Hey, amazing hackers. So I hacked Adobe, and here’s exactly how I did it. Let this be a lesson to the beginner bug bounty enthusiasts who are looking for good bugs. I'll tell you what you need to do to find bugs and where to find them.
INTRO: Beginner’s Nightmare
This was my first-month doing bug bounty hunting and if you don’t know it already I took up a 6 months challenge. I'm from a network penetration background so I basically sucked in the web apps. In my first month, I spent every day listening to all the good lectures by the bug crowd and reading a ton of books such as OWASP Testing guide. The theory is different from practical and I was basically lost. I decided to leave my pending work and focus deeply. I spent countless hours looking for bugs but everything was to no avail. I found some low-hanging fruits using tools but never reported them. Male Ego I guess. Then comes the light at the end of the tunnel.
I took up the challenge to hack adobe and yeah it was hella secure, everything was neatly wrapped under WAF and i was always getting blocked. I decided to focus to slight manipulation techniques such as IDORs so i started gathering every single parameter. How?
Gauplus, gauplus is basically Gau on drugs, its faster, more stable and easier to use.
Firstly I collected all the domains and using subdomain enumeration, from my previous blog, I sorted them into a text file adobe.txt Using gau i now collect every single parameter and endpoint, I like to exclude images and other stuff but you can add it.
cat adobe.txt | gauplus — subs -b png,jpg,gif,jpeg,swf,woff -o adobeurl.txt
Now I use my httpx to check which URLs are live, this is optional
cat adobeurl.txt | httpx -mc 200 >> finalurls.txt
Finally, we have a beautiful list of URLs with parameters to choose from.
I grep through various stuff such as id= and confidential, secret, employee but this time i went through a URL called document which is normally usual.
I visit the document URL, now I find a usual document, nothing interesting but then i looked at the URL, it had document/200, I changed that 200 to 201 but nothing happened so maybe no IDOR? I sent the request to burp>Intruder> use 100–1000 as payload set and fuzz the document/$200$, BOOM! here's the response. But now the question is, are the files really confidential? So turns out yes, not only documents but highly critical internal data is also leaked.
Reported it 3 months ago, it got a medium 5.3 severity and got fixed today so I'm extremely happy.
KEY POINTS: DIG THROUGH ALL PARAMETERS
Understand the application
LOOK FOR OUT-OF-THE-BOX SOLUTIONS.
PS: I don’t write to show off but to teach so no mentions of the bounty will be entertained. The motive of a learner is to learn and these days hackers are getting distracted. Keep shining. PEACE- RAVAAN