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Modifined bin RSA signature error
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Topic: Modifined bin RSA signature error (Read 4188 times)
totti
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Modifined bin RSA signature error
« on: September 07, 2016, 11:15:50 AM »
Hi!
My friend has an Seat Leon 1.8t with modified ECU. I downloaded the bin, and run the me7check and m7sum and got a RSA signature error. I would like to modify the bin(disable second O2 sensor). The question is, if I modify the bin, then calcthe new crc with m7sum everything will be good?
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totti
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Re: Modifined bin RSA signature error
« Reply #1 on: September 07, 2016, 11:17:08 AM »
The log from the downloaded bin:
==============================================================================
ME7Check v1.12 (c) mki, 06/2004-05/2012
Checking file ..\Seat Leon fr jih-945.bin (size=1048576)
Reading Version Strings...
-> Bootrom Version = 05.12
-> EPK = 41/1/ME7.5/51/4019.02//24C/Dst03o/030702/
-> Contents of ECUID data table:
- '0261208115' (SSECUHN)
- '1037366379' (SSECUSN)
- '06A906032MJ ' (VAG part number)
- '0003' (VAG sw number)
- '1.8L R4/5VT ' (engine id)
-> Contents of ECUID data table:
- 'HW_MAN004'
RSA signature failure found
-> Found 1 error!!! *******************************
ME7Tool (v1.0.3) [Management tool for Bosch ME7.x firmwares]
Inspiration from Andy Whittaker's tools and information.
Written by 360trev and nyet [BSD License Open Source].
Attempting to open firmware file '..\Seat Leon fr jih-945.bin'
Step #1: Reading ROM info ..
Searching for EPK signature...OK
Searching for ECUID table...OK
EPK : '41/1/ME7.5/51/4019.02//24C/Dst03o/030702/'
Part Number : '06A906032MJ '
Engine ID : '1.8L R4/5VT '
SW Version : '0003'
HW Number : '0261208115'
SW Number : '1037366379'
Step #2: Reading ROMSYS ..
Startup section: word[0x008000]+word[0x00FFFE]
@008038 Add=0x00F6B5 CalcAdd=0x00F6B5 ADD OK
Program pages: 8k page first+last in 0x0000-0xFFFF and 0x20000-0xFFFFF
@00803c Add=0xA3B1F1 CalcAdd=0xA3B1F1 ADD OK
All param page: word[0x010000]+word[0x01FFFE]
@01bef0 Add=0x00971D CalcAdd=0x00971D ADD OK
Step #3: Reading RSA signatures ..
Searching for RSA offset #0...OK
Searching for RSA offset #1...OK
Signature: @8f5e4-8f664
Modulus: @168d4-16954
Exponent: @16954 = 3
Searching for MD5 ranges...OK
MD5 Block Offset Table @168b0 [32 bytes]:
1) 0x00010002-0x00013FFE
2) 0x00014252-0x00017F4E
3) 0x00018192-0x0001FBDC
4) 0x00026A00-0x0002FFFC
EncrMD5: 77 74 d2 15 28 21 aa bc 08 4a 97 bd 7d 24 a7 2e
CalcMD5: 81 0d 6a fb 13 97 65 20 01 95 2f 6f 2f 6d d8 84
** NOT OK **
Step #4: Finding CRC table(s) ..
Searching for CRC table(s)...OK
CRC table(s) OK
Step #5: Reading Main Data Checksums ..
Searching for main data CRC pre block...missing
Searching for main data CRC/csum blocks...OK
Searching for main data CRC offsets...missing
Searching for main data checksum offsets...OK
Main Checksums:
1) 0x010002-0x013FFE CalcCSM: 00134D00
2) 0x014252-0x017F4E CalcCSM: 00276C59
3) 0x018192-0x01FBDC CalcCSM: 0045E36D
4) 0x026A00-0x02FFFC CalcCSM: 00C257C2
@8fe2a CSM: 00C257C2 CalcCSM: 00C257C2 Main data checksum OK
Step #6: Reading Main Program Checksums ..
Searching for main program checksum..OK
ROM Checksum Block Offset Table @1fb74 [16 bytes]:
1) 0x000000-0x00FBFF CalcChk: 48D184BF
0x00FC00-0x01FFFF CalcChk: 21F89FEE CalcCRC: 25FE8BE8 SKIPPED
2) 0x020000-0x0FFFFF
<fffe0> Chk: 3234F8B5 CalcChk: 3234F8B5 OK (i)
Step #7: Reading Multipoint Checksum Blocks ..
Searching for multipoint block descriptor #1...missing
Searching for multipoint block descriptor #2...OK
1) <1fbde> 0x000000-0x003FFF Chk: 0FA0F5CF Boot: (whitelisted) OK
2) <1fbee> 0x004000-0x007FFF Chk: 0F4716B3 Boot: (whitelisted) OK
3) <1fbfe> 0x000000-0x003FFF Chk: 0FA0F5CF CalcChk: 0FA0F5CF OK
4) <1fc0e> 0x004000-0x007FFF Chk: 0F4716B3 CalcChk: 0F4716B3 OK
Multipoint #2: [66 blocks x <16> = 1056 bytes]
*** Found 70 checksums in ..\Seat Leon fr jih-945.bin
*** WARNING! 1/1 uncorrected error(s) in ..\Seat Leon fr jih-945.bin! ***
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nyet
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Re: Modifined bin RSA signature error
« Reply #2 on: September 07, 2016, 11:22:02 AM »
Yes.
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