mirror of
https://github.com/JonathanSalwan/ROPgadget
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djo
74 lines
1.9 KiB
C
Executable File
74 lines
1.9 KiB
C
Executable File
/*
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** RopGadget - Dev v3.3
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** Jonathan Salwan - http://twitter.com/JonathanSalwan
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** http://shell-storm.org
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** 2011-10-16
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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*/
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#include "ropgadget.h"
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/* function for add a new element in linked list | save a exec maps */
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static t_maps_exec *add_maps_exec(t_maps_exec *old_element, Elf32_Addr addr_start, Elf32_Addr addr_end)
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{
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t_maps_exec *new_element;
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new_element = malloc(sizeof(t_maps_exec));
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if (new_element == NULL)
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exit(EXIT_FAILURE);
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new_element->addr_start = addr_start;
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new_element->addr_end = addr_end;
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new_element->next = old_element;
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return (new_element);
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}
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/* free linked list */
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void free_add_maps_exec(t_maps_exec *element)
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{
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t_maps_exec *tmp;
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while(element)
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{
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tmp = element;
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element = element->next;
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free(tmp);
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}
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}
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/* check if flag have a EXEC BIT */
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static int check_exec_flag(Elf32_Word flag)
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{
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if (flag == 1 || flag == 3 || flag == 5 || flag == 7)
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return (TRUE);
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else
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return (FALSE);
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}
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/* return linked list with maps exec segment */
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t_maps_exec *return_maps_exec(void)
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{
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int x = 0;
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t_maps_exec *maps_exec;
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maps_exec = NULL;
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while (x != pElf_Header->e_phnum)
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{
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if (check_exec_flag(pElf32_Phdr->p_flags) == TRUE)
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maps_exec = add_maps_exec(maps_exec, pElf32_Phdr->p_vaddr, (Elf32_Addr)(pElf32_Phdr->p_vaddr + pElf32_Phdr->p_memsz));
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x++;
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pElf32_Phdr++;
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}
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pElf32_Phdr -= x;
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return (maps_exec);
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}
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