///////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Overwrite the key value stored within the Prime Time executable file
/// </summary>
/// <param name="exePath">The path to the executable</param>
/// <param name="value">The key value to use</param>
/// <param name="keyOffset">The offset within the file to the key value and the offset
/// between the two DWORDs that make up the 64-bit integer</param>
///////////////////////////////////////////////////////////////////////////////////////////
public void OverwriteValueInEXE(string exePath, UInt64 value, FullKeyOffset keyOffset)
{
FileStream exeFileStream = File.OpenWrite(exePath);
BinaryWriter writer = new BinaryWriter(exeFileStream);
// Get to the offset
exeFileStream.Seek(keyOffset.KeyOffset, SeekOrigin.Begin);
// Break the value into its components
byte[] valBytes = UInt64ToArray(value, CharByteOrder);
// Write the first 4 bytes
for (int byteIndex = 0; byteIndex < 4; ++byteIndex)
{
writer.Write(valBytes[byteIndex]);
}
// Seek past the first 4-byte block seperating a 64-bit integer
exeFileStream.Seek(keyOffset.Intra64bitPadding, SeekOrigin.Current);
// Write the last 4 bytes
for (int byteIndex = 4; byteIndex < 8; ++byteIndex)
{
writer.Write(valBytes[byteIndex]);
}
exeFileStream.Close();
}
///////////////////////////////////////////////////////////////////////////////////////////
/// <summary>Get the key embedded within an executable</summary>
/// <param name="exeFile">The executable file path</param>
/// <param name="keyOffset">The offset within the EXE file of the game key</param>
/// <param name="keyPadding">The number of bytes between the two double words that make up
/// the key</param>
///////////////////////////////////////////////////////////////////////////////////////////
public UInt64 GetKeyFromExe(string exeFile, FullKeyOffset keyOffset)
{
FileStream exeFileStream = File.OpenRead(exeFile);
BinaryReader reader = new BinaryReader(exeFileStream);
// Get to the offset
exeFileStream.Seek(keyOffset.KeyOffset, SeekOrigin.Begin);
// Write the first 4 bytes
byte[] valBytes = new byte[8];
for (int byteIndex = 0; byteIndex < 4; ++byteIndex)
{
valBytes[byteIndex] = reader.ReadByte();
}
// Seek past the 4-byte block seperating a 64-bit value within a file
exeFileStream.Seek(keyOffset.Intra64bitPadding, SeekOrigin.Current);
// Write the last 4 bytes
for (int byteIndex = 4; byteIndex < 8; ++byteIndex)
{
valBytes[byteIndex] = reader.ReadByte();
}
// Close the file stream
exeFileStream.Close();
// Return the 64-bit key formed from its components
return(ArrayToUInt64(valBytes));
}
