jrelo

#include <stdio.h>

int main() {
    int value = 10;     
    int *pointer = &value;  

    // print the address of the variable and the pointer value
    printf("Address of 'value': %p\n", (void *)&value);
    printf("Value of 'pointer': %p\n", (void *)pointer);

jrelo

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// demonstrate pointer basics
void pointerBasics() {
    int a = 42;
    int *ptr = &a;

    printf("Pointer Basics:\n");

jrelo

#!/bin/bash

get_heap_size() {
    local pid=$1
    local heap_size=0

    # Read the /proc/[pid]/maps file
    while read -r line; do
        if [[ "$line" == *"heap"* ]]; then
            local start_addr=$(echo "$line" | awk '{print $1}' | cut -d'-' -f1)

jrelo

iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -t nat -F
iptables -t mangle -F
iptables -F
iptables -X

jrelo

tcpdump -i wlan0 host 192.168.1.201 -w - -U | tee tama_`date +%F`.pcap | tcpdump -r -

jrelo

/* 
OLED:
GND -> GND
VCC -> 5v
SCK -> A5
SDA -> A4

IR Receiver:
GND -> GND
VCC -> 5v

jrelo

# clear existing rules
#sudo iptables -F
#sudo iptables -t nat -F
#sudo iptables -X

# allow forwarding for related and established connections
sudo iptables -A FORWARD -i wlan0 -o wlan0 -m state --state RELATED,ESTABLISHED -j ACCEPT

# allow forwarding from wlan0 to wlan0 (both directions)
sudo iptables -A FORWARD -i wlan0 -o wlan0 -j ACCEPT

jrelo

#!/bin/bash

# Conversion Functions
hex2dec() {
    printf "%d\n" "0x$1"
}

bin2dec() {
    echo "$((2#$1))"
}

jrelo

import socket
import select
from logzero import logger

# python forwarder.py localhost:1337 ipinfo.io:80
# curl -v http://localhost.com:1337 -H "Host: ipinfo.io"

# video: https://www.youtube.com/watch?v=32KKwgF67Ho

class Forwarder:

jrelo

ELF Format Cheatsheet

Introduction

Executable and Linkable Format (ELF), is the default binary format on Linux-based systems.

Compilation