hashcat Forum › Support › hashcat v
Low Hashrate

Threaded Mode
Low Hashrate
mkfox Offline
Junior Member
**
Posts: 10
Threads: 2
Joined: Nov 2019
#1
11-10-2019, 05:13 PM
I have an RTX 2080 and the benchmark/actual hashrate are quite different. I get a benchmark of 2500 mhz but only 1700 mhz on NTLMV2.

Ive tried everything but I cant get it past 1750 mhz.
Find
Reply
philsmd Offline
I'm phil
******
Posts: 2,267
Threads: 16
Joined: Feb 2013
#2
11-10-2019, 05:21 PM
are you talking about hashes per second H/s , because Hz is something completely differnt (core clock, frequency for instance).

speed depends a lot on the attack mode and sometimes even how many hashes you have (single vs multiple etc)... there are several optimizatons built-in in hashcat.

You should probably test with -w 4 -O and a -a 3 with a huge keyspace, e.g. ?b?b?b?b?b?b?b?b
Find
Reply
mkfox Offline
Junior Member
**
Posts: 10
Threads: 2
Joined: Nov 2019
#3
11-10-2019, 05:26 PM (This post was last modified: 11-10-2019, 05:26 PM by mkfox.)
I am talking in H/s

sudo hashcat -a3 -w4 -m 5600 -O ~/Desktop/scott.txt ?u?a?a?a?a?a?a?s

and I get this as an output. 1750 mh/s almost half the benchmark speed.

Session..........: hashcat
Status...........: Running
Hash.Type........: NetNTLMv2
Hash.Target......: ADMINISTRATOR:TongueROF:637c7285050ac6a3:5b7d72e6da1309...000000
Time.Started.....: Sun Nov 10 11:02:21 2019 (6 secs)
Time.Estimated...: Thu Nov 14 14:25:15 2019 (4 days, 3 hours)
Guess.Mask.......: ?u?a?a?a?a?a?a?s [8]
Guess.Queue......: 1/1 (100.00%)
Speed.#1.........: 1762.9 MH/s (424.98ms) @ Accel:256 Loops:256 Thr:256 Vec:1
Recovered........: 0/1 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.........: 10533208064/630708842156250 (0.00%)
Rejected.........: 0/10533208064 (0.00%)
Restore.Point....: 3014656/255347709375 (0.00%)
Restore.Sub.#1...: Salt:0 Amplifier:1024-1280 Iteration:0-256
Candidates.#1....: RGd#Q# -> JQY&#'
Hardware.Mon.#1..: Temp: 42c Fan: 29% Util:100% Core:2010MHz Mem:6800MHz Bus:4
Find
Reply
undeath Offline
Sneaky Bastard
******
Posts: 2,301
Threads: 11
Joined: Jul 2010
#4
11-10-2019, 05:27 PM
you didn't use -O in that example
Find
Reply
mkfox Offline
Junior Member
**
Posts: 10
Threads: 2
Joined: Nov 2019
#5
11-10-2019, 05:28 PM
(11-10-2019, 05:27 PM)undeath Wrote: you didn't use -O in that example


I added it in, It doesn't change the hashrate at all.
Find
Reply
undeath Offline
Sneaky Bastard
******
Posts: 2,301
Threads: 11
Joined: Jul 2010
#6
11-10-2019, 05:29 PM
your mask is not ideal. Try ?b?b?b?b?b?b?b?b as suggested by philsmd
Find
Reply
mkfox Offline
Junior Member
**
Posts: 10
Threads: 2
Joined: Nov 2019
#7
11-10-2019, 05:32 PM
(11-10-2019, 05:29 PM)undeath Wrote: your mask is not ideal. Try ?b?b?b?b?b?b?b?b as suggested by philsmd

When I try sudo hashcat -a3 -w4 -m 5600 -O ~/Desktop/scott.txt ?b?b?b?b?b?b?b?b

I am now getting a "Integer overflow detected in keyspace of mask: ?b?b?b?b?b?b?b?b" and the process stops.
Find
Reply
royce Offline
Moderator à la mode
******
Posts: 930
Threads: 4
Joined: Jan 2015
#8
11-10-2019, 05:33 PM
Drop one or two ?b and try again
~
Find
Reply
mkfox Offline
Junior Member
**
Posts: 10
Threads: 2
Joined: Nov 2019
#9
11-10-2019, 05:36 PM
(11-10-2019, 05:33 PM)royce Wrote: Drop one or two ?b and try again

I dropped a ?b and the hashrate stays at 1700 mh/s
Find
Reply
undeath Offline
Sneaky Bastard
******
Posts: 2,301
Threads: 11
Joined: Jul 2010
#10
11-10-2019, 05:37 PM
that's interesting. can you try with -w3?
Find
Reply