P1flyingring < Newest — 2025 >

The "flying" part of its name is not metaphorical. The cross-section of a p1flyingring is often airfoil-shaped—asymmetrical, with a tapered trailing edge. When spinning, this profile creates a small but measurable downforce or stabilizing vacuum, depending on orientation. In drone motor bells, this reduces turbulence and audible whine by nearly 15% compared to flat rings.

The EEPROM data at 0x0001f000 is initialized to all 0xFF in the provided binary. Therefore the custom hash fails, and the default key deadbeef is used. Sending FLAG_deadbeef over UART prints the flag. p1flyingring

However, the intended solution (to mimic a real device) requires extracting the correct EEPROM values from a logic analyzer capture or from a hidden block in the LZMA section. The "flying" part of its name is not metaphorical

Running file on the binary reveals:

p1flyingring.bin: data

No standard headers (ELF, raw binary). binwalk shows: No standard headers (ELF, raw binary)

DECIMAL       HEXADECIMAL     DESCRIPTION
0             0x0             ARM executable code, 32-bit little endian
2048          0x800           CRC32 polynomial table
4096          0x1000          LZMA compressed data

The binary appears to be a raw firmware image for an ARM Cortex-M0 (or M3) microcontroller, commonly found in “flying ring” toys or DIY magnetic levitation kits.