# Level1

Using ghidra, we can decompile the code and see that it fills a buffer of 76 bytes using the deprecated (unsafe) function `gets`.
We can exploit this call to overflow the stack and call another function.
In the binary, there is a function `run()` located at address 0x8048444 that runs `/bin/sh`.
To exploit this, we can use this sh command with this inline python script:
`(print('a'*76 + "\x44\x84\x04\x08"); cat) | ./level1`
This will print `run()`'s address on the stack, after the buffer being written to by `gets`, resulting in a call to the function.
The parenthesis and the `cat` are mandatory to make it blocking and keep the shell opened.