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A very strange list found in memory.

 
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zippoxer
Newbie cheater
Reputation: 0

Joined: 04 Feb 2008
Posts: 23
PostPosted: Wed Oct 12, 2011 7:46 am    Post subject: A very strange list found in memory. Reply with quote
I know this list is about 20 items long and I've read the contents of 7 items so far, and it is STRANGE.
Each item is 32 (0x20) bytes long. This list shows some of what's in the pack.
Code:
item 1:
    0x4: pointer to item 2
    0x8: null
    0xC: null
    0x10: (not relevant 16 (0x10) bytes of data)

item 2:
    0x4: pointer to item 4
    0x8: pointer to item 1
    0xC: pointer to item 3
    0x10: (not relevant 16 (0x10) bytes of data)
   
item 3:
    0x4: pointer to item 2
    0x8: null
    0xC: null
    0x10: (not relevant 16 (0x10) bytes of data)
   
item 4:
    0x4: pointer to item 8
    0x8: pointer to item 2
    0xC: pointer to item 6
    0x10: (not relevant 16 (0x10) bytes of data)
   
item 5:
    0x4: pointer to item 6
    0x8: null
    0xC: null
    0x10: (not relevant 16 (0x10) bytes of data)
   
item 6:
    0x4: pointer to item 4
    0x8: pointer to item 5
    0xC: pointer to item 7
    0x10: (not relevant 16 (0x10) bytes of data)
   
item 7:
    0x4: pointer to item 6
    0x8: null
    0xC: null
    0x10: (not relevant 16 (0x10) bytes of data)


I heard about linked list where every item points to the next, doubly-linked list where every item points to the next and previous, but this?
Looks very inconsistent.
Does anyone have an idea of how to read this list from beginning to end?

It would be awesome to see a Cheat Engine (lua) script printing the addresses of all the items in this list.
I'll probably end up with a function readVeryStrangeList(address) ;P
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gameplayer
Advanced Cheater
Reputation: 2

Joined: 26 Jun 2011
Posts: 97
Location: Vietnam
PostPosted: Wed Oct 12, 2011 11:33 am    Post subject: Reply with quote
It seems to be a tree data.

Tree.png
 Description:
 Filesize:  15.45 KB
 Viewed:  4542 Time(s)

Tree.png
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zippoxer
Newbie cheater
Reputation: 0

Joined: 04 Feb 2008
Posts: 23
PostPosted: Wed Oct 12, 2011 11:52 am    Post subject: Reply with quote
gameplayer wrote:
It seems to be a tree data.


Awesome. just learned something new.
Each element has pointers to parent, child 1 and child 2. Sounds like an anti-cheating solution (that didn't succeed this time Razz).
I'll keep exploring, thanks for the help!
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