Cheat Engine

[Aqua Regia]

I'm new to assembly, although I know other languages. I would like a brief explanation of some things in how assembly works.

When I allocate new memory and write code in that area, will that code ever excecute if I don't jump there? If not, why?

When creating one of those tick boxes in CE, where you write assembly code after [enable] and [disable], I've seen that the most common way to make the program run your code instead of the original code you write something like:

01646C4B:
jmp newmem
nop

All the examples I've seen only use one "nop", but I'm guessing you must use more nops if the instruction you're replacing is longer, or am I wrong?

If there are other stuff that are important to know that differs from other programming languages, please tell me.

[Slugsnack]

code execution must be changed to the new memory for the code inside it to be run. there are other ways of changing code flow, like call.

long jmp takes 5 bytes the nop is not necessary. as long as you remember what instructions you overwrote and jmp back to an address with an instruction instead of halfway through you are good to go

assembly language.. differences ? more than there are similarities. when you code assembler try not to think high level

try to post examples of what you need help with exactly..

[Dark Byte]

the nops make it easier for the labeling system to deal with the return jump
e.g:
01646c4b: might be one 4 byte instruction and after that a 5 byte instruction.
Since the first one isn't enough, both instructions would be overwritten by the jmp, resulting in a total of 9 bytes of instruction code. The jump is 5 bytes, so followed by 4 nop's

[Aqua Regia]

Thank you for your replies.

I recently learned python in which a code can look like this: