CyberChef

Compile time: 10/02/2017 16:36:52 UTC

Licenced under the Apache Licence, Version 2.0.

What sort of things can I do with CyberChef?

There are well over 100 operations in CyberChef allowing you to carry simple and complex tasks easily. Here are some examples:

Can I load input directly from files?

Yes! Just drag your file over the input box and drop it. The contents of the file will be converted into hexadecimal and the 'From Hex' operation will be added to the beginning of the recipe (if it's not already there). This is so that special characters like carriage returns aren't removed by your browser.

Please note that loading large files is likely to cause a crash. There's not a lot that can be done about this - browsers just aren't very good at handling and displaying large amounts of data.

How do I run operation X over multiple inputs at once?

Maybe you have 10 timestamps that you want to parse or 16 encoded strings that all have the same key.

The 'Fork' operation (found in the 'Flow control' category) splits up the input line by line and runs all subsequent operations on each line separately. Each output is then displayed on a separate line. These delimiters can be changed, so if your inputs are separated by commas, you can change the split delimiter to a comma instead.

Click here for an example.

If you find a bug in CyberChef, please raise an issue in our GitHub repository explaining it in as much detail as possible. Copy and include the following information if relevant.

Raise issue on GitHub

If you're a nerd like me, you might find statistics really fun! Here's some about the CyberChef code base:

212	source files
115641	lines
4.3M	size

142	JavaScript source files
106451	lines
3.8M	size

83	third party JavaScript source files
86258	lines
3.0M	size

59	first party JavaScript source files
20193	lines
752K	size

3.5M	uncompressed JavaScript size
1.9M	compressed JavaScript size

15	categories
172	operations

What

A simple, intuitive web app for analysing and decoding data without having to deal with complex tools or programming languages. CyberChef encourages both technical and non-technical people to explore data formats, encryption and compression.

Why

Digital data comes in all shapes, sizes and formats in the modern world – CyberChef helps to make sense of this data all on one easy-to-use platform.

How

The interface is designed with simplicity at its heart. Complex techniques are now as trivial as drag-and-drop. Simple functions can be combined to build up a "recipe", potentially resulting in complex analysis, which can be shared with other users and used with their input.

For those comfortable writing code, CyberChef is a quick and efficient way to prototype solutions to a problem which can then be scripted once proven to work.

Who

It is expected that CyberChef will be useful for cybersecurity and antivirus companies. It should also appeal to the academic world and any individuals or companies involved in the analysis of digital data, be that software developers, analysts, mathematicians or casual puzzle solvers.

Aim

It is hoped that by releasing CyberChef through GitHub, contributions can be added which can be rolled out into future versions of the tool.

There are around 150 useful operations in CyberChef for anyone working on anything vaguely Internet-related, whether you just want to convert a timestamp to a different format, decompress gzipped data, create a SHA3 hash, or parse an X.509 certificate to find out who issued it.

It’s the Cyber Swiss Army Knife.