KABUL, Afghanistan — For the past few months, possibly the most intriguing poker game in Kabul has been taking place in the sprawling pink sitting room of the man at the center of one of the most public corruption scandals in the world, the near collapse of Kabul Bank.

The players include people tied to President Hamid Karzai’s inner circle, many of whom have profited from the crony capitalism that has come to define Afghanistan’s economic order, and nearly brought down Kabul Bank. The game’s stakes “aren’t too big — a few thousand dollars up or down,” one of the participants said.

Betting thousands of dollars a night in a country where most families live off a few hundred dollars a year would seem like a bad play for Sherkhan Farnood, the founder and former chairman of Kabul Bank, the country’s biggest. His assets are supposed to be frozen, and he is still facing the threat of prosecution over a scandal that could end up costing the Afghan government — and, by extension, the Western countries that pay most of its expenses — almost $900 million, a sum that nearly equals the government’s total annual revenues.

But Mr. Farnood, who in 2008 won about $143,000 at a World Series of Poker event in Europe, appears to know a good wager when he sees one. Despite years of urging and oversight by American advisers, Mr. Karzai’s government has yet to prosecute a high-level corruption case. And now many American officials say that they have little expectation that Mr. Farnood’s case will prove to be the exception — or that Washington will try to do much about it, especially after violent anti-American protests in recent weeks have sowed fresh doubts in the Obama administration over the viability of the mission in Afghanistan.