We are given with a **gzip** compressed file called `psst.tar.gz`.
Decompress it with `gzip -d psst.tar.gz` and it gives a **tar archive** called `psst.tar`.
Run `tar -xf psst.tar` and it gives a directory `chall`.
In it, there is another *directory* and a *file* which contains a character.
 What we have to do is go to a directory, collect a character from a file and go to another directory and collect another character.  Here is a *python script* to do that  ```python# solve.py# Save the script in 'chall' directory and run it
import os
# There is only one directory in chall# So go to itos.chdir("Security")
# loop until there is only one filewhile True:	# list the directory and store results in items	items = os.listdir()
	for item in items:    	# if the item is directory, set next directory to it		if os.path.isdir(item):			next_dir = item      # if the item is a file, read it and print the content		else:			with open(item, 'r') as file:				print(file.read().strip(), end='')  # end='' to not to print new line
	# if there is only one item ( which means only one file ) break the loop	if len(items) == 1:		break
	# change to next directory	os.chdir(next_dir)
print("")```
Run it and it will print out the flag
```$ python3 solve.pyBSNoida{d1d_y0u_u53_b45h_5cr1pt1ng_6f7220737461636b6f766572666c6f773f}```
*flag*: `BSNoida{d1d_y0u_u53_b45h_5cr1pt1ng_6f7220737461636b6f766572666c6f773f}`