I have a library of ~65MB which uses this "technique" as a kind of PIC.
First, it gets some kind of base address (it is always the same):
0x00708497 e800000000 call 0x70849c 0x0070849c 5b pop ebx 0x0070849d 81c3ac442601 add ebx, 0x12644ac
And then it's used to reference strings or global variables:
0x007084bc 8d832e29a8ff lea eax, [ebx - 0x57d6d2]
So, is there any analysis command which could find these references?