Пример #1
0
        /* KDSBEST START */
        public int encryptFile(String inFile, String outFile, byte[] devKLic, byte[] keyFromRif, byte[] contentID, byte[] flags, byte[] type, byte[] version)
        {
            FileStream fin = File.Open(inFile, FileMode.Open);

            //  MemoryMappedFile fin1 = MemoryMappedFile.CreateFromFile(inFile, FileMode.Open);
            NPD[]      ptr = new NPD[1]; //Ptr to Ptr
            FileStream o   = File.Open(outFile, FileMode.Create);

            string[] fn  = o.Name.Split('\\');
            byte[]   npd = writeValidNPD(fn[fn.Length - 1], devKLic, ptr, fin, contentID, flags, version, type);
            o.Write(npd, 0, npd.Length);
            byte[] buffer = new byte[4];
            // FLAGS
            buffer[0] = 0x00;
            buffer[1] = 0x00;
            buffer[2] = 0x00;
            buffer[3] = 0x00;
            o.Write(buffer, 0, 4);

            // blocksize 0x00004000
            buffer[2] = 0x40;
            o.Write(buffer, 0, 4);
            long len = fin.Length;

            byte[] lenBuf  = BitConverter.GetBytes(len);
            byte[] rLenBuf = new byte[8];
            for (int i = 0; i < 8; i++)
            {
                rLenBuf[i] = 0x00;
            }
            for (int i = 0; i < lenBuf.Length; i++)
            {
                rLenBuf[7 - i] = lenBuf[i];
            }
            o.Write(rLenBuf, 0, 8);

            // Fill the rest 0x10 bytes with dummy we generate the metasection hash later!
            // the bytes till 0x100 are unknown
            buffer[0] = 0x00;
            while (o.Length < 0x100)
            {
                o.Write(buffer, 0, 1);
            }

            EDATData data = new EDATData();

            data.flags     = 0x00000000;
            data.blockSize = 0x00004000;
            data.fileLen   = new BigInteger(len);
            byte[] rifkey   = getKey(ptr[0], data, devKLic, keyFromRif); //Obtain the key for decryption (result of sc471 or sdatkey)
            int    hashFlag = 0x00000002;


            encryptData(fin, o, ptr[0], data, rifkey);

            o.Seek(0x90, SeekOrigin.Begin);
            AppLoader aa = new AppLoader();

            aa.doInit(hashFlag, 0x00000001, new byte[0x10], new byte[0x10], rifkey);

            int sectionSize = ((data.getFlags() & FLAG_COMPRESSED) != 0) ? 0x20 : 0x010; //BUG??? What about FLAG0x20??
            //Determine the metadatasection total len
            int numBlocks = (int)((data.getFileLen() + data.getBlockSize() - 11) / data.getBlockSize());

            int readed     = 0;
            int baseOffset = 0x100;
            //baseOffset +=  modifier; //There is an unknown offset to add to the metadatasection... value seen 0
            long remaining = sectionSize * numBlocks;

            while (remaining > 0)
            {
                int lenToRead = (HEADER_MAX_BLOCKSIZE > remaining) ? (int)remaining : HEADER_MAX_BLOCKSIZE;
                o.Seek(baseOffset + readed, SeekOrigin.Begin);
                byte[] content = new byte[lenToRead];
                byte[] ooo     = new byte[lenToRead];
                o.Read(content, 0, content.Length);
                aa.doUpdate(content, 0, ooo, 0, lenToRead);
                readed    += lenToRead;
                remaining -= lenToRead;
            }
            byte[] headerHash = new byte[0x10];
            aa.doFinalButGetHash(headerHash);
            o.Seek(0x90, SeekOrigin.Begin);
            o.Write(headerHash, 0, headerHash.Length);

            // Header Complete

            // Generate Header Hash
            o.Seek(0, SeekOrigin.Begin);
            byte[] header       = new byte[0xA0];
            byte[] headerODummy = new byte[0xA0];
            o.Read(header, 0, header.Length);
            AppLoaderReverse a = new AppLoaderReverse();

            byte[] generatedHash = new byte[0x10];
            bool   result        = a.doAll(hashFlag, 0x00000001, header, 0, headerODummy, 0, header.Length, new byte[0x10], new byte[0x10], rifkey, generatedHash, 0);

            o.Seek(0xA0, SeekOrigin.Begin);
            o.Write(generatedHash, 0, generatedHash.Length);


            //KDSBest We don't know the DATA 0xB0 to 0x100!!!

            while (o.Length < 0x100)
            {
                o.Write(buffer, 0, 1);
            }


            o.Close();
            fin.Close();
            return(STATUS_OK);
        }
Пример #2
0
        private int decryptData(FileStream ii, FileStream o, NPD npd, EDATData data, byte[] rifkey)
        {
            int numBlocks           = (int)((data.getFileLen() + data.getBlockSize() - 1) / data.getBlockSize());
            int metadataSectionSize = ((data.getFlags() & FLAG_COMPRESSED) != 0 || (data.getFlags() & FLAG_0x20) != 0) ? 0x20 : 0x10;
            int baseOffset          = 0x100; //+ offset (unknown)

            for (int i = 0; i < numBlocks; i++)
            {
                ii.Seek(baseOffset + i * metadataSectionSize, SeekOrigin.Begin);
                byte[] expectedHash = new byte[0x10];
                long   offset;
                int    len;
                int    compressionEndBlock = 0;
                if ((data.getFlags() & FLAG_COMPRESSED) != 0)
                {
                    byte[] metadata = new byte[0x20];
                    ii.Read(metadata, 0, metadata.Length);
                    byte[] result = decryptMetadataSection(metadata);
                    offset = (int)(ConversionUtils.be64(result, 0)); // + offset (unknown)
                    len    = (int)(ConversionUtils.be32(result, 8));
                    compressionEndBlock = (int)(ConversionUtils.be32(result, 0xC));
                    ConversionUtils.arraycopy(metadata, 0, expectedHash, 0, 0x10);
                }
                else if ((data.getFlags() & FLAG_0x20) != 0)
                {
                    //NOT TESTED: CASE WHERE METADATASECTION IS 0x20 BYTES LONG
                    byte[] metadata = new byte[0x20];
                    ii.Read(metadata, 0, metadata.Length);
                    for (int j = 0; j < 0x10; j++)
                    {
                        expectedHash[j] = (byte)(metadata[j] ^ metadata[j + 0x10]);
                    }
                    offset = baseOffset + i * data.getBlockSize() + numBlocks * metadataSectionSize;
                    len    = (int)(data.getBlockSize());
                    if (i == numBlocks - 1)
                    {
                        len = (int)(data.getFileLen() % (new BigInteger(data.getBlockSize())));
                    }
                }
                else
                {
                    ii.Read(expectedHash, 0, expectedHash.Length);
                    offset = baseOffset + i * data.getBlockSize() + numBlocks * metadataSectionSize;
                    len    = (int)(data.getBlockSize());
                    if (i == numBlocks - 1)
                    {
                        len = (int)(data.getFileLen() % (new BigInteger(data.getBlockSize())));
                    }
                }
                int realLen = len;
                len = (int)((uint)(len + 0xF) & 0xFFFFFFF0);
                Debug.Print("Offset: %016X, len: %08X, realLen: %08X, endCompress: %d\r\n", offset, len, realLen, compressionEndBlock);
                ii.Seek(offset, SeekOrigin.Begin);
                byte[] encryptedData = new byte[len];
                byte[] decryptedData = new byte[len];
                ii.Read(encryptedData, 0, encryptedData.Length);
                byte[] key      = new byte[0x10];
                byte[] hash     = new byte[0x10];
                byte[] blockKey = calculateBlockKey(i, npd);

                ToolsImpl.aesecbEncrypt(rifkey, blockKey, 0, key, 0, blockKey.Length);
                if ((data.getFlags() & FLAG_0x10) != 0)
                {
                    ToolsImpl.aesecbEncrypt(rifkey, key, 0, hash, 0, key.Length);
                }
                else
                {
                    ConversionUtils.arraycopy(key, 0, hash, 0, key.Length);
                }
                int cryptoFlag = ((data.getFlags() & FLAG_0x02) == 0) ? 0x2 : 0x1;
                int hashFlag;
                if ((data.getFlags() & FLAG_0x10) == 0)
                {
                    hashFlag = 0x02;
                }
                else if ((data.getFlags() & FLAG_0x20) == 0)
                {
                    hashFlag = 0x04;
                }
                else
                {
                    hashFlag = 0x01;
                }
                if ((data.getFlags() & FLAG_KEYENCRYPTED) != 0)
                {
                    cryptoFlag |= 0x10000000;
                    hashFlag   |= 0x10000000;
                }
                if ((data.getFlags() & FLAG_DEBUG) != 0)
                {
                    cryptoFlag |= 0x01000000;
                    hashFlag   |= 0x01000000;
                }
                AppLoader a  = new AppLoader();
                byte[]    iv = (npd.getVersion() <= 1) ? (new byte[0x10]) : npd.getDigest();

                bool rresult = a.doAll(hashFlag, cryptoFlag, encryptedData, 0, decryptedData, 0, encryptedData.Length, key, npd.getDigest(), hash, expectedHash, 0);
                if (!rresult)
                {
                    Debug.WriteLine("Error decrypting block " + i);
                    // KDSBest find out why block 30 errors
                    //return STATUS_ERROR_DECRYPTING;
                }
                if ((data.getFlags() & FLAG_COMPRESSED) != 0)
                {
                    //byte[] decompress = new byte[Long.valueOf(data.getBlockSize()).intValue()];
                    //DECOMPRESS: MISSING ALGORITHM
                    //out.write(decompress, 0, data.getBlockSize());
                }
                else
                {
                    o.Write(decryptedData, 0, realLen);
                }
            }
            return(STATUS_OK);
        }
Пример #3
0
        private int checkHeader(byte[] rifKey, EDATData data, NPD npd, FileStream i)
        {
            i.Seek(0, SeekOrigin.Begin);
            byte[] header       = new byte[0xA0];
            byte[] o            = new byte[0xA0];
            byte[] expectedHash = new byte[0x10];
            //Version check
            Console.WriteLine("Checking NPD Version:" + npd.getVersion());
            if ((npd.getVersion() == 0) || (npd.getVersion() == 1))
            {
                if ((data.getFlags() & 0x7FFFFFFE) != 0)
                {
                    Console.WriteLine("ERROR: Incorrect Header Flags"); return(STATUS_ERROR_INCORRECT_FLAGS);
                }
            }
            else if (npd.getVersion() == 2)
            {
                if ((data.getFlags() & 0x7EFFFFE0) != 0)
                {
                    Console.WriteLine("ERROR: Incorrect Header Flags"); return(STATUS_ERROR_INCORRECT_FLAGS);
                }
            }
            else if (npd.getVersion() == 3 || (npd.getVersion() == 4))
            {
                if ((data.getFlags() & 0x7EFFFFC0) != 0)
                {
                    Console.WriteLine("ERROR: Incorrect Header Flags"); return(STATUS_ERROR_INCORRECT_FLAGS);
                }
            }
            else
            {
                Console.WriteLine("ERROR: Unsupported EDAT version (need keys)"); return(STATUS_ERROR_INCORRECT_VERSION);
            }

            {
                int keyIndex = 0;
                if (npd.getVersion() == 4)
                {
                    keyIndex = 1;
                }


                i.Read(header, 0, header.Length);
                i.Read(expectedHash, 0, expectedHash.Length);
                Console.WriteLine("Checking header hash:");
                AppLoader a        = new AppLoader();
                int       hashFlag = ((data.getFlags() & FLAG_KEYENCRYPTED) == 0) ? 0x00000002 : 0x10000002;
                if ((data.getFlags() & FLAG_DEBUG) != 0)
                {
                    hashFlag |= 0x01000000;
                }



                //Veryfing header
                bool result = a.doAll(hashFlag, 0x00000001, header, 0, o, 0, header.Length, new byte[0x10], new byte[0x10], rifKey, expectedHash, 0);
                if (!result)
                {
                    Console.WriteLine("Error verifying header. Is rifKey valid?.");
                    return(STATUS_ERROR_HEADERCHECK);
                }
                Console.WriteLine("Checking metadata hash:");
                a = new AppLoader();
                a.doInit(hashFlag, 0x00000001, new byte[0x10], new byte[0x10], rifKey);

                int sectionSize = ((data.getFlags() & FLAG_COMPRESSED) != 0) ? 0x20 : 0x010; //BUG??? What about FLAG0x20??
                //Determine the metadatasection total len
                int numBlocks = (int)((data.getFileLen() + data.getBlockSize() - 11) / data.getBlockSize());

                int readed     = 0;
                int baseOffset = 0x100;
                //baseOffset +=  modifier; //There is an unknown offset to add to the metadatasection... value seen 0
                long remaining = sectionSize * numBlocks;
                while (remaining > 0)
                {
                    int lenToRead = (HEADER_MAX_BLOCKSIZE > remaining) ? (int)remaining : HEADER_MAX_BLOCKSIZE;
                    i.Seek(baseOffset + readed, SeekOrigin.Begin);
                    byte[] content = new byte[lenToRead];
                    o = new byte[lenToRead];
                    i.Read(content, 0, content.Length);
                    a.doUpdate(content, 0, o, 0, lenToRead);
                    readed    += lenToRead;
                    remaining -= lenToRead;
                }
                result = a.doFinal(header, 0x90);


                if (!result)
                {
                    Console.WriteLine("Error verifying metadatasection. Data tampered");
                    return(STATUS_ERROR_HEADERCHECK);
                }
                return(STATUS_OK);
            }
        }