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Full Discussion: Passing arguments to shellcode
Top Forums Programming Passing arguments to shellcode Post 302529026 by Corona688 on Wednesday 8th of June 2011 11:05:48 AM
Old 06-08-2011
Quote:
Originally Posted by image28
Is there any way I could pass arguments to shellcode.
Well, what is it?
Quote:
My goal is to store a program in a image file, and have another program read and run the code with arguments in memory.
Why are you doing this?
Quote:
Currently I can store a program in a image file, then read it back to the hard-drive run it normally then delete it when it's done running, but I'm worried someone could undelete the program.
Ah, so it's an entire executable file? An executable file is not a function. That won't work. Why are you concerned about people undeleting the executables you're hiding in an image file, and not about them undeleting the image file?
Quote:
Tried the following code, the shellcode prints a string in argc < 2 or prints argv[1] if there is an argument. Code bellow.
How did you write this? I have no idea if you should expect this to work or not even if the segment the data in was executable. You need to create an executable segment with mmap(), copy the data in, and run it from there, but beyond that I can't help you.
 

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LEARN ABOUT DEBIAN

jlessecho

LESSECHO(1)						      General Commands Manual						       LESSECHO(1)

NAME

       lessecho - expand metacharacters

SYNOPSIS

       lessecho [-ox] [-cx] [-pn] [-dn] [-mx] [-nn] [-ex] [-a] file ...

DESCRIPTION

       lessecho is a program that simply echos its arguments on standard output.  But any argument containing spaces is enclosed in quotes.

OPTIONS

       A summary of options is included below.

       -ox    Specifies "x" to be the open quote character.

       -cx    Specifies "x" to be the close quote character.

       -pn    Specifies "n" to be the open quote character, as an integer.

       -dn    Specifies "n" to be the close quote character, as an integer.

       -mx    Specifies "x" to be a metachar.

       -nn    Specifies "n" to be a metachar, as an integer.

       -ex    Specifies "x" to be the escape char for metachars.

       -fn    Specifies "n" to be the escape char for metachars, as an integer.

       -a     Specifies that all arguments are to be quoted.  The default is that only arguments containing spaces are quoted.

SEE ALSO

       less(1)

AUTHOR

       This manual page was written by Thomas Schoepf <schoepf@debian.org>, for the Debian GNU/Linux system (but may be used by others).

       Send bug reports or comments to bug-less@gnu.org.

							     Version 394: 03 Dec 2005						       LESSECHO(1)
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