4 ms·

Do you happen to know other spec's on these or similar? (Eg, CPU type/speed, RAM etc)

• squarefoot 4y ago
  Not much info unfortunately. Some of them apparently use a HiSilicon (owned by Huawei) chipset; the following Alibaba page lists some of them among others. https://www.alibaba.com/countrysearch/CN/dvr-motherboard.html https://www.alibaba.com/countrysearch/CN/dvr-motherboard.htm... Here are a few pages I found that could turn out interesting: https://securitycamcenter.com/firmware-chinese-dvr-nvr-security-cameras-h264-h265/ https://securitycamcenter.com/firmware-chinese-dvr-nvr-secur... https://github.com/hisilicon https://github.com/hisilicon And as widely reported, they're quite vulnerable. https://github.com/tothi/pwn-hisilicon-dvr https://github.com/tothi/pwn-hisilicon-dvr https://www.exploit-db.com/exploits/44004 https://www.exploit-db.com/exploits/44004 I wonder if those vulnerabilities could be used to gain root access to the hardware in order to either patch it and make decent security devices, or repurpose them completely, as the hardware is interesting and dirt cheap.
  • detrites 4y ago
    Most interesting, thank you. These may have an ARM Cortex A7 dual-core at 1.3Ghz according to this datasheet for the HiSilicon hi3520dv400 (the 4 channel version): http://wangxunic.com/wp-content/uploads/2019/05/Hi3520DV400.pdf http://wangxunic.com/wp-content/uploads/2019/05/Hi3520DV400.... Not bad at all. And with DDR3.