caprinux

TLDR

We are provided with an APK file, which can be statically decompiled via tools like JADX or JEB.

From the APK file, we can obtain the native library that is used to validate the 20 character passcode (between 0x0 - 0xF)

We can reverse the passcode checking function to brute force many possible passcode combinations.

We can use each of this combination to decrypt the ciphertext, one will finally work to give us the flag.

str4d

# Attempts to demangle all mangled symbols in the current program using the Rust
# mangling schemes, and replace the default symbol and function signature
# (if applicable) with the demangled symbol.
#
# License: MIT OR Apache-2.0
#@author Jack Grigg <[email protected]>
#@category Symbol

import string

OleksandrKucherenko

package your.name;

import android.annotation.TargetApi;
import android.app.Activity;
import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Build;
import android.os.Bundle;

pjkelly

How to setup your VMWare Fusion images to use static IP addresses on Mac OS X

At Crush + Lovely, we use Railsmachine's Moonshine to automate the configuration of our servers. When writing our deployment recipes, VMWare Fusion's ability to take snapshots and rollback to these snapshots is a huge timesaver because it takes just seconds to roll a server image to it's original state.

When you're just configuring a single server, having a static IP address for your server image isn't too important, but when you're configuring multi-server setups, it can be useful to duplicate a number of server images and give each a static IP address so you can consistently deploy to them. While not documented well at all, it turns out that this is relatively easy to accomplish in four simple steps.

1. Determine the MAC address of your guest machine

Let's say you have a guest machine with the name ubuntu-lucid-lynx-base a

marshall

//
// !!WARNING: Not recommended for production code!!
//
public class ClassLoaderActivity extends Activity
{
	public void onCreate(Bundle savedInstanceState)
	{
		// file.jar has a dex'd "classes.dex" entry that you can generate with "dx" from any number of JARs or class files
		ClassLoader dexLoader = new DexClassLoader("/path/to/file.jar", getCacheDir().getAbsolutePath(), null, getClassLoader());
		setAPKClassLoader(dexLoader);