Discover gists

Fib

Simple fibonacci number calculator.

Usage: fib nth Fibonacci number

This study focuses on the strategies used by the "xz backdoor", an extremely
complex piece of malware that contains its own x64 disassembler inside of it 
to find critical locations in your code and hijacks it by swapping out your 
code with its own as it runs.  Because this a machine-code based attack,
all code written in any program language can be attacked and is vulnerable.

Instead of targeting sshd directly, the xz 
backdoor injects itself in the parent systemd process then hijacks the 
GNU Dynamic Linker (ld), before sshd is even started or libcrypto.so is

Backdooring Android Apps with FatRat and Metasploit Framework

We have to set a point, mobile applications are a HUGE market today. Many entrepreneurs left behind web-based experiences for building disruptive mobile solutions. The battle of smart-phones remains today between IOs and Android. Both have pros and cons, they are designed and configured with default security settings that maybe not the ideal for non-experienced people.

This writing demonstrates a practical and simple example on how to generate a Reverse TCP back-door on an existing APK file.

This is a pretty common "Social Engineering Attack", and it's focused on generating a reverse TCP connection, where the attacker easily can generate shell access to your Android phone in the time you are using the infected application and do some harmful stuff or access your private information without any concern.

And when a mean “Social Engineering Attacks” is because the way it propagates, I’ll explain in a bit how are the

Using Uni2Me

It's free but discontinued.

Using UTFCast

Proprietary software
Allows conversion from ANSI to UTF-8 with or without BOM

Using Notepad++

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

General rules

Follow standard conventions.
Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
Boy scout rule. Leave the campground cleaner than you found it.
Always find root cause. Always look for the root cause of a problem.

Design rules

How to make an MDM Mac shine like it's brand new ?

Works, as of 14/04/2024, on macOS 14.4.1 and lower (prob higher but idk)

This was made for Apple Sillicon Macs.

Restore Process

You need another Mac for this.

If you don't have one and have recovery locked, it's not possible.

	import tiktoken
	import langdetect
	T = tiktoken.get_encoding("o200k_base")

	length_dict = {}

	for i in range(T.n_vocab):
	try:
	length_dict[i] = len(T.decode([i]))
	except:

	import {useState, useEffect, useRef, useCallback} from 'react';
	import {View,Text,BackHandler, Share as RNshare, Platform} from 'react-native';
	import {WebView} from 'react-native-webview';
	import {useRoute, useNavigation} from '@react-navigation/native';
	import {useFocusEffect, useIsFocused} from '@react-navigation/native';
	import Share from 'react-native-share';
	import ReactNativeBlobUtil from 'react-native-blob-util';
	import styled from 'styled-components/native';
	import axios from 'axios';
	import HeaderComponentWithBackButton from '../components/HeaderComponentWithBackButton';

	public function getresultTree(array $elements, $parentId = 0) {

	$branch = array();

	foreach ($elements as $element) {
	if ($element['parent_id'] == $parentId) {

	$children = getresultTree($elements, $element['id']);
	if ($children) {

	import cv2
	img = cv2.imread('img.jpg')
	h, w, _ = img.shape
	# attention: one-dimentional vector
	attention /= max(attention)
	attention = attention.reshape((7,7))

	atten_norm = cv2.resize(attention, dsize=(w,h))
	atten_norm = atten_norm* 255
	heat_map = cv2.applyColorMap(atten_norm.astype(np.uint8), cv2.COLORMAP_JET)