Uimage Firmware Header - Encrypted Hilink

hexdump -C firmware.bin | head -n 20 Look for strings like "HUAWEI" , "HiLink" , or "UPDATE" at offset > 0x1000 (they often appear after the encrypted header). Method A – Static key (older devices) Search U-Boot binary (extracted via JTAG or from a decrypted image):

This article explains what it is, how it works, and practical methods to decrypt and analyze it. A normal, unencrypted UImage header (64 bytes) looks like this: encrypted hilink uimage firmware header

| Offset | Size | Field | Example Value | |--------|------|---------------|-------------------| | 0x00 | 4 | ih_magic | 0x27051956 | | 0x04 | 4 | ih_hcrc | Checksum | | 0x08 | 4 | ih_time | Timestamp | | 0x0C | 4 | ih_size | Data size | | 0x10 | 4 | ih_load | Load address | | 0x14 | 4 | ih_ep | Entry point | | 0x18 | 4 | ih_dcrc | Data checksum | | 0x1C | 1 | ih_os | OS type | | 0x1D | 1 | ih_arch | Architecture | | 0x1E | 1 | ih_type | Image type | | 0x1F | 1 | ih_comp | Compression | | 0x20 | 16 | ih_name | Image name | hexdump -C firmware