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Full Discussion: Passing arguments to shellcode
Top Forums Programming Passing arguments to shellcode Post 302529269 by Corona688 on Thursday 9th of June 2011 01:34:01 AM
Old 06-09-2011
Code:
#include "include/sfsyscall.h"

int main(int argc, char *argv[])
{
    char string[5]="NEA\n";

    if ( argc < 2 )
    {
        write(1,string,sizeof(string));
    }else{
        write(1,argv[1], sizeof(argv[1]));
    }

    return(0);
}

This doesn't use shellforge at all. It write()'s the raw strings from argv to standard output. That's what had me so puzzled: There's some very important steps missing between this and even the nonfunctional example you posted.

sizeof() doesn't work on strings either since sizeof() is fixed at compile-time while strings can vary at runtime. It only gives you the size of the pointer pointing to the string. strlen() would be what you want.
 

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LEARN ABOUT DEBIAN

glisprogram

GLISPROGRAM(3G) 						  [FIXME: manual]						   GLISPROGRAM(3G)

NAME

       glIsProgram - Determines if a name corresponds to a program object

C SPECIFICATION

       GLboolean glIsProgram(GLuint program);

PARAMETERS

       program
	   Specifies a potential program object.

DESCRIPTION

       glIsProgram returns GL_TRUE if program is the name of a program object previously created with glCreateProgram() and not yet deleted with
       glDeleteProgram(). If program is zero or a non-zero value that is not the name of a program object, or if an error occurs, glIsProgram
       returns GL_FALSE.

NOTES

       No error is generated if program is not a valid program object name.

       A program object marked for deletion with glDeleteProgram() but still in use as part of current rendering state is still considered a
       program object and glIsProgram will return GL_TRUE.

ASSOCIATED GETS

       glGet() with the argument GL_CURRENT_PROGRAM

       glGetActiveAttrib() with arguments program and the index of an active attribute variable

       glGetActiveUniform() with arguments program and the index of an active uniform variable

       glGetAttachedShaders() with argument program

       glGetAttribLocation() with arguments program and the name of an attribute variable

       glGetProgram() with arguments program and the parameter to be queried

       glGetProgramInfoLog() with argument program

       glGetUniform() with arguments program and the location of a uniform variable

       glGetUniformLocation() with arguments program and the name of a uniform variable

SEE ALSO

       glAttachShader(), glBindAttribLocation(), glCreateProgram(), glDeleteProgram(), glDetachShader(), glLinkProgram(), glUniform(),
       glUseProgram(), glValidateProgram()

COPYRIGHT

       Copyright (C) 2003-2005 3Dlabs Inc. Ltd. This material may be distributed subject to the terms and conditions set forth in the Open
       Publication License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

[FIXME: source] 						    05/30/2012							   GLISPROGRAM(3G)
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