Halloween Harry 1 (Crack)
This program will modify all of your save game files for Halloween Harry 1 (by Apogee) so that you will have 75 lives and 75 omegas, thermogrenades, photons, missles, and micronukes.
You will also be given $25,000 to buy more ammo.
If you don't like to start over a million times and just want to have some fun with this fairly decent new game, cheat!
I recommend that you save copies of all your game save files (they are named SLOT.? where "?" is a number from 1 to 5) before running this program in case you want to play as a mortal again!
Place the HARRYCHT.EXE file in the same directory as the save files and enter HARRYCHT to modify the files.
DETAILS:
This program works by changing the following bytes:
byte 20h (32 decimal)=omegas
byte 21h (33 decimal)=thermogrenades
byte 22h (34 decimal)=photons
byte 23h (35 decimal)=missles
byte 24h (36 decimal)=micronukes
bytes 25h and 26h (37 and 38 decimal)=$
byte 27h (39 decimal)=lives
If you are handy with a hex editor, you can advance levels by increasing the value stored in byte 29h (41 decimal). Please note that the save file is stored as a simple substitution cipher where the stored value is equal to the actual hex value XOR 29.
What is XOR 29? XOR is an operation performed at the binary level. Each bit of the result is set to 1 if the corresponding bits of each operand are opposite.
For example:
01h is 00000001 binary
29h is 00101001 binary
If you XOR 01h by 29h, you get
00101000 binary=28h
Thus, 01h is stored in the save file as 28h.
Here are some examples to get you started:
HEX XOR 29
00 29
01 28
02 2B
03 2A
04 2D
05 2C
06 2F
07 2E
08 21
09 20
0A 23
and so on.
You can play around with the other bytes as there does not appear to be a checksum involved, but remember that the values are saved after XOR29.
This program is brought to you as FREEWARE by Michael P. Hoffmann and is copyright (C) 1993 by Michael P. Hoffmann, all rights reserved.
GEnie: M.HOFFMANN1
Delphi: MHOFFMANN
INTERNET: M.HOFFMANN1@GENIE.GEIS.COM
MHOFFMANN@DELPHI.COM
