extremecoders-re

Container C1

$ docker run --rm --name c1 --ipc shareable -it ubuntu:18.04 /bin/bash
# mkfifo /dev/shm/mypipe
# echo "Hello from C1" > /dev/shm/mypipe 

Container C2

$ docker run --rm --name c2 --ipc container:c1 -it ubuntu:18.04 /bin/bash

extremecoders-re

def get_video_url(url):
    videos = []
    params = []
    addon_log(url)
    xbmc.log(url, level=xbmc.LOGWARNING)
    quality = (Addon.getSetting('qualityType')).lower()
    resp = api_hotstar_request(url, auth=True)    
    manifest1 = resp['body']['results']['item']['playbackUrl']
    addon_log('manifest1 is, '+manifest1)

extremecoders-re

Prevent creation of vmmem files in VMware (Windows)

Issue

VMWare creates .vmem files to back the guest RAM. On the host this causes disk thrashing especially during powering on and off the guest.

Solution

Add the following lines to the .vmx file to prevent creation of .vmem files. This will reduce disk IO and VM performance will improve especially on non-SSD disks.

extremecoders-re

Environment

The steps shown below are done on a Ubuntu VM using Qemu 3.0

$ qemu-system-arm -version
QEMU emulator version 3.0.0
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

To quit Qemu at any time press Ctrl+a x, i.e. Ctrl+a and then x

extremecoders-re

Debug a program in qemu with piped input

Within qemu

1. Create named pipe

pi@raspberrypi ~ $ mkfifo thepipe

2. Start a netcat listener which outputs to the pipe (redirected STDOUT)

extremecoders-re

#!/usr/bin/sh

echo "[+] Checking for updates..."

path_bases_cav="/c/Program Files/COMODO/COMODO Internet Security/scanners/bases.cav"
update_url="http://cdn.download.comodo.com/av/updates58/sigs/bases/bases.cav"

hash_check () {
	# Download first 256 bytes (after header) of remote stream
	tmp_first_256_remote=`mktemp`

extremecoders-re

Setting up Qemu with a tap interface

There are two parts to networking within QEMU:

• The virtual network device that is provided to the guest (e.g. a PCI network card).
• The network backend that interacts with the emulated NIC (e.g. puts packets onto the host's network).

Example: User mode network

extremecoders-re

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

void genMatrix(char mat[5][5], char str[]) {
	for (int i = 0; i < 25; i++) {
		int m = (i * 2) % 25;
		int f = (i * 7) % 25;
		mat[m/5][m%5] = str[f];
	}

extremecoders-re

Environment: Windows 7 SP1 x86

1. Start a Visual Studio Command Prompt
2. Install unicorn pip install unicorn
3. Install capstone from http://www.capstone-engine.org/download.html Python module for Windows - Binaries
4. Install angr pip install angr

extremecoders-re

.ATmega328
; Ida avr.cfg (c) THANATOS

SUBARCH=5

RAM=2048
ROM=32768
EEPROM=1024

; MEMORY MAP