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Fix for LicenseType
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LicenseType on newer version seems to have changed it's ReturnType to string so i added a check to prevent issues related to #3
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@0x11DFE
0x11DFE committed Nov 4, 2022
1 parent 66e03e4 commit 0bbb6c2
Showing 1 changed file with 62 additions and 67 deletions.
129 changes: 62 additions & 67 deletions src/NetLimiter_Patcher/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
using System.Security.Principal;
using System.Threading;
using dnlib.DotNet;
using dnlib.DotNet.Emit;
using dnlib.DotNet.Writer;
using OpCodes = dnlib.DotNet.Emit.OpCodes;

Expand Down Expand Up @@ -40,9 +41,8 @@ private static void SetupInstruction(string message = null)
// Else asks if it should patch automatically
Console.Write(
$"Successfully found the application directory at '{_supposedDirectory}'\nAre you willing to proceed to an automatic patch?\n\n0: No\n1: Yes\n# ");
var choice = Console.ReadKey().Key;

switch (choice)

switch (Console.ReadKey().Key)
{
case ConsoleKey.D0:
case ConsoleKey.NumPad0:
Expand Down Expand Up @@ -118,72 +118,67 @@ private static void PatchApp(string inputModulePath, string outputModulePath)
// Loop true methods
foreach (var method in type.Methods)
{
// Unlock features
// We are doing so by changing the ProductCode which is getting checked and unlocking features
// At NLClientApp.Core.dll NLClientApp.Core.ViewModels.MainVM::UpdateSupportedFeatures()
if (method.Name == "get_ProductCode")
{
Console.WriteLine($"Patching: {method.FullName}");
var methodInstr = method.Body.Instructions;

methodInstr.Clear();
methodInstr.Add(OpCodes.Ldstr.ToInstruction("nl4pro"));
methodInstr.Add(OpCodes.Ret.ToInstruction());
}

// Change license quantity to something more leet
if (method.Name == "get_Quantity")
if (method.HasBody)
{
Console.WriteLine($"Patching: {method.FullName}");
var methodInstr = method.Body.Instructions;

methodInstr.Clear();
methodInstr.Add(OpCodes.Ldc_I4.ToInstruction(1337));
methodInstr.Add(OpCodes.Ret.ToInstruction());
}

// Change default license type to enterprise
if (method.Name == "get_LicenseType")
{
Console.WriteLine($"Patching: {method.FullName}");
var methodInstr = method.Body.Instructions;

methodInstr.Clear();
methodInstr.Add(OpCodes.Ldc_I4_2.ToInstruction());
methodInstr.Add(OpCodes.Ret.ToInstruction());
}

// Change default license registration name
if (method.Name == "get_RegistrationName")
{
Console.WriteLine($"Patching: {method.FullName}");
var methodInstr = method.Body.Instructions;

methodInstr.Clear();
methodInstr.Add(OpCodes.Ldstr.ToInstruction(_registrationName));
methodInstr.Add(OpCodes.Ret.ToInstruction());
}

// Force IsRegistered
if (method.Name == "get_IsRegistered")
{
Console.WriteLine($"Patching: {method.FullName}");
var methodInstr = method.Body.Instructions;

methodInstr.Clear();
methodInstr.Add(OpCodes.Ldc_I4_1.ToInstruction());
methodInstr.Add(OpCodes.Ret.ToInstruction());
}

// Disable Expiration
if (method.Name == "get_HasExpiration" || method.Name == "get_IsExpired")
{
Console.WriteLine($"Patching: {method.FullName}");
var methodInstr = method.Body.Instructions;

methodInstr.Clear();
methodInstr.Add(OpCodes.Ldc_I4_0.ToInstruction());
methodInstr.Add(OpCodes.Ret.ToInstruction());

switch (method.Name)
{
// Unlock features
// We are doing so by changing the ProductCode which is getting checked and unlocking features
// At NLClientApp.Core.dll NLClientApp.Core.ViewModels.MainVM::UpdateSupportedFeatures()
case "get_ProductCode":
Console.WriteLine($"Patching: {method.FullName}");
methodInstr.Clear();
methodInstr.Add(OpCodes.Ldstr.ToInstruction("nl4pro"));
methodInstr.Add(OpCodes.Ret.ToInstruction());
break;
case "get_Quantity":
Console.WriteLine($"Patching: {method.FullName}");
methodInstr.Clear();
methodInstr.Add(OpCodes.Ldc_I4.ToInstruction(1337));
methodInstr.Add(OpCodes.Ret.ToInstruction());
break;
// Change default license type to enterprise
case "get_LicenseType":
// ref: https://github.com/Mrakovic-ORG/NetLimiter_Patcher/issues/3
// TODO: Update sig for version >= 5.0
if (method.ReturnType.TypeName != "String")
{
Console.WriteLine($"Patching: {method.FullName}");
methodInstr.Clear();
methodInstr.Add(OpCodes.Ldc_I4_2.ToInstruction());
methodInstr.Add(OpCodes.Ret.ToInstruction());
}
break;
case "get_RegistrationName":
Console.WriteLine($"Patching: {method.FullName}");
methodInstr.Clear();
methodInstr.Add(OpCodes.Ldstr.ToInstruction(_registrationName));
methodInstr.Add(OpCodes.Ret.ToInstruction());
break;
case "get_IsRegistered":
Console.WriteLine($"Patching: {method.FullName}");
methodInstr.Clear();
methodInstr.Add(OpCodes.Ldc_I4_1.ToInstruction());
methodInstr.Add(OpCodes.Ret.ToInstruction());
break;
// Import the MaxValue field from DateTime as return
case "get_Expiration":
Console.WriteLine($"Patching: {method.FullName}");
methodInstr.Clear();
var importer = new Importer(module);
methodInstr.Add(OpCodes.Ldsfld.ToInstruction(importer.Import(typeof(DateTime).GetField("MaxValue"))));
methodInstr.Add(OpCodes.Ret.ToInstruction());
break;
case "get_HasExpiration":
case "get_IsExpired":
Console.WriteLine($"Patching: {method.FullName}");
methodInstr.Clear();
methodInstr.Add(OpCodes.Ldc_I4_0.ToInstruction());
methodInstr.Add(OpCodes.Ret.ToInstruction());
break;
}
}
}
}
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