apt-get install snmp-mibs-downloader download-mibs
echo "" > /etc/snmp/snmp.conf
root@kali:~# nmap -sU -v --open -p 161 192.168.1.12
Note: SNMP is using UDP not TCP
root@kali:~# echo public > /tmp/community.txt
root@kali:~# echo private >> /tmp/community.txt
root@kali:~# echo manager >> /tmp/community.txt
root@kali:~# echo 192.168.1.12 > /tmp/ip.txt
root@kali:~# onesixtyone -c /tmp/community.txt -i /tmp/ip.txt
root@kali:~# snmpwalk -c puplic -v1 192.168.1.12
snmpcheck -t $ip -c public
snmpwalk -c public -v1 $ip 1|
grep hrSWRunName|cut -d\* \* -f
snmpenum -t $ip
onesixtyone -c names -i hosts
nmap -sV -p 161 --script=snmp-info $ip/24
apt-get install snmp snmp-mibs-downloader
wget https://raw.githubusercontent.com/raesene/TestingScripts/master/snmpv3enum.rb
/usr/share/metasploit-framework/data/wordlists/snmp\_default\_pass.tx
> nmap -sU --open -p 161 192.168.11.200-254 -oG mega-snmp.txt
# -sU :: UDP scan
Alternatively, we can use a tool such as onesixtyone, which will check for given community strings against an IP list, allowing us to brute force various community strings.
> echo public > community
> echo private >> community
> echo manager >> community
> for ip in $(seq 200 254);do echo 192.168.11.$ip;done > ips
> onesixtyone -c community i ips
Once these SNMP services are found, we can start querying them for specific MIB data that might be interesting to us.
We can probe and query SNMP values using a tool such as snmpwalk provided we at least know the SNMP read-only community string, which in most cases is “public”.
Using some of the MIB values provided above, we could attempt to enumerate their corresponding values.
Try out the following examples against a known machine in the labs, which has a Windows SNMP port exposed with the community string “public”.
# Enumerating the Entire MIB Tree
> snmpwalk c public -v1 192.168.11.219
# Enumerating Windows Users:
> snmpwalk -c public -v1 192.168.11.204 1.3.6.1.4.1.77.1.2.25
# Enumerating Running Windows Processes:
> snmpwalk -c public -v1 192.168.11.204 1.3.6.1.2.1.25.4.2.1.2
# Enumerating Open TCP Ports:
> snmpwalk -c public -v1 192.168.11.204 1.3.6.1.2.1.6.13.1.3
# Enumerating Installed Software:
> snmpwalk -c public v1 192.168.11.204 1.3.6.1.2.1.25.6.3.1.2
try to Use snmpwalk and snmpcheck to gather information about the discovered targets.
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