jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

radiosilence

import sys
import colorsys
from colorz import colorz

WALLPAPER = '/home/james/.wallpaper'
COLORS = '/home/james/.colors'
XRESOURCES = '/home/james/.Xresources'

cols = ''
xres = """

captn3m0

I found the original CCTC Preliminary challenge disk in lab a few days back, and wanted to post it here in case someone wants to test their penetration testing/hacking skills. Harshil & Me had worked on it for the first round of the first iteration of CCTC (which we later won).

#Instructions

1. Get the VMWare image from http://clipx.cloudapp.net/cctc/
2. Hack.
3. Credentials are student:student (username:password)
4. Open <VM_IP>/cctc in your browser.

#Rules

karpathy

"""
Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
BSD License
"""
import numpy as np

# data I/O
data = open('input.txt', 'r').read() # should be simple plain text file
chars = list(set(data))
data_size, vocab_size = len(data), len(chars)

haasn

Firefox bullshit removal

Updated: Just use qutebrowser (and disable javascript). The web is done for.

sroettger

with (true) {
  // f() will allocate a buggy JSArray. The length is set to 24 but the capacity is only 16.
  // take a look at JSCreateLowering::ReduceJSCreateArray to see why this is happening
  function f(){
    var x = 8;
    var y = 0xffffffff;
    var ind = x & y;
    x = 16;
    y = 0xffffffff;
    var ind2 = ind + (x&y);

jaybosamiya

How to get IDA Python to work with IDA Demo

Go to the IDAPython binaries page. Download the latest _linux.zip file and extract it. In my case, it was idapython-6.9.0-python2.7-linux.zip. Follow the instructions in its README.txt.

For simplicity, I have copy pasted the relevant portions here:

Inndy

!function () {
    var global = this;
    var old_eval = global.eval;
    var old_const = global.Function.prototype.constructor;
    global.Function.prototype.constructor = function (code) {
        console.log('Function Constructor: ' + code);
        return old_const(code);
    };
    global.eval = function (code) {
        console.log('EVIL: ' + code);

jaybosamiya

IO Netgarage Level9 (Format String Vuln Exploit) Explanation

The vulnerable code

Here's the vulnerable code (/levels/level09.c):

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

mubix

• How to Build a Successful Information Security Career (Daniel Miessler)
  • https://danielmiessler.com/blog/build-successful-infosec-career/#gs.DtVCbbw
• The First Steps to a Career in Information Security (Errata Security - Marisa Fagan)
  • http://blog.erratasec.com/2010/04/first-steps-to-career-in-information.html#.WFrbofkrIuU
• Hiring your first Security Professional (Peerlyst - Dawid Balut)
  • https://www.peerlyst.com/posts/hiring-your-first-security-professional-dawid-balut
• How to Start a Career in Cyber security
  • https://www.concise-courses.com/security/how-to-start-your-career/
• How to Get Into Information Security (ISC^2)
• https://www.isc2.org/how-to-get-into-information-security.aspx