Protostar stack4

About

Stack4 takes a look at overwriting saved EIP and standard buffer overflows.

Hints:

• A variety of introductory papers into buffer overflows may help.
• gdb lets you do "run < input"
• EIP is not directly after the end of buffer, compiler padding can also increase the size.

This level is at /opt/protostar/bin/stack4

Source code

 #include <stdlib.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <string.h>
 
 void win()
 {
   printf("code flow successfully changed\n");
 }

int main(int argc, char **argv)
{
  char buffer[64];

  gets(buffer);
}

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