As the title says my problem is that I wiped my Mac (I think it's like 2009) and when i tried to reinstall the osx in disk utiliy, it asks me for my apple id which i put in, then the authorization code comes on my phone, but no field to put it in on the mac, so i tried booting it up on a disk, but no hard disk shows up, I'm super confused by this, i tried looking up things but nothing helps. Apple may provide certain information about your device and purchase to T-Mobile/Sprint to facilitate and verify your eligibility for this Special Offer. $200 rebate via virtual prepaid Mastercard® Card, which you can use online or in-store via accepted mobile payment apps; no cash access & expires in 6 months.

Mrt App Reddit Macbook
Mrt App Reddit Macbook
Mac Mrt.app

Apple’s little known malware removal tool gets a signature update. But what is this new malware family MACOS.35846e4? Find out on this journey inside MRT

We’ve noted before that Apple’s built-in security technologies have been missing some updates of late, and we weren’t the only ones. So, when Apple dropped a couple of updates to MRT and XProtect last week, the macOS community raised a collective eyebrow of interest. With XProtect having hardly seen a significant update since March of 2018, there were high hopes that Apple were finally playing catch-up with the rounds of macOS malware that have appeared since XProtect’s last update.

As it turned out, the updates were underwhelming on the one hand and curious on the other. XProtect merely received a bump for the minimum Flash player plug-in (now, minimum required version is 32.0.0) but otherwise added no new malware families, while MRT only added a single new malware family to its search-and-remove definitions, an item Apple designated MACOS.35846e4.

The addition to MRT caused some consternation among macOS security enthusiasts as this nomenclature is unfamiliar to the wider macOS research community: what is the mysteriously named MACOS.35846e4? Were Apple discovering new malware and keeping the details from the wider security community? It wouldn’t be the first time they’ve been accused of such.

We decided to take a look at the MRT.app and find out for ourselves.

Inside MRT.app

The Malware Removal Tool (MRT.app) is an Apple application that lives in the CoreServices folder located in /System/Library, rather than the Applications or Utilities folders where user level programs are typically located. Software screaming eagle race tuner hack. Despite taking the form of an application bundle, MRT is not supposed to be launched by users.

However, it does possess some command line options which allow it to be invoked either as an agent or daemon, and interestingly also may generate an error message related to the mysterious new malware family:

The error message doesn’t give us any clue as to what MACOS.35846e4 is though. Figuring out what MRT looks for requires a couple of different approaches. The first thing we need to do is grab a copy of the binary to play with. Even though we don’t plan to write to the binary and it’s protected by System Integrity Protection (which is designed to prevent modifications), working with a copy of a binary during analysis is just a habit that you should always adopt when reverse engineering. We can grab a copy of the binary by executing ditto to write a copy of the binary to the Desktop.

sudo ditto MRT ~/Desktop/MRT_COPY

Pulling Strings

The first step in reverse engineering an executable file is usually to dump the plain text ASCII characters embedded in the file. Simply dumping the strings from the binary will often reveal hardcoded file paths. There’s a couple of ways to achieve this, but the built-in macOS utility, conveniently called strings, is probably the easiest. The strings utility contains a stub by default that actually installs the full utility the first time you use it. Pass the -a flag and the path to the file name, and output the strings to a new file:

strings -a ~/Desktop/MRT_COPY > ~/Desktop/MRT_Strings.txt

You can scroll and search through the new file in a text editor of your choice. Note that the output is just a dump of every string in the binary, and there’s no way to automatically determine from this which strings are actually malware definitions and which are just strings used for other purposes in the binary. That said, many are obvious given a little experience, but it’s important to treat the output with caution until or unless you can verify a file path is related to malware from further checks.

Aside from the fact that there’s no intrinsic way to distinguish the strings from one another, there’s another problem: the strings don’t contain all of the definitions. And although we can search through the strings for the family name MACOS.35846e4, the output doesn’t give us any clear indication of the malware that it refers to.

It’s time to dive a bit deeper.

Static Code Analysis

For this, you need a disassembler like Cutter or Hopper. In this example, we’ll use Hopper because it gives a slightly cleaner and easier to read output.

We begin by searching for references to the string 35846e4 in Hopper’s strings section.

Star Trek Novels Collection Ebook torrent free downloads, 52160. Shared by:neuro 1967 TOS Star Trek 01.rar 956.85 KBs 1968 TOS Mission to Horatius.rar 2.06 MBs 1968 TOS Star Trek 02.rar 373.78 KBs 1969 TOS Star Trek 03.rar 256.63 KBs 1970 TOS Spock Must Die!rar 284.33 KBs 1971 TOS Star Trek 04.rar 279.34 KBs 1972 TOS Star Trek 05.rar 278.65 KBs 1972 TOS Star Trek 06.rar 290.01 KBs 1972. Star trek ebooks torrent. Star Trek 760 ePub eBooks Collection. Star Trek - TTN 05 - Over a Torrent Sea # Christopher L. Bennett.epub Star Trek - TTN 06 - Synthesis # James Swallow.epub Star Trek - TTN 07 - Fallen Gods # Michael A. Martin.epub Star Trek - TTN 09 - Absent Enemies # John Jackson Miller.epub.

From here, we find a reference to the string being loaded into the rdi register. That’s interesting! One of the uses of the rdi register is to hold the first argument in a call to an Objective-C function. Switching to Hopper’s pseudocode view shows us that the string is being loaded into the register from within another function sub_1000ca9a0, where we find a treasure trove of ASCII characters hidden in byte code. This image shows one collection of 13 characters found in the function, each held in a separate variable:

We can do a quick-and-dirty check to see if they’re interesting on the command line: Restoro 2.0.1.3 lisans anahtar ne.

The string turns out to be sendLogEvent:, which looks like an Objective-C method call due to the presence of the colon on the end. That’s enough to peek our interest. Scanning through the rest of the method, we see lots more individual variables holding hex values that map to ASCII character codes. To see what they hold, we’ll just dump the whole function into a text file and do some text manipulation to isolate and translate the hex values. This results in the following strings:

We recognize some of these as classic adware strings, so it seems that MACOS.35846e4 is some form of new adware. Let’s check out VirusTotal and see if we get any matches.

Mrt App Reddit Macbook

Old Adware, New Variant

Fortunately for us in this case, we get a bunch of hits:

This is a family of adware that’s been around a long time but was updated after the release of macOS 10.14 Mojave to take into account Apple’s implementation of new user protections. The adware appears to users under various names like “MacSecurityPlus” and “MacOSDefender”.

There’s a hidden folder at ~/Library/Application Support/.dir that contains an application called “CompanyUpdater”. A persistence agent in the user’s Library LaunchAgents folder ex