package org.owasp.webgoat.lessons;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import org.apache.ecs.Element;
import org.apache.ecs.ElementContainer;
import org.apache.ecs.StringElement;
import org.apache.ecs.html.A;
import org.apache.ecs.html.BR;
import org.apache.ecs.html.Div;
import org.apache.ecs.html.IMG;
import org.apache.ecs.html.Input;
import org.apache.ecs.html.PRE;
import org.apache.ecs.html.TD;
import org.apache.ecs.html.TH;
import org.apache.ecs.html.TR;
import org.apache.ecs.html.Table;
import org.owasp.webgoat.session.DatabaseUtilities;
import org.owasp.webgoat.session.WebSession;
/***************************************************************************************************
*
*
* This file is part of WebGoat, an Open Web Application Security Project utility. For details,
* please see http://www.owasp.org/
*
* Copyright (c) 2002 - 2007 Bruce Mayhew
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with this program; if
* not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Getting Source ==============
*
* Source for this application is maintained at code.google.com, a repository for free software
* projects.
*
* For details, please see http://code.google.com/p/webgoat/
*
* @author Sherif Koussa <a href="http://www.softwaresecured.com">Software Secured</a>
*/
public class BackDoors extends SequentialLessonAdapter
{
private final static Integer DEFAULT_RANKING = new Integer(80);
private final static String USERNAME = "username";
private final static String SELECT_ST = "select userid, password, ssn, salary, email from employee where userid=";
public final static A MAC_LOGO = new A().setHref("http://www.softwaresecured.com").addElement(new IMG("images/logos/softwaresecured.gif").setAlt("Software Secured").setBorder(0).setHspace(0).setVspace(0));
protected Element createContent(WebSession s)
{
return super.createStagedContent(s);
}
protected Element doStage1(WebSession s) throws Exception
{
return concept1(s);
}
protected Element doStage2(WebSession s) throws Exception
{
return concept2(s);
}
private void addDBEntriesToEC(ElementContainer ec, ResultSet rs)
{
try
{
if (rs.next())
{
Table t = new Table(0).setCellSpacing(0).setCellPadding(0).setBorder(1);
TR tr = new TR();
tr.addElement(new TH("User ID"));
tr.addElement(new TH("Password"));
tr.addElement(new TH("SSN"));
tr.addElement(new TH("Salary"));
tr.addElement(new TH("E-Mail"));
t.addElement(tr);
tr = new TR();
tr.addElement(new TD(rs.getString("userid")));
tr.addElement(new TD(rs.getString("password")));
tr.addElement(new TD(rs.getString("ssn")));
tr.addElement(new TD(rs.getString("salary")));
tr.addElement(new TD(rs.getString("email")));
t.addElement(tr);
while (rs.next())
{
tr = new TR();
tr.addElement(new TD(rs.getString("userid")));
tr.addElement(new TD(rs.getString("password")));
tr.addElement(new TD(rs.getString("ssn")));
tr.addElement(new TD(rs.getString("salary")));
tr.addElement(new TD(rs.getString("email")));
t.addElement(tr);
}
ec.addElement(t);
}
} catch (SQLException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
protected Element concept1(WebSession s) throws Exception
{
ElementContainer ec = new ElementContainer();
ec.addElement(makeUsername(s));
try
{
String userInput = s.getParser().getRawParameter(USERNAME, "");
if (!userInput.equals(""))
{
userInput = SELECT_ST + userInput;
String[] arrSQL = userInput.split(";");
Connection conn = DatabaseUtilities.getConnection(s);
Statement statement = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
if (arrSQL.length == 2)
{
statement.executeUpdate(arrSQL[1]);
getLessonTracker(s).setStage(2);
s
.setMessage("You have succeeded in exploiting the vulnerable query and created another SQL statement. Now move to stage 2 to learn how to create a backdoor or a DB worm");
}
ResultSet rs = statement.executeQuery(arrSQL[0]);
addDBEntriesToEC(ec, rs);
}
} catch (Exception ex)
{
ec.addElement(new PRE(ex.getMessage()));
}
return ec;
}
protected Element concept2(WebSession s) throws Exception
{
ElementContainer ec = new ElementContainer();
ec.addElement(makeUsername(s));
String userInput = s.getParser().getRawParameter(USERNAME, "");
if (!userInput.equals(""))
{
userInput = SELECT_ST + userInput;
String[] arrSQL = userInput.split(";");
Connection conn = DatabaseUtilities.getConnection(s);
Statement statement = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
if (arrSQL.length == 2)
{
if (userInput.toUpperCase().indexOf("CREATE TRIGGER") != -1)
{
makeSuccess(s);
}
}
ResultSet rs = statement.executeQuery(arrSQL[0]);
addDBEntriesToEC(ec, rs);
}
return ec;
}
public String getInstructions(WebSession s)
{
String instructions = "";
if (!getLessonTracker(s).getCompleted())
{
switch (getStage(s))
{
case 1:
instructions = "Stage " + getStage(s)
+ ": Use String SQL Injection to execute more than one SQL Statement. ";
instructions = instructions
+ " The first stage of this lesson is to teach you how to use a vulnerable field to create two SQL ";
instructions = instructions
+ " statements. The first is the system's while the second is totally yours.";
instructions = instructions
+ " Your account ID is 101. This page allows you to see your password, ssn and salary.";
instructions = instructions + " Try to inject another update to update salary to something higher";
break;
case 2:
instructions = "Stage " + getStage(s) + ": Use String SQL Injection to inject a backdoor. ";
instructions = instructions
+ " The second stage of this lesson is to teach you how to use a vulneable fields to inject the DB work or the backdoor.";
instructions = instructions
+ " Now try to use the same technique to inject a trigger that would act as ";
instructions = instructions + " SQL backdoor, the syntax of a trigger is: <br>";
instructions = instructions
+ " CREATE TRIGGER myBackDoor BEFORE INSERT ON employee FOR EACH ROW BEGIN UPDATE employee SET email='john@hackme.com'WHERE userid = NEW.userid<br>";
instructions = instructions
+ " Note that nothing will actually be executed because the current underlying DB doesn't support triggers.";
break;
}
}
return instructions;
}
protected Element makeUsername(WebSession s)
{
ElementContainer ec = new ElementContainer();
StringBuffer script = new StringBuffer();
script.append("<STYLE TYPE=\"text/css\"> ");
script.append(".blocklabel { margin-top: 8pt; }");
script.append(".myClass { color:red;");
script.append(" font-weight: bold;");
script.append("padding-left: 1px;");
script.append("padding-right: 1px;");
script.append("background: #DDDDDD;");
script.append("border: thin black solid; }");
script.append("LI { margin-top: 10pt; }");
script.append("</STYLE>");
ec.addElement(new StringElement(script.toString()));
ec.addElement(new StringElement("User ID: "));
Input username = new Input(Input.TEXT, "username", "");
ec.addElement(username);
String userInput = s.getParser().getRawParameter("username", "");
ec.addElement(new BR());
ec.addElement(new BR());
String formattedInput = "<span class='myClass'>" + userInput + "</span>";
ec.addElement(new Div(SELECT_ST + formattedInput));
Input b = new Input();
b.setName("Submit");
b.setType(Input.SUBMIT);
b.setValue("Submit");
ec.addElement(new PRE(b));
return ec;
}
public Element getCredits()
{
return super.getCustomCredits("Created by Sherif Koussa ", MAC_LOGO);
}
protected List<String> getHints(WebSession s)
{
List<String> hints = new ArrayList<String>();
hints.add("Your user id is 101. Use it to see your information");
hints.add("A semi-colon usually ends a SQL statement and starts a new one.");
hints.add("Try this 101 or 1=1; update employee set salary=100000");
hints.add("For stage 2, Try 101; CREATE TRIGGER myBackDoor BEFORE INSERT ON "
+ "employee FOR EACH ROW BEGIN UPDATE employee SET email='john@hackme.com' WHERE userid = NEW.userid");
return hints;
}
protected Category getDefaultCategory()
{
return Category.INJECTION;
}
protected Integer getDefaultRanking()
{
return DEFAULT_RANKING;
}
public String getTitle()
{
return ("Database Backdoors ");
}
}