Hi All,
I need your help regarding executing nanddump on Nexus One.
I achieved root access after booting unsecured boot image on the phone. I verified this root access by accessing /data/data directory on the phone. Also after executing adb shell i get # prompt instead of usual $ prompt.
I cross compiled MTD-UTILS for arm architecture using guide at http//elinux. org/CompilingMTD Utils.
I then transferred nanddump tool onto SD card and trying to execute in the adb shell but i keep getting error "permission denied". I then tried to do chmod 777 nanddump which passes out without any warning/errors. But the nanddump command still fails with permission denied error.
Can anyone help me out with this issue?
Regards,
Apurva R
Complete stab in the dark… But have you set execute permissions on the binary? Chmod +x filename
I did execute chmod 777 which means rwxrwxrwx permissions on the executable. This command passes out without warnings/errors. However the nanddumpstill fails.
sudo?
sudo and su binaries are not available on android platform (
I wonder if the issue is coming from running it from the SD card? But if you have root you should be able to do what the hell you want - that's the point right?
Is the "permission denied" coming from the shell (saying that you don't have permission to execute the file - although this shouldn't be the case), or is it an error message being passed out by nanddump?
Its the shell who is giving the error. Following is the screenshot.
cd /sdcard/mtdutils-arm
# ls
ls
bin2nand
docfdisk
doc_loadbios
flashcp
flash_erase
flash_info
flash_lock
flash_otp_dump
flash_otp_info
flash_unlock
ftl_check
ftl_format
mkbootenv
mkpfi
mtdinfo
mtd_debug
nand2bin
nanddump
nandtest
nandwrite
nftldump
nftl_format
pddcustomize
pfi2bin
pfiflash
rfddump
rfdformat
ubiattach
ubicrc32
ubicrc32.pl
ubidetach
ubiformat
ubigen
ubimirror
ubimkvol
ubinfo
ubinize
ubirename
ubirmvol
ubirsvol
ubiupdatevol
unubi
# ./nanddump
./nanddump
./nanddump permission denied
The binaries can be downloaded at http//
It would be a great help if someone else can verify if the binaries are compiled correctly or not.
I verified the ELF file signature by doing the cat. So i do not think that this is probably the case.
Andrew Hoog kindly replied to my email and suggested the following
Apurva,
Congrats on your progress so far. I suspect your issue is that Android went to great lengths to make sure the /sdcard has the “noexec” option set. I believe you can check with a simple “mount” command. The solution is to put the file somewhere on the file system where the “noexec” option is not set. With root, it’s practically anywhere but /sdcard. Hope this helps, let us know.
Andrew Hoog
Chief Investigative Officer
tel 312-878-1100
ahoog@viaforensics.com
However I am facing similar problem when I place it in /system/bin folder. (
I think your nanddump is dynamically linked program.
So, Try statically linking. D
Tad
