IDAEye - Documentation


Mohamad Fadel Mokbel
http://www.mfmokbel.com
mfmokbel [AT] live [DOT] com
Twitter: @MFMokbel


[ IDAEye v0.2 - Aicasn Build:261214 ]
[ An IDA Pro Plugin ]
< All Rights Reserved (C) 2014 >
is an IDA Pro plugin that enables you to perform different operations at the mnemonic level, independent of any particular processor type. These operations are facilitated through a parameterized template, which include the capabilities to de/highlight instructions, gather statistical information about the frequency of each instruction, and search for sequences of mnemonics, among other features.
IDAEye

[ IDAEye Advantages ]
A. Verbose templates that can be shared among researchers
B. Support for both IDA 32-bit & 64-bit versions
C. Self Documenting features

[ Installation ]
1. Copy "\IDAEye\32-Bit\IDAEye.plw" to "\IDA\plugins"
2. Copy "\IDAEye\64-Bit\IDAEye.p64" to "\IDA\plugins"
3. Copy "\IDAEye\Template\IDAEye.iet" to "\IDA\plugins"

Then, add the following 10 lines to "\IDA\plugins\plugins.cfg" config. file:

    IDAEye:_HLP->_Current_Function          IDAEye      Ctrl-Alt-F        1
    IDAEye:_HLP->_Selected_Area             IDAEye      Ctrl-Alt-S        2
    IDAEye:_HLP->_Whole_Program             IDAEye      Ctrl-Alt-W        3
    IDAEye:_FSP->_Current_Function          IDAEye      Ctrl-Shift-F      4
    IDAEye:_FSP->_Selected_Area             IDAEye      Ctrl-Shift-S      5
    IDAEye:_FSP->_Whole_Program             IDAEye      Ctrl-Shift-W      6
    IDAEye:_FSP->_Auto-Generate             IDAEye      Ctrl+Shift+A      7
    IDAEye:_MnemStat->_Current_Function     IDAEye      Alt-F             9
    IDAEye:_MnemStat->_Selected_Area        IDAEye      Alt-Z             10
    IDAEye:_MnemStat->_Whole_Program        IDAEye      Alt-W             11

These are IDAEye's menu items to control it. In addition to these 10 items, a menu item with the name "IDAEye: Quantum", Hotkey: Ctrl+H, is added programmatically.

To test if the plugin is loaded correctly after performing above operations, you should see the message "+ IDAEye v0.2 - Aicasn Build:261214 - 2014 (C) - Mohamad F. Mokbel" in IDA's Output window. This message appears after opening a file to disassemble. Moreover, it should appear once more after calling any of IDAEye's menu items.

Note: IDAEye was tested with IDA Pro v6.2 and up, but I see no reason why it shouldn't work with earlier versions. IDAEye builds are available for Windows only.

[ Template File Description ]
The template file is the core component of IDAEye. It provides all the necessary elements to interact with the plugin. It supports two instruction patterns.

I. The first instruction pattern deals with de/highlighting, and gathering of
   statistical information about a given instruction mnemonic in the disassembly
   list. These operations are controlled via the <Option(s)> selector.


INST = [<Mnemonic>:$:<Color in BGR/Hexadecimal>:$:<Option(s)>];


A. " INST = [", opening delimiter for the instruction pattern (note the space at
                the beginning)

B. "];", closing delimiter for the instruction pattern; 'anything' can be added
         after the closing delimiter (for example, a comment)

C. ":$:", elements separator

D. Each instruction pattern has to start on a new line, with a space at the
   beginning.

E. This instruction pattern is known as HighLight Pattern (HLP)

Following is a description of each element:

1. <Mnemonic>, takes any mnemonic string between 1 and 32 characters. Case
               sensitivity is IDA disassembly list dependant.

2. <Color in BGR/Hexadecimal>, the color chosen to de/highlight the instruction
                               that matches the <mnemonic> in the instruction
                               pattern. It is a hexadecimal value, in BGR mode.
                               Format: [0-9a-fA-F]{6}

3. <Option(s)>, instructs the plugin to perform any of the following actions:
  OPTION values [0-4] can be combined together, separated with the delimiter ":".
  Statistical information is displayed in the Output window.


The following is an example of how this instruction pattern can be used:


                   
INST = [xor:$:66cc00:$:0:2:3:4];


This instruction pattern searches (search boundary is defined by the chosen menu item) IDA disassembly list for instructions with the mnemonic "xor", and if it is already colored with "66cc00" (green), it de-highlights it (OPTION 0), then it displays the number of time(s) this mnemonic/instruction was found, and the address(es) where it is found (OPTION 2). After that, it highlights only "xor" instructions that have different operands (OPTION 3). And finally, it displays the number of time(s) this mnemonic/instruction of different operands was found, and the address(es) where it is found (OPTION 4).


II. The second instruction pattern is responsible for searching for sequence of
    mnemonics, and reporting the address(es) where each sequence is found.
    Results are displayed in the Output window.


INSTS = [:$:<Mnemonic>
        
:$:<Mnemonic>
        
:$:<Mnemonic>
        
:$:<More Mnemonics>
       
];


A.
This instruction pattern has similar format characteristics to the first one
   detailed above. Mnemonics can be written on one line or divided, such that
   each mnemonic is placed on a new line (as shown above). Each mnemonic has to
   starts with the delimiter "
:$:".

B. Number of mnemonics is limited by the number of instructions in the
   disassembly list, duh!

C. The search algorithm crosses the boundaries between functions (prologue and
   epilogue). Moreover, it skips non-code defined instructions

D. Minimum of two mnemonics have to be put in this instruction pattern.

E. This instruction pattern is known as Find Sequence Pattern (FSP)


The following is an example of how this instruction pattern can be used:

        
INSTS = [:$:nop:$:call:$:ldarg.0:$:callvirt:$:nop:$:nop:$:ret];

Or, it can be written as follows:

         INSTS = [:$:nop
                 
:$:call
                 
:$:ldarg.0
                 
:$:callvirt
                 
:$:nop
                 
:$:nop
                 
:$:ret
                
];

This instruction pattern searches for sequence(s) of 7 .Net assembly mnemonics.

An example of the output is as follows:

                  + Number of FSP patterns: 1

                  + 0[1] = { 0x000021 };

First line reports how many Find Sequence Patterns (FSP) are in the template file. The second line, reports the number of the sequence pattern in the template file, followed by how many times this sequence was found between brackets, and then the address(es) where each sequence is found.

IDAEye also provides the option to auto-generate such pattern. This is accomplished via the menu item IDAEye: FSP-> Auto-Generate. This option works by selecting a set of instructions, and calling said menu item. The results are display to the Output window, which contains the auto-generated FSP pattern and the address(es) of any matching sequence found for the whole program.
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[ Template file "IDAEye.iet" notes ]

Note that following opening and closing delimiters have to always exist in the Template file (in this order):

<BEGIN PROCESS INSTRUCTIONS>

<END PROCESS INSTRUCTIONS>


[ How to invoke the Template file ]

A. To invoke the HLP instruction pattern(s), use either of the following menu
    items from the plugin menu:
     
      IDAEye: HLP-> Current Function
      IDAEye: HLP-> Selected Area
      IDAEye: HLP-> Whole Program

B. To invoke the FSP instruction pattern(s), use either of the following menu
   items from the plugin menu:

      IDAEye: FSP-> Current Function
      IDAEye: FSP-> Selected Area
      IDAEye: FSP-> Whole Program

_________________________________________________________________________________

[ IDAEye: Mnemonics Statistics ]
---------------------------------------------------------------------------------

This feature generates a table that shows the frequency of each mnemonic in the disassembly list. This is also processor independent. Generated table is displayed in IDA's Output window.

For example, the output looks like (always in descending order):

        [Mnemonic]                           [Frequency]      [Percentage]
       
----------                           -----------      ------------
       
T: 8                                 T: 12            T: 100%
     
  ----------                           -----------      ------------
        mov                                  5                41.6667
        xor                                  1                8.3333
        scas                                 1                8.3333
        not                                  1                8.3333
        lea                                  1                8.3333
        jbe                                  1                8.3333
        cmp                                  1                8.3333
        cld                                  1                8.3333

To invoke this feature, use either of the following menu items from the plugin menu:

      IDAEye: MnemStat-> Current Function
      IDAEye: MnemStat-> Selected Area
      IDAEye: MnemStat-> Whole Program
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[ IDAEye: Things To Note ]
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Note that every time any of the HLP and FSP menu items is selected, IDAEye reads the Template file and performs requested operations. Nothing is saved to currently open IDB file. This is a design decision.

Regarding the Whole Program selection, IDAEye takes the minEA and maxEA from IDA "inf" structure.
_________________________________________________________________________________

[ IDAEye: Quantum Menu Item ]
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This menu item option allows you to de-highlight and highlight the instruction at the current cursor position. Highlight color is set internally to 0xfffae6 (very light blue). It can be invoked via the hotkey Ctrl+H.
_________________________________________________________________________________

[ Comments | Questions ]
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Please feel free to send your comments, or any questions you may have my way.
Moreover, I'd like to receive your IDAEye Templates.

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                               END OF DOCUMENTATION

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OPTION DESCRIPTION
0   De-highlights instruction(s) with the matching color in the pattern
1   Highlights instruction(s) with the chosen color in the pattern
2   Displays the number of time(s) this mnemonic was found, and the
  address(es) where it is found (in an array like format)
3   Highlights instruction(s) of different operands only with the
  chosen color. (Compares only the first 2 operands)
4   Same as "2", but for instruction(s) with different operands