One potential method to reveal a statically generated C string at compile time using FFI is to define a function in the C code that returns a pointer to the string, and then use FFI to call that function from within the target language. For example, in C code you could define a function like this:
const char* getMyString() {
return "This is my string";
}
Then, in a target language like Python, you could use FFI to call this function and retrieve the string:
import ctypes
mylib = ctypes.CDLL('./mylib.so')
c_string = mylib.getMyString()
print(ctypes.string_at(c_string))
This would output:
b'This is my string'
Here, ctypes.CDLL
loads the compiled C library, and mylib.getMyString()
calls the function defined in the C code to retrieve the C string. The ctypes.string_at
function is then used to convert the C string into a Python string that can be printed or manipulated in other ways.
Asked: 2023-07-16 06:59:15 +0000
Seen: 12 times
Last updated: Jul 16 '23