brannondorsey / wifi-cracking

Crack WPA/WPA2 Wi-Fi Routers with Airodump-ng and Aircrack-ng/Hashcat

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Negative fixed channel

ArslanAle opened this issue · comments

Hi,

For capturing handshake, after running command airodump-ng -c 52 --bssid DC:9F:DB:30:C1:7A -w . mon0 I see "fixed channel mon0: -1" on the top right corner.

 CH 52 ][ Elapsed: 4 s ][ 2017-08-05 13:08 ][ fixed channel mon0: -1 

 BSSID                       PWR RXQ  Beacons    #Data, #/s  CH  MB   ENC  CIPHER AUTH ESSID
                                                                                          
 DC:9F:DB:30:C1:7A  -51       0        5                  0    0      4  54e  WPA2 CCMP   PSK  EasyBox-XXX
                                                                                          
 BSSID              STATION            PWR   Rate    Lost    Frames  Probe

[ WPA handshake: .. is only displayed (momentarily) if I reconnect to wifi with same machine where I am running this aiodump.

From the Aircrack-ng website:

If you are having issues injecting or if you are receiving an error message talking about channel -1 or fixed channel in airodump-ng (top right of the screen) or aireplay-ng, kill the network managers using "airmon-ng check kill" before putting the wireless card in monitor mode.

I would recommend running airmon-ng check first to see if it lists any processes that may need to be killed. If so, follow that with airmon-ng check kill. If that doesn't work, I've also had luck putting my device into monitor mode manually with:

sudo ifconfig wlan0 down
sudo iwconfig wlan0 mode monitor
sudo ifconfig wlan0 up

This method puts the device into monitor mode without creating a new mon0 virtual device, so be sure to use wlan0 where you would otherwise use mon0 for all of the tasks in the tutorial.

airmon-ng check kill worked like a charm. Thanks.

I have the same issue but none of solutions worked for me
I used airmon-ng check kill before putting wlan in monitor mode but the problem still remain.
and solution2 give me this error :

~# sudo iwconfig wlan0 mode monitor
Error for wireless request "Set Mode" (8B06) :
    SET failed on device wlan0 ; Operation not supported.

any idea?

It looks like your device may not support monitor mode. I'd recommend purchasing a compatible USB WiFi dongle from this list.