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Author Topic: Noob IDA questions  (Read 2197 times)
toolstoy
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« on: February 20, 2023, 01:54:05 AM »

Hello! I'm a total noob and would like to start learning disassembly of my ori file and would like to practice with IDA.
I am trying to follow this guide but I am having difficult time.
http://nefariousmotorsports.com/forum/index.php?topic=6834.0#msg63323

Each time after I analyze and go to the location of ram variables, explained on the guide - I'm only seeing .long hex data.
Is it because I use IDA Pro 7.5? I don't know what I'm doing wrong.

I use a2l and bin file found here:
http://nefariousmotorsports.com/forum/index.php?topic=6828.0title=


Also, is there any IDA videos or online class anyone would recommend for noobies?

Thank you for advance
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JeanAwt
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« Reply #1 on: February 20, 2023, 10:34:50 PM »

why not use winols or tunerpro like most do here?
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prj
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« Reply #2 on: February 21, 2023, 02:30:47 AM »

why not use winols or tunerpro like most do here?
Why not stop commenting on shit you do not understand?

Hello! I'm a total noob and would like to start learning disassembly of my ori file and would like to practice with IDA.
You could start by posting your file.
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dgleich
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« Reply #3 on: February 21, 2023, 05:09:05 PM »

Hello! I'm a total noob and would like to start learning disassembly of my ori file and would like to practice with IDA.
I am trying to follow this guide but I am having difficult time.
http://nefariousmotorsports.com/forum/index.php?topic=6834.0#msg63323

Each time after I analyze and go to the location of ram variables, explained on the guide - I'm only seeing .long hex data.
Is it because I use IDA Pro 7.5? I don't know what I'm doing wrong.

I use a2l and bin file found here:
http://nefariousmotorsports.com/forum/index.php?topic=6828.0title=


Also, is there any IDA videos or online class anyone would recommend for noobies?

Thank you for advance

Try selecting the data and pressing 'c' -> analyze.
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toolstoy
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« Reply #4 on: February 21, 2023, 06:07:59 PM »

You could start by posting your file.

This is the file I'm practicing on together with a2l. Of course, my bin file for my car is different but I was told it's easier to learn with bin file that has a2l so I'm starting with that.

I try loading it 2 different ways but BOTH always giving me long hex and not loading the sub routines on the left.
One is follow the guide with 0x40000 ROM, other way is:
Step 1 : Open ida and press work on your own
setp 2 : Select binary
step 3 : click select powerpc(ppc) big-endian
step 4 : Set button
Step 5 : Click processor options
step 6 : Click and enter toc & Sda Address
    Toc address : 0x5c9ff0
    Sda address : 0x7ffff0
step 7 : Click ok
Step 8 : On memory organization
    Ram : 0x600000 Size : 0x300000
    Rom : 0x000000 Size : 0x200000
    Loading address : 0x000000 size : 0x200000
Step 9 : Choose ppc on device name
Step 10: On loaded info type, leave everything checked and click ok
Step 11: Click on "both VLE and 32-bit"
Step 12: Click on file -> Load file -> load additional binary
Step 13: Insert Load segment : 0x0
      Loading offset : 0x5c0000
      File offset in bytes : 0x1c0000
      Number of bytes : 0x40000
step 14: Click ok & Done
Step 15: Select from ROM: 0x00 to RAM:0x6000. Press C and analyze.
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toolstoy
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« Reply #5 on: February 21, 2023, 06:13:04 PM »

Try selecting the data and pressing 'c' -> analyze.

I try that but it only loads in long hex and does not get the sub routines.
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prj
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« Reply #6 on: February 22, 2023, 02:46:02 AM »

Because it's ISA not VLE. Don't select both.
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toolstoy
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« Reply #7 on: February 23, 2023, 06:07:28 AM »

Because it's ISA not VLE. Don't select both.

Thank you. This somewhat worked on one of my practice bin file, but did not on the other. I'm attaching it here also so you may see.
I was hoping to use these both as they are both ME9 and both have a2l.

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JeanAwt
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« Reply #8 on: February 24, 2023, 12:02:41 PM »

Why not stop commenting on shit you do not understand?

to learn and understand even if it bothers you.
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IamwhoIam
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« Reply #9 on: February 25, 2023, 02:03:06 AM »

Why not stop commenting on shit you do not understand?

to learn and understand even if it bothers you.

You don't seem to understand jack shit and yet you're being arrogant again, when will you learn to keep your eyes open and to not comment like a retard when you don't even understand what people are talking about?
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I have no logs because I have a boost gauge (makes things easier)
toolstoy
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« Reply #10 on: February 25, 2023, 06:02:22 AM »

Just an update:
Someone also helped me and try to disassemble the Focus bin file but will not load properly so I think there is something wrong with the file. It's weird though as it actually together with a2l but who knows. For now, I will just practice on the one that works. Thank you for the help.
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JeanAwt
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« Reply #11 on: February 26, 2023, 04:00:00 AM »

to learn and understand even if it bothers you.


You don't seem to understand jack shit and yet you're being arrogant again, when will you learn to keep your eyes open and to not comment like a retard when you don't even understand what people are talking about?

yes I was wrong, yes I misread the subject and I did not understand and I should not have answered it ok. I just wanted to try to help and understand! arrogant??compared to you I don't think so. even if you have the knowledge that does not give you the right to take people for idiots. it's really easy. if you don't like noobs that much. make sure they don't come to the forum, it'll be easier. delete my profile if you want.it will not prevent me from sleeping.thank
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