Password Attacks

SNMP-Brute – Fast SNMP brute force, enumeration, CISCO config downloader and password cracking script

February 1, 2018
2 Min Read

SNMP brute force, enumeration, CISCO config downloader and password cracking script. Listens for any responses to the brute force community strings, effectively minimising wait time.

Requirements

  • metasploit
  • snmpwalk
  • snmpstat
  • john the ripper

Usage

python snmp-brute.py -t [IP]

Options
--help, -h show this help message and exit
--file=DICTIONARY, -f DICTIONARY Dictionary file
--target=IP, -t IP Host IP
--port=PORT, -p PORT SNMP port

Advanced
--rate=RATE, -r RATE Send rate
--timeout=TIMEOUT Wait time for UDP response (in seconds)
--delay=DELAY Wait time after all packets are send (in seconds)
--iplist=LFILE IP list file
--verbose, -v Verbose output

Automation
--bruteonly, -b Do not try to enumerate – only bruteforce
--auto, -a Non Interactive Mode
--no-colours No colour output

Operating Systems
--windows Enumerate Windows OIDs (snmpenum.pl)
--linux Enumerate Linux OIDs (snmpenum.pl)
--cisco Append extra Cisco OIDs (snmpenum.pl)

Alternative Options
--stdin, -s Read communities from stdin
--community=COMMUNITY, -c COMMUNITY Single Community String to use
--sploitego Sploitego’s bruteforce method

Features

  • Brute forces both version 1 and version 2c SNMP community strings
  • Enumerates information for CISCO devices or if specified for Linux and Windows operating systems.
  • Identifies RW community strings
  • Tries to download the router config (metasploit module).
  • If the CISCO config file is downloaded, shows the plaintext passwords (metasploit module) and tries to crack hashed passords with John the Ripper

Credits

  • cisc0wn – github.com/nccgroup/cisco-SNMP-enumeration
  • sploitego project – github.com/allfro/sploitego/blob/master/src/sploitego/scapytools/snmp.py
  • snmpenum.pl script – by Filip Waeytens
  • metasploit – www.metasploit.com

 

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