> For the complete documentation index, see [llms.txt](https://alham-rizvi.gitbook.io/alhamrizvi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://alham-rizvi.gitbook.io/alhamrizvi/picoctf-writeups/picoctf/reverse-engineering/gdb-baby-step-4.md).

# GDB baby step 4

This was a straightforward reverse engineering challenge.

First, I analyzed the `main` function using a disassembler. I noticed that it initializes a value `0x28e` and passes it as an argument to another function called `func1`.

At first glance, it might seem like `0x28e` is important, but it is actually just the input to `func1`, not the final answer.

To find the actual constant, I disassembled `func1`:

```asm
imul   $0x3269, %eax, %eax
```

This instruction multiplies the value in `eax` by `0x3269`.

This means the constant we are looking for is:

```id="8o5l2y"
0x3269
```

```
picoCTF{12905}
```


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