Cheat Engine

hiro928 · Newbie cheater Reputation: 0 Joined: 15 Aug 2016 Posts: 16

hey everyone, i'm trying to make an inf. health code for Bioshock 2, and i ran into something wierd, i found my health value, and clicked to see what writes to it, then took a hit, and 2 OP codes came up, one that looked like this

movss [esi+000005C0],xmm1

and one that looked like this

fstp dword ptr [esi+000005C0]

i tried nop'ing one, then the other, and health still went down, and when i nop'ed both at the same time, the game crashed, what am i doing wrong? any help would be appriciated

i ran into this same problem with Alan Wake and couldn't figure it out either

Kronogenics · Posted: Wed Dec 21, 2016 6:19 pm Post subject:

Well noping isn't always the end all be all for things. Making a script may be useful. For example just make a simple script that will compare to a known value around your players health and then have it set a variable. If you can get it to set a variable then you can try to alter your health. A screen shot of the surrounding instructions would prove useful. From what it looks like a simple

hiro928 · Newbie cheater Reputation: 0 Joined: 15 Aug 2016 Posts: 16

Kronogenics · Posted: Wed Dec 21, 2016 6:57 pm Post subject:

The first one looks like what you are looking for.

hiro928 · Newbie cheater Reputation: 0 Joined: 15 Aug 2016 Posts: 16

Kronogenics · Posted: Wed Dec 21, 2016 7:14 pm Post subject:

movss means move scalar single (single floating point value) from the second operand (xmm1) to the first operand ([ecx+000005C0) fstp means float store pop so it stores the float at whatever address it is referencing ([ecx+000005C0) and then pops the stack. I don't have the game and am working with not very much so out of the two operands it looks as if the movss is what you want. But, I am not totally sure.

hiro928 · Newbie cheater Reputation: 0 Joined: 15 Aug 2016 Posts: 16

Flux. · Posted: Wed Dec 21, 2016 8:50 pm Post subject:

Hi hiro928,

I am new to this aswell, do try what Kronogenics said, i would also try the second op in your table like this -

hiro928 · Newbie cheater Reputation: 0 Joined: 15 Aug 2016 Posts: 16

Kronogenics · Posted: Wed Dec 21, 2016 11:04 pm Post subject:

fstp st(0) will essentially take the value inside of st(0) and put it inside of st(0) then popping the stack.

STN · Posted: Wed Dec 21, 2016 11:27 pm Post subject:

If you want to nop, then use Find out what "accesses" instead of write and look for a sub instruction.

If you don't care for that then do code injection at either of those instructions and write your desired value to [esi+000005C0]

Make sure the instructions only acceseses your health so enemy doesnt get the benefit.

hiro928 · Newbie cheater Reputation: 0 Joined: 15 Aug 2016 Posts: 16

STN · Posted: Thu Dec 22, 2016 8:09 am Post subject:

Aob injection is code injection. Code injection means injecting your code which you do with aob injection Wink

It can either be permanent if you write to the file or temporary if you just edit memory which you are.

hiro928 · Newbie cheater Reputation: 0 Joined: 15 Aug 2016 Posts: 16

Kronogenics · Posted: Fri Dec 23, 2016 2:29 am Post subject:

Usually it would be more beneficial to use the AOB injection technique (unless the injection point is static) AOB also helps to combat games that update.