Flexlm ECC alternate patching methods

[bridgeic]

Originally Posted by nikkapedd

You need only to change the public key not the private ..
Every time the program check the public key, then authenticate your sign according with the vendor's pubkeys..

alekine322, patching only the vendor is not enough to make a working license.. You need to patch also the ECC in the exe/dll files

Beside the patch, we still need get lmcrypt that has private/public key paris that match with the patch. Seems compile SDK with setting s below will create private/public keys that consistent with the patch, so I ask
what's the relationship.

#define LM_SEED1 0x11111111
#define LM_SEED2 0x22222222
#define LM_SEED3 0x33333333

[alekine322]

Originally Posted by nikkapedd

alekine322, patching only the vendor is not enough to make a working license.. You need to patch also the ECC in the exe/dll files

YES, is correct

[bridgeic]

Originally Posted by nikkapedd

gurandiL, you can build your vendor using lmseeds
lmseeds1= 0x11111111
lmseeds2= 0x22222222
lmseeds3= 0x33333333
......

@nikkapedd,

What's the relation ship between "lmseeds1,2,3" and ecc public key/private key, how should I do in SDK setting if I want set my own private key?

What difference Between Flex V.11.9 and 11.10?
Is this added new security protection?

[gemuz]

If you know how to deal with the protection , there is no difference

how i can keygening flexlm with asr activation?

[nikkapedd]

aliahwaztop, you simply need to build the trusted storage.. Then you can build any asr file..If the target use ECC you need a right pub key or patch the fnp library

Originally Posted by nikkapedd

aliahwaztop, you simply need to build the trusted storage.. Then you can build any asr file..If the target use ECC you need a right pub key or patch the fnp library

http://uplod.ir/nh4kni5rjqec/{E72B9A32-8C42-46B5-9_E-78DAED13_36}.rar.htm
please tell me step y step how i can do it.

[rcer]

Originally Posted by nikkapedd

aliahwaztop, you simply need to build the trusted storage.. Then you can build any asr file..If the target use ECC you need a right pub key or patch the fnp library

nikkapedd, can you provide some additional info about patching the fnp library

thanks
rcer

[u_f_o]

Originally Posted by toro

to find verification function simply search for push 21b.
...

this works only for 32-bit binaries.
more common way is to find constant 2930h.
it is contained only in l_pubkey_verify and l_prikey_sign.
l_prikey_sign does not contain constant 0FFFFFFF8h,
which occurs in l_pubkey_verify at least one time.

[u_f_o]

but i think you all are knowing all about l_pubkey_verify.
i want to ask, what do you think about SQUAD method to force winapi32.dll to work as loader?
there are now 2 such releases on rutracker.org.

[FasciHunter]

I finished reading all reply carefully, found that there is a lot to learn more¡¡about¡¡Flexlm

[rcer]

Hi,

I have patched l_pubkey_verify on one of my targets which now runs fine on Win7.
However on Win10 it refuses to run, and I get the invalid license message.
Does anybody have a hint why this is happening?

rgds

[FoxB]

you have signed file and next patched?

[rcer]

No, and I am not sure what you mean with signed file and next.

Can you fill me in?

rgds