Initialize the FirmWire virtual emulator environment. This platform sets up a QEMU-based memory container that models the baseband peripheral components, enabling you to boot the baseband OS without physical modems or radio transceiver hardware. The script parses the firmware header configuration to configure virtual registers and map peripherals correctly in the address space.
Start the dynamic baseband fuzzer. FirmWire exposes specific parser routines (such as GSM/LTE Radio Resource Control and Non-Access Stratum decoders) and injects fuzzed protocol frames into the emulated baseband interface, looking for memory access violations. The fuzzer automatically logs state variables and execution paths to detect crashes. To capture real-world diagnostic frames from a physical Qualcomm device for reference, use QCSuper.
Monitor baseband health and capture crash logs. The emulation framework tracks register states and logs stack traces whenever a crash (such as a buffer overflow) occurs, allowing security researchers to trace root causes in baseband code. Captured crash logs are saved for debugging in formats compatible with IDA Pro or Ghidra.
FirmWire operates entirely within a QEMU emulation environment — no RF signals are emitted and no live cellular networks are accessed, making it exempt from radio frequency emission regulations. However, the Samsung Shannon and MediaTek firmware images FirmWire loads are proprietary intellectual property. Ensure you possess the legal right to decompile and analyze the firmware blobs under your jurisdiction's security research provisions (e.g., DMCA §1201(j) in the US or equivalent national statute).
If your fuzzing campaigns identify exploitable memory safety vulnerabilities in emulated baseband firmware — such as buffer overflows or type confusion in RRC/NAS message parsers — follow the Coordinated Vulnerability Disclosure (CVD) framework: report findings privately to the modem manufacturer (Samsung, MediaTek) with a minimum 90-day disclosure window before publishing technical details or proof-of-concept exploit code.
You've executed the basic steps for FirmWire. The TelcoSec Academy offers full hands-on simulation labs, baseband source code auditing, and deep cellular signal processing certification courses.