// HARDWARE · ORIGINAL TRAINING CHALLENGE

Firmware Echo

Read a simulated UART boot trace and locate the diagnostic marker.

Medium350 PTSOFFLINE EVIDENCE

// MISSION

Investigate the evidence

Read a simulated UART boot trace and locate the diagnostic marker.

Recover the marker and submit it using the format SG{marker}.

Self-contained synthetic artifacts only. No live targets, services, devices, or external systems.

// FLAG CHECK

$ specter open firmware-echo
[+] evidence ready
[+] local practice mode

TRAINING FLAG

Progress stored in this browser.

// EVIDENCE

[BOOT] board=SG-DEV-01\n[UART] baud=115200\n[WARN] debug console enabled\n[DIAG] marker=serial_speaks_first\n[BOOT] application ready

HINT 01

Look at the diagnostic line, not the boot status.