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#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <stdint.h>
void linux_setting();
void try_gdb();
void endianness();
uint64_t substack();
void stack();
int data_int[] = {0xd25f2f67, 0xaad200ad, 0xa505c8ac, 0x6d295f2, 0x5c1e76d2, 0x426cba27, 0x38363bb2, 0xd930942f, 0x3b4fe71c, 0x23b0eaae};
char data_chr[] = "Wubba Lubba Dub Dub!";
void * data_pointer[] = {printf, puts, scanf, linux_setting, try_gdb, endianness, substack, stack};
char shellcode[0x50];
void linux_setting(){
puts("As you see this, I'm sure you run this program on Linux/WSL!");
}
void try_gdb(){
uint64_t rip;
srand(time(0));
int randnum = rand(), guessnum;
puts("Guess the number ?");
asm volatile("1: lea 1b(%%rip), %0;": "=a"(rip));
printf("Current IP = 0x%lx\n", rip);
scanf("%d", &guessnum);
if(guessnum == randnum){
puts("Wow...You are correct.");
}
else{
puts("Seems that you got wrong!");
exit(0);
}
}
void endianness(){
uint64_t a;
uint32_t b = 0xdeadbeef;
uint16_t c = 0xface;
uint8_t d[2] = {0xae, 0xaf};
* (uint8_t *)&a = d[0];
* (uint16_t *)((uint8_t *)&a + 1) = c;
* (uint32_t *)((uint8_t *)&a + 3) = b;
* (uint8_t *)( (uint8_t *)&a + 7) = d[1];
char ans[8];
for(int i = 0; i < 8 ; i++){
int p;
scanf("%d", &p);
ans[i] = p & 0xff;
}
if(* (uint64_t *)ans == a){
puts("pass!");
}
else puts("try again");
}
uint64_t substack(){
uint64_t varies3 = 0xdeadbeefadcaffee;
return (uint64_t)&varies3;
}
void stack(){
char varies0[8] = "ABCDEFGH";
int varies1 = 0x12345678;
int varies2 = 0x90abcdef;
register int* a = &varies1;
register int* b = &varies2;
register int count = 0;
register uint64_t end = substack();
printf("%08lx\n", (uint64_t)stack);
printf("%08lx\n", (uint64_t)varies0);
for(register uint64_t pointer = end; pointer <= (uint64_t)varies0 ; pointer += 8){
char *s = getenv("SECURITY_DEBUG");
if(s){
printf("0x%lx : %8lx\n", pointer, *(uint64_t *)(pointer));
continue;
}
uint64_t input;
scanf("%lu", &input);
if(input != *(uint64_t *)(pointer)){
puts("Fail.");
exit(0);
}
count ++;
}
puts("Congrations!");
}
int main(){
linux_setting();
try_gdb();
endianness();
stack();
return 0;
}
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