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Program.cs
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Program.cs
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using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using dnlib.DotNet;
using dnlib.DotNet.Emit;
using dnlib.DotNet.Writer;
namespace LoGeeK
{
class Program
{
public static ModuleDefMD asm;
public static string path;
public static int stringFixed, failedStrings, removedNeg, fixedMathCalls, failedMathCalls;
static void Main(string[] args)
{
Console.Title = "LoGeek";
Console.WriteLine();
Console.WriteLine(" LoGeek | LoGiC.NET Deobfuscator by misonothx");
Console.WriteLine(" |- https://github.com/miso-xyz/LoGeek/");
Console.WriteLine();
try
{
asm = ModuleDefMD.Load(args[0]);
}
catch { Console.ForegroundColor = ConsoleColor.Red; Console.WriteLine(" Failed to load app! (DOS Header might have been stripped out)"); goto end; }
path = args[0];
Console.ForegroundColor = ConsoleColor.Magenta;
Console.WriteLine(" Obfuscator Version Used: " + getLogicVersion());
Console.WriteLine();
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine(" Sorting out methods...");
CleanMethods();
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine(" Cleaning up Various Junk...");
removeJunk();
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine(" Cleaning up Math Obfuscation...");
fixMath();
Console.WriteLine();
Console.WriteLine(" Results:");
Console.ForegroundColor = ConsoleColor.Green;
Console.Write(" |- " + stringFixed + " Strings Fixed! ");
Console.ForegroundColor = ConsoleColor.DarkRed;
Console.WriteLine("(" + failedStrings + " failed)");
Console.ForegroundColor = ConsoleColor.Cyan;
Console.Write(" |- " + fixedMathCalls + " Math Calls Fixed! ");
Console.ForegroundColor = ConsoleColor.DarkRed;
Console.Write("(" + failedMathCalls + " failed, ");
Console.ForegroundColor = ConsoleColor.DarkCyan;
Console.WriteLine(removedNeg + " Neg instruction removed)");
Console.WriteLine();
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine(" Now saving...");
ModuleWriterOptions moduleWriterOptions = new ModuleWriterOptions(asm);
moduleWriterOptions.MetadataOptions.Flags |= MetadataFlags.PreserveAll;
moduleWriterOptions.Logger = DummyLogger.NoThrowInstance;
NativeModuleWriterOptions nativeModuleWriterOptions = new NativeModuleWriterOptions(asm, true);
nativeModuleWriterOptions.MetadataOptions.Flags |= MetadataFlags.PreserveAll;
nativeModuleWriterOptions.Logger = DummyLogger.NoThrowInstance;
if (asm.IsILOnly) { asm.Write(Path.GetFileNameWithoutExtension(path) + "-LoGeek" + Path.GetExtension(path)); }
else { asm.NativeWrite(Path.GetFileNameWithoutExtension(path) + "-LoGeek" + Path.GetExtension(path)); }
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine(" Successfully cleaned! (saved as '" + Path.GetFileNameWithoutExtension(path) + "-LoGeek" + Path.GetExtension(path) + "')");
end:
Console.ResetColor();
Console.Write(" Press any key to close...");
Console.ReadKey();
}
static void CleanMethods()
{
foreach (TypeDef type in asm.Types)
{
for (int x = 0; x < type.Methods.Count; x++)
{
MethodDef methods = type.Methods[x];
for (int x_ = 0; x_ < methods.Body.Instructions.Count; x_++)
{
Instruction inst = methods.Body.Instructions[x_];
switch (inst.OpCode.Code)
{
case Code.Newobj:
if (inst.Operand.ToString().Contains("System.EntryPointNotFoundException")) { methods.Name = "AntiTamper"; }
break;
case Code.Neg:
methods.Body.Instructions.RemoveAt(x_);
removedNeg++;
x_--;
continue;
case Code.Callvirt:
if (inst.Operand.ToString().Contains("System.Text.StringBuilder::Append") && methods.Body.Instructions[x_ - 1].OpCode.Equals(OpCodes.Conv_U2)) { methods.Name = "StringDecryption"; }
break;
}
}
}
}
}
static string getLogicVersion()
{
string result = null;
for (int x = 0; x < asm.CustomAttributes.Count; x++)
{
CustomAttribute CA = asm.CustomAttributes[x];
foreach (CAArgument constrArgs in CA.ConstructorArguments)
{
if (constrArgs.Value.ToString().Contains("LoGiC.NET")) { asm.CustomAttributes.RemoveAt(x); x--; result = constrArgs.Value.ToString().Replace("Obfuscated with ", null).Replace("version ", "v");}
}
}
return result.Remove(result.Length-1);
}
public static void objectUpdatedPrint(string frontText, string from, string to, string type = "")
{
Console.ForegroundColor = ConsoleColor.Green;
Console.Write(frontText + " ('");
Console.ForegroundColor = ConsoleColor.DarkYellow;
Console.Write(from);
Console.ForegroundColor = ConsoleColor.Green;
Console.Write("'");
Console.ForegroundColor = ConsoleColor.White;
Console.Write(" -> ");
Console.ForegroundColor = ConsoleColor.Green;
Console.Write("'");
Console.ForegroundColor = ConsoleColor.DarkMagenta;
Console.Write(to);
Console.ForegroundColor = ConsoleColor.Green;
Console.Write("')");
if (type != "") { Console.WriteLine(type); } else { Console.WriteLine(); }
}
static void removeJunk()
{
objectUpdatedPrint(" Module Renamed!", asm.Name, Path.GetFileName(path));
asm.Name = Path.GetFileName(path);
objectUpdatedPrint(" Entrypoint Renamed!", asm.EntryPoint.DeclaringType.Name + "::" + asm.EntryPoint.Name, "Entrypoint::Main");
asm.EntryPoint.DeclaringType.Name = "Entrypoint";
asm.EntryPoint.Name = "Main";
for (int x_type = 0; x_type < asm.Types.Count; x_type++)
{
Console.ForegroundColor = ConsoleColor.Green;
TypeDef type = asm.Types[x_type];
if (type.BaseType != null) { if (type.BaseType.Name == "Attribute") { Console.WriteLine(" Removed AntiDe4dot (" + type.Name + ")!"); asm.Types.Remove(type); x_type--; continue; } }
for (int x = 0; x < type.Methods.Count; x++)
{
MethodDef methods = type.Methods[x];
methods.Body.KeepOldMaxStack = true;
for (int x_ = 0; x_ < methods.Body.Instructions.Count; x_++)
{
Instruction inst = methods.Body.Instructions[x_];
switch (inst.OpCode.Code)
{
case Code.Ldstr:
try
{
string og_string = inst.Operand.ToString();
Instruction secondPart = methods.Body.Instructions[x_ + 2];
//for (int x_inst_temp = x_; x_inst_temp < methods.Body.Instructions.Count; x_inst_temp++)
//{
// Instruction inst_ = methods.Body.Instructions[x_inst_temp];
// if (inst_.OpCode.Equals(OpCodes.Call))
// {
// if (inst_.Operand.ToString().Contains("StringDecryption"))
// {
// secondPart = methods.Body.Instructions[x_inst_temp-4];
// break;
// }
// }
//}
//if (secondPart == null) { }
string dec_String = StringDecryptor(og_string, secondPart.GetLdcI4Value());
inst.Operand = dec_String;
stringFixed++;
//objectUpdatedPrint(" Fixed String!", og_string, dec_String);
//methods.Body.Instructions.RemoveAt(temp_inst_x);
//for (int temp_inst_x = x_+1; temp_inst_x < methods.Body.Instructions.IndexOf(secondPart)+2; temp_inst_x++)
//{
// methods.Body.Instructions.RemoveAt(temp_inst_x);
//}
break;
}
catch
{ //Console.ForegroundColor = Console.ForegroundColor = ConsoleColor.Red; Console.WriteLine(" Coudn't fix string");
failedStrings++;
}
break;
case Code.Call:
if (inst.Operand.ToString().Contains("AntiTamper")) { methods.Body.Instructions.Remove(inst); x_--; }
break;
case Code.Ldc_I4:
if (methods.Body.Instructions.Count == 2) { Console.ForegroundColor = ConsoleColor.Green; Console.WriteLine(" Removed Junk Method ('" + methods.Name + "')!"); type.Methods.Remove(methods); x--; }
break;
}
}
}
}
foreach (TypeDef type in asm.Types)
{
for (int x = 0; x < type.Methods.Count; x++)
{
MethodDef methods = type.Methods[x];
if (methods.Name == "AntiTamper") { Console.ForegroundColor = ConsoleColor.Green; Console.WriteLine(" Removed AntiTamper Protection!"); type.Methods.RemoveAt(x); x--; continue; }
}
}
}
public static void fixMath()
{
foreach (TypeDef type in asm.Types)
{
for (int x = 0; x < type.Methods.Count; x++)
{
MethodDef methods = type.Methods[x];
methods.Body.Instructions.OptimizeBranches();
methods.Body.Instructions.SimplifyBranches();
//while (stillHasMath(methods))
//{
for (int x_ = 0; x_ < methods.Body.Instructions.Count; x_++)
{
Instruction inst = methods.Body.Instructions[x_];
switch (inst.OpCode.Code)
{
case Code.Call:
if (inst.Operand.ToString().Contains("System.Math::"))
{
try
{
switch (((MemberRef)inst.Operand).Name)
{
case "Abs":
//if (!methods.Body.Instructions[x_ - 1].OpCode.ToString().Contains("ldc.i4")) { break; }
methods.Body.Instructions[x_ - 1].Operand = Math.Abs(Convert.ToInt32(methods.Body.Instructions[x_ - 1].Operand.ToString()));
methods.Body.Instructions.RemoveAt(x_);
x_--;
fixedMathCalls++;
break;
case "Min":
//if (!methods.Body.Instructions[x_ - 1].OpCode.ToString().Contains("ldc.i4") || !methods.Body.Instructions[x_ - 2].OpCode.ToString().Contains("ldc.i4")) { break; }
int l = 0; int r = 0;
if (methods.Body.Instructions[x_ - 1].ToString() == int.MaxValue.ToString()) { l = int.MaxValue; } else { Convert.ToInt32(methods.Body.Instructions[x_ - 1].GetLdcI4Value()); }
if (methods.Body.Instructions[x_ - 2].ToString() == int.MaxValue.ToString()) { r = int.MaxValue; } else { Convert.ToInt32(methods.Body.Instructions[x_ - 2].GetLdcI4Value()); }
methods.Body.Instructions[x_ - 2].Operand = Math.Min(l, r);
methods.Body.Instructions.RemoveAt(x_ - 1);
methods.Body.Instructions.RemoveAt(x_ - 1);
//x_ -= 2;
fixedMathCalls++;
break;
}
}
catch { failedMathCalls++; }
}
break;
}
}
//}
}
}
}
public static bool stillHasMath(MethodDef methods)
{
for (int x_ = 0; x_ < methods.Body.Instructions.Count; x_++)
{
Instruction inst = methods.Body.Instructions[x_];
switch (inst.OpCode.Code)
{
case Code.Call:
if (inst.Operand.ToString().Contains("System.Math::"))
{
return true;
}
break;
}
}
return false;
}
public static string StringDecryptor(string data, int key)
{
StringBuilder stringBuilder = new StringBuilder();
foreach (char c in data.ToCharArray())
{
stringBuilder.Append((char)((int)c - key));
}
return stringBuilder.ToString();
}
}
}