Popping A Reverse Shell Using an Image File
HTB Bank Machine walkthrough. After enumerating valid credentials, I authenticated into the internal ticketing system and identified a file upload feature used for image attachments. Although server-side validation blocks common PHP extensions, the upload logic relies on superficial checks. By intercepting the request with Burp Repeater and prepending valid GIF magic bytes to a PHP webshell, I was able to bypass the filter and achieve remote code execution via a disguised image payload.
Want access to my pentesting notes for free? DM me the word 'roadmap' on my IG and I'll send them to you.
Visit https://nerdgigs.online for partnerships and business inquiries
Follow me on IG: / d3ndr1t30x
Get ProtonPass: https://go.getproton.me/SH24Y
Find your next tech job: https://nerdgigs.com
My blog: https://nerdgigs.blog
ByMeACoffee: buymeacoffee.com/d3dnr1t30x
My Online Store: https://d3ndr1t30x.gumroad.com/