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HackThisSite : Basics [1- 9 ] | Challenges made by Real hackers


1 to 6 in the above playlist 🔝

 challenge 6 — decryption code : https://github.com/AdithyakrishnaV/Python-for-Penetration-Testing/blob/master/decrypt.py

#hackthissite basic full-section playlist

BASIC 7

  • cal command is the key
  • After a lot of searches, I found this https://www.linuxquestions.org/questions/general-10/unix-cal-command-in-an-odd-situation-370968/
  • The website has set up a script that returns the output from the UNIX cal command. So in the input box, I could type ‘2005’ and hit enter, and it would run the cal command and that year, then return the output on the webpage to view that calendar
  • There is a file (which I don't know the name of) in that dir where the cal command is executed, what would be a possible way to enter something in that text box to find out what the name of it is?
  • Just “ ls ” or “ls -la ” wouldn't work
  • [ cal 2001, cal -y, cal -j ] : this is what happens when we type a year or a flag like “-y” (cal) so type:

2022; ls

  • and it worked
  • Completed

BASIC 8

Server-Side Includes (SSI) Injection:

SSIs are directives present on Web applications used to feed an HTML page with dynamic contents

SSI my detailed medium post:

SSI (Server Side Include)and SSI Injection

SSI (Server Side Includes) are placed in HTML pages to add dynamically generated content to an existing HTML page.SSIs…

medium.com

Hi, au12ha39vc.php index.php level8.php tmp! Your name contains 39 characters.

BASIC 9

Level 9 has no input field and all the levels ara in the same directory so:

come back to level 8 :

<! — #exec cmd=”ls ../../9" →

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