Armadillo 3.00a - 3.61, Ollydbg endless loop?

[friedo]

Hello.

Have an application protected by armadillo with olly detection.
With hidden IsDebuggerPresent and renamed olly.exe it runs in debug environment but strange thing is that if i set a breakpoint somewhere (for example bpa writeprocessmemory or bpa waitfordebugevent) the client runs in an endless loop?!

Did anybody have this phaenomen ever had before?!
(Because i think it´s not an ollydbg problem but some sort of debug protection in this armadillo. But i did not find anything about...)

Kindest Regards,
friedo

[MrAnonymous]

When your starting your Arma target dont set ANY breakpoints at first, in Olly just hit F9 to start you'll get a prefix lock exception. Now its safe to set any break points you want and you wont be thrown into an endless loop.