不同工具采集到的蓝牙日志不一致，缺乏测试环境

可行性分析

开发流程

  1. 解析数据包-python
  2. 提取数据包中的uuid与value-python
  3. 搜索设备，连接设备，写入value-gattool

开发

解析数据包

字段名 值 起始地址-结束地址 字段含义
Send Write Request Flag 0x13 [8] Send Write Request 从ble发送的数据
Rcvd Read 0x11 [8] Ecvd Read 手机接受的数据
Read By Type Response 0x09 [27] Read By Type Response 读取Handle与UUID映射的特征字段
Length [28] Length 每一组数据的长度
Opcode 0x12 [27] Write Request 是否是写请求
Handle [28:30]
UUID Handle对UUID的映射
Value [30:-3] Vale

同一位置，不同数据包的字段含义不一样

通过Handle定位UUID

读取数据包的[8]的0x11（手机接受的数据），判断[27]是否是读取Handle与UUID映射的特征字段

每[28]为单位划分为一组，除[28]取有多少组UUID

判断UUID是否具有写属性

存储到UUIDS字典

# store uuid
UUIDS = {}

# read ble packets
def get_uuids(ble_filename):
    # read file
    pkts = rdpcap(ble_filename)
    for packet in pkts:
        p = packet.load
        # find uuid by handle
        if p[8] == 0x11 and p[27] == 0x09:
            data_length = p[28]
            Handles = p[29:-3]
            chunks = [Handles[i:i+7] for i in range(0, len(Handles), 7)]
            # write character
            for chunk in chunks:
                if chunk[2] & 0x08:
                    key = str(chunk[3:5][::-1]).replace('\\\\x', '').replace("'", '').replace('b', '')
                    value = str(chunk[5:][::-1]).replace('\\\\x', '').replace("'", '').replace('b', '')
                    UUIDS = {key: value}