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CSharp · Console

/Program.cs

using System;
using System.Linq;
					
public class Program
{
	public static void Main()
	{
		long number = Convert.ToInt64("48FF0015E8", 16);
		byte[] bytes = BitConverter.GetBytes(number);
		if (BitConverter.IsLittleEndian)
    		Array.Reverse(bytes);
		var result = bytes.ToList().Skip(3).ToList();
		Console.WriteLine(string.Join(",",result.Select(b => string.Format("{0:X}", b))));
		
	}
}