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CyberChef is a simple, intuitive web app for carrying out all manner of "cyber" operations within a web browser. These operations include simple encoding like XOR and Base64, more complex encryption like AES, DES and Blowfish, creating binary and hexdumps, compression and decompression of data, calculating hashes and checksums, IPv6 and X.509 parsing, changing character encodings, and much more.
The tool is designed to enable both technical and non-technical analysts to manipulate data in complex ways without having to deal with complex tools or algorithms. It was conceived, designed, built and incrementally improved by an analyst in their 10% innovation time over several years.
CyberChef is still under active development. As a result, it shouldn't be considered a finished product. There is still testing and bug fixing to do, new features to be added and additional documentation to write. Please contribute!
Cryptographic operations in CyberChef should not be relied upon to provide security in any situation. No guarantee is offered for their correctness.
A live demo can be found here - have fun!
If you would like to try out CyberChef locally you can either build it yourself:
FreshRSS docker build --tag cyberchef --ulimit nofile=10000 .
docker run -it -p 8080:80 cyberchef
Or you can use our image directly:
docker run -it -p 8080:80 ghcr.io/gchq/cyberchef:latest
This image is built and published through our GitHub Workflows
There are four main areas in CyberChef:
You can use as many operations as you like in simple or complex ways. Some examples are as follows:
By manipulating CyberChef's URL hash, you can change the initial settings with which the page opens. The format is https://gchq.github.io/CyberChef/#recipe=Operation()&input=...
Supported arguments are recipe, input (encoded in Base64), and theme.
CyberChef is built to support
CyberChef is built to fully support Node.js v16. For more information, see the "Node API" wiki page
Contributing a new operation to CyberChef is super easy! The quickstart script will walk you through the process. If you can write basic JavaScript, you can write a CyberChef operation.
An installation walkthrough, how-to guides for adding new operations and themes, descriptions of the repository structure, available data types and coding conventions can all be found in the "Contributing" wiki page.
A .NET malware loader, using API-Hashing and dynamic invoking to evade static analysis
NixImports uses my managed API-Hashing implementation HInvoke, to dynamically resolve most of it's called functions at runtime. To resolve the functions HInvoke requires two hashes the typeHash and the methodHash. These hashes represent the type name and the methods FullName, on runtime HInvoke parses the entire mscorlib to find the matching type and method. Due to this process, HInvoke does not leave any import references to the methods called trough it.
Another interesting feature of NixImports is that it avoids calling known methods as much as possible, whenever applicable NixImports uses internal methods instead of their wrappers. By using internal methods only we can evade basic hooks and monitoring employed by some security tools.
For a more detailed explanation checkout my blog post.
You can generate hashes for HInvoke using this tool
NixImports only requires a filepath to the .NET binary you want to pack with it.
NixImports.exe <filepath>
It will automatically generate a new executable called Loader.exe in it's root folder. The loader executable will contain your encoded payload and the stub code required to run it.
If youre interested in detection engineering and possible detection of NixImports, checkout the last section of my blog post
Or click here for a basic yara rule covering NixImports.
This is a command-line tool written in Python that applies one or more transmutation rules to a given password or a list of passwords read from one or more files. The tool can be used to generate transformed passwords for security testing or research purposes. Also, while you doing pentesting it will be very useful tool for you to brute force the passwords!!
How Passmute can also help to secure our passwords more?
PassMute can help to generate strong and complex passwords by applying different transformation rules to the input password. However, password security also depends on other factors such as the length of the password, randomness, and avoiding common phrases or patterns.
The transformation rules include:
reverse: reverses the password string
uppercase: converts the password to uppercase letters
lowercase: converts the password to lowercase letters
swapcase: swaps the case of each letter in the password
capitalize: capitalizes the first letter of the password
leet: replaces some letters in the password with their leet equivalents
strip: removes all whitespace characters from the password
The tool can also write the transformed passwords to an output file and run the transformation process in parallel using multiple threads.
Installation
git clone https://HITH-Hackerinthehouse/PassMute.git
cd PassMute
chmod +x PassMute.py
Usage To use the tool, you need to have Python 3 installed on your system. Then, you can run the tool from the command line using the following options:
python PassMute.py [-h] [-f FILE [FILE ...]] -r RULES [RULES ...] [-v] [-p PASSWORD] [-o OUTPUT] [-t THREAD_TIMEOUT] [--max-threads MAX_THREADS]
Here's a brief explanation of the available options:
-h or --help: shows the help message and exits
-f (FILE) [FILE ...], --file (FILE) [FILE ...]: one or more files to read passwords from
-r (RULES) [RULES ...] or --rules (RULES) [RULES ...]: one or more transformation rules to apply
-v or --verbose: prints verbose output for each password transformation
-p (PASSWORD) or --password (PASSWORD): transforms a single password
-o (OUTPUT) or --output (OUTPUT): output file to save the transformed passwords
-t (THREAD_TIMEOUT) or --thread-timeout (THREAD_TIMEOUT): timeout for threads to complete (in seconds)
--max-threads (MAX_THREADS): maximum number of threads to run simultaneously (default: 10)
NOTE: If you are getting any error regarding argparse module then simply install the module by following command: pip install argparse
Examples
Here are some example commands those read passwords from a file, applies two transformation rules, and saves the transformed passwords to an output file:
Single Password transmutation: python PassMute.py -p HITHHack3r -r leet reverse swapcase -v -t 50
Multiple Password transmutation: python PassMute.py -f testwordlists.txt -r leet reverse -v -t 100 -o testupdatelists.txt
Here Verbose and Thread are recommended to use in case you're transmutating big files and also it depends upon your microprocessor as well, it's not required every time to use threads and verbose mode.
Legal Disclaimer:
You might be super excited to use this tool, we too. But here we need to confirm! Hackerinthehouse, any contributor of this project and Github won't be responsible for any actions made by you. This tool is made for security research and educational purposes only. It is the end user's responsibility to obey all applicable local, state and federal laws.
