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v1.3正式更新,支持自定义密钥和配置文件功能
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@SummerofOrange
SummerofOrange committed Oct 30, 2022
1 parent 926ee50 commit 146fc6a
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Showing 16 changed files with 4,761 additions and 83 deletions.
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18 changes: 18 additions & 0 deletions O&Z_IL2CPP_Security/CPP.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace O_Z_IL2CPP_Security
{
public class CPP
{
public string retsrc;
public CPP(string src,IL2CPP_Version ver,int key,int skip)
{
retsrc = src.Replace("*|*|*#skip#*|*|*", skip.ToString());
retsrc = retsrc.Replace("*|*|*#key#*|*|*", key.ToString());
}
}
}
20 changes: 16 additions & 4 deletions O&Z_IL2CPP_Security/Crypt.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -491,21 +491,21 @@ public byte[] cryptedHeader()

public static class Crypt
{
public static List<byte[]> Cryptstring(List<byte[]> bytes)
public static List<byte[]> Cryptstring(List<byte[]> bytes,int key)
{
List<byte[]> result = new List<byte[]>();
foreach (byte[] b in bytes)
{
result.Add(CryptByte(b));
result.Add(CryptByte(b, key));
}
return result;
}
public static byte[] CryptByte(byte[] b)
public static byte[] CryptByte(byte[] b,int key)
{
byte[] result = new byte[b.Length];
for(int i = 0; i < b.Length; i++)
{
result[i] = (byte)(b[i]^114514);
result[i] = (byte)(b[i]^ key);
}
return result;
}
Expand All @@ -523,6 +523,18 @@ public static byte[] CryptHeader(byte[] data,IL2CPP_Version ver)
writer.Write(ret);
return Tools.StreamToBytes(stream);
}
public static byte[] CryptWithSkipNULL(byte[] b, int skip, int key)
{
byte[] result = new byte[b.Length];
for (int i = 0; i < b.Length; i++)
{
if (b[i] != 0 && b[i] != skip)
result[i] = (byte)(b[i] ^ key);
else
result[i] = b[i];
}
return result;
}
}
public static class AssetBundleCrypt
{
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2 changes: 1 addition & 1 deletion O&Z_IL2CPP_Security/O&Z_IL2CPP_Security.csproj.user
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
<DebuggerFlavor>ProjectDebugger</DebuggerFlavor>
</PropertyGroup>
<PropertyGroup>
<ActiveDebugProfile>O&amp;Z_IL2CPP_Security</ActiveDebugProfile>
<ActiveDebugProfile>Generate</ActiveDebugProfile>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
<DebuggerFlavor>ProjectDebugger</DebuggerFlavor>
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142 changes: 93 additions & 49 deletions O&Z_IL2CPP_Security/Progarm.cs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,4 @@
//Unity IL2CPP Version 24.5
using O_Z_IL2CPP_Security;
using O_Z_IL2CPP_Security;
using System.Reflection;
using System.Text;
using System.Security.Cryptography;
Expand All @@ -8,7 +7,16 @@
List<byte[]> StringLiteraBytes_Crypted = new List<byte[]>();
string OpenFilePath;
byte[]? metadata_origin = null;
if(!File.Exists("Config.json"))

Console.WriteLine("O&Z_IL2CPP_Security");

if (args.Length == 0)
{
Help();
return;
}

if (!File.Exists("Config.json"))
{
Console.WriteLine("Config.json not found!");
Console.WriteLine("正在生成默认配置文件...");
Expand All @@ -22,16 +30,18 @@
if (File.Exists("Config.json")) Console.WriteLine("已重新生成默认配置文件,..Done!");
}
JsonManager jsonManager = new JsonManager("Config.json");
if (args.Length == 0)

if (args[0] == "Generate")
{
Help();
_Generate();
Console.WriteLine("Done!");
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
return;
}
else
{
OpenFilePath = args[0];
}
Console.WriteLine("O&Z_IL2CPP_Security");

OpenFilePath = args[0];

Console.WriteLine("Loading Meatadata:" + OpenFilePath);

switch(args[1])
Expand All @@ -46,21 +56,36 @@
return;
void _Crypt()
{
Console.WriteLine("正在执行加密...");
IL2CPP_Version ver;
if (!File.Exists(OpenFilePath))
{
Console.WriteLine("File is not EXISTS!");
return;
}
metadata_origin = File.ReadAllBytes(OpenFilePath);
if (!CheckMetadataFile()) return;
if (!CheckMetadataFile())
{
Console.WriteLine("这不是一个Metadata文件!");
return;
}
jsonManager = new JsonManager("Config.json");

switch(jsonManager.index.Version)
{
case "24.4": ver = IL2CPP_Version.V24_4; break;
case "28": ver = IL2CPP_Version.V28; break;
default: Console.WriteLine("Error!"); return;
case "24.4":
{
ver = IL2CPP_Version.V24_4;
Console.WriteLine("Metadata版本:24.4");
}
break;
case "28":
{
ver = IL2CPP_Version.V28;
Console.WriteLine("Metadata版本:28");
}
break;
default: Console.WriteLine("版本错误!请确保你配置了正确且受支持的Metadata版本!(24.4 / 28)"); return;
}
object Loader;
if (ver == IL2CPP_Version.V24_4)
Expand All @@ -72,15 +97,21 @@ void _Crypt()
Console.WriteLine("Input version Error!");
return;
}
Console.WriteLine("正在创建O&Z Metadata...");
Metadata metadata = new Metadata(Loader.GetType().GetField("metadatastream").GetValue(Loader) as Stream, Loader.GetType().GetField("Header").GetValue(Loader).GetType(), Loader.GetType().GetField("Header").GetValue(Loader), ver);
Console.WriteLine("正在加密StringLiteral...");
StringLiteraBytes = metadata.GetBytesFromStringLiteral(metadata.stringLiterals);
StringLiteraBytes_Crypted = Crypt.Cryptstring(StringLiteraBytes);
Console.WriteLine("正在加密String...");
StringLiteraBytes_Crypted = Crypt.Cryptstring(StringLiteraBytes,jsonManager.index.key);
byte[] allstring = metadata.GetAllStringFromMeta();
Stream stream = metadata.SetCryptedStreamToMetadata(StringLiteraBytes_Crypted, CryptB(allstring,(byte)Tools.CheckNull(jsonManager.index.key), jsonManager.index.key),ver);
Console.WriteLine("正在构建新的Metadata文件...");
Stream stream = metadata.SetCryptedStreamToMetadata(StringLiteraBytes_Crypted, Crypt.CryptWithSkipNULL(allstring,(byte)Tools.CheckNull(jsonManager.index.key), jsonManager.index.key),ver);
byte[] tmp = Tools.StreamToBytes(stream);
File.WriteAllBytes(args[2], tmp);


Console.WriteLine("正在写入文件...");
File.WriteAllBytes(args[2], tmp);
Console.WriteLine("Done!");
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
void _default()
{
Expand All @@ -92,6 +123,39 @@ void _Read()
{
return;
}
void _Generate()
{
jsonManager = new JsonManager("Config.json");
string src;
CPP cpp;
Console.WriteLine("正在创建密钥组件...");
Console.WriteLine("您的Metadata版本为:" + jsonManager.index.Version);
Console.WriteLine("您的密钥为:" + jsonManager.index.key);
if (!Directory.Exists("Generation/" + jsonManager.index.Version + "/libil2cpp/vm/"))
Directory.CreateDirectory("Generation/" + jsonManager.index.Version + "/libil2cpp/vm/");
if (jsonManager.index.Version == "24.4")
{
src = File.ReadAllText("src-res/" + jsonManager.index.Version + "/MetadataCache.cpp");
cpp = new CPP(src, IL2CPP_Version.V24_4, jsonManager.index.key, (byte)Tools.CheckNull(jsonManager.index.key));
File.WriteAllText("Generation/" + jsonManager.index.Version + "/libil2cpp/vm/MetadataCache.cpp", cpp.retsrc);
File.WriteAllLines("Generation/" + jsonManager.index.Version + "/libil2cpp/il2cpp-metadata.h", File.ReadAllLines("src-res/" + jsonManager.index.Version + "/il2cpp-metadata.h"));
}
else if (jsonManager.index.Version == "28")
{
src = File.ReadAllText("src-res/" + jsonManager.index.Version + "/GlobalMetadata.cpp");
cpp = new CPP(src, IL2CPP_Version.V24_4, jsonManager.index.key, (byte)Tools.CheckNull(jsonManager.index.key));
File.WriteAllText("Generation/" + jsonManager.index.Version + "/libil2cpp/vm/GlobalMetadata.cpp", cpp.retsrc);
File.WriteAllLines("Generation/" + jsonManager.index.Version + "/libil2cpp/vm/GlobalMetadataFileInternals.h", File.ReadAllLines("src-res/" + jsonManager.index.Version + "/GlobalMetadataFileInternals.h"));
}
else
{
Console.WriteLine("版本错误!请确保你配置了正确且受支持的Metadata版本!(24.4 / 28)");
return;
}
File.WriteAllLines("Generation/" + jsonManager.index.Version + "/libil2cpp/vm/xxtea.cpp", File.ReadAllLines("src-res/xxtea.cpp"));
File.WriteAllLines("Generation/" + jsonManager.index.Version + "/libil2cpp/vm/xxtea.h", File.ReadAllLines("src-res/xxtea.h"));
return;
}
bool CheckMetadataFile()
{
if (BitConverter.ToUInt32(metadata_origin, 0) != 4205910959)
Expand All @@ -106,7 +170,10 @@ void _Test()
jsonManager = new JsonManager("Config.json");
Console.WriteLine("Your Password is: " + jsonManager.index.key);
Console.WriteLine("Your MetadataVersion is: " + jsonManager.index.Version);
Console.WriteLine((byte)Tools.CheckNull(114514));
string tmp = File.ReadAllText("src-res/24.4/MetadataCache.cpp");
CPP cpp = new CPP(tmp,IL2CPP_Version.V24_4,jsonManager.index.key, (byte)Tools.CheckNull(jsonManager.index.key));

Console.WriteLine(cpp.retsrc);
}
void CheckVersion()
{
Expand All @@ -115,35 +182,12 @@ void CheckVersion()
MetadataCheck metadataCheck = new MetadataCheck(new MemoryStream(metadata_origin));
Console.WriteLine("Your Metadata Version:" + metadataCheck.Version);
}
byte[] CryptB(byte[] b,byte skip,int key)
{
byte[] result = new byte[b.Length];
for (int i = 0; i < b.Length; i++)
{
if (b[i] != 0 && b[i] != skip)
result[i] = (byte)(b[i] ^ key);
else
result[i] = b[i];
}
return result;
}
/*
byte[] CryptB(byte[] b)
{
byte[] result = new byte[b.Length];
for (int i = 0; i < b.Length; i++)
{
if (b[i] != 0 && b[i] != 0x52)
result[i] = (byte)(b[i] ^ 114514);
else
result[i] = b[i];
}
return result;
}
*/
void Help()
{
Console.WriteLine("O&Z_IL2CPP_Security使用方法:"+"\n");
Console.WriteLine("O&Z_IL2CPP_Security.exe [文件路径] [参数] *[输出路径]");
Console.WriteLine("参数: Crypt:加密 CheckVersion:检查版本");
Console.WriteLine("使用方法:"+"\n");
Console.WriteLine("加密:\n O&Z_IL2CPP_Security.exe [文件路径] Crypt [输出路径]\n");
Console.WriteLine("查看Metadata版本:\n O&Z_IL2CPP_Security.exe [文件路径] CheckVersion\n");
Console.WriteLine("生成密钥组件:\n O&Z_IL2CPP_Security.exe Generate\n");
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
4 changes: 4 additions & 0 deletions O&Z_IL2CPP_Security/Properties/launchSettings.json
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,10 @@
"Test": {
"commandName": "Project",
"commandLineArgs": "\"global-metadata.dat\" Test"
},
"Generate": {
"commandName": "Project",
"commandLineArgs": "Generate"
}
}
}
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