Comments (27)
JonnyTech
commented on June 20, 2024
1
File attached: WIFI.txt - removed
I masked my mac address like so
printf '\x88\x88\x88\x88\x88\x88' | busybox dd of=WIFI bs=1 seek=$((0x04)) count=6 conv=notrunc
Note that I had to add .txt to the filename to allow Gihub to accept it.
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JonnyTech
commented on June 20, 2024
I found the mac address in a file if that helps (contents obscured for security):
root@porridge:/ # cd /sys/devices/soc/180f0000.wifi/net/wlan0
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 # ls -la
total 0
drwxr-xr-x 6 root root 0 2016-11-22 18:55 .
drwxr-xr-x 4 root root 0 2016-11-22 18:55 ..
-r--r--r-- 1 root root 4096 2016-11-22 19:07 addr_assign_type
-r--r--r-- 1 root root 4096 2016-11-22 19:07 addr_len
-r--r--r-- 1 root root 4096 2016-11-22 18:55 address
-r--r--r-- 1 root root 4096 2016-11-22 19:07 broadcast
-rw-r--r-- 1 root root 4096 2016-11-22 19:07 carrier
-r--r--r-- 1 root root 4096 2016-11-22 19:07 carrier_changes
-r--r--r-- 1 root root 4096 2016-11-22 19:07 dev_id
-r--r--r-- 1 root root 4096 2016-11-22 19:07 dev_port
lrwxrwxrwx 1 root root 0 2016-11-22 19:07 device -> ../../../180f0000.wifi
-r--r--r-- 1 root root 4096 2016-11-22 19:07 dormant
-r--r--r-- 1 root root 4096 2016-11-22 19:07 duplex
-rw-r--r-- 1 root root 4096 2016-11-22 18:55 flags
-rw-r--r-- 1 root root 4096 2016-11-22 19:07 ifalias
-r--r--r-- 1 root root 4096 2016-11-22 18:55 ifindex
-r--r--r-- 1 root root 4096 2016-11-22 19:07 iflink
-r--r--r-- 1 root root 4096 2016-11-22 19:07 link_mode
-rw-r--r-- 1 root root 4096 2016-11-22 19:07 mtu
-r--r--r-- 1 root root 4096 2016-11-22 19:07 name_assign_type
-rw-r--r-- 1 root root 4096 2016-11-22 19:07 netdev_group
-r--r--r-- 1 root root 4096 2016-11-22 19:07 operstate
lrwxrwxrwx 1 root root 0 2016-11-22 19:07 phy80211 -> ../../../../virtual/ieee80211/phy0
-r--r--r-- 1 root root 4096 2016-11-22 19:07 phys_port_id
drwxr-xr-x 2 root root 0 2016-11-22 19:07 power
drwxr-xr-x 10 root root 0 2016-11-22 18:55 queues
-r--r--r-- 1 root root 4096 2016-11-22 19:07 speed
drwxr-xr-x 2 root root 0 2016-11-22 19:07 statistics
lrwxrwxrwx 1 root root 0 2016-11-22 19:07 subsystem -> ../../../../../class/net
-rw-r--r-- 1 root root 4096 2016-11-22 19:07 tx_queue_len
-r--r--r-- 1 root root 4096 2016-11-22 19:07 type
-rw-r--r-- 1 root root 4096 2016-11-22 19:07 uevent
drwxr-xr-x 2 root root 0 2016-11-22 19:07 wireless
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 # cat address
00:11:22:33:44:55
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 #
So I tried to change the contents but it did not seem to work:
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 # chmod 644 address
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 # ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:11:22:33:44:55
UP BROADCAST MULTICAST MTU:1500 Metric:1
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 # ifconfig wlan0 down
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 # echo "00:11:22:33:44:FF" > address
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 # ifconfig wlan0 up
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 # ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:11:22:33:44:55
UP BROADCAST MULTICAST MTU:1500 Metric:1
root@porridge:/sys/devices/soc/180f0000.wifi/net/wlan0 #
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ViRb3
commented on June 20, 2024
Great job so far! However, I am pretty sure that the MAC file won't be located in /sys. Look for it in /persist, /vendor, /system /dev (?), /oem (?), etc. If you find the right file, changing its content should have a result. Also try using airplane mode instead of "ifconfig wlan0 up/down".
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JonnyTech
commented on June 20, 2024
Would it be named as anything else, as I said:
Using 'find / -type f -iname mac' only shows stuff in /proc/
File listings show no "mac" files:
root@porridge:/ # ls -laR /persist/
/persist/:
total 0
drwxrwx--x 2 system system 0 2016-11-23 12:48 .
drwxr-xr-x 20 root root 0 2016-11-23 12:48 ..
root@porridge:/ # ls -laR /vendor/
/vendor/:
total 32
drwxr-xr-x 4 root shell 4096 2009-01-01 08:00 .
drwxr-xr-x 18 root root 4096 1970-01-01 01:00 ..
drwxr-xr-x 4 root shell 4096 2009-01-01 08:00 lib
drwxr-xr-x 3 root shell 4096 2009-01-01 08:00 lib64
/vendor/lib:
total 33176
drwxr-xr-x 4 root shell 4096 2009-01-01 08:00 .
drwxr-xr-x 4 root shell 4096 2009-01-01 08:00 ..
drwxr-xr-x 2 root shell 4096 2009-01-01 08:00 drm
-rw-r--r-- 1 root root 2467280 2009-01-01 08:00 libWVStreamControlAPI_L3.so
-rw-r--r-- 1 root root 11304948 2009-01-01 08:00 libavcodec.so
-rw-r--r-- 1 root root 1833840 2009-01-01 08:00 libavformat.so
-rw-r--r-- 1 root root 419472 2009-01-01 08:00 libavutil.so
-rw-r--r-- 1 root root 55120 2009-01-01 08:00 libffmpeg_extractor.so
-rw-r--r-- 1 root root 54912 2009-01-01 08:00 libffmpeg_omx.so
-rw-r--r-- 1 root root 34384 2009-01-01 08:00 libffmpeg_utils.so
-rw-r--r-- 1 root root 116300 2009-01-01 08:00 libswresample.so
-rw-r--r-- 1 root root 517704 2009-01-01 08:00 libswscale.so
-rw-r--r-- 1 root root 87524 2009-01-01 08:00 libwvdrm_L3.so
-rw-r--r-- 1 root root 54896 2009-01-01 08:00 libwvm.so
drwxr-xr-x 2 root shell 4096 2009-01-01 08:00 mediadrm
/vendor/lib/drm:
total 136
drwxr-xr-x 2 root shell 4096 2009-01-01 08:00 .
drwxr-xr-x 4 root shell 4096 2009-01-01 08:00 ..
-rw-r--r-- 1 root root 59008 2009-01-01 08:00 libdrmwvmplugin.so
/vendor/lib/mediadrm:
total 2952
drwxr-xr-x 2 root shell 4096 2009-01-01 08:00 .
drwxr-xr-x 4 root shell 4096 2009-01-01 08:00 ..
-rw-r--r-- 1 root root 38584 2009-01-01 08:00 libdrmclearkeyplugin.so
-rw-r--r-- 1 root root 1460180 2009-01-01 08:00 libwvdrmengine.so
/vendor/lib64:
total 29480
drwxr-xr-x 3 root shell 4096 2009-01-01 08:00 .
drwxr-xr-x 4 root shell 4096 2009-01-01 08:00 ..
-rw-r--r-- 1 root root 11846016 2009-01-01 08:00 libavcodec.so
-rw-r--r-- 1 root root 2022744 2009-01-01 08:00 libavformat.so
-rw-r--r-- 1 root root 415576 2009-01-01 08:00 libavutil.so
-rw-r--r-- 1 root root 67776 2009-01-01 08:00 libffmpeg_extractor.so
-rw-r--r-- 1 root root 67392 2009-01-01 08:00 libffmpeg_omx.so
-rw-r--r-- 1 root root 42816 2009-01-01 08:00 libffmpeg_utils.so
-rw-r--r-- 1 root root 91968 2009-01-01 08:00 libswresample.so
-rw-r--r-- 1 root root 509752 2009-01-01 08:00 libswscale.so
drwxr-xr-x 2 root shell 4096 2009-01-01 08:00 mediadrm
/vendor/lib64/mediadrm:
total 120
drwxr-xr-x 2 root shell 4096 2009-01-01 08:00 .
drwxr-xr-x 3 root shell 4096 2009-01-01 08:00 ..
-rw-r--r-- 1 root root 51088 2009-01-01 08:00 libdrmclearkeyplugin.so
root@porridge:/ # ls -laR /oem/
/oem/:
total 0
drwxr-xr-x 2 root root 0 1970-01-01 01:00 .
drwxr-xr-x 20 root root 0 2016-11-23 12:48 ..
root@porridge:/ # ls -laR /system/dev/
ls: /system/dev/: No such file or directory
Do you have it working on any other phones running CM13?
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ViRb3
commented on June 20, 2024
(Check EDIT2 before trying the other things I suggested)
Keep in mind that there are a number of ways to store a MAC address, including:
- different separation characters (" ", ":", "-", etc.)
- storing the whole mac address as hex instead of ascii that contains the hex digits (see Samsung layout)
Also the file's name doesn't necessarily contain the word "mac", for an example the OnePlus One stores it under "/persist/WCNSS_qcom_cfg.ini". You can try searching for "wifi", though.
Regarding CM13, I have neither tested it nor received any feedback that it works. In fact, a few other people had trouble finding their MAC on CM13 as well, even on different devices. It could very well be a different implementation that the CM team are using. Sadly I won't be able to find time to flash CM13 any time soon. Have you tried doing a linux-style MAC change: "ifconfig wlan0 hw ether {mac}"?
Last thing I can think of: Perform a "clean" change in the file you have found.
- Turn on airplane mode.
- Change one of the last digits (to avoid OUI issues).
- Enable airplane mode and/or restart phone.
What happens in that scenario?
EDIT: I just checked that your device uses a MediaTek chip. I will investigate a little since I haven't worked with this chip yet.
EDIT2: Do you have any part of this directory: "/data/nvram/APCFG/APRDEB/"?
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JonnyTech
commented on June 20, 2024
I will try - what is the best way to find out if the address has actually changed?
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JonnyTech
commented on June 20, 2024
Have you tried doing a linux-style MAC change: "ifconfig wlan0 hw ether {mac}"?
root@porridge:/ # ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:xx:xx:xx:xx:xx
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 TX bytes:0
root@porridge:/ # ifconfig wlan0 hw ether 00:11:22:33:44:55
ifconfig: ioctl 8924: Operation not supported on transport endpoint
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ViRb3
commented on June 20, 2024
Did you see if the directory in EDIT2 exists on your device?
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JonnyTech
commented on June 20, 2024
Sorry for the very long delay in replying
/data/nvram is a symbolic link to /nvdata
Looking there I found /nvdata/APCFG/APRDEB/WIFI
Examining the contents of that file with a hex editor revealed my Wi-Fi mac address at bytes 5 to 10 (6 bytes total)
I hope that helps, what shall I try next?
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ViRb3
commented on June 20, 2024
No worries, apologies on my end as well. Can you please upload the file here or send it to me via Gitter: https://gitter.im/nMACAndroid/?
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ViRb3
commented on June 20, 2024
Thank you! One last thing before I add support for it, can you please confirm that changing the MAC in the file actually changes your MAC?
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JonnyTech
commented on June 20, 2024
It does indeed:
# ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 88:88:88:88:88:88
inet addr:192.168.0.19 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::8a88:88ff:fe88:8888/64 Scope: Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:256 errors:0 dropped:0 overruns:0 frame:0
TX packets:278 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:111320 TX bytes:47194
Good luck!
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ViRb3
commented on June 20, 2024
I hope I didn't mess anything up this late in the evening. You will have to uninstall the old version first, since I lost my original sign keys & also this is a test build. Please report back when you test it!
virb3e.nMAC.Test.apk.zip
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JonnyTech
commented on June 20, 2024
Looks like something is amiss, are any logs generated in order to assist?
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ViRb3
commented on June 20, 2024
I knew I had forgotten something, sorry about that. Try this one:
virb3e.nMAC.Test2.apk.zip
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JonnyTech
commented on June 20, 2024
This one runs, then asks to backup current binary, then crashes.
Opening up again it starts up and crashes at getting current MAC address.
Even if I force stop and clear app data, it still crashes at getting current MAC address.
Can I try anything else?
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ViRb3
commented on June 20, 2024
I just re-checked the code and simulated it using the file you sent me -- everything worked fine. I pushed the newest changes, so could you please take a look if you see something wrong?
https://github.com/ViRb3/nMAC/blob/master/nMAC/Devices/WileyfoxSpark.cs
If you have Xamarin set up or if you feel like installing it, feel free to build and debug the app -- this will most definitely show you the issue.
I'll be away for the next few days, but we'll continue this after I am back 😄
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JonnyTech
commented on June 20, 2024
Thanks, I shall try to make sense of it at the weekend. Having never built an Android app, can you provide a quick how-to? I am a Linux user and can hack away at most things given some guidance.
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ViRb3
commented on June 20, 2024
After a quick research it seems like Xamarin isn't officially supported on Linux (yet). Here's a guide to build Xamarin apps under Linux, but I see no way to debug them. If you don't find a solution you might have to run Windows under a VM. You can then just install Visual Studio Community, check Xamarin to be included during installation, and finally open this project's .sln file. Good luck!
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JonnyTech
commented on June 20, 2024
Thanks - I do not have Widows so persevered with Linux - what a tedious process that was!
OK, the problem lies with SetMACViews() in MainActivity.cs. If I comment out the line MACArray[u++] = @byte; then the error disappears. I shall investigate further when I have more time.
PS, I noticed that sometimes the MAC address does not change, does the value have to be a particular format?
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JonnyTech
commented on June 20, 2024
Well, I could not sleep until I worked it out:
The MAC address was received in the format XX-XX-XX-XX-XX-XX (yes, dashes in the string).
The fix in my case was to add i++ at the end of the else block of the 2nd digit concatenation:
See my PR for details. You will probably find a more elegant solution, but I hope this helps.
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JonnyTech
commented on June 20, 2024
I noticed that the RANDOMIZE function is also broken because of the non-hex characters. I am updating my PR to use IsHexDigit. This seems to work in all cases.
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ViRb3
commented on June 20, 2024
Hey again, thanks so much for testing! The problem was the device model should have returned a MAC without dashes, but I forgot to trim them, so bad things happened. This has been fixed now. Can I ask you about the purpose of changing the hostname? It's been implemented in the test version as well, but I want to know for sure before releasing it.
All being said, here's a test that should hopefully work:
virb3e.nMAC.Test3.zip
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JonnyTech
commented on June 20, 2024
Welcome back, hope you had a good time. The latest build works perfectly - many thanks. I enjoyed testing and learning. The host name change was because a network that I tested blocked me after some time and only changing both MAC and name allowed me to reconnect. Plus I liked the challenge of doing it! Maybe have it as an option as it does not survive a reboot.
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ViRb3
commented on June 20, 2024
Thanks for the explanation! I have implemented hostname changing in the MAC changing sequence. An official release will be out in a few minutes.
One last time, thanks for all the help. I can now smilingly close this issue :)
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JonnyTech
commented on June 20, 2024
The new release also works flawlessly - many thanks to you for your patience and efforts. Hopefully this change adds compatibility for other devices too. Big smiley too :D
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almazov159
commented on June 20, 2024
Hi! Can you help me? My device Alcatel 1T 7" wi-fi (android 8.1.0).
I found the file WIFI in the following path: /vendor/nvdata/APCFG/APRDEB
Examining the contents of that file with a hex editor revealed my Wi-Fi mac address at bytes 5 to 10 (6 bytes total).
Can you make changes to your program to make it work on my device?
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