From 2fe7889912c9bb340f302a037585b7b1836ac94f Mon Sep 17 00:00:00 2001 From: Andrea Fioraldi Date: Mon, 3 Feb 2020 13:11:10 +0100 Subject: move custom and pythoon mutators examples into examples/ --- python_mutators/simple-chunk-replace.py | 59 --------------------------------- 1 file changed, 59 deletions(-) delete mode 100644 python_mutators/simple-chunk-replace.py (limited to 'python_mutators/simple-chunk-replace.py') diff --git a/python_mutators/simple-chunk-replace.py b/python_mutators/simple-chunk-replace.py deleted file mode 100644 index 218dd4f8..00000000 --- a/python_mutators/simple-chunk-replace.py +++ /dev/null @@ -1,59 +0,0 @@ -#!/usr/bin/env python -# encoding: utf-8 -''' -Simple Chunk Cross-Over Replacement Module for AFLFuzz - -@author: Christian Holler (:decoder) - -@license: - -This Source Code Form is subject to the terms of the Mozilla Public -License, v. 2.0. If a copy of the MPL was not distributed with this -file, You can obtain one at http://mozilla.org/MPL/2.0/. - -@contact: choller@mozilla.com -''' - -import random - -def init(seed): - ''' - Called once when AFLFuzz starts up. Used to seed our RNG. - - @type seed: int - @param seed: A 32-bit random value - ''' - # Seed our RNG - random.seed(seed) - return 0 - -def fuzz(buf, add_buf): - ''' - Called per fuzzing iteration. - - @type buf: bytearray - @param buf: The buffer that should be mutated. - - @type add_buf: bytearray - @param add_buf: A second buffer that can be used as mutation source. - - @rtype: bytearray - @return: A new bytearray containing the mutated data - ''' - # Make a copy of our input buffer for returning - ret = bytearray(buf) - - # Take a random fragment length between 2 and 32 (or less if add_buf is shorter) - fragment_len = random.randint(1, min(len(add_buf), 32)) - - # Determine a random source index where to take the data chunk from - rand_src_idx = random.randint(0, len(add_buf) - fragment_len) - - # Determine a random destination index where to put the data chunk - rand_dst_idx = random.randint(0, len(buf)) - - # Make the chunk replacement - ret[rand_dst_idx:rand_dst_idx + fragment_len] = add_buf[rand_src_idx:rand_src_idx + fragment_len] - - # Return data - return ret -- cgit 1.4.1