New attack on WPA/WPA2 using PMKID

[ZerBea]

That's interesting:
You received 4 PMKIDs for a single network (I assume that it isn't an ENTERPRISE network). So there must be 4 clients.
How is the commandline for hcxdumptool?

A hashfile should look like this:
PMKID*MAC_AP*MAC_STA:ESSID (hex)

If you have 4 PMKIDs:
PMKID*MAC_AP*MAC_STA1:ESSID (hex)
PMKID*MAC_AP*MAC_STA2:ESSID (hex)
PMKID*MAC_AP*MAC_STA3:ESSID (hex)
PMKID*MAC_AP*MAC_STA4:ESSID (hex)

MAC_AP (your BSSID) and ESSID should be the same.