Export a Postman collection to OpenAPI 3.I have a problem with exporting a collection from postman.Extract email addresses from a large JSON file October 19, 2022.What is a JWT – JSON Web Token? October 30, 2022.Hacking a JWT – JSON Web Token (part 1) November 10, 2022.Hacking a JWT – JSON Web Token (part 2) November 13, 2022.Using an Android emulator for API hacking December 22, 2022.Basic or extended regex? January 3, 2023.Getting started with regex January 4, 2023.Proxy Postman into Burp Suite May 3, 2023.Discover API endpoints with Feroxbuster May 8, 2023.What is BOLA – Broken Object Level Authorization? July 12, 2023.What are GraphQL types? September 15, 2023.What is the GraphQL schema? September 18, 2023.GraphQL queries, mutations and subscriptions September 26, 2023.You can then review each request individually. To check the documentation you just created, start your browser, open Swagger Editor, then open your yaml file with File > Import file. (Assuming filename.json is the name of your file). Postman2openapi filename.json > filename.yaml Navigate to where your Postman collection export is located and run: Then move the postman2openapi app one step up so it’s directly in /usr/local/bin. Move the file you just downloaded into /usr/local/bin and unzip it using: To do this, you will use postman2openapi, that you can download here. You now need to convert this file into yaml format. Now right-clic on the collection you want to convert and select Export.Įxport in Collection v2.1 format. Well, if you are working in a team, with your teammates maybe using different sets of tools, you will need to distribute a documentation that everyone can use the way they want, in a format that everyone is comfortable with.Īlso, like myself, you may prefer to review your documentation in a tool such as Swagger Editor that provides just the right interface to do this.Īnd also, you may want to search through you target API’s requests using a tool such as gron (more on this one in a later post). I then filter out the unnecessary requests and build my own collection in Postman, ready for me to investigate each request individually.Īll this is good, but if you want to take things further, you may also want to generate an OpenAPI 3.0 documentation for your target API’s collection you just created in Postman. You will see the corresponding requests populate the request window in Postman as you go. I then explore the target web application in Firefox, visiting all the pages and trying out all the features (create/modify user accounts, add pictures, download files, upload files, etc). I also start the proxy in Postman to capture the incoming traffic. To do this, I set up Firefox to proxy its traffic into Postman (using a tool such as FoxyProxy). If this remains a valid workflow, I prefer to actually build a collection directly in Postman. The point is to have a documentation file that you can then import into Postman as a collection and then start testing the target API for vulnerabilities. In this previous post, I showed you how you can create your own API documentation, compliant with the OpenAPI 3.0 specifications, using Firefox and mitmproxy2swagger. This post is a follow up to my earlier Build an OpenAPI 3.0 documentation file post.
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