View Full Version : Jump analysis
peterg70
February 3rd, 2003, 21:18
Would like to see a plugin that scans slightly ahead for JE JNE statements while the current instruction is being analysed (CMP or TEST etc)
Then it would turn on the jump path that the current test would result.
i.e.
instructions are
mov eax,01
test ax,ax
JE +2 instructions
When the EIP is a test command this would then scan forward for the next JE/JNE/etc and show in ollydbg where this would lead to.
Currently ollydbg only shows the jump details when your actually on the jump.
You might have to turn this option on in Options/CPU/Show Jump path.
Any thoughts
peterg70
TBD
February 3rd, 2003, 22:55
peterg70: you are free to make one
::hint - use _ODBG_Pluginmainloop, but be aware that your code must be very quick or else it will slow down OD to a crawl.
anyway, a nice ideea. a pitty that i dont have time to experiment

peterg70
February 4th, 2003, 04:08
If we are single stepping through the code this shouldn't need to slow down Ollydbg at all as it is only performed if single stepping through code and once per instruction Or is some parameter is changed.
Wish I had time to create one. Just offerred the idea to someone who has the time and effort to do it.
Anonymous
February 11th, 2003, 00:36
Ah yeah, and that olly crack program for you alone :-(
peterg70
February 13th, 2003, 03:04
Sorry what the hell do you mean by
Olly Crack program ?????????
How about using a nickname rather than anonymous
peterg70
TBD
February 13th, 2003, 04:47
peterg70: he meant, that Olly plugin will crack the program for you

peterg70
February 13th, 2003, 20:56
@TBD
Did I miss something I said. I never mentioned cracking.
I jsut have a hard time trying to predict the what the next jump instruction is going to do.
so if I am on a CMP ax,01 and the next instruction is JLE x02 I thought that the plugin would look at the current instruction and work out what the answer will be and then go to the JLE and show where its going to branch too.
Maybe using the internet has reduced the amount of typing I do but I still don't understand what he meant.
The olly plugin is a display only plugin for analysis. I.e. On the fly analysis.
My 2 cents worth
peterg
TBD
February 13th, 2003, 22:57
peterg70: i think everyone becamed too lazy to write plugins (including me), it is better to wait for OD 2.0 and then complain that this features is not included, ...
.zZ
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