WinDBG - how to set all exception to be passed into app?

Question

How can I set all exceptions behavior to pass to application and not appear in debugger?

I'm using IDA Pro 6.6 and WinDbg.

Answer 1

It's a bit awkward to do that for all exception types at once

.foreach(exc {sx}) {.catch{sxd ${exc}}}

What it does:

• {sx}: list all exception types (and current settings, which you actually don't want)
• exc: assign a variable
• .foreach(...) {...}: cut it into pieces of single words and execute a command
• sxd ${exc}: disable whatever is in variable exc
• .catch{...}: ignore all the error messages which come from the settings information

The advantage of the above approach is that it is WinDbg version independent. If new exception codes are introduced, it will still work.

Processing of unwanted text can be avoided with PyKd. Save the following script into a file sdx.py and run !py sxd.py:

from pykd import *

sx = dbgCommand("sx")
for s in sx.splitlines():
    ex = s[:4]
    if  not ex=="" or ex.isspace():
        print("sxd "+ex)
        dbgCommand("sxd "+ex)

Another option is processing all the exceptions manually:

.foreach(exc {.echo "ct et cpr epr ld ud ser ibp iml out av asrt aph bpe bpec eh clr clrn cce cc dm dbce gp ii ip dz iov ch hc lsq isc 3c svh sse ssec sbo sov vs vcpp wkd rto rtt wob wos *"}) {.catch{sxd ${exc}}}

However, if there are new exception codes in WinDbg, you have to add them to the .echo command.