Hi everyone It’s been a while from my last post but I’m back , I want to tell you a love story about Yahoo! bug bounty program that is very great because I learned a lot of lessons, so I got into Yahoo! Security Hall of Fame (2018) via Hackerone, so here we go: Report Summary (first try): […]

Hi everyone It’s been a while from my last post but I’m back , I want to tell you a short story about Telegram/Whatsapp bug bounty that is very great because this was my first Bitcoin bug bounty payment: [Note] the vulnerability was extacly the same so [It was accepted by Telegram but marked as […]

Hi everyone, this is very special to me, is the report for my first bug bounty ever! in 2017, so far I’ve found another bugs in platforms like Facebook and Nokia, but this one will always be my favorite because was the 1st one, so I got into Twitter Security Hall of Fame (2017) via […]

Hi everyone this is a write up about how do I got into Nokia security Program Hall of Fame , so here we go: Note: this bug have been reported in about 10 companies and only Nokia accepted as a valid report Do you think that internal IP disclosure is a security flaw? share your […]

Hi everyone FINALLY I get into Facebook Whitehat Program Hall of Fame After 5 tries, this is my 2nd bug bounty and my very first write up, so here we go: Vulnerability Scope: Main Site (www.facebook.com) Status: Mitigated Title: “Getting access to prompt debug dialog and serialized tool on main website facebook.com” Product / URL: […]

Hi everyone, this is another Facebook Whitehat Report write up (Facebook marked the report as N/A, but some another programs accept this bug as a valid bug bounty,per ex. Twitter so this might be can be useful in some scenarios), well,  there you go: Title: Directory Listing Disclosure via .DS_Store file (macOS) Product / URL: […]

Hello , here is my write up for the CTF “Desafio ESET #36: Juego de escape criptográfico” (ESET Challenge # 36: Cryptographic escape game)     CTF: https://www.welivesecurity.com/la-es/2017/12/26/desafio-eset-36/ CTF Solution (official): https://www.welivesecurity.com/la-es/2018/01/12/solucion-desafio-eset-36/ Rules: 1.- download the desafio36.zip file (mirror) md5=2b7a11892638179573f7b17c4b74911a 2.- unzip the file 3.- start looking for clues and find the CTF flag. [disclaimer] if you […]

Hi welcome to my little space on Internet. This is just another security blog by me Omar Espino What is the blog about? Mainly Bug Bounties and CTF’s write ups and security stuff. If you have some comments or any doubts, just drop me a line on twitter. (@omespino)