Metasploit攻击Oracle的环境搭建(Failed to load the OCI library: no such file to load -- oci8)

Metasploit中关于Oracle的攻击模块默认并不完全，需要自己做一些工作。本文主要记录在搭建环境的中的一些错误（操作系统Backtrack 5）。在默认情况下使用oracle的一些攻击功能会出现类似如下错误：

msf > use auxiliary/admin/oracle/oracle_login 
msf  auxiliary(oracle_login) > set RHOST 192.168.0.91
RHOST => 192.168.0.91
msf  auxiliary(oracle_login) > run

[-] Failed to load the OCI library: no such file to load -- oci8
[-] See http://www.metasploit.com/redmine/projects/framework/wiki/OracleUsage for installation instructions
[*] Auxiliary module execution completed

 安装Oracle Instant Clinet

下载basic, sqlplus,和SDK:http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html, 将三个压缩包解压到同一个目录下并创建一个libclntsh.so -> libclntsh.so.11.1的链接。

>unzip /opt/oracle/instantclient-basic-linux32-11.2.0.2.0.zip
>unzip /opt/oracle/instantclient-sqlplus-linux32-11.2.0.2.0.zip
>unzip /opt/oracle/instantclient-sdk-linux32-11.2.0.2.0.zip
>ln -s libclntsh.so.11.1 libclntsh.so

目录里的内容大概如下：

root@bt:/opt/oracle/instantclient_11_2# ls
adrci         libclntsh.so       libociei.so      ojdbc5.jar  SQLPLUS_README
BASIC_README  libclntsh.so.11.1  libocijdbc11.so  ojdbc6.jar  uidrvci
genezi        libnnz11.so        libsqlplusic.so  sdk         xstreams.jar
glogin.sql    libocci.so.11.1    libsqlplus.so    sqlplus

然后执行vi ~/.bashrc 在文件的最后添加环境变量如下：

export PATH=$PATH:/opt/oracle/instantclient_11_2
export SQLPATH=/opt/oracle/instantclient_11_2
export TNS_ADMIN=/opt/oracle/instantclient_11_2
export LD_LIBRARY_PATH=/opt/oracle/instantclient_11_2
export ORACLE_HOME=/opt/oracle/instantclient_11_2

确认Oracle Instant Client是否安装成功

root@bt:~# sqlplus scott/tiger@//192.168.0.91/ORCL

SQL*Plus: Release 11.2.0.2.0 Production on Fri Sep 23 04:39:08 2011

Copyright (c) 1982, 2010, Oracle.  All rights reserved.


Connected to:
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options

SQL> 

安装OCI8

下载链接：http://ruby-oci8.rubyforge.org/en/，解压后进入解压后的目录，运行make 和 make install。在运行这两个命令之前，先用env命令看看前面设置的环境变量是否生效了，如果没有生效，前面sqlplus也是运行不起来的，这时重新启动一下电脑就可以了。前面做的步骤可以参考http://dev.metasploit.com/redmine/projects/1/wiki/OracleUsage。

安装完成后需要验证一下OCI8是否安装成功，我用的这个版本出现如下问题。

root@bt:~# irb
irb(main):001:0> require 'oci8'
LoadError: no such file to load -- oci8lib_191
	from /usr/local/lib/site_ruby/1.9.2/oci8.rb:40:in `require'
	from /usr/local/lib/site_ruby/1.9.2/oci8.rb:40:in `<top (required)>'
	from (irb):1:in `require'
	from (irb):1
	from /usr/bin/irb:12:in `<main>'

因为我的ruby版本是1.9.2，安装的时候生成的是oci8lib_192，所以需要改一个oci8.rb这个文件

root@bt:/usr/local/lib/site_ruby/1.9.2# vi oci8.rb

多加一个when, 让其使用oci8lib_192这个库

# The suffix number indicates the ruby API version.
#  18  - ruby 1.8.x
#  191 - ruby 1.9.1 and 1.9.2
#  19x - ruby 1.9.x future version which will break the API compatibility
case RUBY_VERSION
when /^1\.9\.1/
  so_basename += '191'
when /^1\.9\.2/
  so_basename += '192'
when /^1\.8/
  so_basename += '18'
else
  raise 'unsupported ruby version: ' + RUBY_VERSION
end
require so_basename

这时我们再来确认一下，出现下面类似的信息就可以了。

irb(main):002:0> require 'oci8'
Warning: NLS_LANG is not set. fallback to US-ASCII.
=> true

在backtrack5 R1上，msf这时还是会出现

[-] Failed to load the OCI library: no such file to load -- oci8

这是因为metasploit的环境变量中没有包含我们安装的OCI8的缘故，可以在metasploit执行如下命令确认一下

msf  auxiliary(oracle_login) > ruby -r rbconfig -e "puts Config::CONFIG['sitelibdir']"
[*] exec: ruby -r rbconfig -e "puts Config::CONFIG['sitelibdir']"

/opt/framework/ruby/lib/ruby/site_ruby/1.9.1

msf  auxiliary(oracle_login) > env | grep RUBYLIB
[*] exec: env | grep RUBYLIB

RUBYLIB=/opt/framework/ruby/lib:/opt/framework/ruby/lib/ruby:/opt/framework/ruby/lib/ruby/1.9.1:/opt/framework/ruby/lib/ruby/1.9.1/i686-linux:/opt/framework/ruby/lib/ruby/site_ruby:/opt/framework/ruby/lib/ruby/site_ruby/1.9.1:/opt/framework/ruby/lib/ruby/site_ruby/1.9.1/i686-linux

在/opt/framework3/scripts/setenv.sh的 RUBLIB中加入你安装的OCI8所在的目录。

:/usr/local/lib/site_ruby/1.9.2:/usr/local/lib/site_ruby/1.9.2/i486-linux

重新启动msfconsole

msf > use auxiliary/admin/oracle/oracle_login 
msf  auxiliary(oracle_login) > set RHOST 192.168.0.91
RHOST => 192.168.0.91
msf  auxiliary(oracle_login) > run

[*] Starting brute force on 192.168.0.91:1521...
[*] Found user/pass of: scott/tiger on 192.168.0.91 with sid ORCL
[*] Auxiliary module execution completed