Kali Linux Oracle Support

EDIT This guide has been updated to accomodate a few changes (see here)

Recently I have had to get Oracle support sorted in my Kali Linux install. I will try not to rant about the reasons why it doesn’t just work out of the box and just get the steps written down quickly. Typically, when you try to use a module such as oracle_login, metasploit may error out with:

msf auxiliary(oracle_login) > run

[-] Failed to load the OCI library: cannot load such file -- oci8
[-] See http://www.metasploit.com/redmine/projects/framework/wiki/OracleUsage for installation instructions
[*] Auxiliary module execution completed
msf auxiliary(oracle_login) > run

The link provided seems a little out of date, so here is an updated guide.

getting started

First, if you dont have an account at oracle.com, you will unfortunately need one here. If you don’t want to create one, don’t worry, a temp email works as well as you luckily don’t have to confirm ownership of it before you can download.

sorting oracle first

Anyways. Create yourself a directory /opt/oracle and cd there. In a browser, navigate to the instant client downloads url and choose your architecture. If you hate 32bit Kali, choose Linux x86, and 64bit Kali choose Linux x86-64.

Next, download the following packages and save them to /opt/oracle:

With those downloaded, extract the archives with the unzip command. This should leave you with a directory /opt/oracle/instantclient_12_1/. This is all the files needed to at least get the sqlplus client going. However, when we build the ruby stuff needed for Metasploit, we will need to hax a .so. Do this with:

root@kali:/opt/oracle/instantclient_12_1# ln libclntsh.so.12.1 libclntsh.so

root@kali:/opt/oracle/instantclient_12_1# ls -lh libclntsh.so
lrwxrwxrwx 1 root root 17 Aug 17 15:37 libclntsh.so -> libclntsh.so.12.1

The last step is to configure the environment so that your shell is… oracle aware. We do this by setting a few environment variables. I have chosen to just append the lines to the end of my .bashrc file

root@kali:/opt/oracle/instantclient_12_1# tail ~/.bashrc

# ORACLE
export PATH=$PATH:/opt/oracle/instantclient_12_1
export SQLPATH=/opt/oracle/instantclient_12_1
export TNS_ADMIN=/opt/oracle/instantclient_12_1
export LD_LIBRARY_PATH=/opt/oracle/instantclient_12_1
export ORACLE_HOME=/opt/oracle/instantclient_12_1

Done! Log out and back and check that these are present in the output of env.

sorting out metasploit

The last thing we need to do is setup the metasploit part. For this we need to download ruby-oci8. In /opt/oracle, download it:

root@kali:/opt/oracle# wget https://github.com/kubo/ruby-oci8/archive/ruby-oci8-2.1.7.zip
[...]
2014-08-17 16:11:31 (42.8 KB/s) - `ruby-oci8-2.1.7.zip' saved [278270]

root@kali:/opt/oracle# unzip ruby-oci8-2.1.7.zip
Archive:  ruby-oci8-2.1.7.zip
fb913e32d8a09bd46e5bf549bd8e554f0870d384
   creating: ruby-oci8-ruby-oci8-2.1.7/
  inflating: ruby-oci8-ruby-oci8-2.1.7/.gitignore
  inflating: ruby-oci8-ruby-oci8-2.1.7/.yardopts
[...]
  inflating: ruby-oci8-ruby-oci8-2.1.7/test/test_rowid.rb
root@kali:/opt/oracle#

Next, move to the extracted directory and install the ruby-dev and libgmp-dev packages if you have not already done so:

root@kali:/opt/oracle# cd ruby-oci8-ruby-oci8-2.1.7/

root@kali:/opt/oracle/ruby-oci8-ruby-oci8-2.1.7# apt-get install ruby-dev libgmp-dev

Next, ensure that the ruby interpreter that you will be use is the same as that of Metasploit with

export PATH=/opt/metasploit/ruby/bin:$PATH

Ensure that you are using the correct version of ruby

# ruby -v
ruby 2.1.6p336 (2015-04-13 revision 50298) [x86_64-linux-gnu]

Lastly, we will make && make install. Logout and back in and test that the oracle tools in metasploit are functional :)

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