Upload
To upload a file you need to go to the folder where the file is and ONLY use the file name otherwise you’ll receive a 500 error:
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passive # must be off
binary # to upload binaries, execute this command
put /path/to/file/<file_name> /<new_file_name>
Consider that for windows you may need the relative path.
Download
To download a file use the “get” command, if that doesn’t work user the “binary” flag:
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get <binary> <file_name>
Examples: ECHO CTF martin
Bruteforce
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hydra -L <user_file> -P <pass_file> <IP> ftp
nmap <IP> --script --ftp-brute --script-args userdb=/path/for/users -p 21