protocon 1.4.0

Protocon is a socket-centric framework for rapidly prototyping connections through simple send and receive transcripts.

Protocon is a socket-centric framework for rapidly prototyping connections through simple send and receive commands. Think socat with pretty hex output and more send / receive automation control.

Installing

Protocon requires Python 3.4+ and can be installed via pip using the command python3 -m pip install protocon.

Example Usage

Manual Mode

Starting Protocon requires a target_url argument which describes the type of socket to open and the endpoint to connect to. Protocon will then switch to an interactive console where various commands are available to send and receive data.

user@localhost:~$ ./protocon tcp://github.com:22
[*] Loaded 4 connection drivers
[+] Initialized protocon engine v1.0 at 2017-12-22 08:13:09
[+] Connected to: tcp://github.com:22
pro > # this is a comment
pro > # next we're going to receive all the data we can read in 1 second
pro > recv_time 1
[*] RX:     22 bytes (CRC: 0xd533)
0000  53 53 48 2d 32 2e 30 2d  6c 69 62 73 73 68 5f 30   SSH-2.0-libssh_0
0010  2e 37 2e 30 0d 0a                                  .7.0..
pro > exit

Trans(script) Mode

When starting Protocon, one or more resource files containing commands can be specified and will be executed in sequence.

user@localhost:~$ ./protocon udp://8.8.8.8:53 examples/dns_query.txt
[*] Loaded 4 connection drivers
[+] Initialized protocon engine v1.0 at 2017-12-22 08:26:28
[+] Connected to: udp://8.8.8.8:53
encoding - was: utf-8
now: hex
[*] TX:     55 bytes (CRC: 0xa139)
0000  37 49 01 20 00 01 00 00  00 00 00 01 03 77 77 77   7I. .........www
0010  06 67 6f 6f 67 6c 65 03  63 6f 6d 00 00 01 00 01   .google.com.....
0020  00 00 29 10 00 00 00 00  00 00 0c 00 0a 00 08 4e   ..)............N
0030  c1 3b 36 79 86 a5 d5                               .;6y...
[*] RX:     59 bytes (CRC: 0x5210)
0000  37 49 81 80 00 01 00 01  00 00 00 01 03 77 77 77   7I...........www
0010  06 67 6f 6f 67 6c 65 03  63 6f 6d 00 00 01 00 01   .google.com.....
0020  c0 0c 00 01 00 01 00 00  00 57 00 04 ac d9 06 e4   .........W......
0030  00 00 29 02 00 00 00 00  00 00 00                  ..)........
[*] The connection has been closed

For more examples of resource files, see the examples directory.

target_url Examples

ether://eth0/?type=0x86dd&src=00:0c:29:84:05:fd&dst=33:33:00:00:00:01
null:
serial:///dev/ttyUSB0?baudrate=9600&bytesize=8&parity=N&stopbits=1
ssl://1.2.3.4:123
ssl4://5.6.7.8:567
ssl6://[fe80::800:27ff:fe00:10]:4444/?ip6-scope-id=eth0
tcp://1.2.3.4:123
tcp4://0.0.0.0:123/?type=server
tcp6://[fe80::800:27ff:fe00:10]:4444/?ip6-scope-id=eth0
udp://1.2.3.4:123
udp4://1.2.3.4:123/?size=8192

Data Expansion

Data passed by the user (such as the parameter to the send and recv_until commands) will be expanded using a basic escape sequence. Additionally these sequences can be escaped by being prefixed with \.

Sequence	Description
\\	Literal backslash
\n	New line
\r	Carrige return
\t	Tab
\x00	Literal byte 0x00
${var}	Variable named var

Variables

The expansion supports variables inserted with ${var}. The following variables are defined automatically.

Variable Name	Description
url.host	The host portion of the URL
url.password	The password portion of the URL
url.port	The port portion of the URL
url.scheme	The scheme portion of the URL
url.username	The username portion of the URL

Credits

• Spencer McIntyre - zeroSteiner (@zeroSteiner)