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Topic created on: November 7, 2007 17:11 CST by black13 .

can the immunity debugger + python plugin trap registry function calls in advapi32.dll ? and can i log the arguments passed to these function calls?
thanks

jms		November 7, 2007 23:56.58 CST
Yep, determine what calls you want to trap, and set breakpoints on them. I don't have time to whip up a PyCommand right now but here is the pseudocode: 1) Set LoggingBPHooks on all of the registry functions you want to hook. 2) Inside the run() function in your BPHook class, have it do a call stack retrieval and it will have fully decoded function parameters. Just look at some examples in the PyCommands directory for hooking, and use the documentation for doing the call stack decoding. PS http://forum.immunityinc.com/index.php?topic=88.msg317#msg317

rbw		November 9, 2007 19:58.40 CST
#!/usr/bin/env python import immlib from immlib import LogBpHook class MyOwnHook(LogBpHook): def __init__(self): LogBpHook.__init__(self) def run(self, regs): imm = immlib.Debugger() callstack = imm.callStack() for a in callstack: imm.Log("Address: %08x - Stack: %08x - Procedure: %s - frame: %08x - called from: %08x" %( a.address,a.stack,a.procedure,a.frame,a.calledfrom)) def usage(imm): imm.Log("!hookapi module api") imm.Log("!hookapi advapi32.dll RegQueryValueExA") def main(args): imm = immlib.Debugger() if not args: usage(imm) return "Wrong Arguments (Check Log Windows for the usage information)" module_name = args[0] api_name = args[1] imm.Log("module name:%s api name:%s" % (module_name, api_name)) module = imm.getModule(module_name) hook = MyOwnHook() f = imm.getAddress(api_name) hook.add("hookit", f)

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