RFlag

We have found the garage where some cyber criminals have all their stuff. Using an SDR device, we captured the signal from the remote key that opens the garage. Can you help us to analyze it?

Steps

1. Unzip the file w password hackthebox (given) and CD into the hardware_rflag directory
2. Basic info about the signal file

└─$ file signal.cf32
signal.cf32: Adobe Photoshop Color swatch, version 0, 49212 colors; 1st RGB space (0), w 0xc0bc, x 0, y 0x803c, z 0; 2nd space (32956), w 0, x 0xc03c, y 0, z 0xc0bc

3. After looking up how to analyze .cf32 files, I found the tool rtl_433
4. I installed it with sudo apt-get install rtl-433 and ran rtl_433 -A signal.cf32
5. This was at the bottom of the output

[00] {256} 2a aa aa aa 0c 4e 48 54 42 7b 52 46 5f 48 34 63 6b 31 6e 36 5f 31 73 5f 63 30 30 6c 21 21 21 7d

6. This is hex code, so I just decoded it to get the flag HTB{RF_H4ck1n6_1s_XXXXXXX}