How to convert AVRDUDE EEPROM copy to ASCII

Projects Programming
1

Hello i have been working on my masters and i have been able to read the EEPROM of a few IoT devices and i know it has my WiFi password in there somewhere, do not worry it a test password. It should be Password90, but the EEPROM file is not as easy to read as i hoped, how the hell do i convert it back to ASCII i can not even find a string in a test i did with my Uno, both files are the same format, the Uno's is just smaller.

Can anyone tell me how i convert this file back to ASCII, please?

:200000000C945C000C946E000C946E000C946E000C946E000C946E000C946E000C946E0082
:200020000C946E000C946E000C946E000C946E000C946E000C946E000C946E000C946E0050
:200040000C9470000C946E000C946E000C946E000C946E000C946E000C946E000C946E002E
:200060000C946E000C946E0000000000240027002A0000000000250028002B000404040467
:200080000404040402020202020203030303030301020408102040800102040810200102F1
:2000A00004081020000000080002010000030407000000000000000011241FBECFEFD8E063
:2000C000DEBFCDBF21E0A0E0B1E001C01D92AF30B207E1F70E94BA000C94AB010C940000BD
:2000E0001F920F920FB60F9211242F933F938F939F93AF93BF9380910B0190910C01A0911B
:200100000D01B0910E0130910A0123E0230F2D3720F40196A11DB11D05C026E8230F029648
:20012000A11DB11D20930A0180930B0190930C01A0930D01B0930E01809106019091070152
:20014000A0910801B09109010196A11DB11D8093060190930701A0930801B0930901BF91D9
:20016000AF919F918F913F912F910F900FBE0F901F901895789484B5826084BD84B5816076
:2001800084BD85B5826085BD85B5816085BD80916E00816080936E001092810080918100CD
:2001A00082608093810080918100816080938100809180008160809380008091B100846017
:2001C0008093B1008091B00081608093B00080917A00846080937A0080917A00826080937A
:2001E0007A0080917A00816080937A0080917A00806880937A001092C100CDE9D0E0FE01C4
:20020000249109E810E0F8018491882399F090E0880F991FFC01E859FF4FA591B491FC0143
:20022000EE58FF4F859194919FB7F8948C91822B8C939FBF91EBE92E90E0F92E20E0C22EAC
:2002400020E0D22EAA24A394B12C2FB7F89480910B0190910C01A0910D01B0910E012FBF82
:20026000409102015091030160910401709105013C014D01641A750A860A970A28EE621681
:2002800023E072068104910408F45EC08093020190930301A0930401B093050180910001DF
:2002A00090910101892B29F4B0920101A092000104C01092010110920001F7018491FE01BC
:2002C0009491F8013491332309F43EC020910001882339F1833091F038F48130A9F0823007
:2002E00001F584B58F7D12C0873091F08830A1F08430B9F4809180008F7D03C0809180001E
:200300008F77809380000DC084B58F7784BD09C08091B0008F7703C08091B0008F7D8093C4
:20032000B000E32FF0E0EE0FFF1FEE58FF4FA591B4913FB7F8948C91211103C0909598238D
:2003400001C0982B9C933FBFC114D10409F47DCF0E9400007ACFF894FFCFFFFFFFFFFFFFBA
:20036000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF9D
:200380008C0102C000E010E00E946F01800F911FA1960FB6F894DEBF0FBECDBFDF91CF919F
:2003A0001F910F91FF90EF90DF90CF900895FF920F931F93CF93DF938C01EB01F8800E9428
:2003C0002C04F81621F06F2DC8010E943404CE01DF91CF911F910F91FF9008950C942C04A4
:2003E0000E946A041F920F920FB60F9211242F933F938F939F93AF93BF9380911B01909136
:00000001FF
2

Can anyone tell me how i convert this file back to ASCII, please?

I would have thought it very likely that the password is encrypted

3

The file is in Intel HEX format, which has been around since the '70s. Google it, and you'll find tons of documentation on the (very simple) format.

Regards,
Ray L.

4

No obvious plaintext there...

0000 |..\...n...n...n...n...n...n...n.|
0020 |..n...n...n...n...n...n...n...n.|
0040 |..p...n...n...n...n...n...n...n.|
0060 |..n...n.....$.'.*.....%.(.+.....|
0080 |..................... @...... ..|
00A0 |... .....................$......|
00C0 |....!..........0................|
00E0 |.........$/.?...................|
0100 |......0...#.#.-7 .........&.#...|
0120 |.... ...........................|
0140 |................................|
0160 |......?./...........x....`.....`|
0180 |.....`.....`....n..`..n.........|
01A0 |.`.........`.........`.........`|
01C0 |.........`......z..`..z...z..`..|
01E0 |z...z..`..z...z..h..z...........|
0200 |$..........#...........Y.O......|
0220 |.X.O...........+............ ...|
0240 | ....$...,/.................../.|
0260 |@...P...`...p...<.M.d.u.....(.b.|
0280 |#.r.......^.....................|
02A0 |.....+).........................|
02C0 |....4.3#..>. ....#9..0..8..0...0|
02E0 |.....}...0...0...0.......}......|
0300 |.w.........w.........w.......}..|
0320 |.../.......X.O....?.....!......#|
0340 |...+..?.......}.....z...........|
0360 |................................|
0380 |..........o.....................|
03A0 |................................|
03C0 |,...!.o-....4.................,.|
03E0 |..j..........$/.?...............|
0400
5

Thanks, well at least it is secure... what tool did you use oqibidipo ? i would love to check some other IoT devices.

6

You just need a hex editor - most have an ASCII decide in a column.

7

KawasakiZx10r:
...well at least it is secure...

Secure-ish. Once the hacker has possession of the device, as you have, and the ability to operate the device, as you also have, there is no way to protect a password.