need a script to check a url (add random numbers and check which one works)

i need a script that i can start ,and it will check this [login to view URL] and where is "ADD-RANDOM-HERE" to add 27 numbers and letters here it will be good if it try multi combination so if number is wrong it will give u this message "{"category_list":[]}" if script find correct combination it will give u lof of text