The article details a hands‑on investigation of a web application firewall that strips SQL keywords, shows how order‑by and CASE‑WHEN payloads can be used to probe column limits, construct blind injection strings, and ultimately achieve data extraction despite multiple filtering layers.
ByPassTamperPlus is a Python‑based collection of SQLMap tamper scripts tailored for MSSQL, MySQL and Oracle across multiple versions, employing version‑specific syntax, functions and obfuscation techniques to improve payload survivability against modern Web Application Firewalls, while acknowledging inherent limitations.
The article introduces Cloud ProxyPool, a Go‑based distributed IP proxy pool built on Tencent Cloud Functions (SCF) that bypasses WAF IP restrictions, provides step‑by‑step deployment, client configuration, CA certificate installation, proxy settings, a monitoring dashboard, and outlines supported use cases such as crawler IP rotation, IP testing, HTTPS interception, and integration with tools like Burp Suite.
This step‑by‑step guide demonstrates how to enumerate a vulnerable host, identify and fingerprint its Web Application Firewall, apply multiple WAF‑bypass techniques—including fuzzing, command injection, binary abuse and URL‑encoding tricks—to obtain a stable shell, perform privilege escalation, decode a JWT token and finally retrieve the root flag.txt.
