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CrustySean · May 2, 2021 · 1f9cb6f · 1f9cb6f
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diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,48 @@
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# Switch
+/build
+*.elf
+*.nso
+*.nro
+*.nsp
+*.nacp
+*.npdm
+*.pfs0 
+
+# VS
+/.vs
+/packages
+/BCAT-Toolbox/bin
+/BCAT-Toolbox/obj
diff --git a/BCAT-Toolbox.sln b/BCAT-Toolbox.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30517.126
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BCAT-Toolbox", "BCAT-Toolbox\BCAT-Toolbox.csproj", "{796200EB-5DBA-4504-A3D2-946116335D5E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{796200EB-5DBA-4504-A3D2-946116335D5E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{796200EB-5DBA-4504-A3D2-946116335D5E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{796200EB-5DBA-4504-A3D2-946116335D5E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{796200EB-5DBA-4504-A3D2-946116335D5E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {F9CE1C8A-80B9-4610-880B-E765DC2BE6BA}
+	EndGlobalSection
+EndGlobal
diff --git a/BCAT-Toolbox/AesCrypto.cs b/BCAT-Toolbox/AesCrypto.cs
@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+using System.IO;
+
+namespace BcatToolbox
+{
+    public class AesCrypto
+    {
+        public static byte[] PerformAesCTR(byte[] SourceBuffer, int Offset, int Size, byte[] key, byte[] iv)
+        {
+            byte[] encCounter = new byte[0x10];
+            byte[] decryptedBuffer = new byte[Size];
+            byte[] ctr = iv;
+
+            Aes aes = Aes.Create();
+            aes.Mode = CipherMode.ECB;
+            aes.BlockSize = 128;
+            aes.KeySize = key.Length * 8;
+            aes.Key = key;
+
+            for (int i = Offset; i < Size; i += 0x10)
+            {
+                using (var transform = aes.CreateEncryptor())
+                {
+
+                    int transed = 0;
+                    for (int j = 0; j < 0x10; j += transed)
+                    {
+                        transed = transform.TransformBlock(ctr, j, 0x10, encCounter, j);
+                    }
+
+                    int rest = Size - i;
+                    if (rest > 0x10) rest = 0x10;
+
+                    //xor encrypted counter with ciphertext
+                    for (int j = 0; j < rest; j++)
+                    {
+                        decryptedBuffer[i + j] = (byte)(encCounter[j] ^ SourceBuffer[i + j]);
+                    }
+                    //increment counter
+                    for (var j = ctr.Length - 1; j >= 0; j--)
+                    {
+                        if (++ctr[j] != 0)
+                            break;
+                    }
+                }
+            }
+
+            return decryptedBuffer;
+        }
+    }
+}
diff --git a/BCAT-Toolbox/App.config b/BCAT-Toolbox/App.config
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <startup>
+    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
+  </startup>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Tasks.Extensions" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.2.0.1" newVersion="4.2.0.1" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Buffers" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.3.0" newVersion="4.0.3.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="Microsoft.Bcl.AsyncInterfaces" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Runtime.CompilerServices.Unsafe" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
+      </dependentAssembly>
+      <probing privatePath="lib;libs" xmlns="" />
+    </assemblyBinding>
+  </runtime>
+</configuration>