CyberChef - The Cyber Swiss Army Knife

[Arthur]

A really nice webapp for converting things from GCHQ.

 

Website / Download (Right-click > Save As) / Source Code

 

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:

 

• Decode a Base64-encoded string
  
• Convert a date and time to a different time zone
  
• Parse a Teredo IPv6 address
  
• Convert data from a hexdump, then decompress
  
• Display multiple timestamps as full dates
  
• Carry out different operations on data of different types
  

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.

 

CyberChef is entirely client-side

It should be noted that none of your input or recipe configuration is ever sent to the CyberChef web server - all processing is carried out within your browser, on your own computer.

 

Due to this feature, CyberChef can be compiled into a single HTML file. You can download this file and drop it into a virtual machine, share it with other people, or use it independently on your desktop.