HexCheat:
 Edit the file egame with the hex editor an

 search for     and change it to    result
 -------------------------------------------------------
 29 06 EE 4F    90 90 90 90         enough petrol
 FF 8F F0 4F    90 90 90 90         enough fire balls
 FF 8F FA 4F    90 90 90 90         enough rockets
 FF 06 00 95    90 90 90 90         enough energy/lifes