Blaster Bug Arena Mac OS

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  1. Blaster Bug Arena Mac Os 7
  2. Blaster Bug Arena Mac Os X
  3. Blaster Bug Arena Mac Os 11
Although I'm quite pleased to see more recent versions of VirtualBox include support for legacy Sound Blaster 16 emulation, I have yet to see this feature even come close to working reliably. Attempts to use SB16 sound have left me very disappointed when I heard badly jumping/skipping/repeating sounds, when the same programs work absolutely fine under DOSBox, despite its inherently slower nature.
I was also disappointed to find absolutely NO reference in the docs or online to the proper BLASTER environment variable settings for VBox. There doesn't seem to be a way to configure it either. All I could find was to install the unnecessary drivers and let guest programs automatically detect the card's settings, when the official Sound Blaster specs highly recommend that programmers read the BLASTER variable to perform automatic detection, yet VBox so conveniently neglects to specify this critical information anywhere in their docs. My testing found the proper settings to be 'BLASTER=A220 I5 D1 H5', although this serves little purpose if it can't even play sound right.
I already have experience programming this card (and previous models), and the problem seems to be related to detecting whether DMA transfers have completed or not. By specifications, to detect this, two bytes are read from the DMA channel's length port to form a word, and when the value of this word resets to 0xFFFF, or 65535, then the DMA transfer has completed and another one can be started. The problem is that this remaining length never really seems to properly reset after the transfer has completed. The DMA remaining length value also doesn't seem to update properly during playback for the small chunks of sound I have managed to get to play through VBox's SB/SB16. All this value seems to do is attempt to change _occasionally_ and finally settle on some random values that usually coincide with some odd multiple of my sound buffer size, or are just plain random. Since this never seems to want to reset to 0xFFFF, at least at the right time anyway, then programs have no idea when to send the next chunk of sound for playback and things start to sound crazy, if anything is heard at all or worse, sometimes freeze VBox (although I think I may have been responsible for the couple of VBox freezes testing all this crap).
I've read that VBox uses the same SB16 emulation code that DOSBox uses, but there must be something different for the same programs to break under VBox. I'm surprised that problems with this feature seem to have gone neglected for so long since the option was originally made available in version 1.6.x. If nothing is going to be done to fix these problems, then it was a waste of time for the developers to put the feature in there, a headache for end users, and it may as well be removed since it doesn't seem to serve any useful purpose besides internal debugging in it's current state. Until it's properly fixed, it should be labeled as an experimental feature.
And while I'm at it, I'd also like to ask on behalf of all affected users (including myself) that something be done with the Win311 mouse lockup problem that's also apparently been present for far too long. DOSBox seems to have fixed their old mouse problems . . . doesn't seem too complicated to me, if only I was more familiar with languages other than BASIC then I'd investigate the source code repository myself. It's just a damn mouse, 2 axes, 2 or more buttons, PS/2 mouse standards have been around forever, most everyone has one, what is there to screw up?!?!?! They can make a 32 bit CPU run 64 bit instructions and operating systems, but don't even care to make a standard mouse work reliably . . . I just don't get it. I'm not asking for full blown guest additions for legacy systems, just a couple of bugfixes for very standard hardware emulation. I wouldn't be surprised if both problems have a related cause.
For anyone interested, much of my sound testing was done with a fairly small and robust program I personally wrote in QuickBASIC 4.5 as a foundation to experiment with custom audio compression/decompression algorithms - SB16WAVE.BAS. I've reviewed many other sources along with the formal SB/Pro/16 specs while writing this program, and it works 99.9% flawlessly in DOSBox, whether compiled, interpreted, or even interpreted with QB's little brother QBasic. I'll be happy to provide anyone in need with the source and executable, as long as I'm not held responsible for anything that may happen with it (not very likely). I also tested VBox sound in the game Redneck Rampage, which had a huge echo/stuttering problem and ran much slower than I expected it would.
Mac

Blaster Bug Arena Mac Os 7

Host: XP Pro SP2 - 2.53GHz P4
Guest: DOS 6.22 / Windows 3.11 (Sound tests were DOS only)
Blaster
Hex dump of the Blaster worm, showing a message left for Microsoft founder Bill Gates by the programmer
Technical nameAs Blaster
  • Worm.Win32.Blaster (Global Hauri)
  • W32/Blaster (Norman)
  • W32/Blaster (Sophos)
  • W32.Blaster.Worm (Symantec)

As Lovsan

  • Lovsan (F-secure)
  • W32/Lovsan.worm (McAfee)

Zx basic wars mac os. As MSBLAST

  • Worm.Win32.Blaster (Global Hauri)
  • Win32/Msblast (Microsoft)
  • WORM_MSBLAST (Trend Micro)
  • WORM_MSBLAST.[letter] (Trendmicro)
Win32.Poza (CA) Blaster (Panda)
AliasesLovsan, Lovesan, MSBlast
TypeWorm
Isolation2004
Point of originMinnesota (B variant only)
Author(s)Jeffrey Lee Parson (B variant only)
Port(s) usedRemote Procedure Call
Operating system(s) affectedWindows XP and Windows 2000

Blaster (also known as Lovsan, Lovesan, or MSBlast) was a computer worm that spread on computers running operating systems Windows XP and Windows 2000 during August 2003.[1]

The worm was first noticed and started spreading on August 11, 2003. The rate that it spread increased until the number of infections peaked on August 13, 2003. Once a network (such as a company or university) was infected, it spread more quickly within the network because firewalls typically did not prevent internal machines from using a certain port.[2] Filtering by ISPs and widespread publicity about the worm curbed the spread of Blaster.

In September 2003, Jeffrey Lee Parson, an 18-year-old from Hopkins, Minnesota, was indicted for creating the B variant of the Blaster worm; he admitted responsibility and was sentenced to an 18-month prison term in January 2005.[3] The author of the original A variant remains unknown.

Creation and effects[edit]

According to court papers, the original Blaster was created after security researchers from the Chinese group Xfocus reverse engineered the original Microsoft patch that allowed for execution of the attack.[4]

The worm spreads by exploiting a buffer overflow discovered by the Polish security research group Last Stage of Delirium[5] in the DCOMRPC service on the affected operating systems, for which a patch had been released one month earlier in MS03-026 and later in MS03-039. This allowed the worm to spread without users opening attachments simply by spamming itself to large numbers of random IP addresses. Four versions have been detected in the wild.[6] These are the most well-known exploits of the original flaw in RPC, but there were in fact another 12 different vulnerabilities that did not see as much media attention.[7]

The worm was programmed to start a SYN flood against port 80 of windowsupdate.com if the system date is after August 15 and before December 31 and after the 15th day of other months, thereby creating a distributed denial of service attack (DDoS) against the site.[6] The damage to Microsoft was minimal as the site targeted was windowsupdate.com, rather than windowsupdate.microsoft.com, to which the former was redirected. Microsoft temporarily shut down the targeted site to minimize potential effects from the worm.[citation needed]

The worm's executable, MSBlast.exe,[8] contains two messages. The first reads:

I just want to say LOVE YOU SAN!!

This message gave the worm the alternative name of Lovesan. Safest roulette strategy. The second reads:

billy gates why do you make this possible ? Stop making money
and fix your software!!

Bikrash mac os. This is a message to Bill Gates, the co-founder of Microsoft and the target of the worm.

The worm also creates the following registry entry so that it is launched every time Windows starts:

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun windows auto update=msblast.exe

Timeline[edit]

  • May 28, 2003: Microsoft releases a patch that would protect users from an exploit in WebDAV that Welchia used. (Welchia used the same exploit as MSBlast but had an additional method of propagation that was fixed in this patch. This method was only used after 200,000 RPC DCOM attacks - the form that MSBlast used.)[9][10]
  • July 5, 2003: Timestamp for the patch that Microsoft releases on the 16th.[2]
  • July 16, 2003: Microsoft releases a patch that would protect users from the yet unknown MSBlast. At the same time they also released a bulletin describing the exploit.[2][11]
  • Around July 16, 2003: White hat hackers create proof-of-concept code verifying that the unpatched systems are vulnerable. The code was not released.[5]
  • July 17, 2003: CERT/CC releases a warning and suggests blocking port 135.[12]
  • July 21, 2003: CERT/CC suggests also blocking ports 139 and 445.[12]
  • July 25, 2003: xFocus releases information on how to exploit the RPC bug that Microsoft released the July 16 patch to fix.[13]
  • August 1, 2003: The U.S. issues an alert to be on the lookout for malware exploiting the RPC bug.[5]
  • Sometime prior to August 11, 2003: Other viruses using the RPC exploit exist.[7]
  • August 11, 2003: Original version of the worm appears on the Internet.[14]
  • August 11, 2003: Symantec Antivirus releases a rapid release protection update.[6]
  • August 11, 2003, evening: Antivirus and security firms issued alerts to run Windows Update.[14]
  • August 12, 2003: The number of infected systems is reported at 30,000.[14]
  • August 13, 2003: Two new worms appear and begin to spread. (Sophos, a variant of MSBlast and W32/RpcSpybot-A, a totally new worm that used the same exploit) [15]
  • August 15, 2003: The number of infected systems is reported at 423,000.[16]
  • August 16, 2003: DDoS attack against windowsupdate.com starts. (Largely unsuccessful because that URL is merely a redirect to the real site, windowsupdate.microsoft.com.)[14]
  • August 18, 2003: Microsoft issues an alert regarding MSBlast and its variants.[17]
  • August 18, 2003: The related helpful worm, Welchia, appears on the internet.[18]
  • August 19, 2003: Symantec upgrades their risk assessment of Welchia to 'high' (category 4).[19]
  • August 25, 2003: McAfee lowers their risk assessment to 'Medium'.[20]
  • August 27, 2003: A potential DDoS attack against HP is discovered in one variant of the worm.[6]
  • January 1, 2004: Welchia deletes itself.[18]
  • January 13, 2004: Microsoft releases a stand-alone tool to remove the MSBlast worm and its variants.[21]
  • February 15, 2004: A variant of the related worm Welchia is discovered on the internet.[22]
  • February 26, 2004: Symantec lowers their risk assessment of the Welchia worm to 'Low' (category 2).[18]
  • March 12, 2004: McAfee lowers their risk assessment to 'Low'.[20]
  • April 21, 2004: Another variant is discovered.[20]
  • January 28, 2005: The creator of the 'B' variant of MSBlaster is sentenced to 18 months in prison.[23]

Side effects[edit]

Although the worm can only spread on systems running Windows 2000 or Windows XP, it can cause instability in the RPC service on systems running other versions of Windows NT, including Windows Server 2003 and Windows XP Professional x64 Edition. In particular, the worm does not spread in Windows Server 2003 because Windows Server 2003 was compiled with the /GS switch, which detected the buffer overflow and shut the RPCSS process down.[24] When infection occurs, the buffer overflow causes the RPC service to crash, leading Windows to display the following message and then automatically reboot, usually after 60 seconds.[25]

Minecraft demo play now no download. System Shutdown:

This system is shutting down. Please save all work in progress and log off. Any unsaved changes will be lost. This shutdown was initiated by NT AUTHORITYSYSTEM

Time before shutdown: hours:minutes:seconds

Blaster Bug Arena Mac Os X

Message:

Windows must now restart because the Remote Procedure Call (RPC) Service terminated unexpectedly.

Blaster Bug Arena Mac Os 11

Blaster Bug Arena Mac OS

This was the first indication many users had an infection; it often occurred a few minutes after every startup on compromised machines. A simple resolution to stop countdown is to run the 'shutdown /a' command,[26] causing some side effects such as an empty (without users) Welcome Screen.[27] The Welchia worm had a similar effect. Months later, the Sasser worm surfaced, which caused a similar message to appear.

See also[edit]

References[edit]

  1. ^'CERT Advisory CA-2003-20: W32/Blaster worm'. CERT/CC. 2003-08-14. Archived from the original on 2014-10-17. Retrieved 2018-11-03.
  2. ^ abc'MS03-026: Buffer Overrun in RPC May Allow Code Execution'. Microsoft Support. Microsoft Corporation. Retrieved 2018-11-03.
  3. ^'Minnesota Man Sentenced to 18 Months in Prison for Creating and Unleashing a Variant of the MS Blaster Computer Worm'. United States Department of Justice. 2005-01-28. Retrieved 2021-02-17.
  4. ^Thomson, Iain (2003-09-01). 'FBI arrests 'stupid' Blaster.B suspect'. vnunet.com. Archived from the original on 2008-11-01. Retrieved 2018-11-03.
  5. ^ abc'MSBlast W32.Blaster.Worm / LovSan :: removal instructions'. able2know.org. 2003-08-12. Retrieved 2018-11-03.
  6. ^ abcd'W32.Blaster.Worm'. Symantec. 2003-12-09. Retrieved 2018-11-03.
  7. ^ ab'The Lifecycle of a Vulnerability'(PDF). internet Security Systems, Inc. 2005. Archived from the original(PDF) on 2016-12-24. Retrieved 2018-11-03.
  8. ^'Worm:Win32/Msblast.A'. Microsoft Corporation. Retrieved 2018-11-03.
  9. ^Bransfield, Gene (2003-12-18). 'The Welchia Worm'(PDF). pp. 14, 17. Retrieved 2018-11-03.
  10. ^'Buffer Overrun in Windows Kernel Message Handling could Lead to Elevated Privileges (811493)'. Retrieved 2018-11-03.
  11. ^'Flaw In Microsoft Windows RPC Implementation'. 2003-07-16. Archived from the original on 2016-03-04.
  12. ^ ab'Buffer Overflow in Microsoft RPC'. 2003-08-08. Archived from the original on 2014-07-15. Retrieved 2018-11-03.
  13. ^'The Analysis of LSD's Buffer Overrun in Windows RPC Interface'. 2003-07-25. Archived from the original on 2018-02-17. Retrieved 2018-11-03.
  14. ^ abcdRoberts, Paul F. (2003-08-12). 'Blaster worm spreading, experts warn of attack'. Retrieved 2018-11-03.
  15. ^Roberts, Paul F. (2003-08-13). 'New Blaster worm variant on the loose'. InfoWorld. Retrieved 2018-11-03.
  16. ^Roberts, Paul F. (2003-08-18). 'Blaster worm attack a bust'. InfoWorld. Retrieved 2018-11-03.
  17. ^'Virus alert about the Blaster worm and its variants'. Microsoft Support. Microsoft Corporation. Retrieved 2018-11-03.
  18. ^ abc'W32.Welchia.Worm'. Symantec. 2017-08-11. Retrieved 2018-11-03.
  19. ^Naraine, Ryan (2003-08-19). ''Friendly' Welchia Worm Wreaking Havoc'. InternetNews.com. Retrieved 2018-11-03.
  20. ^ abc'Virus Profile: W32/Lovsan.worm.a'. McAfee. 2003-08-11. Retrieved 2018-11-03.
  21. ^'A tool is available to remove Blaster worm and Nachi worm infections from computers that are running Windows 2000 or Windows XP'. Microsoft Support. Microsoft Corporation. Archived from the original on 2014-08-06. Retrieved 2018-11-03.
  22. ^'W32.Welchia.C.Worm'. Symantec. 2007-02-13. Retrieved 2018-11-03.
  23. ^'Minnesota Man Sentenced to 18 Months in Prison for Creating and Unleashing a Variant of the MS Blaster Computer Worm'. 2005-01-28. Archived from the original on 2014-07-14. Retrieved 2018-11-03.
  24. ^Howard, Michael (2004-05-23). 'Why Blaster did not infect Windows Server 2003'. Microsoft Developer. Microsoft Corporation. Retrieved 2018-11-03.
  25. ^'Worm_MSBlast.A'. TrendMicro.com. Retrieved 2018-11-03.
  26. ^'Blaster Worm-Virus or Its Variants Cause the Computer to Shutdown with an NT AUTHORITYSYSTEM Error Message Regarding Remote Procedure Call (RPC) Service'. HP Consumer Support. HP. Archived from the original on 2014-11-10. Retrieved 2018-11-03.
  27. ^'Blaster Worm'. Techopedia. Retrieved 2018-11-03.
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