Rating:
# HackPack GaussBot Write Up
## Details:
Jeopardy style CTF
Category: Reverse Engineering
Comments:
We have trapped one of Melon Eusk's GaussBots™, given the right key we might get some Dogecoins out of them! But they are being evasive...
## Write up:
This program seemed to load the code in at runtime so I took a memory dump at runtime and found the following function:
```c
void __noreturn sub_565D503C()
{
v0 = sys_read(0, v12, 0x1Fu);
strcpy(v11, "flag{pr0gram-inside-4-pr0gram}");
v2 = v1;
v3 = v11;
v4 = 30;
do
{
if ( !v4 )
break;
v5 = *v2++ == (unsigned __int8)*v3++;
--v4;
}
while ( v5 );
if ( !v4 )
{
strcpy(v10, "Wait, that is the password for the dogecoin vault... How?\n");
v6 = sys_write(1, v10, 0x3Au);
v7 = sys_exit(0);
}
strcpy(&v10[28], "I'll never tell you my secrets\n");
v8 = sys_write(1, &v10[28], 0x1Fu);
v9 = sys_exit(0);
}
```
The flag was:
```
flag{pr0gram-inside-4-pr0gram}
```
