Add trf support.
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SilicaAndPina
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40d18fb72a
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3cb1e1d0fd
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@ -33,41 +33,74 @@ namespace CpUpES2_Decrypt
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static int Main(string[] args)
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{
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RsaKeyParameters Rsa_Public_Key = new RsaKeyParameters(false, new BigInteger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new BigInteger("10001", 16));
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RsaKeyParameters FsImage_Public_Key = new RsaKeyParameters(false, new BigInteger("A9697F9D9343CADE68E04F9E356E6AB6BBC7DE36A4D81B98A83BC12BE3F6DF96ED7A64389456ACA933BEBFBA4FFEF05CF45F2F886F434FBBC3A01348533070C0B7D5E9C21EFE53E95A6019DB51C12C6BAFEB94E992287963448E59606384B99F3FF3E5EB6AA08BF32A4DBA7A312520CEC2B69BB20A6D0640B117170AA2DDA1FB590AEE7ADFC4E80DFCF27FA55DDEC92C07922FDD05AB1618DCB727AA6FF70027A9410BC845E50EAFD46C0FD92FF500672DE56489C669B0AA481FFD75E99E21A8DC2F9F9E87957B46BBF63FB7DDBE8B8CA861BA349A62458E855EE78C3DD6791F92E76422144E51295B1337E15C126DF6FA0C29321BC1D7C00E3C19EEF3A3E7A5", 16), new BigInteger("10001", 16));
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if(args.Length < 1)
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{
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Console.WriteLine("Usage: CpUpES2Decrypt.exe <UpdaterES2.CpUp File>");
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Console.WriteLine("Usage: CpUpES2-Decrypt.exe <UpdaterES2.CpUp File OR fsimage1.trf File>");
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return 2;
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}
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else if(File.Exists(args[0]))
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{
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// Parse Header
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FileStream fs = File.OpenRead(args[0]);
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BinaryReader bfs = new BinaryReader(fs);
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UInt32 Magic = bfs.ReadUInt32();
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UInt32 Version = bfs.ReadUInt32();
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UInt64 Reserved = bfs.ReadUInt64();
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UInt32 Type = bfs.ReadUInt32();
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UInt32 TrfSize = bfs.ReadUInt32();
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UInt32 TrfStartAddress = bfs.ReadUInt32();
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UInt32 TrfExtractedSize = bfs.ReadUInt32();
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UInt32 FullSize = bfs.ReadUInt32();
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UInt32 StartAddress = bfs.ReadUInt32();
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UInt32 ExtractedSize = bfs.ReadUInt32();
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if (Magic == 0x43705570) //CpUp
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if (Magic == 0x43705570 || Magic == 0x23642745)
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{
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Console.WriteLine("CpUp Magic: 0x" + Magic.ToString("X"));
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Console.WriteLine("CpUp Version: 0x" + Version.ToString("X"));
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Console.WriteLine("CpUp Reserved Space: 0x" + Reserved.ToString("X"));
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Console.WriteLine("CpUp Type: 0x" + Type.ToString("X"));
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Console.WriteLine("CpUp Size: 0x" + FullSize.ToString("X"));
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Console.WriteLine("CpUp Start Address: 0x" + StartAddress.ToString("X"));
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Console.WriteLine("CpUp Extracted Size: 0x" + ExtractedSize.ToString("X"));
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String FileType = "CpUp";
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if (Magic == 0x23642745)
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FileType = "Trf";
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UInt32 UsedStartAddress = StartAddress;
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UInt32 UsedSize = FullSize;
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UInt32 UsedExtractedSize = ExtractedSize;
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Boolean IsEncrypted = true;
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String FileName = Path.ChangeExtension(args[0], "tar.gz");
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if (FileType == "Trf")
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{
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UsedStartAddress = TrfStartAddress;
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UsedSize = TrfSize;
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UsedExtractedSize = TrfExtractedSize;
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FileName = Path.ChangeExtension(args[0], "img");
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fs.Seek(UsedStartAddress, SeekOrigin.Begin); // Hacky but it works.
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UInt32 EncMagic = bfs.ReadUInt32();
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if (EncMagic == 0xCDE4A048)
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IsEncrypted = false;
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}
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Console.WriteLine(FileType+" Magic: 0x" + Magic.ToString("X"));
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Console.WriteLine(FileType + " Version: 0x" + Version.ToString("X"));
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Console.WriteLine(FileType + " TSize: 0x" + TrfSize.ToString("X"));
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Console.WriteLine(FileType + " TStart Address: 0x" + TrfStartAddress.ToString("X"));
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Console.WriteLine(FileType + " TExtracted Size: 0x" + TrfExtractedSize.ToString("X"));
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Console.WriteLine(FileType + " CSize: 0x" + FullSize.ToString("X"));
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Console.WriteLine(FileType + " CStart Address: 0x" + StartAddress.ToString("X"));
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Console.WriteLine(FileType + " CExtracted Size: 0x" + ExtractedSize.ToString("X"));
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Console.WriteLine("\n\nRSA Decrypting Key Information...");
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// Dervie AES Key
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Pkcs1Encoding pkcs1Encoding = new Pkcs1Encoding(new RsaEngine());
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pkcs1Encoding.Init(false, Rsa_Public_Key);
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if(FileType == "Trf")
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pkcs1Encoding.Init(false, FsImage_Public_Key);
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else if (FileType == "CpUp")
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pkcs1Encoding.Init(false, Rsa_Public_Key);
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pkcs1Encoding.GetInputBlockSize();
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fs.Seek(-0x100, SeekOrigin.End);
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@ -84,21 +117,23 @@ namespace CpUpES2_Decrypt
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Array.ConstrainedCopy(HeaderDecrypted, 0x10, Key, 0x0, 0x10);
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Array.ConstrainedCopy(HeaderDecrypted, 0x20, Sha1Hash, 0x0, 0x14);
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Console.WriteLine("CpUp Key: " + BitConverter.ToString(Key));
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Console.WriteLine("CpUp Iv: " + BitConverter.ToString(Iv));
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Console.WriteLine("CpUp Sha1: " + BitConverter.ToString(Sha1Hash));
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Console.WriteLine(FileType + " Key: " + BitConverter.ToString(Key));
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Console.WriteLine(FileType + " Iv: " + BitConverter.ToString(Iv));
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Console.WriteLine(FileType + " Sha1: " + BitConverter.ToString(Sha1Hash));
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Console.WriteLine("\n\nAES Decrytping CpUp File...");
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Console.WriteLine("\n\nAES Decrypting "+FileType+" File...");
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// Decrypt Update
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fs.Seek(StartAddress, SeekOrigin.Begin);
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Byte[] UpdateData = new Byte[(FullSize - StartAddress) - 0x100];
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fs.Seek(UsedStartAddress, SeekOrigin.Begin);
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Byte[] UpdateData = new Byte[(UsedSize - UsedStartAddress) - 0x100];
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fs.Read(UpdateData, 0x00, UpdateData.Length);
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Byte[] UpdateDecrypted = Aes_128_Decrypt(UpdateData, Key, Iv);
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if(IsEncrypted)
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UpdateData = Aes_128_Decrypt(UpdateData, Key, Iv);
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fs.Close();
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String FileName = Path.ChangeExtension(args[0], "tar.gz");
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fs = File.OpenWrite(FileName);
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fs.Write(UpdateDecrypted, 0x00, (Int32)ExtractedSize);
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fs.Write(UpdateData, 0x00, (Int32)UsedExtractedSize);
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fs.Close();
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Console.WriteLine("Decrypted file saved to: " + FileName);
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@ -111,7 +146,7 @@ namespace CpUpES2_Decrypt
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}
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else
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{
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Console.WriteLine("Invalid CPUP! (Magic = 0x" + Magic.ToString("X")+")");
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Console.WriteLine("Unknown Filetype! (Magic = 0x" + Magic.ToString("X")+")");
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return 1;
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}
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}
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14
README.md
14
README.md
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@ -1,9 +1,7 @@
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# CpUpES2-Decrypt
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A tool to decrypt "UpdaterES2.CpUp" from PSVita DevKit Update Files
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Made possible by Zecoaxco and VVildCard777 for dumping the CP EMMC.
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And Mathieulh for helping me with stuffs, and answering all my stupid questions.
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Output is a tar.gz file, where fsimage1.trf is encrypted, and fsimage0.trf is signed (but unencrypted) AXFS file-system image.
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fsimage decryption : <to-be-developed>
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A tool to decrypt "UpdaterES2.CpUp" from PSVita DevKit Update Files as well as the "fsimage1.trf" Encrypted AXFS Filesystem image inside it.
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Made possible by Zecoaxco and VVildCard777 for dumping the CP EMMC.
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And Mathieulh for helping me with stuffs, and answering all my stupid questions.
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Output is a tar.gz file, where fsimage1.trf is encrypted, and fsimage0.trf is signed (but unencrypted) AXFS file-system image.
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