5 KiB
Cisco SNMP
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Pentesting Cisco Networks
SNMP functions over UDP with ports 161/UDP for general messages and 162/UDP for trap messages. This protocol relies on community strings, serving as passwords that enable communication between SNMP agents and servers. These strings are pivotal for they determine access levels, specifically read-only (RO) or read-write (RW) permissions. A notable attack vector for pentesters is the brute-forcing of community strings, aiming to infiltrate network devices.
A practical tool for executing such brute-force attacks is onesixtyone, which necessitates a list of potential community strings and the IP addresses of the targets:
onesixtyone -c communitystrings -i targets
cisco_config_tftp
The Metasploit framework features the cisco_config_tftp module, facilitating the extraction of device configurations, contingent upon acquiring an RW community string. Essential parameters for this operation include:
- RW community string (COMMUNITY)
- Attacker's IP (LHOST)
- Target device's IP (RHOSTS)
- Destination path for the configuration files (OUTPUTDIR)
Upon configuration, this module enables the download of device settings directly to a specified folder.
snmp_enum
Another Metasploit module, snmp_enum, specializes in gathering detailed hardware information. It operates with either type of community string and requires the target's IP address for successful execution:
msf6 auxiliary(scanner/snmp/snmp_enum) > set COMMUNITY public
msf6 auxiliary(scanner/snmp/snmp_enum) > set RHOSTS 10.10.100.10
msf6 auxiliary(scanner/snmp/snmp_enum) > exploit
References
If you are interested in hacking career and hack the unhackable - we are hiring! (fluent polish written and spoken required).
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Learn AWS hacking from zero to hero with htARTE (HackTricks AWS Red Team Expert)!
- Do you work in a cybersecurity company? Do you want to see your company advertised in HackTricks? or do you want to have access to the latest version of the PEASS or download HackTricks in PDF? Check the SUBSCRIPTION PLANS!
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