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Crypt.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography;
using System.IO;
namespace Ether_IL2CPP
{
public struct FrontHeader //68
{
public byte[] sign; //24
public long offset; //8
public int length; //4
public byte[] key; //32
public int OriginLegnth; //原始Header大小
}
public class CryptHeader
{
public FrontHeader frontHeader;
object cryptHeader; //加密Header类
byte[] o_Header; //混淆后Header
public byte[] Crypted_Header; //加密后Header
public CryptHeader(object Header, IL2CPP_Version ver, long offset)
{
switch(ver)
{
case IL2CPP_Version.V24_4: cryptHeader = new CryptedHeader_v24_4((MetadataHeader_v24_4)Header);break;
case IL2CPP_Version.V24_1: cryptHeader = new CryptedHeader_v24_1((MetadataHeader_v24_1)Header); break;
case IL2CPP_Version.V28: cryptHeader = new CryptedHeader_v28((MetadataHeader_v28)Header); break;
default: throw new Exception("IL2CPP版本不支持");
}
o_Header = cryptHeader.GetType().GetMethod("cryptedHeader").Invoke(cryptHeader, null) as byte[];
frontHeader.key = GetKey(o_Header);
Crypted_Header = XXTEA.Encrypt(o_Header, frontHeader.key);
frontHeader.sign = new byte[] { 0x4F, 0x26, 0x5A, 0x5F, 0x49, 0x4C, 0x32, 0x43, 0x50, 0x50, 0x5F, 0x53, 0x65, 0x63, 0x75, 0x72, 0x69, 0x74, 0x79, 0x00, 0x00, 0x00, 0x00, 0x00 };
frontHeader.length = Crypted_Header.Length;
frontHeader.offset = offset;
frontHeader.OriginLegnth = (int)cryptHeader.GetType().GetField("Length").GetValue(cryptHeader);
}
byte[] GetKey(byte[] bytes)
{
SHA256 sha256 = SHA256.Create();
return sha256.ComputeHash(bytes);
}
}
public class CryptedHeader_v24_4
{
public readonly int Length = 264;
public struct o_Header
{
public int sanity;
public int stringLiteralCount;
public int stringLiteralDataCount;
public int stringCount;
public int eventsCount;
public int propertiesCount;
public int methodsCount;
public int parameterDefaultValuesCount;
public int fieldDefaultValuesCount;
public int fieldAndParameterDefaultValueDataCount;
public int fieldMarshaledSizesCount;
public int parametersCount;
public int fieldsCount;
public int genericParametersCount;
public int genericParameterConstraintsCount;
public int genericContainersCount;
public int nestedTypesCount;
public int interfacesCount;
public int vtableMethodsCount;
public int interfaceOffsetsCount;
public int typeDefinitionsCount;
public int imagesCount;
public int assembliesCount;
public int metadataUsageListsCount;
public int metadataUsagePairsCount;
public int fieldRefsCount;
public int referencedAssembliesCount;
public int attributesInfoCount;
public int attributeTypesCount;
public int unresolvedVirtualCallParameterTypesCount;
public int unresolvedVirtualCallParameterRangesCount;
public int windowsRuntimeTypeNamesSize;
public int exportedTypeDefinitionsCount;
public int version;
public int stringLiteralOffset; // string data for managed code
public int stringLiteralDataOffset;
public int stringOffset; // string data for metadata
public int eventsOffset; // Il2CppEventDefinition
public int propertiesOffset; // Il2CppPropertyDefinition
public int methodsOffset; // Il2CppMethodDefinition
public int parameterDefaultValuesOffset; // Il2CppParameterDefaultValue
public int fieldDefaultValuesOffset; // Il2CppFieldDefaultValue
public int fieldAndParameterDefaultValueDataOffset; // int8_t
public int fieldMarshaledSizesOffset; // Il2CppFieldMarshaledSize
public int parametersOffset; // Il2CppParameterDefinition
public int fieldsOffset; // Il2CppFieldDefinition
public int genericParametersOffset; // Il2CppGenericParameter
public int genericParameterConstraintsOffset; // TypeIndex
public int genericContainersOffset; // Il2CppGenericContainer
public int nestedTypesOffset; // TypeDefinitionIndex
public int interfacesOffset; // TypeIndex
public int vtableMethodsOffset; // EncodedMethodIndex
public int interfaceOffsetsOffset; // Il2CppInterfaceOffsetPair
public int typeDefinitionsOffset; // Il2CppTypeDefinition
public int imagesOffset; // Il2CppImageDefinition
public int assembliesOffset; // Il2CppAssemblyDefinition
public int metadataUsageListsOffset; // Il2CppMetadataUsageList
public int metadataUsagePairsOffset; // Il2CppMetadataUsagePair
public int fieldRefsOffset; // Il2CppFieldRef
public int referencedAssembliesOffset; // public int32
public int attributesInfoOffset; // Il2CppCustomAttributeTypeRange
public int attributeTypesOffset; // TypeIndex
public int unresolvedVirtualCallParameterTypesOffset; // TypeIndex
public int unresolvedVirtualCallParameterRangesOffset; // Il2CppRange
public int windowsRuntimeTypeNamesOffset; // Il2CppWindowsRuntimeTypeNamePair
public int exportedTypeDefinitionsOffset; // TypeDefinitionIndex
}
public o_Header o_header;
public CryptedHeader_v24_4(MetadataHeader_v24_4 metadataHeader)
{
o_header.sanity = 0x5A264F;
o_header.version = 0x00;
o_header.stringLiteralOffset = metadataHeader.stringLiteralOffset;
o_header.stringLiteralCount = metadataHeader.stringLiteralCount;
o_header.stringLiteralDataOffset = metadataHeader.stringLiteralDataOffset;
o_header.stringLiteralDataCount = metadataHeader.stringLiteralDataCount;
o_header.stringOffset = metadataHeader.stringOffset;
o_header.stringCount = metadataHeader.stringCount;
o_header.eventsOffset = metadataHeader.eventsOffset;
o_header.eventsCount = metadataHeader.eventsCount;
o_header.propertiesOffset = metadataHeader.propertiesOffset;
o_header.propertiesCount = metadataHeader.propertiesCount;
o_header.methodsOffset = metadataHeader.methodsOffset;
o_header.methodsCount = metadataHeader.methodsCount;
o_header.parameterDefaultValuesOffset = metadataHeader.parameterDefaultValuesOffset;
o_header.parameterDefaultValuesCount = metadataHeader.parameterDefaultValuesCount;
o_header.fieldDefaultValuesOffset = metadataHeader.fieldDefaultValuesOffset;
o_header.fieldDefaultValuesCount = metadataHeader.fieldDefaultValuesCount;
o_header.fieldAndParameterDefaultValueDataOffset = metadataHeader.fieldAndParameterDefaultValueDataOffset;
o_header.fieldAndParameterDefaultValueDataCount = metadataHeader.fieldAndParameterDefaultValueDataCount;
o_header.fieldMarshaledSizesOffset = metadataHeader.fieldMarshaledSizesOffset;
o_header.fieldMarshaledSizesCount = metadataHeader.fieldMarshaledSizesCount;
o_header.parametersOffset = metadataHeader.parametersOffset;
o_header.parametersCount = metadataHeader.parametersCount;
o_header.fieldsOffset = metadataHeader.fieldsOffset;
o_header.fieldsCount = metadataHeader.fieldsCount;
o_header.genericParametersOffset = metadataHeader.genericParametersOffset;
o_header.genericParametersCount = metadataHeader.genericParametersCount;
o_header.genericParameterConstraintsOffset = metadataHeader.genericParameterConstraintsOffset;
o_header.genericParameterConstraintsCount = metadataHeader.genericParameterConstraintsCount;
o_header.genericContainersOffset = metadataHeader.genericContainersOffset;
o_header.genericContainersCount = metadataHeader.genericContainersCount;
o_header.nestedTypesOffset = metadataHeader.nestedTypesOffset;
o_header.nestedTypesCount = metadataHeader.nestedTypesCount;
o_header.interfacesOffset = metadataHeader.interfacesOffset;
o_header.interfacesCount = metadataHeader.interfacesCount;
o_header.vtableMethodsOffset = metadataHeader.vtableMethodsOffset;
o_header.vtableMethodsCount = metadataHeader.vtableMethodsCount;
o_header.interfaceOffsetsOffset = metadataHeader.interfaceOffsetsOffset;
o_header.interfaceOffsetsCount = metadataHeader.interfaceOffsetsCount;
o_header.typeDefinitionsOffset = metadataHeader.typeDefinitionsOffset;
o_header.typeDefinitionsCount = metadataHeader.typeDefinitionsCount;
o_header.imagesOffset = metadataHeader.imagesOffset;
o_header.imagesCount = metadataHeader.imagesCount;
o_header.assembliesOffset = metadataHeader.assembliesOffset;
o_header.assembliesCount = metadataHeader.assembliesCount;
o_header.metadataUsageListsOffset = metadataHeader.metadataUsageListsOffset;
o_header.metadataUsageListsCount = metadataHeader.metadataUsageListsCount;
o_header.metadataUsagePairsOffset = metadataHeader.metadataUsagePairsOffset;
o_header.metadataUsagePairsCount = metadataHeader.metadataUsagePairsCount;
o_header.fieldRefsOffset = metadataHeader.fieldRefsOffset;
o_header.fieldRefsCount = metadataHeader.fieldRefsCount;
o_header.referencedAssembliesOffset = metadataHeader.referencedAssembliesOffset;
o_header.referencedAssembliesCount = metadataHeader.referencedAssembliesCount;
o_header.attributesInfoOffset = metadataHeader.attributesInfoOffset;
o_header.attributesInfoCount = metadataHeader.attributesInfoCount;
o_header.attributeTypesOffset = metadataHeader.attributeTypesOffset;
o_header.attributeTypesCount = metadataHeader.attributeTypesCount;
o_header.unresolvedVirtualCallParameterTypesOffset = metadataHeader.unresolvedVirtualCallParameterTypesOffset;
o_header.unresolvedVirtualCallParameterTypesCount = metadataHeader.unresolvedVirtualCallParameterTypesCount;
o_header.unresolvedVirtualCallParameterRangesOffset = metadataHeader.unresolvedVirtualCallParameterRangesOffset;
o_header.unresolvedVirtualCallParameterRangesCount = metadataHeader.unresolvedVirtualCallParameterRangesCount;
o_header.windowsRuntimeTypeNamesOffset = metadataHeader.windowsRuntimeTypeNamesOffset;
o_header.windowsRuntimeTypeNamesSize = metadataHeader.windowsRuntimeTypeNamesSize;
o_header.exportedTypeDefinitionsOffset = metadataHeader.exportedTypeDefinitionsOffset;
o_header.exportedTypeDefinitionsCount = metadataHeader.exportedTypeDefinitionsCount;
}
public byte[] cryptedHeader()
{
Stream stream = new MemoryStream();
stream.Position = 0;
BinaryWriter writer = new BinaryWriter(stream);
writer.BaseStream.Position = 0;
writer.Write(o_header.sanity);
writer.Write(o_header.stringLiteralCount);
writer.Write(o_header.stringLiteralDataCount);
writer.Write(o_header.stringCount);
writer.Write(o_header.eventsCount);
writer.Write(o_header.propertiesCount);
writer.Write(o_header.methodsCount);
writer.Write(o_header.parameterDefaultValuesCount);
writer.Write(o_header.fieldDefaultValuesCount);
writer.Write(o_header.fieldAndParameterDefaultValueDataCount);
writer.Write(o_header.fieldMarshaledSizesCount);
writer.Write(o_header.parametersCount);
writer.Write(o_header.fieldsCount);
writer.Write(o_header.genericParametersCount);
writer.Write(o_header.genericParameterConstraintsCount);
writer.Write(o_header.genericContainersCount);
writer.Write(o_header.nestedTypesCount);
writer.Write(o_header.interfacesCount);
writer.Write(o_header.vtableMethodsCount);
writer.Write(o_header.interfaceOffsetsCount);
writer.Write(o_header.typeDefinitionsCount);
writer.Write(o_header.imagesCount);
writer.Write(o_header.assembliesCount);
writer.Write(o_header.metadataUsageListsCount);
writer.Write(o_header.metadataUsagePairsCount);
writer.Write(o_header.fieldRefsCount);
writer.Write(o_header.referencedAssembliesCount);
writer.Write(o_header.attributesInfoCount);
writer.Write(o_header.attributeTypesCount);
writer.Write(o_header.unresolvedVirtualCallParameterTypesCount);
writer.Write(o_header.unresolvedVirtualCallParameterRangesCount);
writer.Write(o_header.windowsRuntimeTypeNamesSize);
writer.Write(o_header.exportedTypeDefinitionsCount);
writer.Write(o_header.version);
writer.Write(o_header.stringLiteralOffset); // string data for managed code
writer.Write(o_header.stringLiteralDataOffset);
writer.Write(o_header.stringOffset); // string data for metadata
writer.Write(o_header.eventsOffset); // Il2CppEventDefinition
writer.Write(o_header.propertiesOffset); // Il2CppPropertyDefinition
writer.Write(o_header.methodsOffset); // Il2CppMethodDefinition
writer.Write(o_header.parameterDefaultValuesOffset); // Il2CppParameterDefaultValue
writer.Write(o_header.fieldDefaultValuesOffset); // Il2CppFieldDefaultValue
writer.Write(o_header.fieldAndParameterDefaultValueDataOffset); // uint8_t
writer.Write(o_header.fieldMarshaledSizesOffset); // Il2CppFieldMarshaledSize
writer.Write(o_header.parametersOffset); // Il2CppParameterDefinition
writer.Write(o_header.fieldsOffset); // Il2CppFieldDefinition
writer.Write(o_header.genericParametersOffset); // Il2CppGenericParameter
writer.Write(o_header.genericParameterConstraintsOffset); // TypeIndex
writer.Write(o_header.genericContainersOffset); // Il2CppGenericContainer
writer.Write(o_header.nestedTypesOffset); // TypeDefinitionIndex
writer.Write(o_header.interfacesOffset); // TypeIndex
writer.Write(o_header.vtableMethodsOffset); // EncodedMethodIndex
writer.Write(o_header.interfaceOffsetsOffset); // Il2CppInterfaceOffsetPair
writer.Write(o_header.typeDefinitionsOffset); // Il2CppTypeDefinition
writer.Write(o_header.imagesOffset); // Il2CppImageDefinition
writer.Write(o_header.assembliesOffset); // Il2CppAssemblyDefinition
writer.Write(o_header.metadataUsageListsOffset); // Il2CppMetadataUsageList
writer.Write(o_header.metadataUsagePairsOffset); // Il2CppMetadataUsagePair
writer.Write(o_header.fieldRefsOffset); // Il2CppFieldRef
writer.Write(o_header.referencedAssembliesOffset); // public UInt32
writer.Write(o_header.attributesInfoOffset); // Il2CppCustomAttributeTypeRange
writer.Write(o_header.attributeTypesOffset); // TypeIndex
writer.Write(o_header.unresolvedVirtualCallParameterTypesOffset); // TypeIndex
writer.Write(o_header.unresolvedVirtualCallParameterRangesOffset); // Il2CppRange
writer.Write(o_header.windowsRuntimeTypeNamesOffset); // Il2CppWindowsRuntimeTypeNamePair
writer.Write(o_header.exportedTypeDefinitionsOffset); // TypeDefinitionIndex
stream.Position = 0;
return Utils.StreamToBytes(stream);
}
}
public class CryptedHeader_v28
{
public readonly int Length = 256;
public struct o_Header
{
public int sanity;
public int stringLiteralOffset; // string data for managed code
public int interfacesOffset; // TypeIndex
public int stringLiteralDataOffset;
public int stringOffset; // string data for metadata
public int vtableMethodsOffset; // EncodedMethodIndex
public int eventsOffset; // Il2CppEventDefinition
public int interfaceOffsetsOffset; // Il2CppInterfaceOffsetPair
public int propertiesOffset; // Il2CppPropertyDefinition
public int assembliesOffset; // Il2CppAssemblyDefinition
public int methodsOffset; // Il2CppMethodDefinition
public int fieldRefsOffset; // Il2CppFieldRef
public int parameterDefaultValuesOffset; // Il2CppParameterDefaultValue
public int typeDefinitionsOffset; // Il2CppTypeDefinition
public int fieldDefaultValuesOffset; // Il2CppFieldDefaultValue
public int imagesOffset; // Il2CppImageDefinition
public int fieldAndParameterDefaultValueDataOffset; // int8_t
public int referencedAssembliesOffset; // int32_t
public int fieldMarshaledSizesOffset; // Il2CppFieldMarshaledSize
public int unresolvedVirtualCallParameterTypesOffset; // TypeIndex
public int parametersOffset; // Il2CppParameterDefinition
public int unresolvedVirtualCallParameterRangesOffset; // Il2CppMetadataRange
public int fieldsOffset; // Il2CppFieldDefinition
public int windowsRuntimeTypeNamesOffset; // Il2CppWindowsRuntimeTypeNamePair
public int genericParametersOffset; // Il2CppGenericParameter
public int windowsRuntimeStringsOffset; // const char*
public int genericParameterConstraintsOffset; // TypeIndex
public int exportedTypeDefinitionsOffset; // TypeDefinitionIndex
public int genericContainersOffset; // Il2CppGenericContainer
public int nestedTypesOffset; // TypeDefinitionIndex
public int version;
public int genericContainersSize;
public int stringLiteralSize;
public int nestedTypesSize;
public int interfacesSize;
public int stringLiteralDataSize;
public int vtableMethodsSize;
public int stringSize;
public int interfaceOffsetsSize;
public int eventsSize;
public int typeDefinitionsSize;
public int parameterDefaultValuesSize;
public int imagesSize;
public int fieldDefaultValuesSize;
public int assembliesSize;
public int propertiesSize;
public int fieldRefsSize;
public int methodsSize;
public int referencedAssembliesSize;
public int attributeDataOffset;
public int attributeDataSize;
public int attributeDataRangeOffset;
public int attributeDataRangeSize;
public int fieldAndParameterDefaultValueDataSize;
public int unresolvedVirtualCallParameterTypesSize;
public int fieldMarshaledSizesSize;
public int unresolvedVirtualCallParameterRangesSize;
public int parametersSize;
public int windowsRuntimeTypeNamesSize;
public int fieldsSize;
public int windowsRuntimeStringsSize;
public int genericParametersSize;
public int exportedTypeDefinitionsSize;
public int genericParameterConstraintsSize;
}
public o_Header o_header;
public CryptedHeader_v28(MetadataHeader_v28 metadataHeader)
{
o_header.sanity = 0x5A264F;
o_header.version = 0x00;
o_header.stringLiteralOffset = metadataHeader.stringLiteralOffset; // string data for managed code
o_header.stringLiteralSize = metadataHeader.stringLiteralSize;
o_header.stringLiteralDataOffset = metadataHeader.stringLiteralDataOffset;
o_header.stringLiteralDataSize = metadataHeader.stringLiteralDataSize;
o_header.stringOffset = metadataHeader.stringOffset; // string data for metadata
o_header.stringSize = metadataHeader.stringSize;
o_header.eventsOffset = metadataHeader.eventsOffset; // Il2CppEventDefinition
o_header.eventsSize = metadataHeader.eventsSize;
o_header.propertiesOffset = metadataHeader.propertiesOffset; // Il2CppPropertyDefinition
o_header.propertiesSize = metadataHeader.propertiesSize;
o_header.methodsOffset = metadataHeader.methodsOffset; // Il2CppMethodDefinition
o_header.methodsSize = metadataHeader.methodsSize;
o_header.parameterDefaultValuesOffset = metadataHeader.parameterDefaultValuesOffset; // Il2CppParameterDefaultValue
o_header.parameterDefaultValuesSize = metadataHeader.parameterDefaultValuesSize;
o_header.fieldDefaultValuesOffset = metadataHeader.fieldDefaultValuesOffset;// Il2CppFieldDefaultValue
o_header.fieldDefaultValuesSize = metadataHeader.fieldDefaultValuesSize;
o_header.fieldAndParameterDefaultValueDataOffset = metadataHeader.fieldAndParameterDefaultValueDataOffset; // uint8_t
o_header.fieldAndParameterDefaultValueDataSize = metadataHeader.fieldAndParameterDefaultValueDataSize;
o_header.fieldMarshaledSizesOffset = metadataHeader.fieldMarshaledSizesOffset;// Il2CppFieldMarshaledSize
o_header.fieldMarshaledSizesSize = metadataHeader.fieldMarshaledSizesSize;
o_header.parametersOffset = metadataHeader.parametersOffset; // Il2CppParameterDefinition
o_header.parametersSize = metadataHeader.parametersSize;
o_header.parametersSize = metadataHeader.parametersSize;
o_header.fieldsOffset = metadataHeader.fieldsOffset; // Il2CppFieldDefinition
o_header.fieldsSize = metadataHeader.fieldsSize;
o_header.genericParametersOffset = metadataHeader.genericParametersOffset; // Il2CppGenericParameter
o_header.genericParametersSize = metadataHeader.genericParametersSize;
o_header.genericParameterConstraintsOffset = metadataHeader.genericParameterConstraintsOffset; // TypeIndex
o_header.genericParameterConstraintsSize = metadataHeader.genericParameterConstraintsSize;
o_header.genericContainersOffset = metadataHeader.genericContainersOffset; // Il2CppGenericContainer
o_header.genericContainersSize = metadataHeader.genericContainersSize;
o_header.nestedTypesOffset = metadataHeader.nestedTypesOffset; // TypeDefinitionIndex
o_header.nestedTypesSize = metadataHeader.nestedTypesSize;
o_header.interfacesOffset = metadataHeader.interfacesOffset;// TypeIndex
o_header.interfacesSize = metadataHeader.interfacesSize;
o_header.vtableMethodsOffset = metadataHeader.vtableMethodsOffset; // EncodedMethodIndex
o_header.vtableMethodsSize = metadataHeader.vtableMethodsSize;
o_header.interfaceOffsetsOffset = metadataHeader.interfaceOffsetsOffset; // Il2CppInterfaceOffsetPair
o_header.interfaceOffsetsSize = metadataHeader.interfaceOffsetsSize;
o_header.typeDefinitionsOffset = metadataHeader.typeDefinitionsOffset; // Il2CppTypeDefinition
o_header.typeDefinitionsSize = metadataHeader.typeDefinitionsSize;
o_header.imagesOffset = metadataHeader.imagesOffset; // Il2CppImageDefinition
o_header.imagesSize = metadataHeader.imagesSize;
o_header.assembliesOffset = metadataHeader.assembliesOffset; // Il2CppAssemblyDefinition
o_header.assembliesSize = metadataHeader.assembliesSize;
o_header.fieldRefsOffset = metadataHeader.fieldRefsOffset; // Il2CppFieldRef
o_header.fieldRefsSize = metadataHeader.fieldRefsSize;
o_header.referencedAssembliesOffset = metadataHeader.referencedAssembliesOffset; // int32_t
o_header.referencedAssembliesSize = metadataHeader.referencedAssembliesSize;
o_header.attributeDataOffset = metadataHeader.attributeDataOffset;
o_header.attributeDataSize = metadataHeader.attributeDataSize;
o_header.attributeDataRangeOffset = metadataHeader.attributeDataRangeOffset;
o_header.attributeDataRangeSize = metadataHeader.attributeDataRangeSize;
o_header.unresolvedVirtualCallParameterTypesOffset = metadataHeader.unresolvedVirtualCallParameterTypesOffset; // TypeIndex
o_header.unresolvedVirtualCallParameterTypesSize = metadataHeader.unresolvedVirtualCallParameterTypesSize;
o_header.unresolvedVirtualCallParameterRangesOffset = metadataHeader.unresolvedVirtualCallParameterRangesOffset; // Il2CppMetadataRange
o_header.unresolvedVirtualCallParameterRangesSize = metadataHeader.unresolvedVirtualCallParameterRangesSize;
o_header.windowsRuntimeTypeNamesOffset = metadataHeader.windowsRuntimeTypeNamesOffset; // Il2CppWindowsRuntimeTypeNamePair
o_header.windowsRuntimeTypeNamesSize = metadataHeader.windowsRuntimeTypeNamesSize;
o_header.windowsRuntimeStringsOffset = metadataHeader.windowsRuntimeStringsOffset; // const char*
o_header.windowsRuntimeStringsSize = metadataHeader.windowsRuntimeStringsSize;
o_header.exportedTypeDefinitionsOffset = metadataHeader.exportedTypeDefinitionsOffset; // TypeDefinitionIndex
o_header.exportedTypeDefinitionsSize = metadataHeader.exportedTypeDefinitionsSize;
}
public byte[] cryptedHeader()
{
Stream stream = new MemoryStream();
stream.Position = 0;
BinaryWriter writer = new BinaryWriter(stream);
writer.BaseStream.Position = 0;
writer.Write(o_header.sanity);
writer.Write(o_header.stringLiteralOffset); // string data for managed code
writer.Write(o_header.interfacesOffset); // TypeIndex
writer.Write(o_header.stringLiteralDataOffset);
writer.Write(o_header.stringOffset); // string data for metadata
writer.Write(o_header.vtableMethodsOffset); // EncodedMethodIndex
writer.Write(o_header.eventsOffset); // Il2CppEventDefinition
writer.Write(o_header.interfaceOffsetsOffset); // Il2CppInterfaceOffsetPair
writer.Write(o_header.propertiesOffset); // Il2CppPropertyDefinition
writer.Write(o_header.assembliesOffset); // Il2CppAssemblyDefinition
writer.Write(o_header.methodsOffset); // Il2CppMethodDefinition
writer.Write(o_header.fieldRefsOffset); // Il2CppFieldRef
writer.Write(o_header.parameterDefaultValuesOffset); // Il2CppParameterDefaultValue
writer.Write(o_header.typeDefinitionsOffset); // Il2CppTypeDefinition
writer.Write(o_header.fieldDefaultValuesOffset); // Il2CppFieldDefaultValue
writer.Write(o_header.imagesOffset); // Il2CppImageDefinition
writer.Write(o_header.fieldAndParameterDefaultValueDataOffset); // uint8_t
writer.Write(o_header.referencedAssembliesOffset); // int32_t
writer.Write(o_header.fieldMarshaledSizesOffset); // Il2CppFieldMarshaledSize
writer.Write(o_header.unresolvedVirtualCallParameterTypesOffset); // TypeIndex
writer.Write(o_header.parametersOffset); // Il2CppParameterDefinition
writer.Write(o_header.unresolvedVirtualCallParameterRangesOffset); // Il2CppMetadataRange
writer.Write(o_header.fieldsOffset); // Il2CppFieldDefinition
writer.Write(o_header.windowsRuntimeTypeNamesOffset); // Il2CppWindowsRuntimeTypeNamePair
writer.Write(o_header.genericParametersOffset); // Il2CppGenericParameter
writer.Write(o_header.windowsRuntimeStringsOffset); // const char*
writer.Write(o_header.genericParameterConstraintsOffset); // TypeIndex
writer.Write(o_header.exportedTypeDefinitionsOffset); // TypeDefinitionIndex
writer.Write(o_header.genericContainersOffset); // Il2CppGenericContainer
writer.Write(o_header.nestedTypesOffset); // TypeDefinitionIndex
writer.Write(o_header.version);
writer.Write(o_header.genericContainersSize);
writer.Write(o_header.stringLiteralSize);
writer.Write(o_header.nestedTypesSize);
writer.Write(o_header.interfacesSize);
writer.Write(o_header.stringLiteralDataSize);
writer.Write(o_header.vtableMethodsSize);
writer.Write(o_header.stringSize);
writer.Write(o_header.interfaceOffsetsSize);
writer.Write(o_header.eventsSize);
writer.Write(o_header.typeDefinitionsSize);
writer.Write(o_header.parameterDefaultValuesSize);
writer.Write(o_header.imagesSize);
writer.Write(o_header.fieldDefaultValuesSize);
writer.Write(o_header.assembliesSize);
writer.Write(o_header.propertiesSize);
writer.Write(o_header.fieldRefsSize);
writer.Write(o_header.methodsSize);
writer.Write(o_header.referencedAssembliesSize);
writer.Write(o_header.attributeDataOffset);
writer.Write(o_header.attributeDataSize);
writer.Write(o_header.attributeDataRangeOffset);
writer.Write(o_header.attributeDataRangeSize);
writer.Write(o_header.fieldAndParameterDefaultValueDataSize);
writer.Write(o_header.unresolvedVirtualCallParameterTypesSize);
writer.Write(o_header.fieldMarshaledSizesSize);
writer.Write(o_header.unresolvedVirtualCallParameterRangesSize);
writer.Write(o_header.parametersSize);
writer.Write(o_header.windowsRuntimeTypeNamesSize);
writer.Write(o_header.fieldsSize);
writer.Write(o_header.windowsRuntimeStringsSize);
writer.Write(o_header.genericParametersSize);
writer.Write(o_header.exportedTypeDefinitionsSize);
writer.Write(o_header.genericParameterConstraintsSize);
stream.Position = 0;
return Utils.StreamToBytes(stream);
}
}
public class CryptedHeader_v24_1
{
public readonly int Length = 272;
public o_Header o_header;
public struct o_Header
{
public int stringLiteralOffset; // string data for managed code
public int stringLiteralDataOffset;
public int stringOffset; // string data for metadata
public int eventsOffset; // Il2CppEventDefinition
public int propertiesOffset; // Il2CppPropertyDefinition
public int methodsOffset; // Il2CppMethodDefinition
public int parameterDefaultValuesOffset; // Il2CppParameterDefaultValue
public int fieldDefaultValuesOffset; // Il2CppFieldDefaultValue
public int fieldAndParameterDefaultValueDataOffset; // int8_t
public int fieldMarshaledSizesOffset; // Il2CppFieldMarshaledSize
public int parametersOffset; // Il2CppParameterDefinition
public int fieldsOffset; // Il2CppFieldDefinition
public int genericParametersOffset; // Il2CppGenericParameter
public int genericParameterConstraintsOffset; // TypeIndex
public int genericContainersOffset; // Il2CppGenericContainer
public int nestedTypesOffset; // TypeDefinitionIndex
public int interfacesOffset; // TypeIndex
public int vtableMethodsOffset; // EncodedMethodIndex
public int interfaceOffsetsOffset; // Il2CppInterfaceOffsetPair
public int typeDefinitionsOffset; // Il2CppTypeDefinition
public int rgctxEntriesOffset; // Il2CppRGCTXDefinition
public int imagesOffset; // Il2CppImageDefinition
public int assembliesOffset; // Il2CppAssemblyDefinition
public int metadataUsageListsOffset; // Il2CppMetadataUsageList
public int metadataUsagePairsOffset; // Il2CppMetadataUsagePair
public int fieldRefsOffset; // Il2CppFieldRef
public int referencedAssembliesOffset; // int32_t
public int attributesInfoOffset; // Il2CppCustomAttributeTypeRange
public int attributeTypesOffset; // TypeIndex
public int unresolvedVirtualCallParameterTypesOffset; // TypeIndex
public int unresolvedVirtualCallParameterRangesOffset; // Il2CppRange
public int windowsRuntimeTypeNamesOffset; // Il2CppWindowsRuntimeTypeNamePair
public int exportedTypeDefinitionsOffset; // TypeDefinitionIndex
public int version;
public int sanity;
public int stringLiteralCount;
public int stringLiteralDataCount;
public int stringCount;
public int eventsCount;
public int propertiesCount;
public int methodsCount;
public int parameterDefaultValuesCount;
public int fieldDefaultValuesCount;
public int fieldAndParameterDefaultValueDataCount;
public int fieldMarshaledSizesCount;
public int parametersCount;
public int fieldsCount;
public int genericParametersCount;
public int genericParameterConstraintsCount;
public int genericContainersCount;
public int nestedTypesCount;
public int interfacesCount;
public int vtableMethodsCount;
public int interfaceOffsetsCount;
public int typeDefinitionsCount;
public int rgctxEntriesCount;
public int imagesCount;
public int assembliesCount;
public int metadataUsageListsCount;
public int metadataUsagePairsCount;
public int fieldRefsCount;
public int referencedAssembliesCount;
public int attributesInfoCount;
public int attributeTypesCount;
public int unresolvedVirtualCallParameterTypesCount;
public int unresolvedVirtualCallParameterRangesCount;
public int windowsRuntimeTypeNamesSize;
public int exportedTypeDefinitionsCount;
}
public CryptedHeader_v24_1(MetadataHeader_v24_1 metadataHeader)
{
o_header.stringLiteralOffset = metadataHeader.stringLiteralOffset; // string data for managed code
o_header.stringLiteralDataOffset = metadataHeader.stringLiteralDataOffset;
o_header.stringOffset = metadataHeader.stringOffset; // string data for metadata
o_header.eventsOffset = metadataHeader.eventsOffset; // Il2CppEventDefinition
o_header.propertiesOffset = metadataHeader.propertiesOffset; // Il2CppPropertyDefinition
o_header.methodsOffset = metadataHeader.methodsOffset; // Il2CppMethodDefinition
o_header.parameterDefaultValuesOffset = metadataHeader.parameterDefaultValuesOffset; // Il2CppParameterDefaultValue
o_header.fieldDefaultValuesOffset = metadataHeader.fieldDefaultValuesOffset; // Il2CppFieldDefaultValue
o_header.fieldAndParameterDefaultValueDataOffset = metadataHeader.fieldAndParameterDefaultValueDataOffset; // uint8_t
o_header.fieldMarshaledSizesOffset = metadataHeader.fieldMarshaledSizesOffset; // Il2CppFieldMarshaledSize
o_header.parametersOffset = metadataHeader.parametersOffset; // Il2CppParameterDefinition
o_header.fieldsOffset = metadataHeader.fieldsOffset; // Il2CppFieldDefinition
o_header.genericParametersOffset = metadataHeader.genericParametersOffset; // Il2CppGenericParameter
o_header.genericParameterConstraintsOffset = metadataHeader.genericParameterConstraintsOffset; // TypeIndex
o_header.genericContainersOffset = metadataHeader.genericContainersOffset; // Il2CppGenericContainer
o_header.nestedTypesOffset = metadataHeader.nestedTypesOffset; // TypeDefinitionIndex
o_header.interfacesOffset = metadataHeader.interfacesOffset; // TypeIndex
o_header.vtableMethodsOffset = metadataHeader.vtableMethodsOffset; // EncodedMethodIndex
o_header.interfaceOffsetsOffset = metadataHeader.interfaceOffsetsOffset; // Il2CppInterfaceOffsetPair
o_header.typeDefinitionsOffset = metadataHeader.typeDefinitionsOffset; // Il2CppTypeDefinition
o_header.rgctxEntriesOffset = metadataHeader.rgctxEntriesOffset; // Il2CppRGCTXDefinition
o_header.imagesOffset = metadataHeader.imagesOffset; // Il2CppImageDefinition
o_header.assembliesOffset = metadataHeader.assembliesOffset; // Il2CppAssemblyDefinition
o_header.metadataUsageListsOffset = metadataHeader.metadataUsageListsOffset; // Il2CppMetadataUsageList
o_header.metadataUsagePairsOffset = metadataHeader.metadataUsagePairsOffset; // Il2CppMetadataUsagePair
o_header.fieldRefsOffset = metadataHeader.fieldRefsOffset; // Il2CppFieldRef
o_header.referencedAssembliesOffset = metadataHeader.referencedAssembliesOffset; // int32_t
o_header.attributesInfoOffset = metadataHeader.attributesInfoOffset; // Il2CppCustomAttributeTypeRange
o_header.attributeTypesOffset = metadataHeader.attributeTypesOffset; // TypeIndex
o_header.unresolvedVirtualCallParameterTypesOffset = metadataHeader.unresolvedVirtualCallParameterTypesOffset; // TypeIndex
o_header.unresolvedVirtualCallParameterRangesOffset = metadataHeader.unresolvedVirtualCallParameterRangesOffset; // Il2CppRange
o_header.windowsRuntimeTypeNamesOffset = metadataHeader.windowsRuntimeTypeNamesOffset; // Il2CppWindowsRuntimeTypeNamePair
o_header.exportedTypeDefinitionsOffset = metadataHeader.exportedTypeDefinitionsOffset; // TypeDefinitionIndex
o_header.sanity = 0x5A264F;
o_header.version = 0x00;
o_header.stringLiteralCount = metadataHeader.stringLiteralCount;
o_header.stringLiteralDataCount = metadataHeader.stringLiteralDataCount;
o_header.stringCount = metadataHeader.stringCount;
o_header.eventsCount = metadataHeader.eventsCount;
o_header.propertiesCount = metadataHeader.propertiesCount;
o_header.methodsCount = metadataHeader.methodsCount;
o_header.parameterDefaultValuesCount = metadataHeader.parameterDefaultValuesCount;
o_header.fieldDefaultValuesCount = metadataHeader.fieldDefaultValuesCount;
o_header.fieldAndParameterDefaultValueDataCount = metadataHeader.fieldAndParameterDefaultValueDataCount;
o_header.fieldMarshaledSizesCount = metadataHeader.fieldMarshaledSizesCount;
o_header.parametersCount = metadataHeader.parametersCount;
o_header.fieldsCount = metadataHeader.fieldsCount;
o_header.genericParametersCount = metadataHeader.genericParametersCount;
o_header.genericParameterConstraintsCount = metadataHeader.genericParameterConstraintsCount;
o_header.genericContainersCount = metadataHeader.genericContainersCount;
o_header.nestedTypesCount = metadataHeader.nestedTypesCount;
o_header.interfacesCount = metadataHeader.interfacesCount;
o_header.vtableMethodsCount = metadataHeader.vtableMethodsCount;
o_header.interfaceOffsetsCount = metadataHeader.interfaceOffsetsCount;
o_header.typeDefinitionsCount = metadataHeader.typeDefinitionsCount;
o_header.rgctxEntriesCount = metadataHeader.rgctxEntriesCount;
o_header.imagesCount = metadataHeader.imagesCount;
o_header.assembliesCount = metadataHeader.assembliesCount;
o_header.metadataUsageListsCount = metadataHeader.metadataUsageListsCount;
o_header.metadataUsagePairsCount = metadataHeader.metadataUsagePairsCount;
o_header.fieldRefsCount = metadataHeader.fieldRefsCount;
o_header.referencedAssembliesCount = metadataHeader.referencedAssembliesCount;
o_header.attributesInfoCount = metadataHeader.attributesInfoCount;
o_header.attributeTypesCount = metadataHeader.attributeTypesCount;
o_header.unresolvedVirtualCallParameterTypesCount = metadataHeader.unresolvedVirtualCallParameterTypesCount;
o_header.unresolvedVirtualCallParameterRangesCount = metadataHeader.unresolvedVirtualCallParameterRangesCount;
o_header.windowsRuntimeTypeNamesSize = metadataHeader.windowsRuntimeTypeNamesSize;
o_header.exportedTypeDefinitionsCount = metadataHeader.exportedTypeDefinitionsCount;
}
public byte[] cryptedHeader()
{
Stream stream = new MemoryStream();
stream.Position = 0;
BinaryWriter writer = new BinaryWriter(stream);
writer.BaseStream.Position = 0;
writer.Write(o_header.stringLiteralOffset); // string data for managed code
writer.Write(o_header.stringLiteralDataOffset);
writer.Write(o_header.stringOffset); // string data for metadata
writer.Write(o_header.eventsOffset); // Il2CppEventDefinition
writer.Write(o_header.propertiesOffset); // Il2CppPropertyDefinition
writer.Write(o_header.methodsOffset); // Il2CppMethodDefinition
writer.Write(o_header.parameterDefaultValuesOffset); // Il2CppParameterDefaultValue
writer.Write(o_header.fieldDefaultValuesOffset); // Il2CppFieldDefaultValue
writer.Write(o_header.fieldAndParameterDefaultValueDataOffset); // uint8_t
writer.Write(o_header.fieldMarshaledSizesOffset); // Il2CppFieldMarshaledSize
writer.Write(o_header.parametersOffset); // Il2CppParameterDefinition
writer.Write(o_header.fieldsOffset); // Il2CppFieldDefinition
writer.Write(o_header.genericParametersOffset); // Il2CppGenericParameter
writer.Write(o_header.genericParameterConstraintsOffset); // TypeIndex
writer.Write(o_header.genericContainersOffset); // Il2CppGenericContainer
writer.Write(o_header.nestedTypesOffset); // TypeDefinitionIndex
writer.Write(o_header.interfacesOffset); // TypeIndex
writer.Write(o_header.vtableMethodsOffset); // EncodedMethodIndex
writer.Write(o_header.interfaceOffsetsOffset); // Il2CppInterfaceOffsetPair
writer.Write(o_header.typeDefinitionsOffset); // Il2CppTypeDefinition
writer.Write(o_header.rgctxEntriesOffset); // Il2CppRGCTXDefinition
writer.Write(o_header.imagesOffset); // Il2CppImageDefinition
writer.Write(o_header.assembliesOffset); // Il2CppAssemblyDefinition
writer.Write(o_header.metadataUsageListsOffset); // Il2CppMetadataUsageList
writer.Write(o_header.metadataUsagePairsOffset); // Il2CppMetadataUsagePair
writer.Write(o_header.fieldRefsOffset); // Il2CppFieldRef
writer.Write(o_header.referencedAssembliesOffset); // int32_t
writer.Write(o_header.attributesInfoOffset); // Il2CppCustomAttributeTypeRange
writer.Write(o_header.attributeTypesOffset); // TypeIndex
writer.Write(o_header.unresolvedVirtualCallParameterTypesOffset); // TypeIndex
writer.Write(o_header.unresolvedVirtualCallParameterRangesOffset); // Il2CppRange
writer.Write(o_header.windowsRuntimeTypeNamesOffset); // Il2CppWindowsRuntimeTypeNamePair
writer.Write(o_header.exportedTypeDefinitionsOffset); // TypeDefinitionIndex
writer.Write(o_header.version);
writer.Write(o_header.sanity);
writer.Write(o_header.stringLiteralCount);
writer.Write(o_header.stringLiteralDataCount);
writer.Write(o_header.stringCount);
writer.Write(o_header.eventsCount);
writer.Write(o_header.propertiesCount);
writer.Write(o_header.methodsCount);
writer.Write(o_header.parameterDefaultValuesCount);
writer.Write(o_header.fieldDefaultValuesCount);
writer.Write(o_header.fieldAndParameterDefaultValueDataCount);
writer.Write(o_header.fieldMarshaledSizesCount);
writer.Write(o_header.parametersCount);
writer.Write(o_header.fieldsCount);
writer.Write(o_header.genericParametersCount);
writer.Write(o_header.genericParameterConstraintsCount);
writer.Write(o_header.genericContainersCount);
writer.Write(o_header.nestedTypesCount);
writer.Write(o_header.interfacesCount);
writer.Write(o_header.vtableMethodsCount);
writer.Write(o_header.interfaceOffsetsCount);
writer.Write(o_header.typeDefinitionsCount);
writer.Write(o_header.rgctxEntriesCount);
writer.Write(o_header.imagesCount);
writer.Write(o_header.assembliesCount);
writer.Write(o_header.metadataUsageListsCount);
writer.Write(o_header.metadataUsagePairsCount);
writer.Write(o_header.fieldRefsCount);
writer.Write(o_header.referencedAssembliesCount);
writer.Write(o_header.attributesInfoCount);
writer.Write(o_header.attributeTypesCount);
writer.Write(o_header.unresolvedVirtualCallParameterTypesCount);
writer.Write(o_header.unresolvedVirtualCallParameterRangesCount);
writer.Write(o_header.windowsRuntimeTypeNamesSize);
writer.Write(o_header.exportedTypeDefinitionsCount);
stream.Position = 0;
return Utils.StreamToBytes(stream);
}
}
public static class Crypt
{
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, key));
}
return result;
}
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]^ key);
}
return result;
}
public static byte[] CryptMetadataBody(byte[] data)
{
byte[] sign = Encoding.UTF8.GetBytes("O&Z_IL2CPP");
return Utils.addBytes(sign, XXTEA.Encrypt(data, "114514"));
}
public static byte[] CryptHeader(byte[] data,IL2CPP_Version ver)
{
byte[] ret = XXTEA.Encrypt(data, "114514");
Stream stream = new MemoryStream();
BinaryWriter writer = new BinaryWriter(stream);
writer.Write(ret.Length);
writer.Write(ret);
return Utils.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
{
public static byte[] CryptAssetBundle(byte[] data)
{
byte[] sign = Encoding.UTF8.GetBytes("O&Z_ASSET");
return Utils.addBytes(sign, XXTEA.Encrypt(data, "114514"));
}
}
}