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Thread: Flexlm Stepped Walkthrough

  1. #1
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    Post Flexlm Stepped Walkthrough

    Hi all, I would like to share my experience in creating a flexlm license file by describing all the necessary steps.
    I have not yet found a complete walkthrough so I hope this helps future users.
    People that are more experienced can comment and help to enrich the procedure.

    My flexlm version is 11.12 lets find out if we can create a lic.txt
    For this I have already downloaded flexlm sdk 11.9 86 and 64 versions.

    I am going to start with my server today, keep in touch.

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  4. #2
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    Post Re: Flexlm Stepped Walkthrough

    ok, lets go.
    1. Use Flexlm Vendor Key Generator 3.0 to create vendor keys.
    I selected 11 version in the options and put the server name in the Vendor Name slot.
    the result looks like this:

    /* Version 11 keys */
    #define VENDOR_KEY1 0x54ca9326
    #define VENDOR_KEY2 0xed82e159
    #define VENDOR_KEY3 0xf67b305a
    #define VENDOR_KEY4 0x0605a63d
    #define VENDOR_KEY5 0x191657c4
    #define TRL_KEY1 0x1f1abe22
    #define TRL_KEY2 0x508f8593

    #define VENDOR_NAME "vega"

    2. Following docslide-net_flexlm7x-114seedextraction.pdf instructions I created I dummy.dat file using notepad and inside it I wrote these

    SERVER VEGA ANY
    VENDOR adskflex
    USE_SERVER
    INCREMENT test adskflex 1.000 20-mar-2015 1 0123456789AB

    3. Continuing to follow the above instructions I downloaded the ollydbg 2.0 and now I am going to use it to extract the seed1 and seed2

  5. #3
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    Default Re: Flexlm Stepped Walkthrough

    ollydbg does not work with 64 bit systems, gonna try downloading another one.
    IDA, Immunitysec, windbg I am going to try with these ones.

    I installed x64_dbg and now trying to figure out how it works.
    Last edited by BinaryRay; 2015-03-20 at 09:05 PM

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    Default Re: Flexlm Stepped Walkthrough

    @BinaryRay

    If you;re looking for a good example, start with Nolan Blender's Zendenc.
    It uses an old version of flexlm but gives a nice example how it works.

  7. #5
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    Default Re: Flexlm Stepped Walkthrough

    try to practice on a 32bit target if you're a beginner.

  8. #6
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    Default Re: Flexlm Stepped Walkthrough

    Ok, what is the step 4? For me this topic is really interesting. Did you extract the seeds by ollydbg 2.0? Please share your experience.

  9. #7
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    Default Re: Flexlm Stepped Walkthrough

    fishing the seed on x64 targets is a little bit different from the x86... Use IDA and the correct sig...

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  11. #8
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    Default Re: Flexlm Stepped Walkthrough

    When I am trying to find the seeds by both script/manually in Olly or W32Dasm all my demons.exe crash with the massage in a box "Flexible License Manager:...daemon name...can't initialize". These demons are 32bits and I used 32 bit winXP VS.
    How to solve the problem, where is my mistake?

  12. #9
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    Default Re: Flexlm Stepped Walkthrough

    Flexlm does not like virtual machines.. Only the last versions, starting from the v11.10.. You need to use a working partion...

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  14. #10
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    Default Re: Flexlm Stepped Walkthrough

    Hi,
    Thanks for the replay. My mistake seems to be not linked to VS because I tried these examples on also both win 7 32 and 64 bit. I will upload some example but the error is that:


    Any other suggestions?

    This the above simple example:
    https://mega.co.nz/#!qw8AyJ5a!8rBdQg...yCgQxrDIvBNz3g
    and this is my real target:
    https://mega.co.nz/#!qkNEFICQ!iYLHVw...z87xc2FFlZ4RrM
    Last edited by kometata; 2015-04-02 at 12:57 AM

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