05-31-2019, 10:21 AM
Hi hashcats.
I have a weird issue with hashcat in combination with mask processor: When piping mp's output into hashcat on my cracking station, hashcat just initializes and then immediately stops with the message "Exhausted". On my local laptop, the same command works without issues, but it's rather slow due to the mobile GPU
I need to use mp, since I want to break a rather weird SHA1 usage: The vendor truncates the entered password at 16 chars and then copies it into a char[16] that gets initialized with NULL bytes. Since this is different from a normal SHA1, I wrote a rule that mimics the behavior. And since the password is probably just some random letters and digits, and none of my (rather huge) wordlists yielded any results, I have to use a mask/bruteforce attack.
Unfortunately, hashcat doesn't allow combining mask attacks with rules files.
Anyways, here is the used command and output:
The cracking station is running Ubuntu 16.04.6 LTS with latest updates applied and uses the NVIDIA driver 418.67 with Cuda 10.1.
As mentioned before: On a Windows 10 laptop with GeForce MX150 the same command works without issues
I have a weird issue with hashcat in combination with mask processor: When piping mp's output into hashcat on my cracking station, hashcat just initializes and then immediately stops with the message "Exhausted". On my local laptop, the same command works without issues, but it's rather slow due to the mobile GPU
I need to use mp, since I want to break a rather weird SHA1 usage: The vendor truncates the entered password at 16 chars and then copies it into a char[16] that gets initialized with NULL bytes. Since this is different from a normal SHA1, I wrote a rule that mimics the behavior. And since the password is probably just some random letters and digits, and none of my (rather huge) wordlists yielded any results, I have to use a mask/bruteforce attack.
Unfortunately, hashcat doesn't allow combining mask attacks with rules files.
Anyways, here is the used command and output:
Code:
$ mp64 -i 1:8 ?a?a?a?a?a?a?a?a | hashcat -O -m 100 --status --status-timer 30 --stdin-timeout-abort 60 uart_sha1.txt -r pad_null-16.rule
hashcat (v5.1.0-1118-gede3ac9) starting...
CUDA API (CUDA 10.1)
====================
* Device #1: GeForce GTX 1080 Ti, 11178 MB, 28MCU
* Device #2: GeForce GTX 1080 Ti, 11178 MB, 28MCU
* Device #3: GeForce GTX 1070, 8119 MB, 15MCU
* Device #4: GeForce GTX 1070, 8119 MB, 15MCU
OpenCL API (OpenCL 1.2 CUDA 10.1.152) - Platform #1 [NVIDIA Corporation]
========================================================================
* Device #5: GeForce GTX 1080 Ti, skipped
* Device #6: GeForce GTX 1080 Ti, skipped
* Device #7: GeForce GTX 1070, skipped
* Device #8: GeForce GTX 1070, skipped
OpenCL API (OpenCL 2.0 ) - Platform #2 [Intel(R) Corporation]
=============================================================
* Device #9: Intel(R) Xeon(R) CPU E5-2609 v4 @ 1.70GHz, skipped
Hashes: 1 digests; 1 unique digests, 1 unique salts
Bitmaps: 16 bits, 65536 entries, 0x0000ffff mask, 262144 bytes, 5/13 rotates
Rules: 1
Applicable optimizers:
* Optimized-Kernel
* Zero-Byte
* Precompute-Init
* Early-Skip
* Not-Salted
* Not-Iterated
* Single-Hash
* Single-Salt
* Raw-Hash
Minimum password length supported by kernel: 0
Maximum password length supported by kernel: 31
Watchdog: Temperature abort trigger set to 90c
Host memory required for this attack: 4675 MB
Starting attack in stdin mode...
Session..........: hashcat
Status...........: Exhausted
Hash.Name........: SHA1
Hash.Target......: 554beec588aa530c6723ffedb0e34a8778b1b6dd
Time.Started.....: Fri May 31 09:57:12 2019 (1 sec)
Time.Estimated...: Fri May 31 09:57:13 2019 (0 secs)
Guess.Base.......: Pipe
Guess.Mod........: Rules (pad_null-16.rule)
Speed.#1.........: 0 H/s (0.00ms) @ Accel:128 Loops:1 Thr:1024 Vec:1
Speed.#2.........: 0 H/s (0.00ms) @ Accel:128 Loops:1 Thr:1024 Vec:1
Speed.#3.........: 0 H/s (0.00ms) @ Accel:256 Loops:1 Thr:1024 Vec:1
Speed.#4.........: 0 H/s (0.00ms) @ Accel:256 Loops:1 Thr:1024 Vec:1
Speed.#*.........: 0 H/s
Recovered........: 0/1 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.........: 0
Rejected.........: 0
Restore.Point....: 0
Restore.Sub.#1...: Salt:0 Amplifier:0-0 Iteration:0-1
Restore.Sub.#2...: Salt:0 Amplifier:0-0 Iteration:0-1
Restore.Sub.#3...: Salt:0 Amplifier:0-0 Iteration:0-1
Restore.Sub.#4...: Salt:0 Amplifier:0-0 Iteration:0-1
Candidates.#1....: [Copying]
Candidates.#2....: [Copying]
Candidates.#3....: [Copying]
Candidates.#4....: [Copying]
Hardware.Mon.#1..: Temp: 48c Fan: 29% Util: 41% Core:1518MHz Mem:5005MHz Bus:16
Hardware.Mon.#2..: Temp: 57c Fan: 20% Util: 0% Core:1632MHz Mem:5005MHz Bus:16
Hardware.Mon.#3..: Temp: 40c Fan: 32% Util: 0% Core:1582MHz Mem:3802MHz Bus:16
Hardware.Mon.#4..: Temp: 36c Fan: 33% Util: 0% Core:1582MHz Mem:3802MHz Bus:16
Started: Fri May 31 09:56:59 2019
Stopped: Fri May 31 09:57:14 2019The cracking station is running Ubuntu 16.04.6 LTS with latest updates applied and uses the NVIDIA driver 418.67 with Cuda 10.1.
As mentioned before: On a Windows 10 laptop with GeForce MX150 the same command works without issues