Cheat Engine

[AbrasiveZealot]

Hello,
Fairly recently I found an exploit that allows players to use any modified material file in the new (2007+) source engine (for games that use .vpk archives to pack materials), which allows a wide array of undetectable texture hacks, or "mathacks". The only problem with it, is that it involves renaming files, then patching the games memory, and then renaming files again. While this doesn't take very long to do manually, having to do it every time you launch the game get's very tedious, and accidentally forgetting a step can cause a VAC ban and a game crash. I have successfully made a batch file in windows that automates the process of renaming the files, and I'm wondering if it's possible to make a trainer that automates the process of patching the game memory.

All it really needs to be able to do is automatically attach to the correct process, search for an array of bytes, and then modify the result (there's always only one). It would be great if it's possible to get it to automatically run the script once opened, so that it's not necessary to push a button or anything. But if it's not possible then that's alright.

Also, on a somewhat related note; If it is possible to get it to automatically execute the script, would it be able to automatically close as well? Once the memory is patched there's no need to keep it open, you don't have to freeze it or anything. That way my batch file + trainer could be completely automatic and not require input from the user (other then launching the game and waiting for the menu to load).

EDIT:: If i wasn't being specific enough, I need to make a script that will...

Search the memory for:
[insert hexadecimal bytes]

And change the only result to:
[insert hexadecimal bytes]

But, it needs to not have a [disable] section. I would like to be able to close the trainer/cheat engine without it getting disabled.

And preferably...
Be able to automatically execute the patch, so i can run it from a batch file.
And close automatically once the patch has been made.

[Dark Byte]

you could do a lua script
strings_add(getAutoAttachList(),"processname")

function onOpenProcess()
autoAssemble([[script]])
closeCE()
end

where script is a simple aobscan replace script
you can of course do an aobscan in lua as well, but it's more complex and only intended if there is more than one result

[AbrasiveZealot]

While I really have no preference about it using lua or assembler as long as it works, I have a bit more experience with lua so it's easier for me to undersand.
After doing a bit of research I've found a thread ("auto search & first address add table?") and have some questions about it.

Since only one address is returned, does it still have to be added to the address list to be modified? And if it does, will the address list function still work properly without the cheat engine gui?

Searching through the help file, i was only able to find two things regarding changing or modifying a value; writeBytes and addresslist_doValueChange. Because i would like this to not require input i don't think addresslist_doValueChange will work so that leaves writeBytes. In the help file it says it's use is to change the value of a specific address, but the address isn't static so i cant see how this would do it.

Am i just missing something? I haven't been able to find much of anything about changing the result, and nothing at all about how to do something like this with the assembler.

This is what i have so far:

[Dark Byte]

auto assemble script that finds and replace the first occurance :

[AbrasiveZealot]

This is what i used, it works great:

[jaguarvn]

I usually scan value : 22939420328016 (exact value, 8bytes)
and change it to 214748364800350

Please have me how to do it automatic.
Thank you