IDA Question

[Achilees]

Trying to learn assembly if this is a stupid question my bad, but will appreciate any answers

.text:00547C10 ; =============== S U B R O U T I N E =======================================
.text:00547C10
.text:00547C10 ; Attributes: bp-based frame
.text:00547C10
.text:00547C10 sub_547C10      proc near               ; DATA XREF: .data:00B9F2CCo
.text:00547C10
.text:00547C10 var_8           = qword ptr -8
.text:00547C10 arg_0           = dword ptr  8
.text:00547C10

arg_0 means it is taking a 32 bit single argument ? I will assume it is integer ? If not how can i ?
var_8 .... what is this ?
I dont have money to spend on HEX-RAYS decompiler.

[Valediction]

You'll have to read the code below to be sure, and you may have to spend some learning assembly first if you're unsure about this, irrespective of whether you have hex-rays or not, since you'll need to check the asm sooner or later anyways. hex-rays can sometimes produce incorrect analysis.

arg_0 could be an integer, could be a pointer to whatever. Also note that analysis, while good in IDA, isn't 100% acurate neither in all cases.

About var, it represents the stack space the function uses for local variables, instead of showing it to you in terms of EBP or the stack pointer, it shows var, to represent that address in the stack.

[lolp1]

Trying to learn assembly if this is a stupid question my bad, but will appreciate any answers [...] I dont have money to spend on HEX-RAYS decompiler.

I'm just barley starting out learning too. You don't need hex-rays, but it is nice and there are *cough* options to get it with out spending a lot of money. The best tip I can give to you is if you want to learn assembly/reversing:

Then first do the basics, there is no short cuts. Nothing crazy, just get a solid basic understanding of how call stacks/registers/calling conventions/pointers/structures (ALL of those are important) work. Prior to this, attempting to reverse or poke around in IDA is like trying to inspect a cars engine that is broken, remove it, and repair the broken parts before you even know what a single engine part is. I wasted a lot of time not actually doing the work needed to actually start to learn this stuff, don't do that. Dive right in and build up.