Yuri Ushakov said their admission demands the coordination of a working memorandum and the two countries also need to join 28 key documents of the group.
As of now, India along with Afghanistan, Iran, Mongolia and Pakistan has the observer status in the organisation which mainly focused on the anti-terrorism cooperation among the member states.
Russia said on Tuesday that the G8 was in agreement in rejecting North Korea's recent provocative behaviour and urged all sides to pursue diplomacy to calm down the increasingly tense situation in Northeast Asia.
The head of a group negotiating Russia's accession to the World Trade Organisation has instructed its members to try to finish the process by the end of 2011, a Russian source close to the talks told Reuters.
The Group of Eight leaders agreed on Friday that the global economy recovery was becoming more "self-sustained", although higher commodity prices were hampering further growth.
Group of Eight leaders will approve billions of dollars in aid to new Arab democracies on Friday as they end a summit by endorsing a programme aimed at fostering changes sweeping North Africa and the Middle East.
The Group of Eight leaders, meeting in France on Thursday, piled pressure on Greece to sort out its debt crisis, saying the debts of some European governments were weighing down a labouring world economy.
Google, Facebook warn on Internet rules at e-G8
Leaders of the Group of Eight began gathering in France on Thursday to endorse aid to new Arab democracies, but wrangling among Western and developing economies over who runs the IMF may take up much of their time.
Leaders from the Group of Eight top industrial nations will meet in the French seaside town of Deauville on May 26 and 27 for an annual summit.