Tuesday, 13 October 2009

crackme12 - bruteforce 2

Today I thought I had managed to find the correct byte to XOR the crackme with. I made some progress, until the execution stopped with an illegal access, thus everything I "learnt" about the crackme today is probably useless to its solution.
Despite all this, after the cycle that XOR's the binary, everything looks good, but while stepping through the changed instructions the disassembly apparently changes (I'm yet to find a decent explanation for this) and I get an instruction that raises the afore mentioned exception.

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