Memprof: A Ruby level memory profiler

http://timetobleed.com/memprof-a-ruby-level-memory-profiler/

by ice799 • 17 years ago

70 3 17 years ago

antirez• 17 years ago

Wonderful example on how to turn an hack (poking inside the memory to insert a trampoline) into a working useful product.

EDIT: btw it should be possible to do the trick even in 90% of stripped binaries. Just calculate the right offsets offline and if the bin is stripped try this binary against a table (consisting of offsets -> first N bytes of "famous" binaries). So at least it's possible to add support for "notable" stripped binaries like mac os x default ruby install, debian, ubuntu, and so forth.

hypermatt• 17 years ago

This guy has reinstated my love of hacking binaries, we used to do this alot when we were rewriting memory of MMORPGs like Asheron's Call. Never thought about doing it for legitimate reasons.

xal• 17 years ago

indeed. Decal was such an amazing technical achievement in those days. Really years ahead of it's time.

Memprof: A Ruby level memory profiler

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