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Python interface into mercury's network protocol fingerprinting and analysis functionality
Readme
The goal of the mercury-python
package is to expose mercury's network protocol analysis functionality via python. The cython interface is given in mercury.pyx
.
pip install mercury-python
You will first need to build mercury and install cython and optionally wheel:
pip install cython
pip install wheel
Within mercury's src/cython/
directory, Makefile
will build the package based on the makefile target:
make # default build in-place
make wheel # generates pip-installable wheel file
import mercury
libmerc = mercury.Mercury() # initialization for packet parsing
libmerc = mercury.Mercury(do_analysis=True, resources=b'/<path>/<to>/<resources.tgz>') # initialization for analysis
hex_packet = '5254001235020800273a230d08004500...'
libmerc.get_mercury_json(bytes.fromhex(hex_packet))
{
"fingerprints": {
"tls": "tls/(0303)(13011303...)((0000)...)"
},
"tls": {
"client": {
"version": "0303",
"random": "0d4e266cf66416689ded443b58d2b12bb2f53e8a3207148e3c8f2be2476cbd24",
"session_id": "67b5db473da1b71fbca9ed288052032ee0d5139dcfd6ea78b4436e509703c0e4",
"cipher_suites": "130113031302c02bc02fcca9cca8c02cc030c00ac009c013c014009c009d002f0035000a",
"compression_methods": "00",
"server_name": "content-signature-2.cdn.mozilla.net",
"application_layer_protocol_negotiation": [
"h2",
"http/1.1"
],
"session_ticket": ""
}
},
"src_ip": "10.0.2.15",
"dst_ip": "13.249.64.25",
"protocol": 6,
"src_port": 32972,
"dst_port": 443,
}
There are two methods to invoke mercury's analysis functionality. The first operates on the full hex packet:
libmerc.analyze_packet(bytes.fromhex(hex_packet))
{
"tls": {
"client": {
"server_name": "content-signature-2.cdn.mozilla.net"
}
},
"fingerprint_info": {
"status": "labeled",
"type": "tls",
"str_repr": "tls/1/(0303)(13011303...)[(0000)...]"
},
"analysis": {
"process": "firefox",
"score": 0.9992411956652674,
"malware": false,
"p_malware": 8.626882751003134e-06
}
The second method operates directly on the data features (network protocol fingerprint string and destination context):
libmerc.perform_analysis('tls/1/(0303)(13011303...)[(0000)...]', 'content-signature-2.cdn.mozilla.net', '13.249.64.25', 443)
{
"fingerprint_info": {
"status": "labeled"
},
"analysis": {
"process": "firefox",
"score": 0.9992158715704546,
"malware": false,
"p_malware": 8.745628825189023e-06
}
}
Parsing base64 representations of certificate data:
b64_cert = 'MIIJRDC...'
mercury.parse_cert(b64_cert)
output:
{
"version": "02",
"serial_number": "00eede6560cd35c0af02000000005971b7",
"signature_identifier": {
"algorithm": "sha256WithRSAEncryption"
},
"issuer": [
{
"country_name": "US"
},
{
"organization_name": "Google Trust Services"
},
{
"common_name": "GTS CA 1O1"
}
],
...
Parsing base64 representations of DNS data:
b64_dns = '1e2BgAAB...'
mercury.parse_dns(b64_dns)
output:
{
"response": {
"question": [
{
"name": "live.github.com.",
"type": "AAAA",
"class": "IN"
}
],
...
FAQs
Python interface into mercury's network protocol fingerprinting and analysis functionality
We found that mercury-python demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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