elfio-info Mailing List for ELFIO

Hi Serge,

As he suggested me the problem was resolved in the one of the last commit
of master branch.

Thank you for your help.

2014-12-31 16:50 GMT+01:00 Serge Lamikhov-Center <to_...@ho...>:

> Hi Flavio,
>
> This problem was resolved recently, but there is no releases which contain
> the change.
> Would you please give a try to ELFIO library version in the 'master'
> branch of the Git repository?
>
> Please let me know if you still observe misfunctionality.
>
> Thank you,
> Serge
>
>
> ------------------------------
> From: fla...@gm...
> Date: Tue, 23 Dec 2014 19:41:21 +0100
> To: elf...@li...
> Subject: [ELFIO-info] problem with load and save
>
>
> Hi everyone! :)
>
> I'm using Elfio 2.3 version.
>
> I'm try to load and re-save the same file, like the issue in this link:
>
> http://sourceforge.net/p/elfio/mailman/message/29442136/
>
> I find the same problem, i try this:
>
> elfio e;
> e.load("foo");
> e.save("foo2");
>
>
> But foo2 don't run.
>
> The size of foo is 8K and the size of foo2 is 4M.
>
> If i try "use readelf -l foo2" i've the same problem with segment.
>
> Mappatura da sezione a segmento:
>   Sezioni del segmento...
>    00
>    01
>    02
>    03     .bss
>    04
>    05
>    06
>    07
>    08
>
>
> Exuse me, my language is Italian :)
>
>
> I tried with the attachment "elfio_seciton.hpp", but if i replace the file
> still dose not work.
>
> I found only 2 differents
> - my library version is 2.3
> - i'm working on x86-64.
>
> Ask me everything :)
>
> I hope in your help :)
>
>
> --
> Flavio Toffalini
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming! The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is
> your hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now. http://goparallel.sourceforge.net
> _______________________________________________ ELFIO-info mailing list
> ELF...@li...
> https://lists.sourceforge.net/lists/listinfo/elfio-info
>



-- 
Flavio Toffalini

Hi Flavio,
This problem was resolved recently, but there is no releases which contain the change.Would you please give a try to ELFIO library version in the 'master' branch of the Git repository?
Please let me know if you still observe misfunctionality.
Thank you,Serge

From: fla...@gm...
Date: Tue, 23 Dec 2014 19:41:21 +0100
To: elf...@li...
Subject: [ELFIO-info] problem with load and save

Hi everyone! :)

I'm using Elfio 2.3 version.

I'm try to load and re-save the same file, like the issue in this link:

http://sourceforge.net/p/elfio/mailman/message/29442136/

I find the same problem, i try this:
elfio e;
e.load("foo");
e.save("foo2");
But foo2 don't run.

The size of foo is 8K and the size of foo2 is 4M.

If i try "use readelf -l         foo2" i've the same problem with segment.

Mappatura da sezione a segmento:
  Sezioni del segmento...
   00     
   01     
   02     
   03     .bss 
   04     
   05     
   06     
   07     
   08     

Exuse me, my language is Italian :)


I tried with the attachment "elfio_seciton.hpp", but if i replace the file still dose not work.

I found only 2 differents 
- my library version is 2.3
- i'm working on x86-64.

Ask me everything :)

I hope in your help :)

-- 
Flavio Toffalini



------------------------------------------------------------------------------
Dive into the World of Parallel Programming! The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net
_______________________________________________
ELFIO-info mailing list
ELF...@li...
https://lists.sourceforge.net/lists/listinfo/elfio-info 		 	   		  

Hi everyone! :)

I'm using Elfio 2.3 version.

I'm try to load and re-save the same file, like the issue in this link:

http://sourceforge.net/p/elfio/mailman/message/29442136/

I find the same problem, i try this:

> elfio e;
> e.load("foo");
> e.save("foo2");
>
>
But foo2 don't run.

The size of foo is 8K and the size of foo2 is 4M.

If i try "use readelf -l foo2" i've the same problem with segment.

Mappatura da sezione a segmento:
>   Sezioni del segmento...
>    00
>    01
>    02
>    03     .bss
>    04
>    05
>    06
>    07
>    08
>

Exuse me, my language is Italian :)


I tried with the attachment "elfio_seciton.hpp", but if i replace the file
still dose not work.

I found only 2 differents
- my library version is 2.3
- i'm working on x86-64.

Ask me everything :)

I hope in your help :)


-- 
Flavio Toffalini

Hi Serge,

Thank you very much for the fix !

Cheers,

Serge.


Le 20. 06. 12 07:58, Serge Lamikhov-Center a écrit :
> Hi Serge,
>
> Thank you for reporting this issue.
>
> The problem was related to lack of section data size initializing at 
> 'load' time.
> Please find attached the fixed file.
>
> Best regards,
> Serge
>
>
> ------------------------------------------------------------------------
> Date: Tue, 19 Jun 2012 11:34:00 +0200
> From: ser...@he...
> To: to_...@ho...
> CC: elf...@li...
> Subject: Re: [ELFIO-info] ELF not executable anymore after load/save
>
> Hi,
>
> One more thing : it seems that I can't add a section to an existing ELF :
>
> /    elfio e;
>     e.load("foo");
>     e.sections.add("new");
>     e.save("foo");/
>
> When running this code, it crashes with a seg fault when calling 
> "add()". Am I misusing it ?
>
> Thank you for your answer.
>
> Cheers,
>
> Serge.
>
>
> Le 14. 06. 12 10:20, Serge Burdet a écrit :
>
>     Hi,
>
>     Sure : my goal is to develop a simple packer. It would be able to
>     encrypt the .text section of an ELF and add a new executable
>     section to it (let's call it .new). .new would be able to decrypt
>     .text. Then modify the entry point to jump directly to .new, so
>     when you run the file, the .new decrypts .text and jumps to it.
>     The original .text then executes (I hope I'm clear, don't hesitate
>     to ask if not ;) ). This is part of a project we're doing here at
>     HEIG-VD.
>
>     So far I've been able to add my own section with my own machine
>     code to an ELF using the /objcopy --add-section/ tool. Now, with
>     ELFIO, I'd like to modify the entry point and flag the new section
>     as executable. That works, by the way, my only trouble is the
>     "sections-segments" thing.
>
>     Thank you for your workaround, I'm gonna try it today.
>
>     What I tried already is to re-add manually the sections to the
>     segments, using the a segment's /add_section_index/ function (
>     targetSegment->add_section_index(sectionToAdd->get_index(),
>     sectionToAdd->get_addr_align()); ). After that, I try to run the
>     modified ELF, and I think it launches but crashes instantly, and
>     the shell says "Processus arrêté" (it's french) which literally
>     means "Process stopped", could be "Process killed".
>     And a weird fact about this is that the size of the ELF hugely
>     increases : from 8kB to 4MB !
>
>     Thank you very much for your help and explanations.
>
>     Cheers,
>
>     Serge.
>
>
>     Le 13. 06. 12 16:25, Serge Lamikhov-Center a écrit :
>
>         Hi Serge,
>
>         I have at looked at the issue and here are the results concluded:
>
>         You are right - ELFIO's 'load' function does not automatically
>         relate sections to the containing segments. That is by design
>         though. Data content for segments and sections is still valid.
>
>         While segments are usually built from sections by linker (and
>         in case of ELFIO library usage, it is the only option), it is
>         not always possible to process ELF file in reverse order
>         (restore sections from segment content). Some segments may not
>         contain child sections and in generic case, no sections at all
>         may exist in executable file.
>
>         I have checked that your proposed method working fine for
>         relocatable files (object files), but not for executable
>         files. (The example program elfcopy.c is attached with this
>         email.)
>
>         As a workaround, you may try (I didn't check it by myself) the
>         following method:
>
>         -process input file
>
>         -for each _/segment/_ in input file create new _/section/_
>         with the same content in another output file
>
>         -build new segment that would contain this, just created, section
>
>         -Properly set sections/segments attributes and entry address
>
>         Probably, it will be better if you could explain your
>         intention first.
>
>         Best regards,
>
>         Serge
>
>
>
>
>         ------------------------------------------------------------------------
>         From: to_...@ho... <mailto:to_...@ho...>
>         To: ser...@he... <mailto:ser...@he...>
>         CC: elf...@li...
>         <mailto:elf...@li...>
>         Subject: RE: [ELFIO-info] ELF not executable anymore after
>         load/save
>         Date: Mon, 11 Jun 2012 17:08:17 +0300
>
>         Hi Serge,
>
>         I had never tried to use the library in such flow. Please let
>         me look at this.
>
>         Best regards,
>         Serge
>
>         ------------------------------------------------------------------------
>         Date: Mon, 11 Jun 2012 13:58:37 +0200
>         From: ser...@he... <mailto:ser...@he...>
>         To: to_...@ho... <mailto:to_...@ho...>
>         CC: elf...@li...
>         <mailto:elf...@li...>
>         Subject: Re: [ELFIO-info] ELF not executable anymore after
>         load/save
>
>         Hi Serge,
>
>         Thank you for your answer, I'm new to the ELF format and I
>         really appreciate your help.
>
>         I feel like I'm missing something with ELFIO (2.0.0), because
>         as soon as I save an ELF, all its sections get un-mapped from
>         the segments, even if I don't modify it. For example this
>         trivial code :
>
>         /    elfio e;
>             e.load("foo");
>             e.save("foo2");/
>
>         After running it, /foo2/ isn't executable, as sections doesn't
>         seem to be mapped to segments anymore (excerpt of /readelf -l
>         foo2/) :
>
>         / Section to Segment mapping:
>           Segment Sections...
>            00
>            01
>            02
>            03
>            04
>            05
>            06
>            07
>            08 /
>
>         Is there a function that I have to call after loading /foo/ so
>         its mapping stays untouched ?
>
>         Thank you for your answer.
>
>         Best regards,
>
>         Serge.
>
>
>         Le 11. 06. 12 13:27, Serge Lamikhov-Center a écrit :
>
>
>             Hi Serge,
>
>
>             The answer depends on the purpose of the section you are
>             adding. There is no problem to add a section outside
>             segment, but, loader usually works with segments only.
>             Therefore, in case the intention is to load a section and
>             execute it, most probably, you need to add it into
>             existing or new segment.
>
>
>             Best regards,
>
>             Serge
>
>             ------------------------------------------------------------------------
>             Date: Fri, 8 Jun 2012 10:33:00 +0200
>             From: ser...@he... <mailto:ser...@he...>
>             To: elf...@li...
>             <mailto:elf...@li...>
>             Subject: [ELFIO-info] ELF not executable anymore after
>             load/save
>
>             Hi everyone,
>
>             I'm using ELFIO to try and add a new section to ELF files.
>             This is my problem : as soon as I load and save an ELF, it
>             stops to be executable. /readelf -l/ shows that sections
>             aren't mapped to segments anymore.
>
>             Is this a normal behaviour ? Do I have to manually add the
>             sections to the segments ?
>
>             Thank you for your answers !
>
>             ------------------------------------------------------------------------------
>             Live Security Virtual Conference Exclusive live event will
>             cover all the ways today's security and threat landscape
>             has changed and how IT managers can respond. Discussions
>             will include endpoint security, mobile security and the
>             latest in malware threats.
>             http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>             _______________________________________________ ELFIO-info
>             mailing list ELF...@li...
>             <mailto:ELF...@li...>
>             https://lists.sourceforge.net/lists/listinfo/elfio-info
>
>
> ------------------------------------------------------------------------------ 
> Live Security Virtual Conference Exclusive live event will cover all 
> the ways today's security and threat landscape has changed and how IT 
> managers can respond. Discussions will include endpoint security, 
> mobile security and the latest in malware threats. 
> http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________ ELFIO-info mailing 
> list ELF...@li... 
> https://lists.sourceforge.net/lists/listinfo/elfio-info

Hi,

One more thing : it seems that I can't add a section to an existing ELF :

/    elfio e;
     e.load("foo");
     e.sections.add("new");
     e.save("foo");/

When running this code, it crashes with a seg fault when calling 
"add()". Am I misusing it ?

Thank you for your answer.

Cheers,

Serge.


Le 14. 06. 12 10:20, Serge Burdet a écrit :
> Hi,
>
> Sure : my goal is to develop a simple packer. It would be able to 
> encrypt the .text section of an ELF and add a new executable section 
> to it (let's call it .new). .new would be able to decrypt .text. Then 
> modify the entry point to jump directly to .new, so when you run the 
> file, the .new decrypts .text and jumps to it. The original .text then 
> executes (I hope I'm clear, don't hesitate to ask if not ;) ). This is 
> part of a project we're doing here at HEIG-VD.
>
> So far I've been able to add my own section with my own machine code 
> to an ELF using the /objcopy --add-section/ tool. Now, with ELFIO, I'd 
> like to modify the entry point and flag the new section as executable. 
> That works, by the way, my only trouble is the "sections-segments" thing.
>
> Thank you for your workaround, I'm gonna try it today.
>
> What I tried already is to re-add manually the sections to the 
> segments, using the a segment's /add_section_index/ function ( 
> targetSegment->add_section_index(sectionToAdd->get_index(), 
> sectionToAdd->get_addr_align()); ). After that, I try to run the 
> modified ELF, and I think it launches but crashes instantly, and the 
> shell says "Processus arrêté" (it's french) which literally means 
> "Process stopped", could be "Process killed".
> And a weird fact about this is that the size of the ELF hugely 
> increases : from 8kB to 4MB !
>
> Thank you very much for your help and explanations.
>
> Cheers,
>
> Serge.
>
>
> Le 13. 06. 12 16:25, Serge Lamikhov-Center a écrit :
>>
>> Hi Serge,
>>
>> I have at looked at the issue and here are the results concluded:
>>
>> You are right - ELFIO's 'load' function does not automatically relate 
>> sections to the containing segments. That is by design though. Data 
>> content for segments and sections is still valid.
>>
>> While segments are usually built from sections by linker (and in case 
>> of ELFIO library usage, it is the only option), it is not always 
>> possible to process ELF file in reverse order (restore sections from 
>> segment content). Some segments may not contain child sections and in 
>> generic case, no sections at all may exist in executable file.
>>
>> I have checked that your proposed method working fine for relocatable 
>> files (object files), but not for executable files. (The example 
>> program elfcopy.c is attached with this email.)
>>
>> As a workaround, you may try (I didn't check it by myself) the 
>> following method:
>>
>> -process input file
>>
>> -for each _/segment/_ in input file create new _/section/_ with the 
>> same content in another output file
>>
>> -build new segment that would contain this, just created, section
>>
>> -Properly set sections/segments attributes and entry address
>>
>> Probably, it will be better if you could explain your intention first.
>>
>> Best regards,
>>
>> Serge
>>
>>
>>
>> ------------------------------------------------------------------------
>> From: to_...@ho...
>> To: ser...@he...
>> CC: elf...@li...
>> Subject: RE: [ELFIO-info] ELF not executable anymore after load/save
>> Date: Mon, 11 Jun 2012 17:08:17 +0300
>>
>> Hi Serge,
>>
>> I had never tried to use the library in such flow. Please let me look 
>> at this.
>>
>> Best regards,
>> Serge
>>
>> ------------------------------------------------------------------------
>> Date: Mon, 11 Jun 2012 13:58:37 +0200
>> From: ser...@he...
>> To: to_...@ho...
>> CC: elf...@li...
>> Subject: Re: [ELFIO-info] ELF not executable anymore after load/save
>>
>> Hi Serge,
>>
>> Thank you for your answer, I'm new to the ELF format and I really 
>> appreciate your help.
>>
>> I feel like I'm missing something with ELFIO (2.0.0), because as soon 
>> as I save an ELF, all its sections get un-mapped from the segments, 
>> even if I don't modify it. For example this trivial code :
>>
>> /    elfio e;
>>     e.load("foo");
>>     e.save("foo2");/
>>
>> After running it, /foo2/ isn't executable, as sections doesn't seem 
>> to be mapped to segments anymore (excerpt of /readelf -l foo2/) :
>>
>> / Section to Segment mapping:
>>   Segment Sections...
>>    00
>>    01
>>    02
>>    03
>>    04
>>    05
>>    06
>>    07
>>    08 /
>>
>> Is there a function that I have to call after loading /foo/ so its 
>> mapping stays untouched ?
>>
>> Thank you for your answer.
>>
>> Best regards,
>>
>> Serge.
>>
>>
>> Le 11. 06. 12 13:27, Serge Lamikhov-Center a écrit :
>>
>>
>>     Hi Serge,
>>
>>
>>     The answer depends on the purpose of the section you are adding.
>>     There is no problem to add a section outside segment, but, loader
>>     usually works with segments only. Therefore, in case the
>>     intention is to load a section and execute it, most probably, you
>>     need to add it into existing or new segment.
>>
>>
>>     Best regards,
>>
>>     Serge
>>
>>     ------------------------------------------------------------------------
>>     Date: Fri, 8 Jun 2012 10:33:00 +0200
>>     From: ser...@he... <mailto:ser...@he...>
>>     To: elf...@li...
>>     <mailto:elf...@li...>
>>     Subject: [ELFIO-info] ELF not executable anymore after load/save
>>
>>     Hi everyone,
>>
>>     I'm using ELFIO to try and add a new section to ELF files.
>>     This is my problem : as soon as I load and save an ELF, it stops
>>     to be executable. /readelf -l/ shows that sections aren't mapped
>>     to segments anymore.
>>
>>     Is this a normal behaviour ? Do I have to manually add the
>>     sections to the segments ?
>>
>>     Thank you for your answers !
>>
>>     ------------------------------------------------------------------------------
>>     Live Security Virtual Conference Exclusive live event will cover
>>     all the ways today's security and threat landscape has changed
>>     and how IT managers can respond. Discussions will include
>>     endpoint security, mobile security and the latest in malware
>>     threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>>     _______________________________________________ ELFIO-info
>>     mailing list ELF...@li...
>>     <mailto:ELF...@li...>
>>     https://lists.sourceforge.net/lists/listinfo/elfio-info
>>

Hi,

Sure : my goal is to develop a simple packer. It would be able to 
encrypt the .text section of an ELF and add a new executable section to 
it (let's call it .new). .new would be able to decrypt .text. Then 
modify the entry point to jump directly to .new, so when you run the 
file, the .new decrypts .text and jumps to it. The original .text then 
executes (I hope I'm clear, don't hesitate to ask if not ;) ). This is 
part of a project we're doing here at HEIG-VD.

So far I've been able to add my own section with my own machine code to 
an ELF using the /objcopy --add-section/ tool. Now, with ELFIO, I'd like 
to modify the entry point and flag the new section as executable. That 
works, by the way, my only trouble is the "sections-segments" thing.

Thank you for your workaround, I'm gonna try it today.

What I tried already is to re-add manually the sections to the segments, 
using the a segment's /add_section_index/ function ( 
targetSegment->add_section_index(sectionToAdd->get_index(), 
sectionToAdd->get_addr_align()); ). After that, I try to run the 
modified ELF, and I think it launches but crashes instantly, and the 
shell says "Processus arrêté" (it's french) which literally means 
"Process stopped", could be "Process killed".
And a weird fact about this is that the size of the ELF hugely increases 
: from 8kB to 4MB !

Thank you very much for your help and explanations.

Cheers,

Serge.


Le 13. 06. 12 16:25, Serge Lamikhov-Center a écrit :
>
> Hi Serge,
>
> I have at looked at the issue and here are the results concluded:
>
> You are right - ELFIO's 'load' function does not automatically relate 
> sections to the containing segments. That is by design though. Data 
> content for segments and sections is still valid.
>
> While segments are usually built from sections by linker (and in case 
> of ELFIO library usage, it is the only option), it is not always 
> possible to process ELF file in reverse order (restore sections from 
> segment content). Some segments may not contain child sections and in 
> generic case, no sections at all may exist in executable file.
>
> I have checked that your proposed method working fine for relocatable 
> files (object files), but not for executable files. (The example 
> program elfcopy.c is attached with this email.)
>
> As a workaround, you may try (I didn't check it by myself) the 
> following method:
>
> -process input file
>
> -for each _/segment/_ in input file create new _/section/_ with the 
> same content in another output file
>
> -build new segment that would contain this, just created, section
>
> -Properly set sections/segments attributes and entry address
>
> Probably, it will be better if you could explain your intention first.
>
> Best regards,
>
> Serge
>
>
>
> ------------------------------------------------------------------------
> From: to_...@ho...
> To: ser...@he...
> CC: elf...@li...
> Subject: RE: [ELFIO-info] ELF not executable anymore after load/save
> Date: Mon, 11 Jun 2012 17:08:17 +0300
>
> Hi Serge,
>
> I had never tried to use the library in such flow. Please let me look 
> at this.
>
> Best regards,
> Serge
>
> ------------------------------------------------------------------------
> Date: Mon, 11 Jun 2012 13:58:37 +0200
> From: ser...@he...
> To: to_...@ho...
> CC: elf...@li...
> Subject: Re: [ELFIO-info] ELF not executable anymore after load/save
>
> Hi Serge,
>
> Thank you for your answer, I'm new to the ELF format and I really 
> appreciate your help.
>
> I feel like I'm missing something with ELFIO (2.0.0), because as soon 
> as I save an ELF, all its sections get un-mapped from the segments, 
> even if I don't modify it. For example this trivial code :
>
> /    elfio e;
>     e.load("foo");
>     e.save("foo2");/
>
> After running it, /foo2/ isn't executable, as sections doesn't seem to 
> be mapped to segments anymore (excerpt of /readelf -l foo2/) :
>
> / Section to Segment mapping:
>   Segment Sections...
>    00
>    01
>    02
>    03
>    04
>    05
>    06
>    07
>    08 /
>
> Is there a function that I have to call after loading /foo/ so its 
> mapping stays untouched ?
>
> Thank you for your answer.
>
> Best regards,
>
> Serge.
>
>
> Le 11. 06. 12 13:27, Serge Lamikhov-Center a écrit :
>
>
>     Hi Serge,
>
>
>     The answer depends on the purpose of the section you are adding.
>     There is no problem to add a section outside segment, but, loader
>     usually works with segments only. Therefore, in case the intention
>     is to load a section and execute it, most probably, you need to
>     add it into existing or new segment.
>
>
>     Best regards,
>
>     Serge
>
>     ------------------------------------------------------------------------
>     Date: Fri, 8 Jun 2012 10:33:00 +0200
>     From: ser...@he... <mailto:ser...@he...>
>     To: elf...@li...
>     <mailto:elf...@li...>
>     Subject: [ELFIO-info] ELF not executable anymore after load/save
>
>     Hi everyone,
>
>     I'm using ELFIO to try and add a new section to ELF files.
>     This is my problem : as soon as I load and save an ELF, it stops
>     to be executable. /readelf -l/ shows that sections aren't mapped
>     to segments anymore.
>
>     Is this a normal behaviour ? Do I have to manually add the
>     sections to the segments ?
>
>     Thank you for your answers !
>
>     ------------------------------------------------------------------------------
>     Live Security Virtual Conference Exclusive live event will cover
>     all the ways today's security and threat landscape has changed and
>     how IT managers can respond. Discussions will include endpoint
>     security, mobile security and the latest in malware threats.
>     http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
>     _______________________________________________ ELFIO-info mailing
>     list ELF...@li...
>     <mailto:ELF...@li...>
>     https://lists.sourceforge.net/lists/listinfo/elfio-info
>

#include <iostream>
#include "elfio.hpp"

using namespace ELFIO;

int main( int argc, char* argv[] )
{
    if ( argc != 3 ) {
        std::cout << "Usage: elfcopy <orig_file> <out_file>" << std::endl;
        return 1;
    }
    
    elfio e;
    e.load( argv[1] );
    e.save( argv[2] );
    
    return 0;
}

Hi Serge, I had never tried to use the library in such flow. Please let me look at this. Best regards,Serge
Date: Mon, 11 Jun 2012 13:58:37 +0200
From: ser...@he...
To: to_...@ho...
CC: elf...@li...
Subject: Re: [ELFIO-info] ELF not executable anymore after load/save


  
    
  
  
    Hi Serge,

    

    Thank you for your answer, I'm new to the ELF format and I really
    appreciate your help.

    

    I feel like I'm missing something with ELFIO (2.0.0), because as
    soon as I save an ELF, all its sections get un-mapped from the
    segments, even if I don't modify it. For example this trivial code :

    

        elfio e;

          e.load("foo");

          e.save("foo2");

    

    After running it, foo2 isn't executable, as sections doesn't
    seem to be mapped to segments anymore (excerpt of readelf -l
      foo2) :

    

     Section to Segment mapping:

        Segment Sections...

         00     

         01     

         02     

         03     

         04     

         05     

         06     

         07     

         08    

    

    Is there a function that I have to call after loading foo so
    its mapping stays untouched ?

    

    Thank you for your answer.

    

    Best regards,

    

    Serge.

    

    

    Le 11. 06. 12 13:27, Serge Lamikhov-Center a écrit :
    
      
      
      
        
        

        Hi Serge,
        
        

        The answer depends on the
              purpose of the section you are
              adding. There is no problem to add a section outside
              segment, but, loader usually
              works with segments only. Therefore, in case the intention
              is to load a section
              and execute it, most probably, you need to add it into
              existing or new segment.
        
        

        Best regards,
        
        Serge

        

        
          Date: Fri, 8 Jun 2012 10:33:00 +0200

          From: ser...@he...

          To: elf...@li...

          Subject: [ELFIO-info] ELF not executable anymore after
          load/save

          

           Hi everyone,

            

            I'm using ELFIO to try and add a new section to ELF files.

            This is my problem : as soon as I load and save an ELF, it
            stops to be executable. readelf -l shows that
            sections aren't mapped to segments anymore.

            

            Is this a normal behaviour ? Do I have to manually add the
            sections to the segments ?

            

            Thank you for your answers !

          
          

          ------------------------------------------------------------------------------
Live
          Security Virtual Conference
          Exclusive live event will cover all the ways today's security
          and threat landscape has changed and how IT managers can
          respond. Discussions will include endpoint security, mobile
          security and the latest in malware threats.
          http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

          _______________________________________________
          ELFIO-info mailing list
          ELF...@li...
          https://lists.sourceforge.net/lists/listinfo/elfio-info
      
     		 	   		  

Hi Serge,

Thank you for your answer, I'm new to the ELF format and I really 
appreciate your help.

I feel like I'm missing something with ELFIO (2.0.0), because as soon as 
I save an ELF, all its sections get un-mapped from the segments, even if 
I don't modify it. For example this trivial code :

/    elfio e;
     e.load("foo");
     e.save("foo2");/

After running it, /foo2/ isn't executable, as sections doesn't seem to 
be mapped to segments anymore (excerpt of /readelf -l foo2/) :

/ Section to Segment mapping:
   Segment Sections...
    00
    01
    02
    03
    04
    05
    06
    07
    08 /

Is there a function that I have to call after loading /foo/ so its 
mapping stays untouched ?

Thank you for your answer.

Best regards,

Serge.


Le 11. 06. 12 13:27, Serge Lamikhov-Center a e'crit :
>
> Hi Serge,
>
>
> The answer depends on the purpose of the section you are adding. There 
> is no problem to add a section outside segment, but, loader usually 
> works with segments only. Therefore, in case the intention is to load 
> a section and execute it, most probably, you need to add it into 
> existing or new segment.
>
>
> Best regards,
>
> Serge
>
> ------------------------------------------------------------------------
> Date: Fri, 8 Jun 2012 10:33:00 +0200
> From: ser...@he...
> To: elf...@li...
> Subject: [ELFIO-info] ELF not executable anymore after load/save
>
> Hi everyone,
>
> I'm using ELFIO to try and add a new section to ELF files.
> This is my problem : as soon as I load and save an ELF, it stops to be 
> executable. /readelf -l/ shows that sections aren't mapped to segments 
> anymore.
>
> Is this a normal behaviour ? Do I have to manually add the sections to 
> the segments ?
>
> Thank you for your answers !
>
> ------------------------------------------------------------------------------ 
> Live Security Virtual Conference Exclusive live event will cover all 
> the ways today's security and threat landscape has changed and how IT 
> managers can respond. Discussions will include endpoint security, 
> mobile security and the latest in malware threats. 
> http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________ ELFIO-info mailing 
> list ELF...@li... 
> https://lists.sourceforge.net/lists/listinfo/elfio-info

Hi Serge,

The answer depends on the purpose of the section you are
adding. There is no problem to add a section outside segment, but, loader usually
works with segments only. Therefore, in case the intention is to load a section
and execute it, most probably, you need to add it into existing or new segment.

Best regards,

Serge
Date: Fri, 8 Jun 2012 10:33:00 +0200
From: ser...@he...
To: elf...@li...
Subject: [ELFIO-info] ELF not executable anymore after load/save


  

    
  
  
    
      Hi everyone,

      
      I'm using ELFIO to try and add a new section to ELF files.
      This is my problem : as soon as I load and save an ELF, it
        stops to be executable. readelf -l shows that sections
        aren't mapped to segments anymore.

      
      Is this a normal behaviour ? Do I have to manually add the
        sections to the segments ?

      
      Thank you for your answers !
    
  


------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
ELFIO-info mailing list
ELF...@li...
https://lists.sourceforge.net/lists/listinfo/elfio-info 		 	   		  

Hi everyone,

I'm using ELFIO to try and add a new section to ELF files.

This is my problem : as soon as I load and save an ELF, it stops to be 
executable. /readelf -l/ shows that sections aren't mapped to segments 
anymore.

Is this a normal behaviour ? Do I have to manually add the sections to 
the segments ?

Thank you for your answers !

I have been trying to install ELFIO on my computer as it is required by
another package. I have tried installing ELFIO-1.0.2 and ELFIO-1.0.3. But in
both cases the build fails as a 'buffer overflow is detected'

Here is the output of ELFIO-1.0.3 configure and make

./configure
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for g++... g++
checking for C++ compiler default output file name... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for style of include used by make... GNU
checking dependency style of g++... gcc3
checking for ranlib... ranlib
checking for a BSD-compatible install... /usr/bin/install -c
configure: creating ./config.status
config.status: creating Makefile
config.status: creating ELFIO/Makefile
config.status: creating Examples/Makefile
config.status: creating Examples/ELFDump/Makefile
config.status: creating Examples/RelocationTable/Makefile
config.status: creating Examples/Writer/Makefile
config.status: creating Examples/WriteObj/Makefile
config.status: creating Examples/WriteObj2/Makefile
config.status: creating Examples/tutorial/Makefile
config.status: creating doc/Makefile
config.status: executing depfiles commands


$ make
Making all in ELFIO
make[1]: Entering directory
`/home/rajat/Documents/Summer_Project/tars/ELFIO-1.0.3/ELFIO'
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFIDynamic.o -MD -MP -MF
".deps/ELFIDynamic.Tpo" -c -o ELFIDynamic.o ELFIDynamic.cpp; \
then mv -f ".deps/ELFIDynamic.Tpo" ".deps/ELFIDynamic.Po"; else rm -f
".deps/ELFIDynamic.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFIImpl.o -MD -MP -MF
".deps/ELFIImpl.Tpo" -c -o ELFIImpl.o ELFIImpl.cpp; \
then mv -f ".deps/ELFIImpl.Tpo" ".deps/ELFIImpl.Po"; else rm -f
".deps/ELFIImpl.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFINote.o -MD -MP -MF
".deps/ELFINote.Tpo" -c -o ELFINote.o ELFINote.cpp; \
then mv -f ".deps/ELFINote.Tpo" ".deps/ELFINote.Po"; else rm -f
".deps/ELFINote.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFIO.o -MD -MP -MF
".deps/ELFIO.Tpo" -c -o ELFIO.o ELFIO.cpp; \
then mv -f ".deps/ELFIO.Tpo" ".deps/ELFIO.Po"; else rm -f ".deps/ELFIO.Tpo";
exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFIOUtils.o -MD -MP -MF
".deps/ELFIOUtils.Tpo" -c -o ELFIOUtils.o ELFIOUtils.cpp; \
then mv -f ".deps/ELFIOUtils.Tpo" ".deps/ELFIOUtils.Po"; else rm -f
".deps/ELFIOUtils.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFIRelocation.o -MD -MP -MF
".deps/ELFIRelocation.Tpo" -c -o ELFIRelocation.o ELFIRelocation.cpp; \
then mv -f ".deps/ELFIRelocation.Tpo" ".deps/ELFIRelocation.Po"; else rm -f
".deps/ELFIRelocation.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFISection.o -MD -MP -MF
".deps/ELFISection.Tpo" -c -o ELFISection.o ELFISection.cpp; \
then mv -f ".deps/ELFISection.Tpo" ".deps/ELFISection.Po"; else rm -f
".deps/ELFISection.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFISegment.o -MD -MP -MF
".deps/ELFISegment.Tpo" -c -o ELFISegment.o ELFISegment.cpp; \
then mv -f ".deps/ELFISegment.Tpo" ".deps/ELFISegment.Po"; else rm -f
".deps/ELFISegment.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFIStrings.o -MD -MP -MF
".deps/ELFIStrings.Tpo" -c -o ELFIStrings.o ELFIStrings.cpp; \
then mv -f ".deps/ELFIStrings.Tpo" ".deps/ELFIStrings.Po"; else rm -f
".deps/ELFIStrings.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFISymbols.o -MD -MP -MF
".deps/ELFISymbols.Tpo" -c -o ELFISymbols.o ELFISymbols.cpp; \
then mv -f ".deps/ELFISymbols.Tpo" ".deps/ELFISymbols.Po"; else rm -f
".deps/ELFISymbols.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFODynamic.o -MD -MP -MF
".deps/ELFODynamic.Tpo" -c -o ELFODynamic.o ELFODynamic.cpp; \
then mv -f ".deps/ELFODynamic.Tpo" ".deps/ELFODynamic.Po"; else rm -f
".deps/ELFODynamic.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFOImpl.o -MD -MP -MF
".deps/ELFOImpl.Tpo" -c -o ELFOImpl.o ELFOImpl.cpp; \
then mv -f ".deps/ELFOImpl.Tpo" ".deps/ELFOImpl.Po"; else rm -f
".deps/ELFOImpl.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFONote.o -MD -MP -MF
".deps/ELFONote.Tpo" -c -o ELFONote.o ELFONote.cpp; \
then mv -f ".deps/ELFONote.Tpo" ".deps/ELFONote.Po"; else rm -f
".deps/ELFONote.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFORelocation.o -MD -MP -MF
".deps/ELFORelocation.Tpo" -c -o ELFORelocation.o ELFORelocation.cpp; \
then mv -f ".deps/ELFORelocation.Tpo" ".deps/ELFORelocation.Po"; else rm -f
".deps/ELFORelocation.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFOSection.o -MD -MP -MF
".deps/ELFOSection.Tpo" -c -o ELFOSection.o ELFOSection.cpp; \
then mv -f ".deps/ELFOSection.Tpo" ".deps/ELFOSection.Po"; else rm -f
".deps/ELFOSection.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFOSegment.o -MD -MP -MF
".deps/ELFOSegment.Tpo" -c -o ELFOSegment.o ELFOSegment.cpp; \
then mv -f ".deps/ELFOSegment.Tpo" ".deps/ELFOSegment.Po"; else rm -f
".deps/ELFOSegment.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFOString.o -MD -MP -MF
".deps/ELFOString.Tpo" -c -o ELFOString.o ELFOString.cpp; \
then mv -f ".deps/ELFOString.Tpo" ".deps/ELFOString.Po"; else rm -f
".deps/ELFOString.Tpo"; exit 1; fi
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"ELFIO\"
-DVERSION=\"1.0.3\"  -I. -I.     -g -O2 -MT ELFOSymbols.o -MD -MP -MF
".deps/ELFOSymbols.Tpo" -c -o ELFOSymbols.o ELFOSymbols.cpp; \
then mv -f ".deps/ELFOSymbols.Tpo" ".deps/ELFOSymbols.Po"; else rm -f
".deps/ELFOSymbols.Tpo"; exit 1; fi
rm -f libELFIO.a
ar cru libELFIO.a ELFIDynamic.o ELFIImpl.o ELFINote.o ELFIO.o ELFIOUtils.o
ELFIRelocation.o ELFISection.o ELFISegment.o ELFIStrings.o ELFISymbols.o
ELFODynamic.o ELFOImpl.o ELFONote.o ELFORelocation.o ELFOSection.o
ELFOSegment.o ELFOString.o ELFOSymbols.o
*** buffer overflow detected ***: ar terminated
======= Backtrace: =========
/lib/libc.so.6(__fortify_fail+0x50)[0x40124980]
/lib/libc.so.6(+0xe487a)[0x4012387a]
/lib/libc.so.6(+0xe3fb8)[0x40122fb8]
/lib/libc.so.6(_IO_default_xsputn+0x9e)[0x400a9a2e]
/lib/libc.so.6(_IO_padn+0xd8)[0x4009d3b8]
/lib/libc.so.6(_IO_vfprintf+0x2b17)[0x4007ed27]
/lib/libc.so.6(__vsprintf_chk+0xad)[0x4012306d]
/lib/libc.so.6(__sprintf_chk+0x2d)[0x40122fad]
ar[0x8050355]
ar[0x804e6d3]
ar[0x8050cfe]
ar[0x8053a88]
ar[0x804b5cf]
ar[0x804c236]
/lib/libc.so.6(__libc_start_main+0xe7)[0x40055ce7]
ar[0x8049351]
======= Memory map: ========
08048000-080aa000 r-xp 00000000 08:07 214688     /usr/local/bin/ar
080aa000-080ab000 r--p 00061000 08:07 214688     /usr/local/bin/ar
080ab000-080ac000 rw-p 00062000 08:07 214688     /usr/local/bin/ar
09b4f000-09c3c000 rw-p 00000000 00:00 0          [heap]
40000000-4001c000 r-xp 00000000 08:07 496        /lib/ld-2.12.1.so
4001c000-4001d000 r--p 0001b000 08:07 496        /lib/ld-2.12.1.so
4001d000-4001e000 rw-p 0001c000 08:07 496        /lib/ld-2.12.1.so
4001e000-4001f000 r-xp 00000000 00:00 0          [vdso]
4001f000-40021000 rw-p 00000000 00:00 0
40021000-40022000 r--p 0029c000 08:07 262293
/usr/lib/locale/locale-archive
40022000-40029000 r--s 00000000 08:07 159193
/usr/lib/gconv/gconv-modules.cache
40029000-40033000 rw-p 00000000 00:00 0
4003f000-40196000 r-xp 00000000 08:07 821        /lib/libc-2.12.1.so
40196000-40197000 ---p 00157000 08:07 821        /lib/libc-2.12.1.so
40197000-40199000 r--p 00157000 08:07 821        /lib/libc-2.12.1.so
40199000-4019a000 rw-p 00159000 08:07 821        /lib/libc-2.12.1.so
4019a000-4019e000 rw-p 00000000 00:00 0
4019e000-4039e000 r--p 00000000 08:07 262293
/usr/lib/locale/locale-archive
403bc000-403d6000 r-xp 00000000 08:07 885        /lib/libgcc_s.so.1
403d6000-403d7000 r--p 00019000 08:07 885        /lib/libgcc_s.so.1
403d7000-403d8000 rw-p 0001a000 08:07 885        /lib/libgcc_s.so.1
bfb47000-bfb68000 rw-p 00000000 00:00 0          [stack]
make[1]: *** [libELFIO.a] Aborted
make[1]: *** Deleting file `libELFIO.a'
make[1]: Leaving directory
`/home/rajat/Documents/Summer_Project/tars/ELFIO-1.0.3/ELFIO'
make: *** [all-recursive] Error 1

I urgently need to install the package. Please assist.

If this is of any use, I had installed it once before (less than 2 days
ago). Trying to build again, is causing a problem. Also, over the two days,
I had installed older versions of gcc,glibc, etc (alongwith the latest) as
the older versions were needed specifically by another package (crosstool)
.

Hi,
ELFIO-0.2.0 released.

You can download it from SourceForge by following this link:
<http://sourceforge.net/project/showfiles.php?group_id=19959&release_id=37037>
or browse Release Notes and ChangeLog by visiting this link:
<http://sourceforge.net/project/shownotes.php?release_id=37037>

Serge

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Please see "http://sourceforge.net/projects/elfio/" file releases.
Serge