2025-03-09

'hashcat' program, running on ~/s which is a set of modern /etc/passwd (/etc/shadow) password hashes. 

Example of invocation and output.

$ ./hashcat ~/s /usr/share/dict/words -r rules/dive.rule -O -S -w3 

i.e. command fileofhashes wordlist -r rulesfile [+options it said to add to speed it up] 



hashcat (v6.2.6) starting in autodetect mode

CUDA API (CUDA 12.1)
====================
* Device #1: NVIDIA A40, 45203/45466 MB, 84MCU

OpenCL API (OpenCL 3.0 CUDA 12.1.68) - Platform #1 [NVIDIA Corporation]
=======================================================================
* Device #2: NVIDIA A40, skipped

Hash-mode was not specified with -m. Attempting to auto-detect hash mode.
The following mode was auto-detected as the only one matching your input hash:

1800 | sha512crypt $6$, SHA512 (Unix) | Operating System

NOTE: Auto-detect is best effort. The correct hash-mode is NOT guaranteed!
Do NOT report auto-detect issues unless you are certain of the hash type.

Minimum password length supported by kernel: 0
Maximum password length supported by kernel: 15

Hashes: 71 digests; 71 unique digests, 71 unique salts
Bitmaps: 16 bits, 65536 entries, 0x0000ffff mask, 262144 bytes, 5/13 rotates
Rules: 99086

Optimizers applied:
* Optimized-Kernel
* Zero-Byte
* Uses-64-Bit

Watchdog: Temperature abort trigger set to 90c

Host memory required for this attack: 872 MB

Dictionary cache hit:
* Filename..: /usr/share/dict/words
* Passwords.: 479826
* Bytes.....: 4953598
* Keyspace..: 47544039036

[s]tatus [p]ause [b]ypass [c]heckpoint [f]inish [q]uit => s

Session..........: hashcat
Status...........: Running
Hash.Mode........: 1800 (sha512crypt $6$, SHA512 (Unix))
Hash.Target......: /home/nt/s
Time.Started.....: Mon Mar 10 01:25:00 2025 (11 secs)
Time.Estimated...: Sat Jun 21 02:18:26 2025 (102 days, 23 hours)
Kernel.Feature...: Optimized Kernel
Guess.Base.......: File (/usr/share/dict/words)
Guess.Mod........: Rules (rules/dive.rule)
Guess.Queue......: 1/1 (100.00%)
Speed.#1.........:   379.3 kH/s (67.64ms) @ Accel:4096 Loops:1024 Thr:32 Vec:1
Recovered........: 0/71 (0.00%) Digests (total), 0/71 (0.00%) Digests (new), 0/71 (0.00%) Salts
Progress.........: 4115032/3375626771556 (0.00%)
Rejected.........: 91945/4115032 (2.23%)
Restore.Point....: 0/47544039036 (0.00%)
Restore.Sub.#1...: Salt:31 Amplifier:0-1 Iteration:3072-4096
Candidate.Engine.: Host Generator + PCIe
Candidates.#1....: 1080 -> 10-pointtp
Hardware.Mon.#1..: Temp: 63c Fan:  0% Util: 99% Core:1575MHz Mem:7250MHz Bus:16