A more thorough explanation:

PER FAS AUT NEFAS

Per fas aut nefas is a Latin phrase that means "by lawful or unlawful means."

1. The rebels were determined to overthrow the government per fas aut nefas, even if it meant resorting to violence.

2. The company was willing to do whatever it takes to win the contract, per fas aut nefas, even if it meant breaking the law.

The examples illustrate the definition of per fas aut nefas, which means that something can be achieved through either legal or illegal means. In the first example, the rebels were willing to use any means necessary to overthrow the government, even if it meant resorting to violence, which is illegal. In the second example, the company was willing to break the law to win the contract, which is also illegal. Both examples show that per fas aut nefas can be used to describe situations where people are willing to do whatever it takes to achieve their goals, regardless of whether it is legal or not.