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Web hacking

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Prashant Vashisht
Prashant Vashisht

The document discusses how a web browser can be used as a tool for hacking and reconnaissance by searching for sensitive information exposed online, such as administrative interfaces, documents containing private details, and vulnerabilities in web applications. It provides examples of searches that have uncovered passwords, internal files, and personal data, and warns that aggregation of online data poses serious privacy risks. The document aims to demonstrate how easy and powerful a web browser can be for gathering intelligence about targets.

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Web Hacking KSAJ Inc. www.PENETRATIONTEST.com
HaX0rz Toolkit Complicated ¡®sploits that need a Bachelor¡¯s degree to understand and use Scripts in various languages and syntaxes like C, PERL, gtk and bash Automated scanning tools like nmap and nessus A web browser
A Web Browser? Web surfing: ? Is easy to do, ? Is Operating System independent, ? Doesn¡¯t require intimate knowledge of ¡°the system¡±, ? Provides access to vast amounts of data and information, ? and topped off with all kinds of data mining tools
Web Features Reverse phone number searches Detailed address topological maps Satellite photography of target area Resumes Phone and Email lists Likely targets described in detail Exploit information easy to obtain Data aggregation makes it more serious
What We¡¯ll Learn Methods of Reconnaissance The level of sensitive detail companies and organizations leave exposed to the Internet The level of detail about specific people on the Internet The effect of data aggregation on privacy
Where to start? Search Engines are one of the first things people learn to use on the Internet Most use highly effective search algorithms to mine the Internet Most provide equally advanced search abilities to the user
allintitle:¡±Index of /admin¡±
Web hacking
? Here is a Google hit from MIT, pulled from the cache
? allintitle:¡±Index of /¡± site:mil
Web hacking
Web hacking
Web hacking
Web hacking
Web hacking
Web hacking
Sometimes it works when broken From an allintitle:¡±Index of /admin¡± search Admin account had been patched But the error information was pretty interesting, too¡­ ? Within the full page error report was: Full paths to libraries /home/faraway/opt/cancat/lib /usr/local/share/perl/5.6.1/Apache/ASP.pm /usr/local/lib/perl/5.6.1/DBD/mysql.pm
Search Engines allintitle:¡±Index of /¡± site:gov site:mil site:ztarget.com filetype:doc filetype:pdf filetype:xls [cached] [view as html] intitle:, inurl:, allinurl: Filetypes include: pdf, ps, wk[12345], wki, wks, wku, lwp, mw, xls, ppt, doc, wps, wdb, wri, rtf, ans and txt
Other Interesting Searches Far too many password files to bother counting anymore Access and error logs from a hotel chain ? Included booking information and how long customers were staying ? Some very well-known people had their full vacation schedules made available to the public Military ¡°Procedures and Practices¡±
Other Interesting Searches allintitle:¡±Index of /¡± +confidential filetype:doc ? A regulatory matters postal letter to an executive at a telecommunications commission, which contained competitor and specific revenue information, and made the following declaration: The release of such information on the public record would allow current and potential competitors to develop more effective business and marketing strategies¡­
Other Interesting Searches Searches for WS_FTP.LOG give a rather detailed list of files that are updated regularly, and often provides internal network IP information normally hidden from the Internet Name, job title, phone number, and email address of mailroom staff at major military sites Inter-department electronic funds transfers
Other Interesting Searches robots.txt files tell search engines ¡°don¡¯t look here¡± World-readable and in a known location so the search engines will find it easily, and ignore confidential or private directories What do you find when you do look in those directories?
Other Interesting Searches Passive scanning for vulnerable targets Where to find targets: ? Search for phrases commonly found on web-based application interfaces (and especially their error messages) ? Sites like http://www.securityfocus.com ¨C provide information that can be used to create search criteria
Web hacking
Web hacking
Web hacking
Web hacking
Unreported Vulnerabilities Many vulnerabilities go unreported and unfixed, despite how obvious they are Example: ? HAMWeather is a weather software package that allows websites to provide accurate weather information. Geared towards news sites. ? Does not require authentication for any of its administrative processes ? Lets search for that administrative program¡­
Web hacking
Web hacking
Web hacking
Web hacking
Web hacking
Web hacking
More Web Hacking Search engines are a treasure trove of information We¡¯ve looked at general web search engines, but let¡¯s now look at more information specific sites ? Administrative web servers ? Reconnaissance from the sky ? Proxies
Administrative Web Servers Many devices come with web servers enabled by default: ? Printers ? Routers and Switches ? Wireless Access Points
Printers on the Web? Netcraft provides an ongoing tally of web servers operating on the Internet. Can we find web based administration?
Web hacking
Agranat-EmWeb
Several sites seem to have left this particular printer wide open
Web hacking
Web hacking
Web hacking
Web hacking
Reconnaissance We¡¯ve seen a glimpse of various back doors available to web browsers Let¡¯s turn the tables now, and talk much closer to home How much personal detail do we put online for all to see?
Reconaissance Web surfing habits Cookies Resumes Web site histories (www.archive.org) News group posts Friends Relatives School archives Maps
Web hacking
Web hacking
Web hacking
Web hacking
Web hacking
Web hacking
Web hacking
Web hacking
Final Thoughts We have shown a few ways that a web browser can be used to gather huge amounts of target information, and a few ways the web browser can be used to exploit trivial vulnerabilities There are many more online services like the ones pointed out in this presentation It is easy to collect and analyze this information to produce thorough profiles
Thank You Karsten Johansson KSAJ Inc. www.PENETRATIONTEST.com

More Related Content

Web hacking

  • 1. Web Hacking KSAJ Inc. www.PENETRATIONTEST.com
  • 2. HaX0rz Toolkit Complicated ¡®sploits that need a Bachelor¡¯s degree to understand and use Scripts in various languages and syntaxes like C, PERL, gtk and bash Automated scanning tools like nmap and nessus A web browser
  • 3. A Web Browser? Web surfing: ? Is easy to do, ? Is Operating System independent, ? Doesn¡¯t require intimate knowledge of ¡°the system¡±, ? Provides access to vast amounts of data and information, ? and topped off with all kinds of data mining tools
  • 4. Web Features Reverse phone number searches Detailed address topological maps Satellite photography of target area Resumes Phone and Email lists Likely targets described in detail Exploit information easy to obtain Data aggregation makes it more serious
  • 5. What We¡¯ll Learn Methods of Reconnaissance The level of sensitive detail companies and organizations leave exposed to the Internet The level of detail about specific people on the Internet The effect of data aggregation on privacy
  • 6. Where to start? Search Engines are one of the first things people learn to use on the Internet Most use highly effective search algorithms to mine the Internet Most provide equally advanced search abilities to the user
  • 9. ? Here is a Google hit from MIT, pulled from the cache
  • 10. ? allintitle:¡±Index of /¡± site:mil
  • 17. Sometimes it works when broken From an allintitle:¡±Index of /admin¡± search Admin account had been patched But the error information was pretty interesting, too¡­ ? Within the full page error report was: Full paths to libraries /home/faraway/opt/cancat/lib /usr/local/share/perl/5.6.1/Apache/ASP.pm /usr/local/lib/perl/5.6.1/DBD/mysql.pm
  • 18. Search Engines allintitle:¡±Index of /¡± site:gov site:mil site:ztarget.com filetype:doc filetype:pdf filetype:xls [cached] [view as html] intitle:, inurl:, allinurl: Filetypes include: pdf, ps, wk[12345], wki, wks, wku, lwp, mw, xls, ppt, doc, wps, wdb, wri, rtf, ans and txt
  • 19. Other Interesting Searches Far too many password files to bother counting anymore Access and error logs from a hotel chain ? Included booking information and how long customers were staying ? Some very well-known people had their full vacation schedules made available to the public Military ¡°Procedures and Practices¡±
  • 20. Other Interesting Searches allintitle:¡±Index of /¡± +confidential filetype:doc ? A regulatory matters postal letter to an executive at a telecommunications commission, which contained competitor and specific revenue information, and made the following declaration: The release of such information on the public record would allow current and potential competitors to develop more effective business and marketing strategies¡­
  • 21. Other Interesting Searches Searches for WS_FTP.LOG give a rather detailed list of files that are updated regularly, and often provides internal network IP information normally hidden from the Internet Name, job title, phone number, and email address of mailroom staff at major military sites Inter-department electronic funds transfers
  • 22. Other Interesting Searches robots.txt files tell search engines ¡°don¡¯t look here¡± World-readable and in a known location so the search engines will find it easily, and ignore confidential or private directories What do you find when you do look in those directories?
  • 23. Other Interesting Searches Passive scanning for vulnerable targets Where to find targets: ? Search for phrases commonly found on web-based application interfaces (and especially their error messages) ? Sites like http://www.securityfocus.com ¨C provide information that can be used to create search criteria
  • 28. Unreported Vulnerabilities Many vulnerabilities go unreported and unfixed, despite how obvious they are Example: ? HAMWeather is a weather software package that allows websites to provide accurate weather information. Geared towards news sites. ? Does not require authentication for any of its administrative processes ? Lets search for that administrative program¡­
  • 35. More Web Hacking Search engines are a treasure trove of information We¡¯ve looked at general web search engines, but let¡¯s now look at more information specific sites ? Administrative web servers ? Reconnaissance from the sky ? Proxies
  • 36. Administrative Web Servers Many devices come with web servers enabled by default: ? Printers ? Routers and Switches ? Wireless Access Points
  • 37. Printers on the Web? Netcraft provides an ongoing tally of web servers operating on the Internet. Can we find web based administration?
  • 40. Several sites seem to have left this particular printer wide open
  • 45. Reconnaissance We¡¯ve seen a glimpse of various back doors available to web browsers Let¡¯s turn the tables now, and talk much closer to home How much personal detail do we put online for all to see?
  • 46. Reconaissance Web surfing habits Cookies Resumes Web site histories (www.archive.org) News group posts Friends Relatives School archives Maps
  • 55. Final Thoughts We have shown a few ways that a web browser can be used to gather huge amounts of target information, and a few ways the web browser can be used to exploit trivial vulnerabilities There are many more online services like the ones pointed out in this presentation It is easy to collect and analyze this information to produce thorough profiles
  • 56. Thank You Karsten Johansson KSAJ Inc. www.PENETRATIONTEST.com