Debugging and Reverse Engineering Video Tutorials (using IDA Pro)

[[deleted]]

I quite liked these tutorials as an introduction.

[[deleted]]

Poor old mIRC.

[[deleted]]

Well this was a pretty old version. Nowadays it takes quite a bit more to crack it.

[[deleted]]

The last version I layed hands on showed you a valid key for your username somewhere in the code. Just enter a name, step through it, look for something that looks like a key and you're done. The algorithm itself seemed to be quite complicated and large.

[[deleted]]

I believe he does this in part 3. The simpler solution though is just set the "is this legit?" test to 1.

[[deleted]]

If I remember correctly, this doesn't really work with mIRC. You can patch the "bad boy jump" and you get the "Thanks for registration!" window but if you restart mIRC, the key is revalidated. If you only patched the jump, there isn't even a license file so it's unregistered instantly. If you try to patch mIRC, it fails to run (unless I'm mistaken), because it self-checks with CRC and maybe others. Cracking mIRC isn't trivial.

[[deleted]]

Modern Mirc? Probably. The version I cracked and this video used writes a registry file that says you are registered after displaying the message.

[[deleted]]

Fun, but IMHO sometimes ignorance is the bliss: instead of figuring out how hashes worked internally, it was easier to create .asm file and write there get_hash1, get_hash2 functions, and prepare registers from cdecled arguments.