Cerastes/index.html at main · aaron-iz/Cerastes · GitHub

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />

        <link rel="preconnect" href="https://fonts.googleapis.com" />
        <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
        <link
            href="https://fonts.googleapis.com/css2?family=Orbitron:wght@400..900&display=swap"
            rel="stylesheet"
        />
        <link
            rel="stylesheet"
            href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.13.1/font/bootstrap-icons.min.css"
        />

        <title>Cerastes</title>

        <style>
            * {
                box-sizing: border-box;
                font-family: "Orbitron", sans-serif;
            }

            body {
                background-color: black;
                color: #00ff00;

                display: flex;
                flex-direction: column;
                align-items: center;

                gap: 1rem;
            }

            body,
            h1 {
                margin: 0;
                padding: 0;
            }

            h1 {
                font-size: 3rem;
            }

            textarea,
            input {
                font-family: "Courier New", Courier, monospace;
                background-color: #333;
                border: 1px solid #00ff00;
                width: 700px;
            }

            a,
            textarea,
            input,
            #output {
                color: #00ff00;
            }

            textarea {
                height: 300px;
            }

            input {
                padding: 10px;
                border-radius: 5px;
            }

            form {
                text-align: center;
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 0.75rem;
            }

            button {
                padding: 10px 20px;
                background-color: #00ff00;
                color: black;
                border: none;
                border-radius: 5px;
                cursor: pointer;
            }

            button:hover {
                background-color: #fff;
            }

            p {
                max-width: 700px;
                text-align: center;
            }

            span {
                display: flex;
                gap: 1rem;
            }

            a {
                text-decoration: none;
                font-size: 2rem;
            }

            a:hover {
                color: #fff;
            }
        </style>
    </head>

    <body>
        <form id="obfuscationForm">
            <h1>Cerastes</h1>

            <span>
                <a
                    href="https://github.com/aaron-iz/Cerastes/tree/main"
                    title="Source Code"
                >
                    <i class="bi bi-github"></i>
                </a>

                <a
                    href="https://buymeacoffee.com/aaroniz"
                    title="Buy me a coffee"
                >
                    <i class="bi bi-cup-hot"></i>
                </a>
            </span>

            <p>
                <b>Cerastes</b> is a genus of small vipers, often hiding by
                burying themselves in the sand. These are ambush predators that
                lie buried in the sand, waiting for prey to pass by.
                <br />
                This tool generates an obfuscated version of your code using
                simple XOR-based encryption. If you're using JavaScript, you can
                also use the generated injection snippet below. It dynamically
                inserts the encrypted code into the DOM at runtime.
            </p>

            <textarea
                id="code"
                rows="20"
                cols="80"
                placeholder="alert('Boo! 👻')"
            ></textarea>

            <button id="obfuscate">Obfuscate</button>
        </form>

        <div id="output">
            <h2>-Your output will be down here-</h2>
        </div>

        <script>
            const EncryptedPlaceholder = "DDD";
            const KeyPlaceholder = "KKK";
            const Template = `const d=${EncryptedPlaceholder};const k=${KeyPlaceholder};const s=document.createElement("script");const y=d.map((v,i)=>String.fromCharCode(v^k.charCodeAt(i%k.length))).join("");const z=new TextDecoder("utf-8").decode(Uint8Array.from(y,(c)=>c.charCodeAt(0)));s.innerHTML=z;document.body.appendChild(s);`;
            const codeElement = document.getElementById("code");

            function generateKey(length) {
                let key = "";
                while (key.length < length) {
                    key += Math.random().toString(36).substring(2, 15);
                }
                return key.substring(0, length);
            }

            function encrypt(bytes, key) {
                return bytes.map((byte, index) => byte ^ key.charCodeAt(index));
            }

            function createMiniHeading(text) {
                const h = document.createElement("h3");
                h.textContent = text;
                return h;
            }

            function addElements(encrypted, key) {
                const outputElement = document.getElementById("output");
                outputElement.replaceChildren();

                const keyElement = document.createElement("input");
                keyElement.type = "text";
                keyElement.value = key;
                keyElement.id = "key";
                keyElement.disabled = true;
                keyElement.title = "Click to copy the key";
                keyElement.onclick = function () {
                    this.select();
                    document.execCommand("copy");
                    alert("Key copied to clipboard!");
                };

                const encryptedElement = document.createElement("textarea");
                encryptedElement.id = "encrypted";
                encryptedElement.rows = 20;
                encryptedElement.cols = 80;
                encryptedElement.value = encrypted;
                encryptedElement.disabled = true;
                encryptedElement.title = "Click to copy the encrypted code";
                encryptedElement.onclick = function () {
                    this.select();
                    document.execCommand("copy");
                    alert("Encrypted code copied to clipboard!");
                };

                const scriptCode = Template.replace(
                    EncryptedPlaceholder,
                    JSON.stringify(encrypted).substring(
                        1,
                        JSON.stringify(encrypted).length - 1
                    )
                ).replace(KeyPlaceholder, JSON.stringify(key));

                const scriptElement = document.createElement("textarea");
                scriptElement.id = "scriptCode";
                scriptElement.rows = 20;
                scriptElement.cols = 80;
                scriptElement.value = scriptCode;
                scriptElement.disabled = true;
                scriptElement.title = "Click to copy the script code";
                scriptElement.onclick = function () {
                    this.select();
                    document.execCommand("copy");
                    alert("Script code copied to clipboard!");
                };

                outputElement.appendChild(createMiniHeading("Key:"));
                outputElement.appendChild(keyElement);
                outputElement.appendChild(createMiniHeading("Encrypted Code:"));
                outputElement.appendChild(encryptedElement);
                outputElement.appendChild(
                    createMiniHeading("JS Injecting Code:")
                );
                outputElement.appendChild(scriptElement);
            }

            function obfuscate(e) {
                e.preventDefault();

                const code = codeElement.value;
                if (!code || code.trim() === "") {
                    alert("Please enter some code to obfuscate.");
                    return;
                }

                const encode = new TextEncoder().encode(code);
                const key = generateKey(encode.length);
                const encrypted = JSON.stringify([...encrypt(encode, key)]);

                addElements(encrypted, key);
            }

            document
                .getElementById("obfuscationForm")
                .addEventListener("submit", obfuscate);
        </script>
    </body>
</html>