dmaynor

Creating a Flipper Zero app to test for this attack involves writing a script that can interact with the RFID module on the Flipper Zero to perform the necessary steps. The Flipper Zero uses a scripting language called **.fap** (Flipper App) format, typically written in C or a high-level scripting language, but it also supports custom Python-like scripting with `flipperzero-tui`.

Here's a basic outline for creating an app that can check for the presence of the backdoor key on a MIFARE Classic card. Note that this is a simplified version and assumes some familiarity with Flipper Zero's development environment.

### **Step 1: Set Up the Development Environment**

1. **Install Flipper Zero SDK:** 
   - Follow the official [Flipper Zero documentation](https://github.com/flipperdevices/flipperzero-firmware) to set up the SDK and development environment.
   
2. **Clone the Flipper Zero Firmware:**

csknk

//! Examples for `unwrap_or_else()`
use std::process;


fn func(in_num: u8) -> Option<&'static str> {
    if in_num % 2 != 0 {
        return None;
    }
    Some("even")
}

JoeyBurzynski

58 bytes of CSS to look great nearly everywhere

When making this website, i wanted a simple, reasonable way to make it look good on most displays. Not counting any minimization techniques, the following 58 bytes worked well for me:

main {
  max-width: 38rem;
  padding: 2rem;
  margin: auto;
}

kevinz

//sniffer.c
//To compile : gcc -o sniffer sniffer.c -lpcap
//To run : ./sniffer [interface-name]

#include <pcap.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>