Sassi, who was named man-of-the-match in his country's quarter-final match against Madagascar, believes Tunisia have peaked at the right time and he is equally confident they can successfully push for a berth in the final against Senegal on Sunday.
“After three difficult matches in the first round, we gained momentum in the knockout stages,” Sassi told the media in Egypt.
"The bottom line for us now is qualifying from the semi-finals, 15 years since we last did that."
Before getting the big win over Madagascar, Tunisia had drawn all their other games in Egypt, against Angola, Mali, and Mauritania and Ghana.
Coach Giresse’s men required penalty kicks to get past the Black Stars in the Round of 16 after both teams had played out a 1-1 draw in 120 minutes.
Tunisia have qualified for the final only twice: against Zambia during 1996 edition (4-2) and against Nigeria in 2004 in their last appearance at this stage of the competition, on their way to win their only one continental title (1-1 a.e.t., 5-3 pen).