Application security overview

Application Security

Asanka Fernandopulle

Senior Software Engineer99X Technology

Dilan Warnakulasooriya

Information Security Engineer99X Technology

04/11/2023 99X Technology(c) 1

Basics of Application Security

• HTTP and HTTPS

• Symmetric key• Asymmetric key• Session key• Analyzing a certificate• Sniffing HTTP and HTTPS• Calomel plugin

04/11/2023 99X Technology(c) 2

Basics of Application Security

• Man in the middle

• Analyzing browser requests• Analyzing server response• https communication

• https and s-http

04/11/2023 99X Technology(c) 3

Basics of Application Security

• What OWASP does

• Builders , Breakers and Defenders

04/11/2023 99X Technology(c) 4

Web Application penetration testing

• Basic web testing methodology

• Vulnerability, Threat and Exploit

• Developer level application security overview

04/11/2023 99X Technology(c) 5

Web Application penetration testing

• Application Security frameworks

• Before development begins• During definition and design• During development• During deployment• Maintenance and operations

04/11/2023 99X Technology(c) 6

Web Application penetration testing

• Web application security review frameworks

• Samurai WTF• Websecurify• Wapiti• Skiffish• Acunetix• Webscarab• W3af

04/11/2023 99X Technology(c) 7

Secure Authentication

• Authentication/Access control methods

04/11/2023 99X Technology(c) 8

Secure Authentication

• Authentication bypass techniques

• Direct page request• Parameter modification• Session ID prediction• Sql injection

Session predictability - webscarab/burpsuite

04/11/2023 99X Technology(c) 9

Secure Authentication

• Bypass authentication matrix

• Basic authentication• Multi-Level login 1• Multi-Level login 2

04/11/2023 99X Technology(c) 10

Secure Authentication

• Password remember

• Password strength• Forgot password

• Browser cache management

04/11/2023 99X Technology(c) 11

Secure Authentication

• Parameter tampering

• Bypass HTML Field restrictions• Exploit hidden fields• Bypass client side JavaScript validation

• Coding controls for Parameter Tampering

04/11/2023 99X Technology(c) 12

Secure Authentication

• Access control flaws

• Using an Access control matrix• Bypass a path based access control scheme• Bypass data layer access control

04/11/2023 99X Technology(c) 13

Injections

• SQL injection classes

• In band• Out of band• Inferential

04/11/2023 99X Technology(c) 14

Injections

• Techniques to exploit sql injections

• Union operator• Boolean• Error based• Out of band• Time delay

04/11/2023 99X Technology(c) 15

Injections

• Standard SQL injection testing

• SELECT * FROM Users WHERE Username='$username' AND Password='$password'

• Numeric sql injection

04/11/2023 99X Technology(c) 16

Injections

• Union Exploitation technique

• Xpath injection• String sql injection

04/11/2023 99X Technology(c) 17

Injections

• Boolean Exploitation technique

• Sql injection : stage 1 : String sql injection

• Stage 3 : Numeric sql injection

04/11/2023 99X Technology(c) 18

Injections

• Error based Exploitation technique

• Modify data with sql injection

• Add data with sql injection

04/11/2023 99X Technology(c) 19

Injections

• Out of band Exploitation technique

04/11/2023 99X Technology(c) 20

Injections

• Time delay Exploitation technique

• Stored procedure Exploitation technique

• Automated Exploitation technique

04/11/2023 99X Technology(c) 21

Injections

• How developers work on SQL injection

• Automate your injection

• sqlmap

04/11/2023 99X Technology(c) 22

Session Management

• Session management techniques

• Session management vulnerability

• insufficient session id length• Session fixation• Session variable overloading

04/11/2023 99X Technology(c) 23

Session Management

• Check your cookies

• Cookie collection• Cookie reverse engineering• Cookie manipulation

• Hijack a session

• Hijack a session• Spoof an authentication cookie• Session fixation

04/11/2023 99X Technology(c) 24

Session Management

• How developers work on session handling

04/11/2023 99X Technology(c) 25

Code Quality

• Code quality breach

• Discover clues in the HTML

04/11/2023 99X Technology(c) 26

Cross Site Scripting

• Scripting types

• Reflected cross site scripting (non-persistent XSS)• Stored cross site scripting (second-order XSS)• DOM based cross site scripting (type 0 xss)

04/11/2023 99X Technology(c) 27

Cross Site Scripting

• Reflected cross site scripting (non-persistent XSS)

• Testing for reflected XSS

• Reflected xss

04/11/2023 99X Technology(c) 28

Cross Site Scripting

• Bypass XSS filters

• Tag Attribute Value • Different syntax or enconding • Bypassing non-recursive filtering

04/11/2023 99X Technology(c) 29

Cross Site Scripting

• Stored cross site scripting (second-order XSS)

• XSS attack scenario

• Stored XSS

04/11/2023 99X Technology(c) 30

Cross Site Scripting

• Testing for Stored cross site scripting

• Input forms • Analyze HTML code• Exploitation framework• File upload

04/11/2023 99X Technology(c) 31

Cross Site Scripting

• How developer handle XSS and CSRF

04/11/2023 99X Technology(c) 32

Testing Tools

• Proxy

• How to write secure programs

04/11/2023 99X Technology(c) 33

Thank you

04/11/2023 99X Technology(c) 34