Maximum password length supported by kernel: 63 Minimum password length supported by kernel: 8 Hashes: 1 digests 1 unique digests, 1 unique saltsīitmaps: 16 bits, 65536 entries, 0x0000ffff mask, 262144 bytes, 5/13 rotates -U retrieve usernames from WiFi-traffic.-I retrieve identities from WiFi-traffic.-E retrieve possible passwords from WiFi-traffic (additional, this list will include ESSIDs).Note: While not required it is recommended to use options -E -I and -U with hcxpcaptool.
The columns are the following (all hex encoded): The content of the written file will look like this: Network type.: DLT_IEEE802_11_RADIO (127)Įndianess.: little endian hcxpcaptool -z test.16800 test.pcapngįile name.: test.pcapngįile type.: pcapng 1.0įile os information.: Linux 4.17.11-arch1įile application information.: hcxdumptool 4.2.0 Run hcxpcaptool to convert the captured data from pcapng format to a hash format accepted by hashcat. We recommend running hcxdumptool up to 10 minutes before aborting.Ģ. Note: Based on the noise on the wifi channel it can take some time to recieve the PMKID. If an AP recieves our association request packet and supports sending PMKID we will see a message "FOUND PMKID" after a moment: Quote: start capturing (stop with ctrl+c) hcxdumptool -o test.pcapng -i wlp39s0f3u4u5 -enable_status
The PMKID is computed by using HMAC-SHA1 where the key is the PMK and the data part is the concatenation of a fixed string label "PMK Name", the access point's MAC address and the station's MAC address. One of the RSN capabilities is the PMKID. The RSN IE is an optional field that can be found in 802.11 management frames.
The new attack is performed on the RSN IE (Robust Security Network Information Element) of a single EAPOL frame.Īt this time, we do not know for which vendors or for how many routers this technique will work, but we think it will work against all 802.11i/p/q/r networks with roaming functions enabled (most modern routers).
The main difference from existing attacks is that in this attack, capture of a full EAPOL 4-way handshake is not required. WPA3 will be much harder to attack because of its modern key establishment protocol called "Simultaneous Authentication of Equals" (SAE). This attack was discovered accidentally while looking for new ways to attack the new WPA3 security standard. In order to make use of this new attack you need the following tools:
In this writeup, I'll describe a new technique to crack WPA PSK (Pre-Shared Key) passwords.