airodump-ng: sometimes show wrong channel when network not have a valid essid

[m4tr1x]

hi,
sometimes airodump-ng show wrong channel when it found a network with hidden/invalid essid (ex.: <length: 0>).
This bug it's related to bad radiotap parsing,
the result it's a wrong converted value (133, 108, etc...)
Good work

[misterx]

See also #647.

[m4tr1x]

if you convert the bad value with this macro:

#define EXTRACT_16BITS(p) \
                      ((u_int16_t)((u_int16_t)*((const u_int8_t *)(p) + 1) << 8 | \
                      (u_int16_t)*((const u_int8_t *)(p) + 0)))

the result is a valid 802.11b/g channel

[someone]

It might be in osdep/byteorder.h:

#define ___my_swab16(x)

[frankwoelk@…]

Example hidden essid channel 158 (avm router)

[misterx]

That's a known issue, I have been able to replicate it and I have a capture file to replicate it.

Duplicate, see tickets #689, #714 and #535

[frankwoelk@…]

Example hidden essid channel 133 (avm router again)

[frankwoelk@…]

Netgear-Router this time: BSSID, First time seen, Last time seen, channel, Speed, Privacy, Cipher, Authentication, Power, # beacons, # IV, LAN IP, ID-length, ESSID, Key

00:09:5B:C7:99:88, 2010-04-28 22:03:46, 2010-04-28 22:15:38, 158, -1, , , , -1, 0, 0, 0. 0. 0. 0, 0, ,

Station MAC, First time seen, Last time seen, Power, # packets, BSSID, Probed ESSIDs

00:22:68:B1:58:3C, 2010-04-28 21:47:25, 2010-04-28 22:17:43, -104, 14, 00:09:5B:C7:99:88, NETGEAR

My network driver is ath9k ubuntu 9.10 kernel 2.6.31-20-generic