mpentler

// Conference Mood Badge - Mark Pentler 2020
// Tested with: ATTiny85 and 13
// Code rev: v0.3 07/08/2020
// 0.01: initial Arduino test code, ATMega328p based
// 0.1: Changed to ATTiny85, compiles fine
// 0.15: Switched to ATTiny13 and Microcore, switched to direct I/O and removed Arduino-like helper functions
// 0.2: Global LEDpin variable replaced with spare register - now 0 bytes RAM used!, compiled size now reduced by a third since 0.1!
// 0.3: Power improvements: ADC disabled saved 200-300ish microamps

#include <avr/sleep.h>

mpentler

// Conference Mood Badge - Mark Pentler 2020
// Tested with: ATTiny85 and 13
// 
#include <avr/sleep.h>
#include <avr/interrupt.h>
#include <avr/io.h>

uint8_t LEDpin = PB0; // start on green LED

void setup() {

mpentler

#include <avr/sleep.h>
#include <avr/interrupt.h>
#include <avr/io.h>

uint8_t LEDpin = PB0; // start on green LED

void setup() {
  // Configure our input and output pins
  DDRB = 0b00000111; // PB0-2 as inputs, leave PB3 (4th bit) as output (0)
  PORTB |= (1 << PB3); // enable the pull-up resistor on PB3

mpentler

#include <avr/sleep.h>
#include <avr/interrupt.h>
#include <avr/io.h>

uint8_t LEDpin = PB0; // start on green LED

void setup() {
  // Configure our input and output pins
  DDRB = 0b00000111; // PB0-2 as inputs, leave PB3 (4th bit) as output (0)
  PORTB |= (1 << PB3); // enable the pull-up resistor on PB3

mpentler

#include <avr/sleep.h>
#include <avr/interrupt.h>

int LEDpin = PB0; // start on green LED

void setup() {
    // Configure our input and output pins
    DDRB = 0b00000111; // PB0-2 as inputs, leave PB3 (4th bit) as output (0)
    PORTB |= (1<<PB3); // enable the pull-up resistor on PB3

mpentler

#include <avr/sleep.h>
#include <avr/interrupt.h>

const int redLED = PB2; // Define    the LED pins
const int yellowLED = PB1;
const int greenLED = PB0;

int LEDpin = greenLED; // start on green LED

void setup() {

mpentler

#include <avr/sleep.h>
#include <avr/interrupt.h>

const int switchPin = 3; // Define our button pin
const int redLED = 2; // Now the LED pins
const int yellowLED = 1;
const int greenLED = 0;

int LEDpin = greenLED; // start on green LED

mpentler

temperatures = get_input()

best_position = 0

for i in range (0,len(temperatures-1)):
    if temperatures[i] > temperatures[best_position]:
        best_position = i
    i++
    

mpentler

c = 33313552017317510057480429807191513781560058913982045828821573360115041698572293368677814047055248844068758060891046601601923786757545000748868407887139102932189242384290168374262947094252294487798373472224578486694039636927104808579329053474121672431941292997540298195365595309282858493105333766871550453
n = 112844860286954432023527367807878149508433045460166798540067347297771292932276845482784411114349669858383468974822784047292525847593138653258906565706208925369627344743018629414710772644379028885399261868138745339538284054287450499199325709844121836918861140479086394315063831615503697572215910036672241273
e = 65537
primes = (2267190209, # obtain from factordb.com
2397761813,
2536127557,
2634219361,
2652518087,
2677343507,
2678478181,

mpentler

import binascii
from pwn import * # pwntools

# connect
r = remote('2018shell.picoctf.com', 1225)

# binary
print r.readline() # get the first line over with
word1 = r.readline() # for some reason the word for part 1 is echoed, so read it in
print r.recvuntil("Input:") # skip to where we input word 1