diff --git a/lib/modules/fuzzer/index.js b/lib/modules/fuzzer/index.js
new file mode 100644
index 000000000..23d799f15
--- /dev/null
+++ b/lib/modules/fuzzer/index.js
@@ -0,0 +1,57 @@
+const ethAbi = require('web3-eth-abi');
+const utils = require('web3-utils');
+const _ = require('underscore');
+
+
+// generates random inputs based on the inputs of an ABI
+class ContractFuzzer {
+	constructor(abi) {
+		this.abi = abi;
+	}
+
+	generateFuzz() {
+		this.abi.forEach((abiMethod) => {
+			let inputTypes = abiMethod.inputs.map(input => input.type);
+			let fuzzedInputType = _.reduce(inputTypes, decipherType, 0);
+		})
+	}
+
+	getTypeFuzz(type) {
+		switch() {
+			case 'uintN' || 'intN':
+			
+			case 'bytesN':
+				return generateRandomStaticBytes(size);
+			case 'string' || 'bytes':
+				return generateRandomDynamicType()
+			case 'address':
+				return generateRandomAddress();
+			default:
+		}
+	}
+
+	generateArrayOfType(length, type) {
+		var arr = [];
+		for (var i = 0; i < length; i++) {
+			arr.push(getTypeFuzz(type));
+		}
+		return arr;
+	}
+
+	generateRandomDynamicType() {
+		return Math.random().toString(36).slice(2);
+	}
+
+	generateRandomStaticBytes(size) {
+		return utils.randomHex(size);
+	}
+
+	generateRandomInt(size) {
+    	return utils.hexToNumber(utils.randomHex(size));
+  	}
+
+  	generateRandomAddress() {
+  		return utils.randomHex(20);
+  	}
+
+}
\ No newline at end of file
diff --git a/lib/modules/profiler/gasEstimator.js b/lib/modules/profiler/gasEstimator.js
new file mode 100644
index 000000000..287227b84
--- /dev/null
+++ b/lib/modules/profiler/gasEstimator.js
@@ -0,0 +1,11 @@
+const ethAbi = require('web3-eth-abi');
+const contract = require('web3-eth-contract');
+
+class GasEstimator {
+	constructor(provider, abi, iterations) {
+		this.abi = abi;
+		this.iters = iterations;
+	}
+
+
+}
\ No newline at end of file