The NOP block technique can be used o increase chances of a successful
exploitation. The preferred instruction for NOP operation in Power/CBEA
based processors is oril r0,r0,0 (0x60000000). However, the instruction
mr r31,r31 (0x7ffffb78) is used in order to avoid zeros.
With this information, a moderated guess of heap address that pos-
sibly will contain a NOP instruction from the NOP block can be done
(0x10011808)
The NOP block technique can be used o increase chances of a successful
exploitation. The preferred instruction for NOP operation in Power/CBEA
based processors is oril r0,r0,0 (0x60000000). However, the instruction
mr r31,r31 (0x7ffffb78) is used in order to avoid zeros.
With this information, a moderated guess of heap address that pos-
sibly will contain a NOP instruction from the NOP block can be done
(0x10011808)