webmedium

Fragment JSON

spbctf

Task: Web payment application with JSON structure where user input in comment field is not escaped. Solution: JSON fragment injection to create additional payment object with forged sender field.

$ ls tags/ techniques/

json injection payment_bypass fragment_injection

payment_forgeryjson_fragment_injection

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

🔒

Permission denied (requires tier.pro)

Sign in to access full writeups

Create a free account with GitHub, then upgrade to Pro.

$ssh [email protected]