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reverse engineer software database to enable viewing and editing

We are looking for someone super smart to look at the two attached files, to figure out how they work, and how we can edit them.

the two attached files are

numbers-Invs and descrp-Sold

these files can be opened up by a propriety software, that does not use a standard database technology. it is using a custom build it database system.

I need a way to be able to modify these files.

for example one of the line items you will see the number is 5954.66

and I want to be able to change that number to 5900.00

if you can figure out how to make this change, and teach me how to do it, we will have reached our goal.

I have tried to view these files with a hex editor, I see the description of the items, but I don't see the numbers.

I do know one thing, the app works this way;

numbers-Invs file contains the numbers. (5954.66 is somehow in this file, but I can not see it with the hex editor.)

descrp-Sold file contains the description of the items sold, example apple. I can see this and edit it with the hex editor and that works.

the challenge is finding the numbers, and modifying the numbers.

when I look at these two files from the propriety software, i see everything perfect. see the attached screenshots. "Image 00*.jpg"

Taidot: C++ -ohjelmointi, Tietokantaohjelmointi, SQL

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Tietoa työnantajasta:
( 3 arvostelua ) Los angeles, United States

Projektin tunnus: #19280486

10 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön

Ivan927

Hello! I am very interested in your post project. i have rich experience on it. I think this project is very suitable for me and i am sure i can give you good result . I can help you if you'd like looking forwar Lisää

$200 USD 3 päivässä
(7 arvostelua)
5.0
avto35217

Hi,dear. I understand your proposals and I am very interested in this job - 'reverse engineer software database to enable viewing and editing'. I am senior software developer and I am able to perform this task in timel Lisää

$155 USD 1 päivässä
(9 arvostelua)
4.1
mkmomy

Dear client, I can help you with the software. I have more than 8 years of experience in software development and web development using Microsoft technologies. I have expertise in ASP.NET, [login to view URL], WPF, Si Lisää

$180 USD 3 päivässä
(11 arvostelua)
4.5
ariscop

Prior experience reverse engineering file formats, including for a customer on freelancer Feel free to message me if you have any questions

$100 USD 3 päivässä
(1 arvostelu)
3.2
keiyang

Dear Client! I'm a Reversing Engineer. Hope you are doing well and thank you so much for the bid. I have more than 3 years of experience with Software Reverse Engineering / Cracking / Debugging(using Ollydbg,windbg Lisää

$200 USD 3 päivässä
(2 arvostelua)
2.2
Yonasi

Hi, we have a perfect team for this particular project. We can assure you 100% that we can deliver this professionally and on time. Please have a look at our CTO resume: [login to view URL] We can dis Lisää

$250 USD 3 päivässä
(2 arvostelua)
0.9
$230 USD 3 päivässä
(1 arvostelu)
1.0
YuriyStepanovich

Hello, I am good software engineer. I have many experiences with reverse engineering and data structure analysis. I can do your project. Please contact me to discuss more. Thank you.

$3333 USD 30 päivässä
(0 arvostelua)
0.0
$155 USD 3 päivässä
(0 arvostelua)
0.0
romanholyk

Hi. Few of my last projects were exactly about reverse engeneering. I believe this files are similar to access structure. It would be excellent if U could provide the beginning and endings of files.

$188 USD 5 päivässä
(0 arvostelua)
0.0