internal byte[] Rebuild()
{
if (GPTBuffer == null)
{
TableSize = 0x4200;
TableOffset = 0;
GPTBuffer = new byte[TableSize];
}
else
{
Array.Clear(GPTBuffer, (int)TableOffset, (int)TableSize);
}
UInt32 PartitionOffset = TableOffset;
foreach (Partition CurrentPartition in Partitions)
{
ByteOperations.WriteGuid(GPTBuffer, PartitionOffset + 0x00, CurrentPartition.PartitionTypeGuid);
ByteOperations.WriteGuid(GPTBuffer, PartitionOffset + 0x10, CurrentPartition.PartitionGuid);
ByteOperations.WriteUInt64(GPTBuffer, PartitionOffset + 0x20, CurrentPartition.FirstSector);
ByteOperations.WriteUInt64(GPTBuffer, PartitionOffset + 0x28, CurrentPartition.LastSector);
ByteOperations.WriteUInt64(GPTBuffer, PartitionOffset + 0x30, CurrentPartition.Attributes);
ByteOperations.WriteUnicodeString(GPTBuffer, PartitionOffset + 0x38, CurrentPartition.Name, 0x48);
PartitionOffset += PartitionEntrySize;
}
ByteOperations.WriteUInt32(GPTBuffer, HeaderOffset + 0x58, ByteOperations.CRC32(GPTBuffer, TableOffset, TableSize));
ByteOperations.WriteUInt32(GPTBuffer, HeaderOffset + 0x10, 0);
ByteOperations.WriteUInt32(GPTBuffer, HeaderOffset + 0x10, ByteOperations.CRC32(GPTBuffer, HeaderOffset, HeaderSize));
return(GPTBuffer);
}
internal static void PatchImg(string dump)
{
using (var fil = File.Open(dump, FileMode.Open))
{
byte[] gptbuffer = new byte[0x4200];
fil.Seek(0x200, SeekOrigin.Begin);
fil.Read(gptbuffer, 0, 0x4200);
uint BackupLBA = ByteOperations.ReadUInt32(gptbuffer, 0x20);
uint LastUsableLBA = ByteOperations.ReadUInt32(gptbuffer, 0x30);
LogFile.Log("Previous BackupLBA: " + BackupLBA, LogType.ConsoleOnly);
LogFile.Log("Previous LastUsableLBA: " + LastUsableLBA, LogType.ConsoleOnly);
uint NewBackupLBA = 62078975u;
uint NewLastUsableLBA = 62078942u;
ByteOperations.WriteUInt32(gptbuffer, 0x20, NewBackupLBA);
ByteOperations.WriteUInt32(gptbuffer, 0x30, NewLastUsableLBA);
uint HeaderSize = ByteOperations.ReadUInt32(gptbuffer, 0x0C);
uint PrevCRC = ByteOperations.ReadUInt32(gptbuffer, 0x10);
LogFile.Log("Previous CRC: " + PrevCRC, LogType.ConsoleOnly);
ByteOperations.WriteUInt32(gptbuffer, 0x10, 0);
uint NewCRC = ByteOperations.CRC32(gptbuffer, 0, HeaderSize);
LogFile.Log("New CRC: " + NewCRC, LogType.ConsoleOnly);
ByteOperations.WriteUInt32(gptbuffer, 0x10, NewCRC);
LogFile.Log("Writing", LogType.ConsoleOnly);
fil.Seek(0x200, SeekOrigin.Begin);
fil.Write(gptbuffer, 0, 0x4200);
LogFile.Log("Done!", LogType.ConsoleOnly);
}
}
