I haven't seem a bot using dns covert channel, so i've tried to create one.
client poorly written in assembly 32 bits and server poorly written in perl. given a list of public domains extracted from http://freedns.afraid.org/ the bot tries to contact his master and after a very simple challenge (xor/sub/add) the master can ask for system version, submit files, and code execution (maximum of 399 bytes) - with only dns packets. to test it, need to create a subdomain at freedns.afraid and a machine listening on port 53 to where the server answer requests. http://fosforo.sytes.net/FoFuS_PoC_bot_beta2.tar.gz []s -- ---------------------------------------------------------------------------- Fósforo Blog: http://insanenetworks.blogspot.com ---------------------------------------------------------------------------- Bcz sex is like hacking.. you get in, you get out, and you hope you didn't leave something behind that can be traced back to you.. ---------------------------------------------------------------------------- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/