OT Again - Excel Password Recovery

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M

Mark Solesbury

Guest
Evening

So Annoyed - I spent hours making a spreadsheet the other night in
excel, and out a password to open it.

Have now since forgotten the password. Not a clue what it is.

Does anyone have, or know of any software that will get it for me?

I've tried all the free stuff from a google search to no avail..........


--
Mark
90 90 200tdi - Ditched :(
87 RR V8 EFI - Sorn'd

http://www.mozilla.com/firefox/ - Firefox Rules!
http://fireftp.mozdev.org/ - FTP Plugin for Firefox
 

"Mark Solesbury" <[email protected]> wrote in message
news:[email protected]...
> Evening
>
> So Annoyed - I spent hours making a spreadsheet the other night in excel,
> and out a password to open it.
>
> Have now since forgotten the password. Not a clue what it is.
>
> Does anyone have, or know of any software that will get it for me?
>
> I've tried all the free stuff from a google search to no avail..........
>
>
> --
> Mark
> 90 90 200tdi - Ditched :(
> 87 RR V8 EFI - Sorn'd
>
> http://www.mozilla.com/firefox/ - Firefox Rules!
> http://fireftp.mozdev.org/ - FTP Plugin for Firefox

just mailed you off group

Si


 
On Thu, 1 Jun 2006 21:37:40 +0100, "GrnOval"
<[email protected]> wrote:

>
>
>just mailed you off group

I take it excel passwords aren't very secure?

AJH
 

"AJH" <[email protected]> wrote in message
news:[email protected]...
> On Thu, 1 Jun 2006 21:37:40 +0100, "GrnOval"
> <[email protected]> wrote:
>
>>
>>
>>just mailed you off group
>
> I take it excel passwords aren't very secure?
>
> AJH

when I worked as the CISO at a large bank, if we could crack an excel
password in under 5 minutes then it had to be reported to Head Office in
Tokyo.

basically, any microsoft password is pretty poor, and the tools are fairly
easy to come by to audit them

I love my job!

Si
Security Practice Solutions Architect


 
On Thu, 1 Jun 2006 22:50:25 +0100, "GrnOval"
<[email protected]> wrote:

>basically, any microsoft password is pretty poor, and the tools are fairly
>easy to come by to audit them

How about winzip?

AJH

 
AJH wrote:

> On Thu, 1 Jun 2006 22:50:25 +0100, "GrnOval"
> <[email protected]> wrote:
>
>
>>basically, any microsoft password is pretty poor, and the tools are fairly
>>easy to come by to audit them
>
>
> How about winzip?
>
> AJH

There are many tools that will break WinZip passwords, too.
 
Dougal wrote:
> AJH wrote:
>
>> On Thu, 1 Jun 2006 22:50:25 +0100, "GrnOval"
>> <[email protected]> wrote:
>>
>>
>>> basically, any microsoft password is pretty poor, and the tools are
>>> fairly easy to come by to audit them
>>
>>
>> How about winzip?
>>
>> AJH
>
> There are many tools that will break WinZip passwords, too.

There are tools that will break/crack pretty much any password!

I remember one long fun(?!) night sitting up in my office until
5am watching a piece of software slowly crack a Win2k Server Admin
password after I'd pulled the hard drive and extracted the
appropriate file for it to 'look' at. IIRC the software wasn't
exactly cheap tho.

Matt
 

"Matthew Maddock" <[email protected]> wrote in
message news:D[email protected]...
> Dougal wrote:
>> AJH wrote:
>>
>>> On Thu, 1 Jun 2006 22:50:25 +0100, "GrnOval"
>>> <[email protected]> wrote:
>>>
>>>
>>>> basically, any microsoft password is pretty poor, and the tools are
>>>> fairly easy to come by to audit them
>>>
>>>
>>> How about winzip?
>>>
>>> AJH
>>
>> There are many tools that will break WinZip passwords, too.
>
> There are tools that will break/crack pretty much any password!
>
> I remember one long fun(?!) night sitting up in my office until
> 5am watching a piece of software slowly crack a Win2k Server Admin
> password after I'd pulled the hard drive and extracted the
> appropriate file for it to 'look' at. IIRC the software wasn't
> exactly cheap tho.
>
> Matt

blimey - the windows server password ones are some of the "freeist" to come
by. The mechanisms are so well documented, you can gethold of a boot CD
that does everything for you, using a linux boot.

My counterparts in Tokyo were shocked to find out that one, proper data
encryption then started to come on stream - wonder why ;-)

Si


 
GrnOval wrote:
> "Matthew Maddock" <[email protected]> wrote in
> message news:D[email protected]...
>> Dougal wrote:
>>> AJH wrote:
>>>
>>>> On Thu, 1 Jun 2006 22:50:25 +0100, "GrnOval"
>>>> <[email protected]> wrote:
>>>>
>>>>
>>>>> basically, any microsoft password is pretty poor, and the tools are
>>>>> fairly easy to come by to audit them
>>>>
>>>> How about winzip?
>>>>
>>>> AJH
>>> There are many tools that will break WinZip passwords, too.
>> There are tools that will break/crack pretty much any password!
>>
>> I remember one long fun(?!) night sitting up in my office until
>> 5am watching a piece of software slowly crack a Win2k Server Admin
>> password after I'd pulled the hard drive and extracted the
>> appropriate file for it to 'look' at. IIRC the software wasn't
>> exactly cheap tho.
>>
>> Matt
>
> blimey - the windows server password ones are some of the "freeist" to come
> by. The mechanisms are so well documented, you can gethold of a boot CD
> that does everything for you, using a linux boot.
>
> My counterparts in Tokyo were shocked to find out that one, proper data
> encryption then started to come on stream - wonder why ;-)
>
> Si

This was many years ago now. I gave up on the IT lark ages ago after
getting bored of sitting in the server room until 5am trying to sort
problems out!

Matt
 
On 2006-06-01, Dougal <DougalAThiskennel.free-online.co.uk> wrote:

> There are many tools that will break WinZip passwords, too.

Winzip now has proper encryption, so if you choose a decent password
then it can be practically impossible to crack the password. Just
using alphanumeric passwords of 8 chars or so is not good enough, but
a 20-30 character password consisting of a phrase with a few
outlandish characters thrown in instead of spaces for example can make
password cracking take far too long to be worth it, and we're talking
several tens of years on a fast computer.

In my password auditing work, I can usually crack about 30% of a
Windows domain's passwords in the first half hour, and the next third
in about four hours, on a middling computer. If the NT lanman hashes
are turned off then this time increases dramatically as the lanman
hash contains a copy of the main password shifted to upper case, which
reduces the cracking effort enormously. Winzip passwords are more
time consuming to crack and if the password is decent, it's not worth
the bother.

--
Blast off and strike the evil Bydo empire!
 
On Fri, 2 Jun 2006 10:34:26 +0100, Ian Rawlings <[email protected]>
wrote:

>> There are many tools that will break WinZip passwords, too.
>
>Winzip now has proper encryption,

Interesting. It was only after I posted I realised the winzip option
is no good. The advantage of password protecting formulae in excel is
that you can leave a copy of the worksheet with a customer without
them being able to see how your workings were done.

AJH

 
Ian Rawlings wrote:
> On 2006-06-01, Dougal <DougalAThiskennel.free-online.co.uk> wrote:
>
>
>>There are many tools that will break WinZip passwords, too.
>
>
> Winzip now has proper encryption, so if you choose a decent password
> then it can be practically impossible to crack the password.

I wasn't aware that there had been a change (obviously!) - that's good news.
 
On 2006-06-02, Dougal <DougalAThiskennel.free-online.co.uk> wrote:

> I wasn't aware that there had been a change (obviously!) - that's good news.

You do have to make sure that it's selected, I think that it's the
default now, and if you select the earlier crap encryption it moans at
you and discourages you. I don't use winzip much though so don't know
which versions all this happened in.

--
Blast off and strike the evil Bydo empire!
 
Matthew Maddock <[email protected]> uttered
summat worrerz funny about:
> This was many years ago now. I gave up on the IT lark ages ago after
> getting bored of sitting in the server room until 5am trying to sort
> problems out!
>
> Matt

I sit next to a 'kin massive server room trying to sort out Humans via the
"long arm"... I know where I'd rather be sat. Damn these machines for
becoming too reliable (That should sort me a network crash for the morning
;-) )

Lee


 
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