woody-woodpacker/includes/woody.h

#ifndef WOODY_H
#define WOODY_H

#include "../ft_printf/includes/ft_printf.h"
#include <stdbool.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <elf.h>
#include <stdint.h>


#define JUMP "\xe9"
#define WOODY "....WOODY...."
#define JUMP_VALUE "\xda\xda\xda"

#define TEXT_OFFSET "\xba\xba\xba\xba\xba\xba\xba\xba"
#define SECTION_SIZE "\xca\xca\xca\xca\xca\xca\xca\xca"
  
typedef struct payload
{
	char *payload;
	int len;
}	t_payload;

typedef struct elf32
{
	Elf32_Ehdr *Ehdr;
	Elf32_Phdr *Phdr;
	Elf32_Shdr *Shdr;
	Elf32_Shdr *text_section;
} t_elf32;

typedef struct elf64
{
	Elf64_Ehdr *Ehdr;
	Elf64_Phdr *Phdr;
	Elf64_Shdr *Shdr;
	Elf64_Shdr *text_section;
} t_elf64;

typedef struct elf_content
{
	long unsigned int file_size;
	char *file_path;
	char *file;
	t_elf32 *elf32;
	t_elf64 *elf64;
} t_elf_content;

// utils.c
void *fetch(char *file, unsigned long file_size, unsigned long offset_to_data, unsigned long supposed_data_size);
int ft_put_error(char *str);
char *get_string(char *str, char *end_file);
int	get_symbols_count(int sh_size, int sh_entsize);
char *get_section_name(t_elf_content *woody, int section_index);
int elf_magic_numbers(char *str);

// payload.c
t_payload *get_payload();
int	insert_payload(t_elf_content *woody, t_payload *payload, size_t payload_position, unsigned int e_entry, unsigned int p_offset, unsigned int p_memsz);

// woody32.c
int get_elf_sections32(t_elf_content *woody);
int	inject32(t_elf_content *woody);

// woody64.c
int get_elf_sections64(t_elf_content *woody);
int	inject64(t_elf_content *woody);


// encrypt.c
void encrypt(char *file, unsigned long int offset, unsigned long int size);

#endif