elazarl

// This tiny program show how to cause fragmentation in golang, killing it
// even though no real memory is actually used.
// Compile:
// $ go build frag.go
// Run:
// $ time (setrlimit $[100*1000];./frag)
// .....(until it crashes)
package main

import "fmt"

elazarl

  setup xen environment

elazarl

package com.spark;

import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.HandlerList;
import org.eclipse.jetty.servlet.*;
import org.eclipse.jetty.servlets.EventSource;
import org.eclipse.jetty.servlets.EventSourceServlet;
import spark.Service;
import spark.Spark;
import spark.embeddedserver.jetty.EmbeddedJettyServer;

elazarl

#!/usr/bin/python3
"""
This scripts creates an isolated network environment,
and adds necessary configuration to the given QEMU command line to run
in this network.

WARNING: for development purposes only, allows PE for every user on the host.

Typical Usage

elazarl

#!/usr/bin/python

import sys
import os
import tempfile
import re

starts_with_ifndef = re.compile(r'^\s*#ifndef.*\n#define.*\n')
ends_with_endif = re.compile(r'#endif.*$')

elazarl

#include <ctype.h>
#include <stdio.h>

struct buf {
    unsigned char *p;
    uint64_t len;
};

void hexdump(struct buf buf) {
    int i = 0;

elazarl

#!/bin/bash
if [ -z "$@" ]; then
  echo Example usage:
  echo $0 ubuntu/xenial64
  echo Output:
  echo https://atlas.hashicorp.com/ubuntu/boxes/xenial64/versions/20160627.0.0/providers/virtualbox.box
  echo https://atlas.hashicorp.com/ubuntu/boxes/xenial64/versions/20160625.0.0/providers/virtualbox.box
  echo ...
  exit 1
fi

elazarl

#include <errno.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <regex.h>
#include <time.h>
#include <stdbool.h>

elazarl

#import <Foundation/Foundation.h>

@interface POD : NSObject<NSCopying>

-(nonnull NSString *)description;
-(nonnull NSDictionary *)toDictionary;
+(nonnull id)fromDictionary:(nonnull NSDictionary *)dict;
-(nonnull id)copyWithZone:(nullable NSZone *)zone;

@end

elazarl

This is a demonstration of how INT 13, ah=42 fails after a while.

Run 'bash debug.sh`, then hit `c` a couple of times, you should
see that INT 13 returns with CF set, which means it had an error.

Why is it happening? The code is pretty simple, all it does is reading
a sector from the disk, and copying it to some place in the memory.