Topic created on: October 13, 2005 16:52 CDT by leadzero .

I need help on how to attack a VB app. The app in question uses a file distibuted with the file as input and I need to figure out how its decoding the file. I know it has to be something very simple (like ROT13 simple). The file shows clear structure and appears to have CR/LF sequences. Analysis of the lines of the file show structure (like every other line for a section beginning with the same string of characters). I'm working on trying to break the encoding, but an easier method would obviously be to debug the app and watch it use the data. However, it's a VB app.

So far I've been unable to find anything on how to debug a VB app. I've done dozens of executables with Olly and IDA but this is the first time I've had to do a VB program. (I'm used to doing virus's and trojans, not spyware!) I attempted to break on every call to OpenFile[AW] and was able to break on the call opening the file in question, but that didn't really help much.

The app in question is adware, everyone hates adware :) any help would be appreciated.