Need help in decrypting the encrypted TCP packet data received from the client

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  1. #1
    Newbie 81mhzalex is offline
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    Apr 2020 Join Date
    2Posts

    sad Need help in decrypting the encrypted TCP packet data received from the client

    Need help in decrypting the encrypted TCP packet data received from the client
    I want to decrypt the encrypted TCP packet data received from the client and I found the packet decryption method of this client someone uploaded to the Keroro Fighter community, but I have no idea how to use this.. I asked him for how to use, but he didn't respond. So I tried reverse engineering the game client using Ghidra(IDA pro is too expensive for me...)but I couldn't find anything useful information related to packet decryption. Could anybody let me know how to decrypt the encrypted TCP packet data received from the client?

    Game client file : https://drive.google.com/file/d/1WKP...68d5xyy8705t39
    AuthCodeDETOUR.exe (You'll need to detour the client's auth code verification to capture the packet data) : https://drive.google.com/open?id=1u9...NDD0MvB2MjTrEL
    KeroroGameModule.dll (I changed the client's destination ip address to localhost(127.0.0.1)) : https://drive.google.com/file/d/1nxs...MF7J-a1FnExF2v
    keroro_fighter.bms (you can extract the pack file with quickBMS program) : https://drive.google.com/open?id=1n_...ylj1NQ281U19UR


    Packet decryption method uploaded by someone

    Packet decryption result uploaded by someone

    Game packets I captured using Wireshark

    Help me plz
    Last edited by 81mhzalex; 11-04-20 at 08:43 AM.


  2. #2
    Registered DtS is offline
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    Apr 2020 Join Date
    CobraMu.COMLocation
    8Posts

    Re: Need help in decrypting the encrypted packet data received from the client

    search how to hook ssl / tls for packed encryption i think is better solution for that



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