; Filename: MovingData.nasm
; Author:  Vivek Ramachandran
; Website:  http://securitytube.net
; Training: http://securitytube-training.com 
;
;
; Purpose: Mov instructions in 64-bit CPU

global _start			

section .text
_start:

	; mov immediate data to register 
	mov rax, 0xaaaaaaaabbbbbbbb
	mov eax, 0xaaaaaaaa
	mov rax, 0xaaaaaaaabbbbbbbb
	mov al, 0x11
	mov rax, 0xaaaaaaaabbbbbbbb
	mov ah, 0xcc
	mov rax, 0xaaaaaaaabbbbbbbb
	mov ax, 0xdddd

	 
	; mov register to register 

	mov rbp, rax
	mov r10, rbp
	
	mov r11d, r10d
	mov r12w, r11w	
	mov r13b, r12b
		

	; mov from memory into register 

	mov rsi, [sample2]
	mov r14d, [sample]
	mov r15w, [sample]
	mov dil, [sample]
	

	; mov from register into memory 

	mov rax, [sample2]
	mov byte [sample], al	
	mov word [sample], ax
	mov dword [sample], eax
	mov qword [sample], rax


	; lea demo

	lea rax, [sample]
	lea rbx, [rax] 


	; xchg demo 
	mov rax, 0x1234567890abcdef
	mov rbx, 0x9999999999999999

	xchg rax, rbx
 
	
	; exit the program gracefully  

	mov rax, 0x3c
	mov rdi, 0		
	syscall


section .data

sample:	db 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x11, 0x22
sample2: dq 0x1122334455667788
sample3: times 8 db 0x00