asgardius/Ryujinx
1
0
Fork 0
mirror of https://github.com/GreemDev/Ryujinx synced 2024-12-23 04:16:32 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Simplify The Logic

Browse source
This commit is contained in:
Jacobwasbeast 2024-12-04 20:47:04 -06:00
parent 46f8b8fa85
commit 334e71528e
1 changed files with 103 additions and 120 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

223
src/Ryujinx.HLE/HOS/Services/Nfc/AmiiboDecryption/AmiiboBinReader.cs
View file

@ -3,60 +3,59 @@ using Ryujinx.HLE.HOS.Services.Nfc.Nfp;
using Ryujinx.HLE.HOS.Services.Nfc.Nfp.NfpManager;
using Ryujinx.HLE.HOS.Tamper;
using System;
using System.CodeDom;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Intrinsics.Arm;
using System.Text;
using System.Text.Json;
namespace Ryujinx.HLE.HOS.Services.Nfc.Bin
{
public class AmiiboBinReader
{
// Method to calculate BCC (XOR checksum) from UID bytes
private static byte CalculateBCC(byte[] uid, int startIdx)
private static byte CalculateBCC0(byte[] uid)
{
return (byte)(uid[startIdx] ^ uid[startIdx + 1] ^ uid[startIdx + 2] ^ 0x88);
return (byte)(uid[0] ^ uid[1] ^ uid[2] ^ 0x88);
}
private static byte CalculateBCC1(byte[] uid)
{
return (byte)(uid[3] ^ uid[4] ^ uid[5] ^ uid[6]);
}
// Method to read and process a .bin file
public static VirtualAmiiboFile ReadBinFile(byte[] fileBytes)
{
string keyRetailBinPath = GetKeyRetailBinPath();
if (string.IsNullOrEmpty(keyRetailBinPath))
{
Console.WriteLine("Key retail bin path not found.");
return new VirtualAmiiboFile();
}
byte[] initialCounter = new byte[16];
// Ensure the file is long enough
if (fileBytes.Length < 128 * 4) // Each page is 4 bytes, total 512 bytes
const int totalPages = 135;
const int pageSize = 4;
const int totalBytes = totalPages * pageSize;
if (fileBytes.Length < totalBytes)
{
Console.WriteLine("File is too short to process.");
return new VirtualAmiiboFile();
}
// Decrypt the Amiibo data
AmiiboDecrypter amiiboDecryptor = new AmiiboDecrypter(keyRetailBinPath);
byte[] decryptedFileBytes = amiiboDecryptor.DecryptAmiiboData(fileBytes, initialCounter);
// Assuming the UID is stored in the first 7 bytes (NTAG215 UID length)
if (decryptedFileBytes.Length != totalBytes)
{
Array.Resize(ref decryptedFileBytes, totalBytes);
}
byte[] uid = new byte[7];
Array.Copy(fileBytes, 0, uid, 0, 7);
// Calculate BCC values
byte bcc0 = CalculateBCC(uid, 0); // BCC0 = UID0 ^ UID1 ^ UID2 ^ 0x88
byte bcc1 = CalculateBCC(uid, 3); // BCC1 = UID3 ^ UID4 ^ UID5 ^ 0x00
byte bcc0 = CalculateBCC0(uid);
byte bcc1 = CalculateBCC1(uid);
Console.WriteLine($"UID: {BitConverter.ToString(uid)}");
Console.WriteLine($"BCC0: 0x{bcc0:X2}, BCC1: 0x{bcc1:X2}");
LogDebugData(uid, bcc0, bcc1);
// Initialize byte arrays for data extraction
byte[] nickNameBytes = new byte[20]; // Amiibo nickname is 20 bytes
byte[] nickNameBytes = new byte[20];
byte[] titleId = new byte[8];
byte[] usedCharacter = new byte[2];
byte[] variation = new byte[2];
@ -65,177 +64,160 @@ namespace Ryujinx.HLE.HOS.Services.Nfc.Bin
byte[] initDate = new byte[2];
byte[] writeDate = new byte[2];
byte[] writeCounter = new byte[2];
byte[] appId = new byte[8];
byte[] settingsBytes = new byte[2];
byte formData = 0;
byte[] applicationAreas = new byte[216];
byte[] appid = new byte[2];
byte[] SettingsBytes = new byte[2];
//// apply to decrypt bytes self.data[304:308] = self._calculate_crc32(self.data[308:520]).to_bytes(4, "little")
//byte[] crc32Bytes = new byte[212];
//Array.Copy(decryptedFileBytes, 308, crc32Bytes, 0, 212);
//byte[] toApply = BitConverter.GetBytes(CalculateCRC32(crc32Bytes));
//Array.Reverse(crc32Bytes);
//Array.Copy(toApply, 0, decryptedFileBytes, 304, 4);
// Reading specific pages and parsing bytes
for (int page = 0; page < 134; page++) // NTAG215 has 128 pages
for (int page = 0; page < totalPages; page++)
{
int pageStartIdx = page * 4; // Each page is 4 bytes
int pageStartIdx = page * pageSize;
byte[] pageData = new byte[4];
bool isEncrypted = IsPageEncrypted(page);
byte[] sourceBytes = isEncrypted ? decryptedFileBytes : fileBytes;
if (pageStartIdx + pageSize > sourceBytes.Length)
{
break;
}
Array.Copy(sourceBytes, pageStartIdx, pageData, 0, 4);
// Special handling for specific pages
switch (page)
{
case 0: // Page 0 (UID + BCC0)
Console.WriteLine("Page 0: UID and BCC0.");
case 0:
break;
case 2: // Page 2 (BCC1 + Internal Value)
case 2:
byte internalValue = pageData[1];
Console.WriteLine($"Page 2: BCC1 + Internal Value 0x{internalValue:X2} (Expected 0x48).");
break;
case 5:
// byte 0 amd 1 are settings
Array.Copy(pageData, 0, SettingsBytes, 0, 2);
Array.Copy(pageData, 0, settingsBytes, 0, 2);
break;
case 6:
// Bytes 0 and 1 are init date, bytes 2 and 3 are write date
Array.Copy(pageData, 0, initDate, 0, 2);
Array.Copy(pageData, 2, writeDate, 0, 2);
break;
case 8:
case 9:
case 10:
case 11:
case 12:
// Extract nickname bytes
case >= 8 and <= 12:
int nickNameOffset = (page - 8) * 4;
Array.Copy(pageData, 0, nickNameBytes, nickNameOffset, 4);
break;
case 21:
// Bytes 0 and 1 are used character, bytes 2 and 3 are variation
Array.Copy(pageData, 0, usedCharacter, 0, 2);
Array.Copy(pageData, 2, variation, 0, 2);
break;
case 22:
// Bytes 0 and 1 are amiibo ID, byte 2 is set ID, byte 3 is form data
Array.Copy(pageData, 0, amiiboID, 0, 2);
setID[0] = pageData[2];
formData = pageData[3];
break;
case 40:
case 41:
int appIdOffset = (page - 40) * 4;
Array.Copy(decryptedFileBytes, pageStartIdx, appId, appIdOffset, 4);
break;
case 64:
case 65:
// Extract title ID
int titleIdOffset = (page - 64) * 4;
Array.Copy(pageData, 0, titleId, titleIdOffset, 4);
Array.Copy(sourceBytes, pageStartIdx, titleId, titleIdOffset, 4);
break;
case 66:
// Bytes 0 and 1 are write counter
Array.Copy(pageData, 0, writeCounter, 0, 2);
// bytes 2 and 3 are appid
Array.Copy(pageData, 2, appid, 0, 2);
break;
// Pages 76 to 127 are application areas
case >= 76 and <= 129:
int appAreaOffset = (page - 76) * 4;
Array.Copy(pageData, 0, applicationAreas, appAreaOffset, 4);
if (appAreaOffset + 4 <= applicationAreas.Length)
{
Array.Copy(pageData, 0, applicationAreas, appAreaOffset, 4);
}
break;
}
}
// Debugging
uint titleIdStr = BitConverter.ToUInt32(titleId, 0);
string usedCharacterStr = BitConverter.ToString(usedCharacter).Replace("-", "");
string variationStr = BitConverter.ToString(variation).Replace("-", "");
string amiiboIDStr = BitConverter.ToString(amiiboID).Replace("-", "");
string formDataStr = formData.ToString("X2");
string setIDStr = BitConverter.ToString(setID).Replace("-", "");
uint settingsStr = BitConverter.ToUInt16(SettingsBytes, 0);
string nickName = Encoding.BigEndianUnicode.GetString(nickNameBytes).TrimEnd('\0');
string head = usedCharacterStr + variationStr;
string tail = amiiboIDStr + setIDStr + "02";
string finalID = head + tail;
string initDateStr = BitConverter.ToString(initDate).Replace("-", "");
string writeDateStr = BitConverter.ToString(writeDate).Replace("-", "");
Console.WriteLine($"Title ID: {titleIdStr}");
Console.WriteLine($"Head: {head}");
Console.WriteLine($"Tail: {tail}");
Console.WriteLine($"Used Character: {usedCharacterStr}");
Console.WriteLine($"Form Data: {formDataStr}");
Console.WriteLine($"Variation: {variationStr}");
Console.WriteLine($"Amiibo ID: {amiiboIDStr}");
Console.WriteLine($"Set ID: {setIDStr}");
Console.WriteLine($"Final ID: {finalID}");
Console.WriteLine($"Nickname: {nickName}");
Console.WriteLine($"Init Date: {initDateStr}");
Console.WriteLine($"Write Date: {writeDateStr}");
Console.WriteLine($"Settings: {settingsStr}");
Console.WriteLine("Length of Application Areas: " + applicationAreas.Length);
ushort settingsValue = BitConverter.ToUInt16(settingsBytes, 0);
string nickName = Encoding.BigEndianUnicode.GetString(nickNameBytes).TrimEnd('\0');
ushort initDateValue = BitConverter.ToUInt16(initDate, 0);
ushort writeDateValue = BitConverter.ToUInt16(writeDate, 0);
DateTime initDateTime = DateTimeFromTag(initDateValue);
DateTime writeDateTime = DateTimeFromTag(writeDateValue);
ushort writeCounterValue = BitConverter.ToUInt16(writeCounter, 0);
LogFinalData(titleId, appId, head, tail, finalID, nickName, initDateTime, writeDateTime, settingsValue, writeCounterValue, applicationAreas);
VirtualAmiiboFile virtualAmiiboFile = new VirtualAmiiboFile
{
FileVersion = 1,
TagUuid = uid,
AmiiboId = finalID
AmiiboId = finalID,
FirstWriteDate = initDateTime,
LastWriteDate = writeDateTime,
WriteCounter = writeCounterValue,
};
ushort initDateValue = BitConverter.ToUInt16(initDate, 0);
ushort writeDateValue = BitConverter.ToUInt16(writeDate, 0);
DateTime initDateTime = DateTimeFromTag(initDateValue);
DateTime writeDateTime = DateTimeFromTag(writeDateValue);
Console.WriteLine($"Parsed Init Date: {initDateTime}");
Console.WriteLine($"Parsed Write Date: {writeDateTime}");
virtualAmiiboFile.FirstWriteDate = initDateTime;
virtualAmiiboFile.LastWriteDate = writeDateTime;
virtualAmiiboFile.WriteCounter = BitConverter.ToUInt16(writeCounter, 0);
VirtualAmiibo.SaveAmiiboFile(virtualAmiiboFile);
VirtualAmiibo.applicationBytes = applicationAreas;
return virtualAmiiboFile;
}
public static uint CalculateCRC32(byte[] input)
private static void LogDebugData(byte[] uid, byte bcc0, byte bcc1)
{
// Setup CRC 32 table
uint p0 = 0xEDB88320u | 0x80000000u;
uint[] u0 = new uint[0x100];
Console.WriteLine($"UID: {BitConverter.ToString(uid)}");
Console.WriteLine($"BCC0: 0x{bcc0:X2}, BCC1: 0x{bcc1:X2}");
}
for (uint i = 1; i < 0x100; i++)
private static void LogFinalData(byte[] titleId, byte[] appId, string head, string tail, string finalID, string nickName, DateTime initDateTime, DateTime writeDateTime, ushort settingsValue, ushort writeCounterValue, byte[] applicationAreas)
{
Console.WriteLine($"Title ID: 0x{BitConverter.ToString(titleId).Replace("-", "")}");
Console.WriteLine($"Application Program ID: 0x{BitConverter.ToString(appId).Replace("-", "")}");
Console.WriteLine($"Head: {head}");
Console.WriteLine($"Tail: {tail}");
Console.WriteLine($"Final ID: {finalID}");
Console.WriteLine($"Nickname: {nickName}");
Console.WriteLine($"Init Date: {initDateTime}");
Console.WriteLine($"Write Date: {writeDateTime}");
Console.WriteLine($"Settings: 0x{settingsValue:X4}");
Console.WriteLine($"Write Counter: {writeCounterValue}");
Console.WriteLine("Length of Application Areas: " + applicationAreas.Length);
}
private static uint CalculateCRC32(byte[] input)
{
uint[] table = new uint[256];
uint polynomial = 0xEDB88320;
for (uint i = 0; i < table.Length; ++i)
{
uint t0 = i;
for (int j = 0; j < 8; j++)
uint crc = i;
for (int j = 0; j < 8; ++j)
{
if ((t0 & 1) != 0)
{
t0 = (t0 >> 1) ^ p0;
}
if ((crc & 1) != 0)
crc = (crc >> 1) ^ polynomial;
else
{
t0 >>= 1;
}
crc >>= 1;
}
u0[i] = t0;
table[i] = crc;
}
// Calculate CRC32 from table
uint t = 0x0;
foreach (byte k in input)
uint result = 0xFFFFFFFF;
foreach (byte b in input)
{
t = (t >> 8) ^ u0[(k ^ t) & 0xFF];
byte index = (byte)((result & 0xFF) ^ b);
result = (result >> 8) ^ table[index];
}
return t ^ 0xFFFFFFFFu;
return ~result;
}
private static string GetKeyRetailBinPath()
@ -245,9 +227,6 @@ namespace Ryujinx.HLE.HOS.Services.Nfc.Bin
public static bool IsPageEncrypted(int page)
{
// 0-4 are not encrypted, 5-12 is encrypted, 13-39 is not encrypted,
// 40-129 is encrypted, and 130-134 is not encrypted.
return (page >= 5 && page <= 12) || (page >= 40 && page <= 129);
}
@ -255,10 +234,14 @@ namespace Ryujinx.HLE.HOS.Services.Nfc.Bin
{
try
{
var day = value & 0x1F;
var month = (value >> 5) & 0x0F;
var year = (value >> 9) & 0x7F;
return new DateTime(1970 + year, month, day);
int day = value & 0x1F;
int month = (value >> 5) & 0x0F;
int year = (value >> 9) & 0x7F;
if (day == 0 || month == 0 || month > 12 || day > DateTime.DaysInMonth(2000 + year, month))
throw new ArgumentOutOfRangeException();
return new DateTime(2000 + year, month, day);
}
catch
{