I was just wondering if there was any way to call malloc in assembly (I'm using FASM)? Thanks for any help.

Not unless you define the function malloc yourself first. malloc is a C run-time function. If you're writing in assembly, presumably you're not using the C run-time library. If you are, you can then just call it, but you'll need to know the calling conventions documented for your particular version of C run-time library which came with your C compiler.