C#

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Text;

namespace TestConsole
{
	class Program
	{
		static void Main(string[] args)
		{
			string myString = "hj/dfsks jh/f12/353 @@2df 23/11/2008 kjdl jf\\ioi jr4398 rjeo i";
			string[] parts = myString.Split(' ');
			DateTime dateFound;
			CultureInfo culture = CultureInfo.CreateSpecificCulture("en-US");
			DateTimeStyles styles = DateTimeStyles.None;

			foreach (string part in parts)
			{
				DateTime date;
				if (DateTime.TryParseExact(part, "dd/MM/yyyy", culture, styles, out date))
				{
					dateFound = date;
					break;
				}
			}

		}
	}
}