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how to discover the encryption/decryption algorithm used in data captured by wireshark

I have a local network program : client program and server program , the client program need some updating but the coder is not available , so we want to develop the client program ourselves , when we used wireshark program to know the communication way between the client and server program , we saw the login data we entered seems to be encrypted as attached , the login user was: 65479

and the password was: 12345@

and we saw the data in the attached file , we want to know the encryption/decryption algorithm used so we can communicate with the server by new program

Skills: C Programming, C++ Programming, Computer Security, Java, Linux

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About the Employer:
( 50 reviews ) CAIRO, Egypt

Project ID: #19755583

11 freelancers are bidding on average $246 for this job

YuriyStepanovich

Hi Though I am good at encryption/decryption algorithm, I think you can't guess the encryption/decryption algorithm with only plain-text, cipher-text. To know it, it will be needed to analyze the client app. I ha More

$500 USD in 3 days
(4 Reviews)
5.7
ownmyserver

Hello Greetings...!! I have read your project requirements. We are familiar with all required technologies and we have expertise resource to start with your project. We have 4+ year experience in Software develo More

$200 USD in 2 days
(107 Reviews)
5.7
jangjinmei728

Hi there. I've read your job very carefully and understand what you want. I'm a Senior developer with 10+ years experience. I've high skills in C++ Programming, Crypto algorithm. Any of your requirements are welcome. I More

$140 USD in 7 days
(16 Reviews)
5.0
xinglong717

Cryptographt expert. I have many experiences. I can complete your project successfully. I'm software engineer and algorithm expert. I'm fullstack website developer and database manager. Thanks.

$250 USD in 7 days
(27 Reviews)
5.0
himalr

Hi, This sounds like something I'd like to work on. if you can send both the client and the server applications then I'm happy to look into this for you. Please reach me via chat if you are interested. Thanks.

$675 USD in 5 days
(4 Reviews)
3.4
rabbit1205

I have checked your requirements carefully! I am really interested in this project! I am familiar with encrypting and decrypting! I have long outsourcing experience on upwork! But I am new here! I can handle this proj More

$100 USD in 7 days
(1 Review)
0.6
shivaneway

Shall we discuss... I have experience in data analysis and develop the client application to receive data.

$100 USD in 30 days
(2 Reviews)
0.8
jinh20

hello i am very interested in your project i am an expert of doing like that job so you will receive perfect result from me thanks

$200 USD in 7 days
(0 Reviews)
0.0
techlinesols6

Dear Prospect Hiring Manager. Thank you for giving me a chance to bid on your project. i am a serious bidder here and i have already worked on a similar project before and can deliver as u have mentioned "I can do th More

$140 USD in 7 days
(2 Reviews)
0.0
minhnq1990

Hi, I understand that it is difficult to know the encryption/decryption algorithm using in your client/server program. If there is no one do the project for you, please inbox me and discuss more about your requiremen More

$250 USD in 30 days
(0 Reviews)
0.0
lakshay41295

Hey I am interested in your project I have done various projects regarding this in my career .hope to discuss with you

$155 USD in 7 days
(0 Reviews)
0.0