📚 Documentation

Mercy is an open-source Rust crate and CLI for building cybersecurity tools, assessment projects, and testing infrastructure. The goal is to create a sustainable project to make creating security tools in Rust a little easier.

Usage

Since Mercy is a standard crate, it can easily be used in any project already initialized with Cargo. Simply add the following line to your Cargo.toml file:

toml mercy = "1.2.21"

Once the Cargo.toml file is updated, you can import the crate and use the provided methods by running cargo run. There are lots of different examples available below.

Cryptographic Processes

Here's a quick example of decoding and encoding using the base64 protocol:

```rust use mercy::{ mercydecode, mercyencode };

fn main() { // Encode string "azazelm3dj3d" mercy_encode("base64", "azazelm3dj3d");

// Decode string "YXphemVsbTNkajNk"
mercy_decode("base64", "YXphemVsbTNkajNk");

} ```

Hexadecimal Dumping

Here's how to dump hexadecimal values in a single line using Mercy:

```rust use mercy::mercy_hex;

fn main() { mercyhex("hexdump", "/Location/of/file"); } ```

Malware/Malicious Detection

You can check if a domain (i.e. azazelm3dj3d.com) is currently classified as malicious using the InQuest API:

```rust use mercy::mercy_malicious;

fn main() { mercy_malicious("status", "azazelm3dj3d.com"); } ```

Miscellaneous Methods

Some extra methods have been included to assist with data collection. You can collect the internal IP address of the host system, defang a URL or IP address, run a WHOIS domain lookup, or dump host system information, specified by the user.

```rust use mercy::mercy_extra;

fn main() { // Contains the internal ip address of the user's system // Second parameter MUST be an empty string to work mercyextra("internalip", "");

// This method is extensive, but the "all" parameter allows the user to dump everything
mercy_extra("system_info", "all");

// Defang an ip address or domain
mercy_extra("defang", "azazelm3dj3d.com");

// Run a WHOIS lookup on a domain
mercy_extra("whois", "azazelm3dj3d.com");

// Attempt to identify an unknown string
mercy_extra("identify", "UCrlEbqe4ppk5dVIHzdxtC7g");

} ```

You can also use the following parameters, replacing the "all" keyword under system_info:

• hostname
• cpu_cores
• cpu_speed
• os_release
• proc

More Info

If ever in doubt, feel free to run this special function to display more information about the crate.

```rust use mercy::source;

fn main() { mercy_source(); } ```

CLI

While Mercy is available as a crate, it also moonlights as a command line interface. This allows you to install the crate as normal via Cargo and use all available methods without building your own assessment tool(s).

You can find a few examples below on how to use the CLI.

You can run the CLI tool using the following syntax: bash mercy -m <METHOD> -p <PROTOCOL> -i <STRING/FILE>

You can also run the help command if you need a refresher on the available arguments: bash mercy -h

The available options are listed below: ``` -i, --input Encoded/Plaintext string for decoding/encoding or location of the file for hex_dump

-m, --method Chosen method for data manipulation (ex: decode)

-p, --protocol Chosen protocol for data manipulation (ex: base64)

-e, --extended View every available option within Mercy ```

Examples

Here are some quick examples of use cases:

If you need to decode a string using the base64 protocol. bash mercy -m decode -p base64 -i <EncodedString>

Print host system information, such as hostname, CPU cores, etc. bash mercy -m sys -p system_info -i all

Take a plaintext string and encode it using an MD5 hash. bash mercy -m hash -p md5 -i <PlaintextString>

Print the internal IP address of your host system. bash mercy -m ip -p internal_ip

Quickly check if a domain is malicious. mercy -m mal -p status -i "azazelm3dj3d.com"

If you're stuck, you can use this option to learn every command at your disposal from Mercy: bash mercy -e