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Office 2k7 Password Challenge

April 14th, 2013, 7:40

Dear Guru`s

I got this excel file in 2k7,

Details: AES 128 bits - 2007 Office

i cannot tell you how many digits since i did set the cracking parameters to UNKNOWN
but found that it was as easy as 123

The Challenge is:

I ran the Cracking for about 20min. and got the Password on my I7-Extreme Processor

and was wondering how long this might take on a regular or any other Processor (not I7 Extreme)

if you feel FREE, you may run it, and see how long does it take with you.

thank you n Good luck n Thanks for Participating

:wink:
Attachments
Pass - AES 128 bits - 2k7.xlsx
(2.93 MiB) Downloaded 718 times

Re: Office 2k7 Password Challenge

April 14th, 2013, 7:46

Forgot to mention this:

you don`t have to CRACK it, just leave it for like 10min. to calculate and will tell u how long is the estimated time

thank you

Re: Office 2k7 Password Challenge

April 14th, 2013, 9:42

Do you want us to use any method or ayou interesting in the tame taken with a specific brute force app ?

Re: Office 2k7 Password Challenge

April 14th, 2013, 10:31

Cracking the password is not about encryption algorithm but about hashing algorithm
Office 2007 using 50000 rounds of SHA-1 hash runs on selected password.
Also password cracking depends greatly on the password itself, dictionary or hybrid dictionary attack could take about 5-10 minutes but brute force could take years
AES128 encryption is irrelevant in this case

Re: Office 2k7 Password Challenge

April 14th, 2013, 10:48

PM Sent...

:wink:

Re: Office 2k7 Password Challenge

April 18th, 2013, 2:58

einstein9 wrote:and was wondering how long this might take on a regular or any other Processor (not I7 Extreme)
if you feel FREE, you may run it, and see how long does it take with you.
thank you n Good luck n Thanks for Participating

half an hour with my (old) bi xeon E5430 using PRTK default profile

i cannot tell you how many digits since i did set the cracking parameters to UNKNOWN

4 digits...

Re: Office 2k7 Password Challenge

April 18th, 2013, 3:49

ici_lemmy wrote:
einstein9 wrote:and was wondering how long this might take on a regular or any other Processor (not I7 Extreme)
if you feel FREE, you may run it, and see how long does it take with you.
thank you n Good luck n Thanks for Participating

half an hour with my (old) bi xeon E5430 using PRTK default profile

i cannot tell you how many digits since i did set the cracking parameters to UNKNOWN

4 digits...


Wow, this is Impressing really, btw, some time ago (not far) i had a call from AccessData team
looking for a Meeting with our Forensic team, and this will take place soon (very soon)

I will open this subject with them really, since never tried it, but good to have some feedback
from you here about the estimated time for it.

Thank you for your juicy info. here

Correct 4, - 10 :wink:

Re: Office 2k7 Password Challenge

April 18th, 2013, 7:43

Oups...
I forgot my picture for thoose who don't know how PRTK works...
It's a mix between dictionnary and bruteforce
Attachments
prtk.png

Re: Office 2k7 Password Challenge

April 18th, 2013, 8:18

Was really happy with:

-Mr. Paul
-Geoffrey

they both know and cannot wait to meet them.

Re: Office 2k7 Password Challenge

April 18th, 2013, 17:53

Welll ...
I don't want to sound rude ...
Password - 1945
Took me 10 sec to find it using an old dual core 2 GHz.
Used Parallel Password Recovery Manager. Version 1.6
Used GPU support - ATI RADEON HD 3600 Series ....

Re: Office 2k7 Password Challenge

April 18th, 2013, 18:00

If i set password lenght to 4 digits (numbers only) i can crack it in 5 sec .... Just as in pictures attached.

Best regards and thanks for the challenge.
Now try to crack my truecrypt :)
Attachments
2.jpg
1.jpg

Re: Office 2k7 Password Challenge

April 18th, 2013, 18:06

Took me 10 sec to find it using an old dual core 2 GHz.
Used Parallel Password Recovery Manager. Version 1.6
Used GPU support - ATI RADEON HD 3600 Series ....

Even if GPU can seriously help, actually it really depends on how the software try to bruteforce the password... Doest it begins with letters or digits and how are they are ordered... I think that's why me picture does matter...

If I seted up PRTK to only try 4 digits, it would have taken approximately only 1min

Re: Office 2k7 Password Challenge

April 18th, 2013, 18:10

At any rate it's a very bad password, no matter what, if it's only 4 digits and you can try as many as you want, it's game over.
At any rate was a nice challenge and i've learned something new, but nothing that can't be done by any person.
If i took 5 sec. with a dual core and a GPU i guess that it would have taken a fraction of that with my Bitcoin mining rig ....

Re: Office 2k7 Password Challenge

April 18th, 2013, 18:12

Total time = 05 Seconds - only numbers - 4 digit.

Re: Office 2k7 Password Challenge

April 19th, 2013, 10:32

As an Update here, i figured something else might be Useful here for you guys

Office 2k7 - XLSX extension

rename the Ext. to .CAB and have a look inside it

if the file is Password Protected the file would be Damaged

some how something new

& Spildit, thnx for the participation here

:wink:

Re: Office 2k7 Password Challenge

April 19th, 2013, 17:08

einstein9 wrote:As an Update here, i figured something else might be Useful here for you guys

Office 2k7 - XLSX extension

rename the Ext. to .CAB and have a look inside it

if the file is Password Protected the file would be Damaged

some how something new

& Spildit, thnx for the participation here

:wink:



Very, VERYYYY Coooollll !
Thanks for sharing this.
Very cool !

Rename the file to CAB and use Universal Extractor on it whitout trying to open the file, just extract it with universal extractor.
Got the attached files/folders !
Attachments
Pass - AES 128 bits - 2k7.zip
(2.78 MiB) Downloaded 426 times

Re: Office 2k7 Password Challenge

April 19th, 2013, 17:11

EncryptionInfo

Code:
....$...¤...$........f...€..€...............M.i.c.r.o.s.o.f.t. .E.n.h.a.n.c.e.d. .R.S.A. .a.n.d. .A.E.S. .C.r.y.p.t.o.g.r.a.p.h.i.c. .P.r.o.v.i.d.e.r. .(.P.r.o.t.o.t.y.p.e.)...


DataSpaces Version :

Code:
<...M.i.c.r.o.s.o.f.t...C.o.n.t.a.i.n.e.r...D.a.t.a.S.p.a.c.e.s.............


Map :

Code:
........h........... ...E.n.c.r.y.p.t.e.d.P.a.c.k.a.g.e.2...S.t.r.o.n.g.E.n.c.r.y.p.t.i.o.n.D.a.t.a.S.p.a.c.e...


Primary :

Code:
X.......L...{.F.F.9.A.3.F.0.3.-.5.6.E.F.-.4.6.1.3.-.B.D.D.5.-.5.A.4.1.C.1.D.0.7.2.4.6.}.N...M.i.c.r.o.s.o.f.t...C.o.n.t.a.i.n.e.r...E.n.c.r.y.p.t.i.o.n.T.r.a.n.s.f.o.r.m...............................

Re: Office 2k7 Password Challenge

April 24th, 2013, 8:30

office files are zip files. if you extract them you get the full directory structure of them. It is why a lot of bad recoveries will class them as zip.

Re: Office 2k7 Password Challenge

April 24th, 2013, 9:17

Yes, it makes perfect sense.

Re: Office 2k7 Password Challenge

February 23rd, 2018, 16:53

F F 9 A 3 F 0 3 - 5 6 E F - 4 6 1 3 - B D D 5 - 5 A 4 1 C 1 D 0 7 2 4 6
ANY ONE DECRYPT
HOW TO DO??
Attachments
comparative chart-3.xlsx
ANY
(125 KiB) Downloaded 231 times
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