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Search: Posts Made By: borisxyz
Forum: Reverse Code Engineering 04-08-2012, 04:00 PM
Replies: 2
Views: 4,103
Posted By borisxyz
Any good tut on how to crack this?

Any good tut on how to crack this?
Forum: Reverse Code Engineering 04-08-2012, 09:30 AM
Replies: 2
Views: 4,103
Posted By borisxyz
how to crack this?

I have software that uses a license in the following format. Can someone provide a reference on how to crack this? Thanks

FEATURE XXXXXXX_XXX
{

VENDOR = XXXXXX
VERSION = XXXX.X
END =...
Forum: Reverse Code Engineering 12-23-2011, 11:31 AM
Replies: 0
Views: 3,429
Posted By borisxyz
integrity check in the software protected by flexlm

Hello,

I am trying to unlock the flexlm protected software. The software has an integrity check and patching the software (ECC patch) results in a bunch of nasty errors on the screen. It seems I...
Forum: .NET Reverse Engineering 12-23-2011, 11:27 AM
Replies: 0
Views: 7,640
Posted By borisxyz
integrity check in the flexlm protected software

Sorry, posted the message in the wrong place
Forum: Reverse Code Engineering 07-22-2011, 10:53 PM
Replies: 4
Views: 5,904
Posted By borisxyz
wgpshadow: do you have a sample license for the...

wgpshadow: do you have a sample license for the daemon you could provide?
Forum: Reverse Code Engineering 06-07-2011, 07:10 PM
Replies: 13
Views: 8,003
Posted By borisxyz
I agree. learning is important. Lomex: How can...

I agree. learning is important.

Lomex: How can I find the integrity check in the software. I am almost positive if there is an integrity check it should be placed well before _l_init. As the client...
Forum: Reverse Code Engineering 06-06-2011, 12:51 PM
Replies: 10
Views: 12,547
Posted By borisxyz
Previn, After spending some time with this...

Previn,

After spending some time with this target, I eventually got stuck exactly at the same point where you are right now trying to generate the VENDOR_STRING line. It seems some expiration date...
Forum: Reverse Code Engineering 06-05-2011, 04:45 PM
Replies: 13
Views: 8,003
Posted By borisxyz
the deamon is at...

the deamon is at hxxp://depositfiles.com/files/cx1vp6vjt
the sample license is at hxxp://depositfiles.com/files/bnw234tga
Forum: Reverse Code Engineering 06-04-2011, 01:25 PM
Replies: 13
Views: 8,003
Posted By borisxyz
Bfox, I tried to patch my target to use the old...

Bfox, I tried to patch my target to use the old license format. The problem is if I patch the _l_pubkey_verify, the target crashes immediatelly with some nasty message on the screen... not sure what...
Forum: Reverse Code Engineering 06-03-2011, 03:22 PM
Replies: 13
Views: 8,003
Posted By borisxyz
Bfox: Can you please provide more details. If 60...

Bfox: Can you please provide more details. If 60 byte license hash is not compared with the correct hash in the code, how the decision right/wrong hash is made in the code? Thanks
Forum: Reverse Code Engineering 06-03-2011, 11:30 AM
Replies: 13
Views: 8,003
Posted By borisxyz
Bfix: My sign2 is 60 byte long......

Bfix: My sign2 is 60 byte long...

SIGN2="15CF \
D3B4 4A9E 9DDB 60DC 7FDE B99C DB7C 3595 F6DC B0FB E589 A2F2 A27E 7A91 \
1256 499E E95A EB64 8EDA 8E9D 765E 42D1 30D1 3D34 A83F BDF3 B9E7 5314...
Forum: Reverse Code Engineering 06-02-2011, 10:37 PM
Replies: 13
Views: 8,003
Posted By borisxyz
ECC hash for flexlm protected target

Hello,

I have a client protected with Flexlm which uses ECC in the license. I was looking through the code for a spot where the correct hash is generated and compared against what is in the license....
Forum: Reverse Code Engineering 05-12-2011, 09:17 PM
Replies: 14
Views: 9,899
Posted By borisxyz
Bfox: I have a question for you. Do you know the...

Bfox: I have a question for you. Do you know the difference between error code -53 and -73. The flexlm manual says checkout filter reject for both but something tells me that both filters are...
Forum: Reverse Code Engineering 05-08-2011, 04:32 PM
Replies: 14
Views: 9,899
Posted By borisxyz
Bfox: thanks Can someone advise which arguments...

Bfox: thanks

Can someone advise which arguments should I use when run the client software in IDA. lmgrd -t 11.1 3 -c license.dat?
Forum: Reverse Code Engineering 05-08-2011, 11:50 AM
Replies: 14
Views: 9,899
Posted By borisxyz
Bfox: Yes, I agree it has to be a checkout filter...

Bfox: Yes, I agree it has to be a checkout filter and I can see in the code "45" is pushed on a stack prior to lc_set _attr is called and yes, I would be able to get the address of the checkout...
Forum: Reverse Code Engineering 05-08-2011, 06:45 AM
Replies: 14
Views: 9,899
Posted By borisxyz
Bfox: s.n..p..s.l..m.d...

Bfox: s.n..p..s.l..m.d...
Forum: Reverse Code Engineering 05-07-2011, 10:23 PM
Replies: 14
Views: 9,899
Posted By borisxyz
LM_CHEKOUTFILTER for flexlm target

I have a target protected with flexlm which I am trying to unlock.

In the license file, I have a VENDOR_STRING line that encodes expiration data for the license. That tells me that there is a...
Forum: Reverse Code Engineering 03-21-2011, 11:01 PM
Replies: 4
Views: 4,159
Posted By borisxyz
Bfox: the deamon name is sldwks_d which is...

Bfox: the deamon name is sldwks_d which is S..O...L.I..D...W.O...R.K.S

I have reversed this software, extracting the encryption seeds and generating the signatures for the features. At this point,...
Forum: Reverse Code Engineering 03-20-2011, 08:46 PM
Replies: 4
Views: 4,159
Posted By borisxyz
Bfox, thanks... Yes, my program uses v5.x code....

Bfox, thanks... Yes, my program uses v5.x code.

I noticed in the program that the real signature is compared with the calcualted signature bit by bit in _l_ckout_string_key() but before that...
Forum: Reverse Code Engineering 03-19-2011, 08:15 PM
Replies: 4
Views: 4,159
Posted By borisxyz
date format for flexlm

Hello,

I have signature for the feature protected by flexlm. e.g.
6DEE14AB63183EF0BBBC. I noticed that 19th, 17th, 15th and 13th hex numbers (DE4B) are used to code the expiration date for the...
Forum: Reverse Code Engineering 03-18-2011, 07:33 PM
Replies: 1
Views: 4,519
Posted By borisxyz
flexlm crypt filter

Hello,

I have a target protected with flexlm and it uses a crypt filter. I located the crypt function and now I need to recover the xor/bit permutation table. I guess I was just wondering if there...
Forum: Reverse Code Engineering 02-06-2011, 04:14 PM
Replies: 10
Views: 12,547
Posted By borisxyz
flexlm license format

Hello, I have a license for software I am trying to reverse. I included a part of the license below and I have a few questions about the format.

VENDOR xxxxxx xxxxxxx
INCREMENT XXXXXX xxxxxx 1.0...
Forum: Reverse Code Engineering 02-06-2011, 10:41 AM
Replies: 7
Views: 5,982
Posted By borisxyz
Bfox, Thanks... I was able to get correct seeds...

Bfox, Thanks... I was able to get correct seeds form the vendor deamon after tracing the code through. The seeds are identical to the ones extracted from the target.
Forum: Reverse Code Engineering 02-05-2011, 07:19 PM
Replies: 7
Views: 5,982
Posted By borisxyz
Tedshred, What I noticed is that encription seeds...

Tedshred, What I noticed is that encription seeds extracted from the vendor deamon and target are different just as all other 1-5 keys, though, both sets work with flexlm

tedshred, yes you are...
Forum: Reverse Code Engineering 02-05-2011, 12:40 AM
Replies: 7
Views: 5,982
Posted By borisxyz
BfoX, I apologize I must have confused lots of...

BfoX, I apologize I must have confused lots of folks here. Of course, I meant error -44 (Flexlm invalid key data supplied).

It turned out that I made a mistake entering the key data in lm_code.h....
Showing results 1 to 25 of 28

 
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