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Stregum Advanced Cheater
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Joined: 17 Jun 2014 Posts: 56 Location: We make baguettes there !
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Posted: Tue Jul 19, 2016 6:01 am Post subject: By experience, how do you find filters in shared code |
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Hi CEF ,
As the title says; by experience, when encoutering shared code and (e.g) you want to segregate good guys from bad guys, what is your method ?
Would you analyze the data first using the data structure tool or memory regions ?
Would you analyze the code messing around with breakpoints, traces/stack ?
I'm asking that because in CE's tut, analyzing data is very easy because the structure is very simple, it's obvious that the id is the 10th offset.
However, when I look at other games, the data structure is way bigger and sometimes the ID is not 4-Bytes aligned, it could be a 1-Byte or 2-Byte value and CE could take that byte and interpret it as a 4-Byte value, making the ID very hard to find if the adjacent bytes are "random" to each entity.
By experience, do you have any tips to find filters ? I'm aware that this could be a noob question, I'm neither a complete begger nor a pro, I'm just learning.
Thank you for your time
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Rhaa Stregum Vitae  |
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++METHOS I post too much
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Joined: 29 Oct 2010 Posts: 4197
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Posted: Tue Jul 19, 2016 6:14 am Post subject: |
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++METHOS wrote: | There are other things that you can try.
- You can use a pointer address for your filter, inside of your script, for the value that you are trying to manipulate.
- You can use pointer trees inside of the data structure to find something viable.
- You can shift the data structure (+ or -) and/or expand its size to find something useful.
- You can use the structure spider to find workable strings and/or for comparative analysis.
- You can check the register values by attaching the debugger or setting a breakpoint to see if something can be used for your filter.
- You can check to see if there are any instructions that are exclusive to the address/value that you are trying to manipulate and store the address for your filter by creating a second injection point.
- You can check to see if there are any instructions that are exclusive to any other address/value inside of the data structure for the address/value that you are trying to manipulate and store the address for your filter by creating a second injection point.
- You can analyze assembly code to see if an identifier is being checked or assigned somewhere.
- Et al.
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Stregum Advanced Cheater
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Joined: 17 Jun 2014 Posts: 56 Location: We make baguettes there !
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Posted: Tue Jul 19, 2016 3:33 pm Post subject: |
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There is some interesting stuff, thanks !
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