Pico2024 C3 - Detailed Analysis
Reverse engineering a custom encryption algorithm written in python that encodes characters based on the difference between ... picoCTF 2024 capture the flag competition: Uses a printf format string vulnerability to change the GOT.PLT entry for puts to point to system instead. from pwn import * r ... This is a use-after-free vulnerability. If we free the variable and then do a malloc of the same size (rounded to the next multiple of 4 ... Uses sha256sum to compute a hash of each file in a directory. grep is used to search for a particular file. Backticks `` are used to ... Artificially injected cross-site scripting vulnerability (XSS) in a website. Was able to get around the policy by using an experimental ...
Used git checkout to checkout 3 different branches of a git repository. Combining those 3 files gives us the flag! Was able to write past the end of a heap variable to change the value of another heap variable. Uses robots.txt to find the uploads folder and upload a PHP webshell ... The Picoclicks have become my favorite project. And now - the masterpiece of them is finally born! This video is sponsored by ... Two different heap allocated variables are stored next to each other in memory. By writing past the end of one, we are able to ... We are able to encode and decode arbitrary RSA messages EXCEPT the one we want (password.enc, which we'll call m). So we ...
malloc allocates blocks of memory contiguously and sequentially.
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