x0nu11byt3

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

class Karatsuba {
private:
    // Remove leading zeros
    static string stripZeros(const string &num) {
        size_t pos = num.find_first_not_of('0');

x0nu11byt3

#include <iostream>
#include <vector>
#include <cstdlib>
#include <ctime>
using namespace std;

class TernarySearch {
private:
    vector<int> data;   // sorted data
    int comparisons;    // count comparisons

x0nu11byt3

#include <iostream>
#include <vector>
#include <cstdlib>
#include <ctime>
using namespace std;

class BinarySearch {
private:
    vector<int> data;   // Sorted array
    int comparisons;    // Count of comparisons

x0nu11byt3

Keybase proof

I hereby claim:

• I am x0nu11byt3 on github.
• I am x0nu11byt3 (https://keybase.io/x0nu11byt3) on keybase.
• I have a public key whose fingerprint is 3611 378E 9F55 2535 7C14 C28E 7FB2 0695 50E8 9AF0

To claim this, I am signing this object:

x0nu11byt3

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

int main ( int argc, char** argvs ) {
    int a = -127;
    int b = 4;
    int mod_ = a % b;
    int mod_alt_a = a - b * ( a / b );
    // mod_alt works as alternative to modulo
    int mod_alt = a & ( b - 1 );

x0nu11byt3

from z3 import *
import struct

# calculate e,f,d for a given input password
def calc(m):
    e = 0
    f = 0
    d = 0
    for i in xrange(0, len(m)):
        c = ord(m[i])

x0nu11byt3

#include <stdio.h>
#include <stdlib.h>
#define MAX_SIZE 50

typedef struct  {
    int key;
    char name[MAX_SIZE];
    char departament[MAX_SIZE];
    char category[MAX_SIZE];
    float antiquity;

x0nu11byt3

Advent Calendar CTF 2014

Aditional note: This is a translated version of the original project gist.github.com/st98/memo.md

We participated as Bok Team omakase. The final score was 173 points and the team was ranked 24th (out of 505 teams). We solved the problems on days 1 to 14, 21 to 22 and 25.

1 warmup (misc)

'0x41444354465f57334c43304d335f37305f414443374632303134'.match(/[0-9a-f]{2}/g).map(function(c){return String.fromCharCode(parseInt(c, 16))}).join('');

x0nu11byt3

#!/usr/bin/env python3

import os
import sys 
import paramiko

class SSHClient:
    
    def __init__(self,hostname, port, username, password):
        self._port = port

x0nu11byt3

#!/usr/bin/env python3

import numpy as np
class error(Exception): pass

class GaussJordan():
    def __init__(self,x,y):
        self.m = x
        self.n = y
        self.matrix = [[ 0 for i in range(x)] for j in range(y)]