Cheat Engine

[Inotamira Orani]

I've been trying to hack a game for some time now (you might have seen the two threads I've been in) and I've figured out what it does.

The game generates a random number (presumably after loading a save or when making a new character) and adds it to an existing value.

I believe it saves these values and their respective numbers in the save files as well, but this is far from what I'm working on right now.

The number is usually something completely absurd like 45682348273491, if your value is 5 then this random number would be 45682348273486.

Numbers are generated and added for all values except stackable items such as gold and the like.

What I would like to know, is if it's possible to hunt down the random number generator (the line of code that handles the number(s)) and force it to always be zero so the values turn up normal and if so, how.

[Rissorr]

Try changing the value type to Double or Float,
Also look what acsess this address and you can figure out the real one (if its not double or float, because there is just nothing to figure out)

[Inotamira Orani]

[cashd]

i can suggest you another way.
if you know where in the code it produce the pseudo random number algorithm you may patch there by ollydbg or cheat engine(i prefer olly )

if you know exactly which number is multiplyed by the random you can use ollydbg or cheat engine
in ollydbg you may try insert breakpoint on access read/write
and look at the assembly code

p.s
if you want to predict it dont use cheat engine for that, use ida pro and ollydbg
it is better tool to reverse code

[Inotamira Orani]

The problem there is that I don't comprehend Ollydbg very well, when the game starts it winds up inside a DLL instead of the game and I really don't understand what I'm supposed to be looking for or how to watch for shifting values in it let alone insert break points

[cashd]

if you want to be advanced cheater and not newbie you should learn how to use ollydbg and ida pro, it is very good tool for the kind things you want to do.
you may start lena151 tutorials to understand how to work with ollydbg.

about the dll, it doesnt matter which moudle it is, you still can analyze the function.
my suggestion most of the times when i see random number in the wild they use GetTickCount() api
for example
you want to get number between 0 to 25
it should be in assembly
GetTickCount()%25
if you want try to get the same result everytime
you should patch GetTickCount to return 0 always
maybe it would do more affects to the game like speed hacks and etc
but you can check it

[desertricker]

[Rissorr]

If you find the value that are multiplied by random number/encrypted/just a random number like this 547926789256
What i would do to find the REAL ONE (the not encrypted/multiplied)

1. right click > what writes
2. find the code/instruction that writes the long number
3. nop it/change it so it will NOT multiply/encrypt the long number

Hope you understand