├── README.md └── sibil.sh /README.md: -------------------------------------------------------------------------------- 1 | 2 | "dMMMb dMP dMMMMb dM" 3 | dMP" VP amr dMP'dMP dMP 4 | "MMMb dMP dMMMMK dM" 5 | dP .dMP dMP dMP.aMF dMP 6 | "MMMP' dMP dMMMMP' dMMMMM" 7 | Shodan IP Block List (SIBL) v0.2 8 | 9 | - whoisbyip.com - 10 | 11 | Requirements:
12 | Shodan CLI - https://cli.shodan.io/
13 | The current list of IPs used by shodan *Optional 14 | 15 | Inteded Use: 16 | Used to generate a list of IPs used by shodan that scan hosts. The script will start a tcpdump session that will listen for new VNC connections, after starting the dump it will initate a scan request to shodan.io logging the IP address that attempts to connect. 17 | 18 | Isnt blocking shodan sticking your head in the sand? 19 | Yes, it is if you are exposing equipment to the internet it will be vulnerable blocking shodan does not fix this. However you would not let users run nmap on the inside of your network so why would you let them do it to the outside. Below is a nifty diagaram of how shodan is used by its userbase: 20 | 
21 |        /\
22 |       /__\ < Actual Infosec
23 |      /    \ 
24 |     /      \
25 |    /        \
26 |   /  ABUSE   \ 
27 |  /            \
28 | /______________\
29 |
30 | For this reason I find it would be useful to keep a up to date list of IP addresses or scanners that shodan is using. Plus it is interesting to do. 31 | 32 | You just said blocking shodan wont fix my equipment so why would I bother logging IPs? 33 | Since the script logs only the IP address that comes from a user iniated scan, you are only blocking the IP addresses that would be used from other users from manually scanning your network using the shodan cli. For a complete list of all IPs see the bottom question. 34 | 35 | How can you gaurentee these are shodan IP addresses? 36 | Easy shodan wont let you use shodan to check one of its own IPs, the search will either censor out the IP like this: 37 | xxx.xxx.xxx.xxx or show you a custom 404 page when you attempt to access the scanner. This tool also uses the host utility to check the dns name of the IP address. The tcpdump is set to run for only 60 seconds and the longest a shodan scan usually takes is 10 seconds. While I have gotten false IPs in my tcpdump they all resolved to chineese scanners looking for open VNC sessions. 38 | 39 | Do you have a block list of shodan IPs? 40 | Yes they are hosted at romcheckfail.com/URL and whoisbyip.com/URL 41 | 42 | 43 | -------------------------------------------------------------------------------- /sibil.sh: -------------------------------------------------------------------------------- 1 | # 2 | # "dMMMb dMP dMMMMb dM" 3 | # dMP" VP amr dMP'dMP dMP 4 | # "MMMb dMP dMMMMK dM" 5 | # dP .dMP dMP dMP.aMF dMP 6 | # "MMMP' dMP dMMMMP' dMMMMM" 7 | # Shodan IP Block List v0.2 8 | # 9 | # - whoisbyip.com - 10 | 11 | #Gather your current IP from shodan so you can sanatize the file 12 | #Scan IP may differ depending on if you are running on the same host or not 13 | wanip=$(shodan myip) 14 | echo External IP is: $wanip 15 | #Start a TCP dump for 60 seconds and then start the shodan scan on the host 16 | timeout 60 /usr/sbin/tcpdump -ni any port 5901 >> tcpdump.txt & 17 | #Start the shodan scan 18 | sleep 10 ; /usr/local/bin/shodan scan submit $wanip >> shodanlogs.txt 19 | date +"%d-%m-%y %T" >> shodanlogs.txt 20 | wait 21 | #Get all the IP addresses out of the generated log 22 | grep -Eo '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' tcpdump.txt >> newips.txt 23 | #Remove the localhost IP addresses 24 | sed '/'$wanip'/d' newips.txt >> ShodanIPsOnly.txt 25 | tail ShodanIPsOnly.txt >> ShodanIPOnly.lst 26 | #Get the DNS address for those hosts in the file 27 | cat ShodanIPsOnly.txt | xargs -I % bash -c 'echo "%:$(host %)"' >> DNSlist.txt 28 | #Clean up the DNS list a little 29 | grep -Eo ' pointer .*' DNSlist.txt >> DNStrimmed.txt 30 | #Export into a somwhat formatted list 31 | paste -d '' ShodanIPsOnly.txt DNStrimmed.txt >> final.txt 32 | #Replace the word ' pointer ' with a comma , trim the trailing period 33 | sed -i 's/ pointer /\,/g' final.txt 34 | sed 's/.$//' final.txt >> ShodanIPList.txt 35 | #Remove duplicates from the list of servers 36 | sort ShodanIPList.txt | uniq >> ShodanList.lst 37 | #Make a IP Block or Drop list 38 | sort ShodanIPsOnly.txt | uniq >> IPDropList.lst 39 | #Clean up all the worker files leaving just the .lst 40 | rm *.txt --------------------------------------------------------------------------------