This study focuses on the strategies used by the "xz backdoor", an extremely
complex piece of malware that contains its own x64 disassembler inside of it
to find critical locations in your code and hijacks it by swapping out your
code with its own as it runs. Because this a machine-code based attack,
all code written in any program language can be attacked and is vulnerable.
Instead of targeting sshd directly, the xz
backdoor injects itself in the parent systemd process then hijacks the
GNU Dynamic Linker (ld), before sshd is even started or libcrypto.so is
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import React, { useReducer, useEffect, useRef } from 'react'; | |
import firebase from 'firebase/app'; | |
import equal from 'deep-equal'; | |
function filterKeys(raw, allowed) { | |
if (!raw) { | |
return raw; | |
} | |
let s = new Set(allowed); | |
return Object.keys(raw) |
ESPN's hidden API endpoints
Latest News: http://site.api.espn.com/apis/site/v2/sports/football/college-football/news
Latest Scores: http://site.api.espn.com/apis/site/v2/sports/football/college-football/scoreboard
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#![feature(asm)] | |
#![feature(lang_items)] | |
#![crate_type = "staticlib"] | |
#![no_std] | |
const GPIO_BASE: u32 = 0x3F200000; // base address for Pi 2 and Pi 3 | |
fn sleep(value: u32){ | |
for _ in 1..value { | |
unsafe { asm!("");} |
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ZigZag-Encoding | |
--------------- | |
Maps negative values to positive values while going back and | |
forth (0 = 0, -1 = 1, 1 = 2, -2 = 3, 2 = 4, -3 = 5, 3 = 6 ...) | |
(i >> bitlength-1) ^ (i << 1) | |
with "i" being the number to be encoded, "^" being | |
XOR-operation and ">>" would be arithemtic shifting-operation |
This guide assumes that you recently run brew upgrade postgresql
and discovered to your dismay that you accidentally bumped from one major version to another: say 9.3.x to 9.4.x. Yes, that is a major version bump in PG land.
First let's check something.
brew info postgresql
The top of what gets printed as a result is the most important:
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/***************************************** | |
/* DOM touch support module | |
/*****************************************/ | |
if (!window.CustomEvent) { | |
window.CustomEvent = function (event, params) { | |
params = params || { bubbles: false, cancelable: false, detail: undefined }; | |
var evt = document.createEvent('CustomEvent'); | |
evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail); | |
return evt; | |
}; |
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