Body = sourceMethod.Body;
|
|||
|
|
|||
|
foreach (VariableDefinition v in sourceMethod.Body.Variables.ToArray()) v.VariableType = targetType.Module.Import(v.VariableType);
|
|||
|
|
|||
|
targetMethod.Parameters.Clear();
|
|||
|
foreach (ParameterDefinition p in sourceMethod.Parameters)
|
|||
|
{
|
|||
|
ParameterDefinition np = new ParameterDefinition(p.Name, p.Attributes, targetType.Module.Import(p.ParameterType));
|
|||
|
targetMethod.Parameters.Add(np);
|
|||
|
}
|
|||
|
|
|||
|
targetMethod.Body.InitLocals = true;
|
|||
|
|
|||
|
targetType.Methods.Add(targetMethod);
|
|||
|
Environment.CurrentDirectory = cd;
|
|||
|
return targetMethod;
|
|||
|
}
|
|||
|
|
|||
|
private static AssemblyDefinition GenerateBuilder(byte[] encryptedData, string key, int rndStart, ModuleKind kind)
|
|||
|
{
|
|||
|
Random rnd = new Random(rndStart);
|
|||
|
string progName = rnd.GenerateRandomString();
|
|||
|
AssemblyDefinition definition = AssemblyDefinition.CreateAssembly(new AssemblyNameDefinition(progName, new Version(1, 0, 0, 0)), progName, kind);
|
|||
|
ModuleDefinition module = definition.MainModule;
|
|||
|
TypeDefinition programType = new TypeDefinition(progName, "Program", TypeAttributes.Class | TypeAttributes.Public, module.TypeSystem.Object);
|
|||
|
|
|||
|
module.Types.Add(programType);
|
|||
|
|
|||
|
MethodDefinition ctor = new MethodDefinition(".ctor", MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName, module.TypeSystem.Void);
|
|||
|
|
|||
|
ILProcessor il = ctor.Body.GetILProcessor();
|
|||
|
|
|||
|
il.Append(il.Create(OpCodes.Ldarg_0));
|
|||
|
|
|||
|
il.Append(il.Create(OpCodes.Call, module.Import(typeof(object).GetConstructor(Array.Empty<Type>()))));
|
|||
|
|
|||
|
il.Append(il.Create(OpCodes.Nop));
|
|||
|
il.Append(il.Create(OpCodes.Ret));
|
|||
|
|
|||
|
programType.Methods.Add(ctor);
|
|||
|
|
|||
|
CopyMethod((Func<byte[], byte[], byte[]>)CopyClass.Decrypt, programType);
|
|||
|
MethodDefinition run = CopyMethod((Action<byte[], string, string[]>)CopyClass.Run, programType);
|
|||
|
|
|||
|
MethodDefinition mainMethod = new MethodDefinition("Main",
|
|||
|
MethodAttributes.Public | MethodAttributes.Static, module.TypeSystem.Void);
|
|||
|
|
|||
|
programType.Methods.Add(mainMethod);
|
|||
|
|
|||
|
ParameterDefinition argsParameter = new ParameterDefinition("args",
|
|||
|
ParameterAttributes.None, module.Import(typeof(string[])));
|
|||
|
|
|||
|
mainMethod.Parameters.Add(argsParameter);
|
|||
|
mainMethod.Body.Variables.Add(new VariableDefinition(rnd.GenerateRandomString(), module.Import(typeof(List<byte>))));
|
|||
|
|
|||
|
il = mainMethod.Body.GetILProcessor();
|
|||
|
|
|||
|
il.Append(il.Create(OpCodes.Nop));
|
|||
|
|
|||
|
il.Append(il.Create(OpCodes.Newobj, module.Import(typeof(List<byte>).GetConstructor(new Type[0]))));
|
|||
|
il.Append(il.Create(OpCodes.Stloc_0));
|
|||
|
|
|||
|
for (int i = 0; i < encryptedData.Length; i++)
|
|||
|
{
|
|||
|
il.Emit(OpCodes.Ldloc_0);
|
|||
|
byte tmp = encryptedData[i];
|
|||
|
if (tmp >= -128 && tmp <= 127)
|
|||
|
il.Emit(OpCodes.Ldc_I4_S, (sbyte)tmp);
|
|||
|
else
|
|||
|
il.Emit(OpCodes.Ldc_I4, (int)tmp);
|
|||
|
il.Emit(OpCodes.Callvirt, module.Import(typeof(List<byte>).GetMethod("Add")));
|
|||
|
il.Emit(OpCodes.Nop);
|
|||
|
}
|
|||
|
|
|||
|
il.Emit(OpCodes.Ldloc_0);
|
|||
|
il.Emit(OpCodes.Callvirt, module.Import(typeof(List<byte>).GetMethod("ToArray")));
|
|||
|
il.Emit(OpCodes.Ldstr, key);
|
|||
|
il.Emit(OpCodes.Ldarg_0);
|
|||
|
il.Emit(OpCodes.Call, module.Import(run));
|
|||
|
|
|||
|
il.Append(il.Create(OpCodes.Nop));
|
|||
|
il.Append(il.Create(OpCodes.Ret));
|
|||
|
|
|||
|
definition.EntryPoint = mainMethod;
|
|||
|
|
|||
|
return definition;
|
|||
|
}
|
|||
|
|
|||
|
private static string GenerateRandomString(this Random rnd)
|
|||
|
{
|
|||
|
const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
|
|||
|
return new string(Enumerable.Repeat(chars, 12).Select(s => s[rnd.Next(s.Length)]).ToArray());
|
|||
|
}
|
|||
|
|
|||
|
private static byte[] GetOptimizedBytes(string path)
|
|||
|
{
|
|||
|
Environment.CurrentDirectory = Path.GetDirectoryName(path) ?? throw new ArgumentException("Path not found");
|
|||
|
string asmNameExt = Path.GetFileName(path);
|
|||
|
string asmName = Path.GetFileNameWithoutExtension(asmNameExt);
|
|||
|
string asmNameMerged = $"{asmName}.merged{Path.GetExtension(asmNameExt)}";
|
|||
|
string asmNameMinified = $"{asmName}.minified{Path.GetExtension(asmNameExt)}";
|
|||
|
Assembly asm = Assembly.LoadFrom(path);
|
|||
|
ILRepack repack = new ILRepack(new RepackOptions(new[]{"/internalize", $"/out:{asmNameMerged}", asmNameExt}.Concat(GetDependentFilesPass(asm, Environment.CurrentDirectory))));
|
|||
|
repack.Repack();
|
|||
|
ILStrip optimizer = new ILStrip(asmNameMerged);
|
|||
|
optimizer.MakeInternal();
|
|||
|
optimizer.ScanUsedClasses();
|
|||
|
optimizer.ScanUnusedClasses();
|
|||
|
optimizer.CleanupUnusedClasses();
|
|||
|
optimizer.CleanupUnusedResources();
|
|||
|
optimizer.CleanupUnusedReferences();
|
|||
|
optimizer.Save(asmNameMinified);
|
|||
|
optimizer.Dispose();
|
|||
|
File.Delete(asmNameMerged);
|
|||
|
byte[] result = File.ReadAllBytes(asmNameMinified);
|
|||
|
File.Delete(asmNameMinified);
|
|||
|
return result;
|
|||
|
}
|
|||
|
|
|||
|
private static string Base64(byte[] data) => Convert.ToBase64String(data);
|
|||
|
|
|||
|
private static byte[] Encrypt(byte[] data, out byte[] key)
|
|||
|
{
|
|||
|
key = Hash(data);
|
|||
|
if (key is null)
|
|||
|
throw new ArgumentException("Key must have valid value.", nameof(key));
|
|||
|
if (data is null)
|
|||
|
throw new ArgumentException("The text must have valid value.", nameof(data));
|
|||
|
|
|||
|
byte[] buffer = data;
|
|||
|
SHA512CryptoServiceProvider hash = new SHA512CryptoServiceProvider();
|
|||
|
byte[] aesKey = new byte[24];
|
|||
|
Buffer.BlockCopy(hash.ComputeHash(key), 0, aesKey, 0, 24);
|
|||
|
|
|||
|
using Aes aes = Aes.Create();
|
|||
|
if (aes == null)
|
|||
|
throw new ArgumentException("Parameter must not be null.", nameof(aes));
|
|||
|
|
|||
|
aes.Key = aesKey;
|
|||
|
|
|||
|
using ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);
|
|||
|
using MemoryStream resultStream = new MemoryStream();
|
|||
|
using (CryptoStream aesStream = new CryptoStream(resultStream, encryptor, CryptoStreamMode.Write))
|
|||
|
{
|
|||
|
using MemoryStream plainStream = new MemoryStream(buffer);
|
|||
|
plainStream.CopyTo(aesStream);
|
|||
|
}
|
|||
|
|
|||
|
byte[] result = resultStream.ToArray();
|
|||
|
byte[] combined = new byte[aes.IV.Length + result.Length];
|
|||
|
Array.ConstrainedCopy(aes.IV, 0, combined, 0, aes.IV.Length);
|
|||
|
Array.ConstrainedCopy(result, 0, combined, aes.IV.Length, result.Length);
|
|||
|
return combined;
|
|||
|
}
|
|||
|
|
|||
|
private static byte[] Hash(byte[] data)
|
|||
|
{
|
|||
|
using MD5 sec = new MD5CryptoServiceProvider();
|
|||
|
return sec.ComputeHash(data).ToArray();
|
|||
|
}
|
|||
|
|
|||
|
private static string[] GetDependentFilesPass(Assembly assembly, string poe)
|
|||
|
{
|
|||
|
return CollectDeps(assembly, poe).Select(s => Path.GetFullPath($"{s.Name}.dll")).Where(File.Exists)
|
|||
|
.ToArray();
|
|||
|
}
|
|||
|
|
|||
|
private static AssemblyName[] CollectDeps(Assembly assembly, string poe)
|
|||
|
{
|
|||
|
List<AssemblyName> tmp = assembly.GetReferencedAssemblies().ToList();
|
|||
|
int i = 0;
|
|||
|
while (i < tmp.Count())
|
|||
|
{
|
|||
|
Assembly tmp1 = Assembly.Load(tmp[i]);
|
|||
|
tmp.AddRange(tmp1.GetReferencedAssemblies().Where(s => Path.GetFullPath(s.Name).StartsWith(poe) && !tmp.Any(a => a.Name == s.Name)));
|
|||
|
i++;
|
|||
|
}
|
|||
|
return tmp.ToArray();
|
|||
|
}
|
|||
|
}
|
|||
|
}
|