This is the third challenge in the Rust Fixme series. The comments in this challenge are:
// Did you know you have to do "unsafe" operations in Rust?
As we can imagine, this introduces the use of Rust’s “unsafe” for operations that directly manipulate pointers. Let’s move on to the next phase.
🎯 Solution Path
Exploitation Steps
Exploitation
The first thing I did was uncomment the unsafe block, as it needs to be uncommented to execute it. Then, inside the unsafe block, I kept the code that manipulates raw pointers and created a slice using std::slice::from_raw_parts to get the content of the decrypted buffer. After running the program, I obtained the flag.
🛠️ Exploitation Process
Approach
Since I’ve already explained the fixes made, I’ll just leave the file with the modifications here:
