Cheat Engine

deama1234 · Posted: Sat Dec 20, 2014 9:47 am Post subject: Jump hack problem

Alright, so I scanned for 1 (able to jump) and 0 (not able to jump) and got down to a single address. The problem is that when I freeze it, it doesn't actually give me infinite jumps, it sorta does but only if I REALLY mash the jump button a lot. So what I did was I tried some auto assembly scripts, these are what I found when I found what writes to that address:

inc [rdi+08]

if I change this to "nop" then my character falls through the ground when I jump. If I change it to ANYTHING else the game just crashes.

dec [rdi+08]

If I change ANYTHING on this one the game just crashes.

So... how do I "properly" change those instructions so the game doesn't crash? Or am I doing something wrong?

I also tried to "select current function" on dec [rdi+08] (it also includes inc [rdi+08] further below), here it is:
Note: To be more specific, I am refering to:

DragonAgeInquisition.exe+4581D1B - inc [rdi+08]
DragonAgeInquisition.exe+4581C8B - dec [rdi+08]

indianachones · Cheater Reputation: 0 Joined: 23 Nov 2014 Posts: 27

mmmm lets see.
could it be the same if you just teleport at a high height and then you fall down with gravity as usual?

if is that the case you may want to do this:

1- look for the address that stores the Y position of you character (assuming Y is height). Probably it will be a float or double number. just jump and use increse decrese method as always.
2- find what writes that address when you press the jump key
3- make an script that sets Y position address to the desired height

deama1234 · Posted: Mon Dec 22, 2014 7:38 pm Post subject:

indianachones · Cheater Reputation: 0 Joined: 23 Nov 2014 Posts: 27

ok. lets say that you found the Y position address.
i belive that there is 2 posible codes

1st code: 1 code when you go up and another code when you go down
2nd code: it sets height going up or down with the same opcode

well. the first 1 its easy you just nop the code that sends you down.

the second code its the problem and its really common to find. you have to check the previous value and if current value it is lower just nop it

Demolish · Cheater Reputation: 0 Joined: 27 Dec 2010 Posts: 32

I think these values are not made for finding if you can jump or not, these values are for finding that if you are still rising/falling or You are in the sky/or on ground, that may be your problem. You have to set [rdi+08] to 1 for a while after pressing jump key and set it back to 0 so it will recognize that you are on ground and jump then and after while it will detect that you are in the sky rising up.

deama1234 · Posted: Mon Dec 22, 2014 11:36 pm Post subject:

zm0d · Posted: Tue Dec 23, 2014 6:02 am Post subject:

What do you mean with infinite jumps?

A) Jumping 1 time and then flying to the universe?
B) Being able to jump again if you are still in air?

If A) then slightly increase the Y value.

If B) then get your value again, that indicates if you're in air or not. There you attach the Debugger with "Find out what accesses this address". Jump then ingame and check the result list of the breakpoint. I bet my ass there will be some CMP or TEST after the value got loaded to a register. And right after the CMP will come a JUMP and a CALL to the games jump function. Your job is now to let the game always execute the jump function regardless if the value indicating that you're in air is 0 or 1. (Probably by removing the CMP/TEST with NOPs)

deama1234 · Posted: Tue Dec 23, 2014 11:06 am Post subject:

Demolish · Cheater Reputation: 0 Joined: 27 Dec 2010 Posts: 32

Never try to nop inc or dec when it comes to bool value(because value will go to infinite or else to -infinite over time, and that value is to recognize true/false). Try to do something like this:

deama1234 · Posted: Tue Dec 23, 2014 5:45 pm Post subject: