IDA Pro tutorial request
IDA Pro tutorial request
Ive just been going through the How to tune an evo tutorial and it is a very informative thread, well done again,
but my request is for one of the people who are able to read and understand the rom code to write if possible a similar tutorial for IDA pro and give individuals the know how to find things like 2 byte load or rpm in their rom and not be relying on others all the time to put so much work into disassembling so many roms,
I dont need the know how to be able to write or patch a rom but just the basics of what to look for,
for things like the high baud rate, I have a JDM rom 93660005 and not much work has been carried out with it so I am at a bit of a disadvantage as I dont have 2 byte load or the high baud rate,
If someone could share the know how I would find the addresses myself,
but my request is for one of the people who are able to read and understand the rom code to write if possible a similar tutorial for IDA pro and give individuals the know how to find things like 2 byte load or rpm in their rom and not be relying on others all the time to put so much work into disassembling so many roms,
I dont need the know how to be able to write or patch a rom but just the basics of what to look for,
for things like the high baud rate, I have a JDM rom 93660005 and not much work has been carried out with it so I am at a bit of a disadvantage as I dont have 2 byte load or the high baud rate,
If someone could share the know how I would find the addresses myself,
1) get idapro/install/load
2) cancel the wizard
3) drag your ROM into IDA
4) in the instruction set drop down choose SH4B (about 3 pageup's from the default)
5) hit OK
6) say you want to create a memory segment, I use 0xffff0000 and 0xffff as the start and length respectivley (thats incorrect but works fine)
7) hit OK - you should be presented with lots of lines of HEX
8) goto 0000 (keyboard G and then 0000)
9) press keyboard D 3 times, should convert that into a long number
10) double click on that new reference - should jump you to the location
11) press C
12) wait
13) wait
14) code has been converted from machine binary into assembly
15) knock yourself out!
16) use your XML as a reference to define things, I use keyboard X a lot to bring up references to the current selected object..
ps I'll post up RPM/2byte load for you tommorow!
2) cancel the wizard
3) drag your ROM into IDA
4) in the instruction set drop down choose SH4B (about 3 pageup's from the default)
5) hit OK
6) say you want to create a memory segment, I use 0xffff0000 and 0xffff as the start and length respectivley (thats incorrect but works fine)
7) hit OK - you should be presented with lots of lines of HEX
8) goto 0000 (keyboard G and then 0000)
9) press keyboard D 3 times, should convert that into a long number
10) double click on that new reference - should jump you to the location
11) press C
12) wait
13) wait
14) code has been converted from machine binary into assembly
15) knock yourself out!
16) use your XML as a reference to define things, I use keyboard X a lot to bring up references to the current selected object..
ps I'll post up RPM/2byte load for you tommorow!
1) get idapro/install/load
2) cancel the wizard
3) drag your ROM into IDA
4) in the instruction set drop down choose SH4B (about 3 pageup's from the default)
5) hit OK
6) say you want to create a memory segment, I use 0xffff0000 and 0xffff as the start and length respectivley (thats incorrect but works fine)
7) hit OK - you should be presented with lots of lines of HEX
8) goto 0000 (keyboard G and then 0000)
9) press keyboard D 3 times, should convert that into a long number
10) double click on that new reference - should jump you to the location
11) press C
12) wait
13) wait
14) code has been converted from machine binary into assembly
15) knock yourself out!
16) use your XML as a reference to define things, I use keyboard X a lot to bring up references to the current selected object..
ps I'll post up RPM/2byte load for you tommorow!
2) cancel the wizard
3) drag your ROM into IDA
4) in the instruction set drop down choose SH4B (about 3 pageup's from the default)
5) hit OK
6) say you want to create a memory segment, I use 0xffff0000 and 0xffff as the start and length respectivley (thats incorrect but works fine)
7) hit OK - you should be presented with lots of lines of HEX
8) goto 0000 (keyboard G and then 0000)
9) press keyboard D 3 times, should convert that into a long number
10) double click on that new reference - should jump you to the location
11) press C
12) wait
13) wait
14) code has been converted from machine binary into assembly
15) knock yourself out!
16) use your XML as a reference to define things, I use keyboard X a lot to bring up references to the current selected object..
ps I'll post up RPM/2byte load for you tommorow!
Evolved Member
Joined: Jan 2006
Posts: 953
Likes: 2
From: Oxfordshire
After that, open ECUflash, locate the address of a map, say Hi Octane Fuel, then use the G key in IDA to jump to that location in IDA, you'll have to scroll up a couple of lines to find the start of the map header, it'll say something like unk_4369 Rename it by right click rename to something readable, I tend to keep the address in as well, HioctFuel_4369.
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^^ its a "pro" tool so you have to pay "pro" prices. There are other nefarious ways get the software if you know where to look...but obviously since my livelihood comes from software i don't condone it 
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When you drag it in it should pop up with a box called "Load new file".
In there there is a field called "Processor type" and it defaults to "Intel 80x86 processors: metapc" - change that to "Hitachi: SH4B"
In there there is a field called "Processor type" and it defaults to "Intel 80x86 processors: metapc" - change that to "Hitachi: SH4B"
