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Omar Santos 2019-01-16 14:29:29 -05:00 committed by GitHub
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buffer_overflow_example/README.md
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@ -29,3 +29,16 @@ int main()
``` ```
The `char buffer[20];` is a really bad idea. The rest will be demonstrated in the course. The `char buffer[20];` is a really bad idea. The rest will be demonstrated in the course.
You can compile this code or use the already-compiled binary [here](https://github.com/The-Art-of-Hacking/h4cker/raw/master/buffer_overflow_example/vuln_program).
For 32 bit systems you can use [gcc](https://www.gnu.org/software/gcc/) as shown below:
```
gcc vuln.c -o vuln -fno-stack-protector
```
For 64 bit systems
```
gcc vuln.c -o vuln -fno-stack-protector -m32
```
`-fno-stack-protector` disabled the stack protection. Smashing the stack is now allowed. `-m32` made sure that the compiled binary is 32 bit. You may need to install some additional libraries to compile 32 bit binaries on 64 bit machines.