CrackTcpip.sys for Vista SP1 RC v668 (17052)

[admin]

CrackTcpip.sys driver to patch half-open connection limit in Windows Vista SP1 RC v.668 with tcpip.sys version as 6.0.6001.17052.

Detail at the blog.

Note: CrackTcpip.sys for RTM version at post #14 at page 2.

[cracker60]

If it replaces 0x0A by 0xFF, the maximum number of connexions isn't 255, it is unlimited :
the instruction is cmp edx, 0Ah, the second operand is 8bit, but sign-extended to 32, so 0xFF means 0xFFFFFFFF

[sunfish]

Originally Posted by cracker60

If it replaces 0x0A by 0xFF, the maximum number of connexions isn't 255, it is unlimited :
the instruction is cmp edx, 0Ah, the second operand is 8bit, but sign-extended to 32, so 0xFF means 0xFFFFFFFF

Unless you're lookng at the source code, I don't think you know what you're talking.

[hanschke]

but not for x64 vista

[cracker60]

Originally Posted by sunfish

Unless you're lookng at the source code, I don't think you know what you're talking.

The blogs says :

When CrackTcpip.sys is ran, it will consistently monitor a memory address (offset 0×00059722 for Vista SP1 RC v.668) which store number of the half-open TCP concurrent connection limit. The original value of the bit of 0A, which translate into 10. When CrackTcpip.sys service detects that the value for the TCP/IP simultaneous half-open connection limit is 0A, it will hack and change the value to FF, which is 255.

At VA (not offset) 0x597222, you have the "cmp edx, 0Ah" instruction I talked about.

[Manugal]

Note that CrackTcpip.sys does not work in 64-bit Windows Vista (x64 edition), where Microsoft forces all drivers to be signed and certified by disable “bcdedit /set loadoptions DDISABLE_INTEGRITY_CHECKS” command which disables integrity check, failing all uncertified driver.

But if I run Vista with F8 and select Disable Integrity Check, it does work?

[Manugal]

Nothing, it doesn't work

With the new Microsoft tcpip.sys Patch it updates that file at 6.0.6000.16567 version. With the old TCP/IP AutoPatcher 1.5 can I toggle limit?

[PrEzi]

It doesn't work with SP1 v744.
It loads the drivers OK (says the service is running), but still gives
the EVID4226 errors in event viewer

[MrBeer]

I can second that Still getting error on 744

[Star1ck]

32bit versions:
---------------
* Install32-20689.bat
* Install32-16567.bat

64bit version:
---------------
* Install64-20689.bat
* Install64-16567.bat
http://www.yaronmaor.net/downloads/V...cPatch1.9b.rar