Using deeplink to solve all the part, i also use Intent Launcher. Login to marten account, trying to proccess the May bugbounty payment, but it was require an 2FA, the send challenge request was look like this. Contribute to manoelt/50M_CTF_Writeup development by creating an account on GitHub. h1-212 CTF Writeup. Work fast with our official CLI. by Abdillah Muhamad — on hackerone 01 Jun 2020. December 17, 2017 December 17, 2017 aadityapurani 6 Comments. Winners will get an all expenses paid trip to New York City to hack against HackerOne 1337 and a chance to earn up to $100,000 in bounties. 2020-06-05 GraphQL and Apollo with Android From Novice to Expert 2020-06-05 Java On Azure Building Spring Boot Microservices 2020-06-05 Raising The Bar Again For Azure Sql Database With Centrally Managed Encryption. H1-2006 CTF Write-up HackerOne recently held a CTF with the objective to hack a fictitious bounty payout application. Hacker101 CTF is part of HackerOne free online training program. I was using Hackvector to view the cookie as plain text and send it as base64 this plugin is very handy, it was possible to make the backend send the request to another location. License. also there is an open redirect on the api https://api.bountypay.h1ctf.com/redirect?url=https://www.google.com/search?q=REST+API, this endpoint only able to redirect to whitelisted domain, i was spent tons of hours to bypass but actually we don’t need to bypass it, By combining the open redirect to the proxy request at account_id we can turn this into SSRF, Long story short https://staff.bountypay.h1ctf.com and https://software.bountypay.h1ctf.com is whitelisted into the redirect and i tried to access the https://software.bountypay.h1ctf.com with the proxy give me an login page with title Software Storage, this below the full request and response. https://github.com/bounty-pay-code/request-logger, https://app.bountypay.h1ctf.com/bp_web_trace.log, https://twitter.com/SandraA76708114/status/1258693001964068864, CWE-538: Insertion of Sensitive Information into Externally-Accessible File or Directory, CWE-918: Server-Side Request Forgery (SSRF), CWE-601: URL Redirection to Untrusted Site (‘Open Redirect’), CWE-73: External Control of File Name or Path, Directory bruteforce app.bountypay.h1ctf.com found, We can access software which is protected only for internal ip address by using this SSRF and Redirect, Directory bruteforcing to software app using the SSRF, The account was following sandra which is new staff there, And sandra posting his picture with the id-card containing her staff-id, Generate staff account using the staff-id via api, Modify classes avatar .upgradeToAdmin .tab4, Extract 2FA using CSS Injection,setup your callback and use this. August 24, 2019 February 19, 2020 Nihith. 1 PPP (Partai Persatuan Pwning) Writeup Capture The Flag SlashRoot CTF 2. Can you retrieve the document before he does? JOIN THE HACKER ONE Community :: https://www.hacker101.com/ 0x01 CTF We look forward to sharing our next CTF with you! The information leaked from the APK could be used for the next step, the goal from this apk to getting the value of X-Token to be able hit the api.bountypay.h1ctf.com directly. Homepage. His Pwnie Island CTF series is my favourite; the challenges are super interesting and his explanations are easy to understand, even if you know nothing but about underlying concepts. Hacker101 CTF is part of HackerOne free online training program. Hey guys in this video I showed how to complete the first TRIVIA CTF. $50 Million CTF from Hackerone - Writeup. Pcap forensics ctf Find New Homes for sale in Sacramento, CA. Haythem Elmir 3 ans ago. I classified this vulnerability with CWE-538: Insertion of Sensitive Information into Externally-Accessible File or Directory. Given an web application with wildcard scope *.bountyapp.h1ctf.com, as stated at @Hacker0x01 Twitter the goal of the CTF is to help @martenmickos to approve May Bug Bounty payments. There's also the riscure Embedded Hardware CTF series, and he has a bunch of individual CTF writeup videos as well. Sep 6, 2016 • ctf. As an avid CTF'er, I was very much excited when I heard about the H1-212 CTF. I know, you are here to read the write-ups for the Hackerone CTF (h1-702) which is an online jeopardy CTF conducted by the amazing team of Hackerone. Use Git or checkout with SVN using the web URL. If you have any questions or feedback, please email us at h1-212@hackerone.com. Really a good place to apply all the pen test skills for beginners. Generate the md5 hash using cli with echo -n 1 |md5sum will return c4ca4238a0b923820dcc509a6f75849b and we can use this to bypass the 2FA username=brian.oliver&password=V7h0inzX&challenge=c4ca4238a0b923820dcc509a6f75849b&challenge_answer=1. Non-Governmental Organization (NGO) suivez la progression de vos équipes. H1–212 CTF Writeup This blog post is a writeup of the CTF published by HackerOne to select top three hackers for the h1–212 event held at NYC on December 9, 2017. I always perform subdomain enumeration when it comes into wildcard targets and crt.sh always give most of the result. HackerOne’s mission is to empower the world to build a safer internet, and you are the heroic individuals making that mission a day-to-day reality. Vulnerability exist inside Select a book functionality. open the third activity with this deeplink three://part?three=UGFydFRocmVlQWN0aXZpdHk=&switch=b24=&header=X-Token the application will put the Token to shared_preferences/user_created.xml file and on the debug log, grab the leaked hash from this file shared_preferences/user_created.xml (8e9998ee3137ca9ade8f372739f062c1) and submitted to PartThreeActivity, from the debug log we can see that the Host is api.bountypay.h1ctf.com used X-Token:8e9998ee3137ca9ade8f372739f062c1 to hit api.bountypay.h1ctf.com/ endpoints was valid. So on choosing/making … Introduction: Hello Reviewers, and fellow cybersecurity enthusiasts. Really a good place to apply all the pen test skills for beginners. this mindset help me to keep motivated when encounter a dead end. Find out who won and read their solution write-ups in this post. Hacker101 is a free educational site for hackers, run by HackerOne. 0x01 CTF. If nothing happens, download GitHub Desktop and try again. first i thought the code was like to trigger the admin execute the upgrade user, but turns out that profile and avatar is cannot broken into an xss as it only accepts [A-Za-z0-9]. We are still collecting H1-212 CTF write ups. Our h1-202 CTF attracted 450 participants and we chose three winners that will be sent to Washington, DC for our live-hacking event, h1-202! HackerOne h1-212 CTF Write-Up/Solution. If you are a ethical hacker (Good Guys) and have not used Hackerone platform for Bug Bounty yet, do ... Read More InCTF 2017 Writeup. Opening the application will prompt you to input username and (optional) twitter, after you submit it will bring you to PartOneActivity but have nothing visible on the User Interface, it because this part of code haven’t executed yet. thingking of Software Storage the words of backup files always come into my mind and i tried to bruteforce the folder using the proxy and found there is an /upload folder containing BountyPay.apk which is the next challenges https://software.bountypay.h1ctf.com/uploads/BountyPay.apk. Greetings ! 274. Shout out to the problem setter @adamtlangley and @B3nac Thanks for making awesome CTF Challenge, also @Hacker0x01 for Organizing the CTF, This was a great learning experience from solving the challenge. by Abdillah Muhamad — on hackerone 01 Jun 2020. The Hacker101 CTF is a game designed to let you learn to hack in a safe, rewarding environment. Always keep the mindset The bug is there, its just the matter of time to found the bug, if you don't others will found it. Hacker101 CTF Writeup. I was bruteforcing the api.bountypay.h1ctf.com endpoints using the valid X-Token that we got from android application was found an endpoint api.bountypay.h1ctf.com/api/staff which have POST and GET routes as REST API and the GET endpoint was returning the staff_id&name that already have an account, but the POST method was expecting staff_id parameter to generate new account to staff that haven’t generate account, and i was found an twitter account @BountyPayHQ which is mentioned by @Hacker0x01, the @BountyPayHQ is mentioning that they have a new team member which is Sandra Allison in her twitter she uploaded an picture with the staff_id exposed. The hacker101 CTF is part of HackerOne free online training program safe, rewarding environment HackerOne. 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