Solved using Brute Force.

package.json

@@ -0,0 +1,23 @@
+{
+  "name": "crypto-examples",
+  "version": "1.0.0",
+  "description": "7 useful examples of the node crypto module.",
+  "main": "index.js",
+  "dependencies": {
+    "reverse-md5": "0.0.5"
+  },
+  "devDependencies": {},
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/fireship-io/node-crypto-examples.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/fireship-io/node-crypto-examples/issues"
+  },
+  "homepage": "https://github.com/fireship-io/node-crypto-examples#readme"
+}

src/hack.js

@@ -5,11 +5,30 @@
 
 const hash = '5e7d28e2cfff93edefb2d15abad07ec5';
 
+const { assert } = require('console');
+var ReverseMd5 = require('reverse-md5')
+
+function hacker(hash) {
+
+    const rev = ReverseMd5({
+        lettersUpper: true,
+        lettersLower: true,
+        numbers: true,
+        special: true,
+        whitespace: true,
+        maxLen: 15
+    })
+    console.log('Here')
+    const obj = rev(hash);
+    return obj.str;
+}
+
 
 // When you figure it out, create a Pull Request on github with value. 
 // First correct PR wins a Lifetime PRO  membership and T-shirt
 
 ///// ANSWER /////
-
 const hacked = 'superhacker';
 
+assert(hacker(hash) === hacked, 'You did not hack the hash!');
+