gchq/CyberChef

Operation request: PCAP parser

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#260 opened on Mar 23, 2018

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 (3 comments) (0 reactions) (0 assignees)JavaScript (34,843 stars) (3,944 forks)batch import
help wantedoperation

Description

Summary

Now that CyberChef can handle large files, it would be useful to create an operation that can parse PCAPs. This operation would not include full stack protocol parsing, just the ability to separate out individual packets and perhaps specify which packets to display. Ideally it would support both .pcap and .pcap-ng formats.

Contributor guide

Tech stack
javascript
Domain
data
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Understanding of PCAP file formatFamiliarity with CyberChef operation API
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
First, review existing CyberChef operations in the 'operations' directory to understand the pattern for adding new operations. Then research the PCAP and PCAP NG file formats (e.g., Wireshark's libpcap documentation). The issue mentions no full protocol parsing, but focus on packet extraction. Consider using a library like pcap parser or implementing a minimal parser. Check the comments on the issue (#260) for any additional clarification.
Operation request: PCAP parser · gchq/CyberChef#260 | Good First Issue