[wups]

Challenge accepted:

Sorry, but it really does suck.
Java version, if anyone wants to test:

Код:

public static String rit_DeHash(String buffer)
	{
		int length = buffer.length();
		String result = "";
		String temp = "";
		for(int i=0;i<length;i++)
		{
			temp = temp + buffer.charAt(i);
			if(Integer.parseInt(temp) % 7557 == 0 && Integer.parseInt(temp)!= 0)
			{
				if(i < length-1 && buffer.charAt(i+1) == '0') continue;
				result += Character.toString((char) (Integer.parseInt(temp)/7557));
				//System.out.println(result);
				temp = "";
			}
			
		}
		return result;
		
	}