Rating: 1.0

![1](https://user-images.githubusercontent.com/94436222/141942138-42bacfd3-7979-4f5f-86c1-5c638094d75f.PNG)

I'm going to solve the "Careers" problem, one of the problems I solved
Let's take a look.

![2](https://user-images.githubusercontent.com/94436222/141942145-6f9d3ce9-94f1-463a-a722-3a10f2b1aca8.PNG)

First, "https://careers.chal.intentsummit.org/" must enter the site and acquire a flag.
Let's go to the website.

![3](https://user-images.githubusercontent.com/94436222/141942517-7446c418-3ee6-49c0-b270-78cbf3a80a6d.PNG)

It's a great site.(only frontend)

![4](https://user-images.githubusercontent.com/94436222/141942862-59ada80b-77cc-4e7d-b27f-b59158f3d866.PNG)

I want to press the "career" button.

Let's press it right away!!

![5](https://user-images.githubusercontent.com/94436222/141943083-0356bc86-147f-41a7-bfd3-3867f9096e8f.PNG)

We were able to reach these pages.

This page has the ability to upload files.
But (only txt format and must be uploaded compressing the txt file in zip format)

Let's use the functions on this page.

![6-1](https://user-images.githubusercontent.com/94436222/141943935-5f212f1f-d665-4468-909c-c27d46a5be2d.PNG)

![6-2](https://user-images.githubusercontent.com/94436222/141943979-1ac96362-aaad-496f-8017-05d351c90a62.PNG)

![6-3](https://user-images.githubusercontent.com/94436222/141944032-9af46574-9a60-4c49-9250-cf534cdf3389.PNG)

![6-4](https://user-images.githubusercontent.com/94436222/141944067-c2cfd121-b89b-4500-9d52-4cebe56353d8.PNG)

WoW nice work!!

Let's use this function to get a flag!!!

I thought this function would definitely have a problem distinguishing string. Let's try it!

![10](https://user-images.githubusercontent.com/94436222/141944496-8775a492-c8fa-42e0-9b5e-c371cc47334b.PNG)

It's my code

![6](https://user-images.githubusercontent.com/94436222/141945096-4b63db0d-56c6-4e6f-a53f-a2267650e6cd.PNG)

![7](https://user-images.githubusercontent.com/94436222/141945183-ccd15903-db66-4f7e-bf91-b9da2c85fcf9.PNG)

![8](https://user-images.githubusercontent.com/94436222/141945208-5c7d1366-76aa-439c-ba76-e198fdf9354b.PNG)

![9](https://user-images.githubusercontent.com/94436222/141945222-365b5054-dc21-4bc4-960d-b5b8d5dfc0a2.PNG)

![11](https://user-images.githubusercontent.com/94436222/141945231-9b9400db-5a05-4b62-a3c2-0c98ee3e4a36.PNG)

Nice! Flag is INTENT{zipfiles_are_awsome_for_pt}!!

Original writeup (https://github.com/younghoon8561/CTF-2021/blob/main/Intent%20CTF%202021/Careers.md).