In this challenge you will get a a netcat and a linux binary file and once run 
```welcome to the guessing game!guess what I'm thinking```
The main focus of this challenge is the binary file and using ghidra we could dump the binary and get a rough c code but for this challenge its we got the logic right away.
```undefined8 main(void)
{  int iVar1;  undefined8 uVar2;  long in_FS_OFFSET;  int local_a4;  FILE *local_a0;  char local_98 [64];  char local_58 [72];  long local_10;   local_10 = *(long *)(in_FS_OFFSET + 0x28);  setbuf(stdout,(char *)0x0);  puts("welcome to the guessing game!");  puts("guess what I\'m thinking");  fgets(local_98,0x40,stdin);  iVar1 = strcmp(local_98,"nuh uh pls nolfjdl\n");  if (iVar1 == 0) {    puts("please guess a number between 0 and 100:");    __isoc99_scanf(&DAT_00102089,&local_a4);    if ((int)(0x17a / (long)local_a4) + 3 == local_a4) {      puts("congratulations! you guessed the correct number!");    }    else {      puts("sorry, you guessed the wrong number!");    }    local_a0 = fopen("flag.txt","r");    if (local_a0 == (FILE *)0x0) {      puts("flag.txt not found - ping us on discord if you are running this on the server");      uVar2 = 1;    }    else {      fgets(local_58,0x40,local_a0);      puts(local_58);      uVar2 = 0;    }  }  else {    puts("nuh uh!");    uVar2 = 1;  }  if (local_10 != *(long *)(in_FS_OFFSET + 0x28)) {                    /* WARNING: Subroutine does not return */    __stack_chk_fail();  }  return uVar2;}```
here on
```  puts("welcome to the guessing game!");  puts("guess what I\'m thinking");  fgets(local_98,0x40,stdin);  iVar1 = strcmp(local_98,"nuh uh pls nolfjdl\n");```
we got a fgets and it will get a value local_98 and a string **"nuh uh pls nolfjdl"** and entering **"nuh uh pls nolfjdl"** we get the:
> please guess a number between 0 and 100:
```  if ((int)(0x17a / (long)local_a4) + 3 == local_a4) {      puts("congratulations! you guessed the correct number!");    }    else {      puts("sorry, you guessed the wrong number!");    }```
this is dosen't need to be overcomplicated because what ever you'll do it will go to the end to the:
```    local_a0 = fopen("flag.txt","r");```
--------------------------------------------------------------------------Full output:
```$ nc tjc.tf 31478welcome to the guessing game!guess what I'm thinkingnuh uh pls nolfjdlplease guess a number between 0 and 100:90sorry, you guessed the wrong number!tjctf{n3v3r_c0uld_r34d_y0ur_m1nd_8e6646a1}```
> tjctf{n3v3r_c0uld_r34d_y0ur_m1nd_8e6646a1}