initial commit

2026-08-27 11:21:58 -06:00
commit c21fb61050
336 changed files with 74161 additions and 0 deletions
@@ -0,0 +1,86 @@
+using System.Linq;
+using dnlib.DotNet;
+using dnlib.DotNet.Emit;
+using Obfuscator.Helper;
+
+namespace Obfuscator.Obfuscator.ConstMelting;
+
+internal class ConstMelting
+{
+	public static void Execute(ModuleDef moduleDef)
+	{
+		TypeDef[] array = moduleDef.Types.ToArray();
+		for (int i = 0; i < array.Length; i++)
+		{
+			MethodDef[] array2 = array[i].Methods.ToArray();
+			foreach (MethodDef methodDef in array2)
+			{
+				ReplaceStringLiterals(methodDef);
+				ReplaceIntLiterals(methodDef);
+			}
+		}
+	}
+
+	private static void ReplaceStringLiterals(MethodDef methodDef)
+	{
+		if (!CanObfuscate(methodDef))
+		{
+			return;
+		}
+		foreach (Instruction instruction in methodDef.Body.Instructions)
+		{
+			if (instruction.OpCode == OpCodes.Ldstr)
+			{
+				MethodDef methodDef2 = new MethodDefUser(Methods.GenerateString(), MethodSig.CreateStatic(methodDef.DeclaringType.Module.CorLibTypes.String), MethodImplAttributes.IL, MethodAttributes.Public | MethodAttributes.Static | MethodAttributes.HideBySig)
+				{
+					Body = new CilBody()
+				};
+				methodDef2.Body.Instructions.Add(new Instruction(OpCodes.Ldstr, instruction.Operand.ToString()));
+				methodDef2.Body.Instructions.Add(new Instruction(OpCodes.Ret));
+				methodDef.DeclaringType.Methods.Add(methodDef2);
+				instruction.OpCode = OpCodes.Call;
+				instruction.Operand = methodDef2;
+			}
+		}
+	}
+
+	private static void ReplaceIntLiterals(MethodDef methodDef)
+	{
+		if (!CanObfuscate(methodDef))
+		{
+			return;
+		}
+		foreach (Instruction instruction in methodDef.Body.Instructions)
+		{
+			if (instruction.OpCode == OpCodes.Ldc_I4)
+			{
+				MethodDef methodDef2 = new MethodDefUser(Methods.GenerateString(), MethodSig.CreateStatic(methodDef.DeclaringType.Module.CorLibTypes.Int32), MethodImplAttributes.IL, MethodAttributes.Public | MethodAttributes.Static | MethodAttributes.HideBySig)
+				{
+					Body = new CilBody()
+				};
+				methodDef2.Body.Instructions.Add(new Instruction(OpCodes.Ldc_I4, instruction.GetLdcI4Value()));
+				methodDef2.Body.Instructions.Add(new Instruction(OpCodes.Ret));
+				methodDef.DeclaringType.Methods.Add(methodDef2);
+				instruction.OpCode = OpCodes.Call;
+				instruction.Operand = methodDef2;
+			}
+		}
+	}
+
+	public static bool CanObfuscate(MethodDef methodDef)
+	{
+		if (!methodDef.HasBody)
+		{
+			return false;
+		}
+		if (!methodDef.Body.HasInstructions)
+		{
+			return false;
+		}
+		if (methodDef.DeclaringType.IsGlobalModuleType)
+		{
+			return false;
+		}
+		return true;
+	}
+}