# Level08

Using ghidra, we can decompile the code and see that it does a backup of a file that we passed as a parameter (roughly).
However, there are a few protections.
First, the program `open()` our argument file (here, we want `/home/users/level09/.pass`.
Since the binary has the permission for user `level09`, we can `open()` this file.
The string `"./backups"` is concatenated to the filepath we pass as a parameter. It will then `open(..., OCREAT ...)` the file that we passed in `av[1]` and write the contents of the original file to this newly created file.
However, since the path will have `"./backups"` at the beginning and we want to get the content of `/home/users/level09/.pass`, we need to recreate this file tree in the `/tmp` directory.

Here is the process:
```
level08@OverRide:/tmp$ mkdir -p backups/home/users/level09  
level08@OverRide:/tmp$ ~/level08 /home/users/level09/.pass
level08@OverRide:/tmp$ cat backups/home/users/level09/.pass 
fjAwpJNs2vvkFLRebEvAQ2hFZ4uQBWfHRsP62d8S
```
