Flexlm ECC alternate patching methods

[zzfeed]

Originally Posted by toro

to find verification function simply search for push21b.
TS and activation is very weak, just 2 patch and you can add any license you want to license manager.
for changing pubkey, the best way is api hooking. every target which compiled with vs 2005 and higher with shared library is possible to hook to change pubkey.

It means two files need to be patched or other things? please expains in details,thanks

[rcer]

Hi Nathan,

I also tried tankers little pubkey tool, on a couple of different binaries, but had the same result and was unable to checkout any licences.
Could it be that somehow the pub/priv key pair is rejected because it was generated using default LMSEED values (0x1111111/0x22222222/0x33333333)?
I there a way to input different LMSEED values into tankers tool?

I also noticed that if you build lmcrypt using the above seed values, and you try to generate a license with SIGN= & SIGN2=; the length of the SIGN Key is 113/163/239 bit (depending on LM_STRENGTH), but the SIGN2 key length = 12 characters (i.e default)

rgds

RCER