He called an Uber using his own account, a move police later uncovered when investigating who was behind the crimes.
The 21-year-old and accomplice Thomas Stojanovski, 20, on Thursday pleaded guilty to multiple charges over the trail of destruction they left through Sydney's east on November 20.
Ten cars were graffitied, two were burned and four buildings were vandalised in the 41-minute rampage in Woollahra, a heartland for Australia's Jewish community.
"F*** Israel" and "PKK coming" - referencing the terror-designated Kurdistan Workers' Party - were among the slurs emblazoned across the cars and buildings.
Multiple slurs also misspelled the word "f**k"
Farhat did the vast majority of the damage while Stojanovski assisted him by shining a torch or holding a suitcase containing the jerry cans purchased earlier in the night, according to a statement of agreed facts.
CCTV also showed Farhat buying fuel, a lighter and a box of tissues at a service station before driving to Woollahra.
A Ford Ranger valued at more than $80,000 was graffitied and then set alight by the two men, with the subsequent fire causing an adjacent car to have its rear lights and electrics melted.
Woollahra Fire Station was also targeted in the attack with "PKK coming" sprayed on a side wall, along with two outdoor tables in the courtyard of a nearby restaurant and the walls of two apartment blocks.
The restaurant, Chiswick, is operated by famed chef Matt Moran.
The two men left Woollahra in an Uber ordered from Farhat's account 10 minutes before emergency services were called to put out the blaze, where a can of spray paint and jerry can were found.
Stojanovski then used his own account to order another Uber to return home in Sydney's south.
There is no indication in the facts as to why the two men carried out the attack. But the court previously heard Farhat might have neck and throat tattoos in support of terrorist group Hezbollah.
"It demonstrates, at least on the part of the alleged co-offender an interest in such topics, if nothing else," Stojanovski's barrister Peter Lange told the NSW Supreme Court previously.
The lawyer suggested his own client had no ideological motivation for the attack, and was "presumably immature" and "going along".
The vandalism was among a spate of anti-Semitic incidents in Sydney, including an arson attempt on a synagogue and the targeting of a prominent Jewish leader's former home.
Iran orchestrated at least two anti-Semitic attacks in Australia at a similar time, Australia's national security service ASIO said in August.
Crown prosecutor Lucia Cohen argued on Thursday there was no possibility of a sentence other than full-time imprisonment for Farhat, who is remanded in custody.
He will be sentenced on November 13 while Stojanovski, who is on bail, will be sentenced on November 21.
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