HexCheats:
 Edit the file aladdin.exe with a hex editor as follows:

 - to get immortal

   search for              2E FF 0E B2 0B
   and replace it through  90 90 90 90 90

 - to get an unlimited amount of apples

   search for              2E FF 0E DA 0B
   and replace it through  90 90 90 90 90
   search for              2E A3 42 17 2E C7
   and replace it through  90 90 90 90 2E C7

 - to get an unlimited number of items

   search for              2E 83 2E DC 0B 0A
   and replace it through  90 90 90 90 90 90
   search for              2E A3 40 17 2E C7
   and replace it through  90 90 90 90 2E C7
   search for              2E 83 2E DC 0B 05
   and replace it through  90 90 90 90 90 90

Cheat:

 After the start of the game (on the screen where all items are
 explained) press the [~] key, go on two screens (to the one with
 the miracle lamp) and here press [Backspace].

 Now you have the following keys in the game:

 [1] followed by [A]-[M]   Choose a level
 [A]     5 apples
 [G]     5 gems
 [H]     harm mode / invulnerability
 [M]     move mode / free moves on the screen
 [U]     under mode / additional elements in some levels

 Cheat by Matthias Klein, klein@gsse.sni.de