void decryptStrings(uint[] key) { var data = stringDataField.InitialValue; var encryptedData = new uint[data.Length / 4]; Buffer.BlockCopy(data, 0, encryptedData, 0, data.Length); DeobUtils.xxteaDecrypt(encryptedData, key); var decryptedData = new byte[data.Length]; Buffer.BlockCopy(encryptedData, 0, decryptedData, 0, data.Length); var inflated = DeobUtils.inflate(decryptedData, 0, decryptedData.Length, true); var reader = MemoryImageStream.Create(inflated); int deflatedLength = (int)reader.ReadCompressedUInt32(); int numStrings = (int)reader.ReadCompressedUInt32(); decryptedStrings = new string[numStrings]; var offsets = new int[numStrings]; for (int i = 0; i < numStrings; i++) { offsets[i] = (int)reader.ReadCompressedUInt32(); } int startOffset = (int)reader.Position; for (int i = 0; i < numStrings; i++) { reader.Position = startOffset + offsets[i]; decryptedStrings[i] = reader.ReadString(); } }
void decryptStrings(uint[] key) { var data = stringDataField.InitialValue; var encryptedData = new uint[data.Length / 4]; Buffer.BlockCopy(data, 0, encryptedData, 0, data.Length); DeobUtils.xxteaDecrypt(encryptedData, key); var decryptedData = new byte[data.Length]; Buffer.BlockCopy(encryptedData, 0, decryptedData, 0, data.Length); var inflated = DeobUtils.inflate(decryptedData, 0, decryptedData.Length, true); var reader = new BinaryReader(new MemoryStream(inflated)); int deflatedLength = DeobUtils.readVariableLengthInt32(reader); int numStrings = DeobUtils.readVariableLengthInt32(reader); decryptedStrings = new string[numStrings]; var offsets = new int[numStrings]; for (int i = 0; i < numStrings; i++) { offsets[i] = DeobUtils.readVariableLengthInt32(reader); } int startOffset = (int)reader.BaseStream.Position; for (int i = 0; i < numStrings; i++) { reader.BaseStream.Position = startOffset + offsets[i]; decryptedStrings[i] = reader.ReadString(); } }
IBinaryReader decrypt(int length) { var block = new uint[4]; var decrypted = new byte[16]; var outStream = new MemoryStream(length); while (reader.Position < reader.Length) { block[0] = reader.ReadUInt32(); block[1] = reader.ReadUInt32(); block[2] = reader.ReadUInt32(); block[3] = reader.ReadUInt32(); DeobUtils.xxteaDecrypt(block, key); Buffer.BlockCopy(block, 0, decrypted, 0, decrypted.Length); outStream.Write(decrypted, 0, decrypted.Length); } return(MemoryImageStream.Create(outStream.ToArray())); }
Stream decrypt(int length) { var block = new uint[4]; var decrypted = new byte[16]; var outStream = new MemoryStream(length); while (reader.BaseStream.Position < reader.BaseStream.Length) { block[0] = reader.ReadUInt32(); block[1] = reader.ReadUInt32(); block[2] = reader.ReadUInt32(); block[3] = reader.ReadUInt32(); DeobUtils.xxteaDecrypt(block, key); Buffer.BlockCopy(block, 0, decrypted, 0, decrypted.Length); outStream.Write(decrypted, 0, decrypted.Length); } outStream.Position = 0; return(outStream); }
public ResourceInfo[] read() { if (reader.ReadUInt32() != 0xBEEFCACE) { throw new InvalidDataException("Invalid magic"); } if (reader.ReadUInt32() <= 0) { throw new InvalidDataException("Invalid number"); } reader.ReadUInt32(); resourceReader = reader.ReadString(); if (Utils.StartsWith(resourceReader, "System.Resources.ResourceReader", StringComparison.Ordinal)) { throw new InvalidDataException("Resource isn't encrypted"); } resourceSet = reader.ReadString(); if (reader.ReadByte() != 1) { throw new ApplicationException("Invalid version"); } int flags = reader.ReadByte(); if ((flags & 0xFC) != 0) { throw new ApplicationException("Invalid flags"); } bool inflateData = (flags & 1) != 0; bool encrypted = (flags & 2) != 0; int numResources = reader.ReadInt32(); if (numResources < 0) { throw new ApplicationException("Invalid number of resources"); } var infos = new ResourceInfo[numResources]; for (int i = 0; i < numResources; i++) { var resourceName = readResourceName(reader, encrypted); int offset = reader.ReadInt32(); byte resourceFlags = reader.ReadByte(); int resourceLength = (resourceFlags & 0x80) == 0 ? -1 : reader.ReadInt32(); infos[i] = new ResourceInfo(resourceName, resourceFlags, offset, resourceLength); } var dataReader = reader; if (encrypted) { var key = new uint[4]; key[0] = dataReader.ReadUInt32(); key[1] = dataReader.ReadUInt32(); int numDwords = dataReader.ReadInt32(); if (numDwords < 0 || numDwords >= 0x40000000) { throw new ApplicationException("Invalid number of encrypted dwords"); } var encryptedData = new uint[numDwords]; for (int i = 0; i < numDwords; i++) { encryptedData[i] = dataReader.ReadUInt32(); } key[2] = dataReader.ReadUInt32(); key[3] = dataReader.ReadUInt32(); DeobUtils.xxteaDecrypt(encryptedData, key); byte[] decryptedData = new byte[encryptedData.Length * 4]; Buffer.BlockCopy(encryptedData, 0, decryptedData, 0, decryptedData.Length); dataReader = MemoryImageStream.Create(decryptedData); } if (inflateData) { var data = dataReader.ReadRemainingBytes(); data = DeobUtils.inflate(data, true); dataReader = MemoryImageStream.Create(data); } foreach (var info in infos) { info.dataReader = dataReader; } return(infos); }