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WinAppDbg - Windows application debugging engine
Package winappdbg :: Module breakpoint :: Class PageBreakpoint
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Class PageBreakpoint

source code

Page access breakpoint (using guard pages).

See Also: Debug.watch_buffer

Instance Methods [hide private]
 
__init__(self, address, pages=1, condition=True, action=None)
Page breakpoint object.		 source code
int
get_size_in_pages(self)
Returns: The size in pages of the breakpoint.		 source code
 
__set_bp(self, aProcess)
Sets the target pages as guard pages.		 source code
 
__clear_bp(self, aProcess)
Restores the original permissions of the target pages.		 source code
 
__repr__(self)
repr(x) (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
tuple( int, int )
get_span(self)
Returns: Starting and ending address of the memory range covered by the breakpoint. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __str__, __subclasshook__

    State machine
 
disable(self, aProcess, aThread)
Transition to DISABLED state.		 source code
 
enable(self, aProcess, aThread)
Transition to ENABLED state.		 source code
 
one_shot(self, aProcess, aThread)
Transition to ONESHOT state.		 source code
 
running(self, aProcess, aThread)
Transition to RUNNING state.		 source code
int
get_state(self)
Returns: The current state of the breakpoint (DISABLED, ENABLED, ONESHOT, RUNNING). (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
str
get_state_name(self)
Returns: The name of the current state of the breakpoint. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
 
hit(self, event)
Notify a breakpoint that it's been hit. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool
is_disabled(self)
Returns: True if the breakpoint is in DISABLED state. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool
is_enabled(self)
Returns: True if the breakpoint is in ENABLED state. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool
is_one_shot(self)
Returns: True if the breakpoint is in ONESHOT state. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool
is_running(self)
Returns: True if the breakpoint is in RUNNING state. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
    Information
int
get_address(self)
Returns: The target memory address for the breakpoint. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
int
get_size(self)
Returns: The size in bytes of the breakpoint. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool
is_here(self, address)
Returns: True if the address is within the range of the breakpoint. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
    Conditional breakpoints
bool
eval_condition(self, event)
Evaluates the breakpoint condition, if any was set. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool, function
get_condition(self)
Returns: Returns the condition callback for conditional breakpoints. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool
is_conditional(self)
Returns: True if the breakpoint has a condition callback defined. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool
is_unconditional(self)
Returns: True if the breakpoint doesn't have a condition callback defined. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
 
set_condition(self, condition=True)
Sets a new condition callback for the breakpoint. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
    Automatic breakpoints
bool, function
get_action(self)
Returns: Returns the action callback for automatic breakpoints. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool
is_automatic(self)
Returns: True if the breakpoint has an action callback defined. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
bool
is_interactive(self)
Returns: True if the breakpoint doesn't have an action callback defined. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
 
run_action(self, event)
Executes the breakpoint action callback, if any was set. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
 
set_action(self, action=None)
Sets a new action callback for the breakpoint. (Inherited from winappdbg.breakpoint.Breakpoint)		 source code
Class Variables [hide private]
str typeName = 'page breakpoint'
User friendly breakpoint type string.
dict { int → str } stateNames = {0: 'disabled', 1: 'enabled', 2: 'one shot', 3: '...
User-friendly names for each breakpoint state. (Inherited from winappdbg.breakpoint.Breakpoint)
    Breakpoint states
int DISABLED = 0
Disabled → Enabled, OneShot (Inherited from winappdbg.breakpoint.Breakpoint)
int ENABLED = 1
Enabled → Running, Disabled (Inherited from winappdbg.breakpoint.Breakpoint)
int ONESHOT = 2
OneShot → Disabled (Inherited from winappdbg.breakpoint.Breakpoint)
int RUNNING = 3
Running → Enabled, Disabled (Inherited from winappdbg.breakpoint.Breakpoint)
Properties [hide private]

Inherited from object: __class__

Method Details [hide private]

__init__(self, address, pages=1, condition=True, action=None)
(Constructor)

source code 

Page breakpoint object.

Parameters:
  • address (int) - Memory address for breakpoint.
  • address (int) - Size of breakpoint in pages.
  • condition (function) - (Optional) Condition callback function.
  • action (function) - (Optional) Action callback function.
  • pages (int)
Overrides: object.__init__

See Also: Breakpoint.__init__

get_size_in_pages(self)

source code 
Returns: int
The size in pages of the breakpoint.

__set_bp(self, aProcess)

source code 

Sets the target pages as guard pages.

Parameters:
  • aProcess (Process) - Process object.

__clear_bp(self, aProcess)

source code 

Restores the original permissions of the target pages.

Parameters:
  • aProcess (Process) - Process object.

disable(self, aProcess, aThread)

source code 

Transition to DISABLED state.

  • When hit: OneShot → Disabled
  • Forced by user: Enabled, OneShot, Running → Disabled
  • Transition from running state may require special handling by the breakpoint implementation class.
Parameters:
  • aProcess - Process object.
  • aThread - Thread object.
Overrides: Breakpoint.disable
(inherited documentation)

enable(self, aProcess, aThread)

source code 

Transition to ENABLED state.

  • When hit: Running → Enabled
  • Forced by user: Disabled, Running → Enabled
  • Transition from running state may require special handling by the breakpoint implementation class.
Parameters:
  • aProcess - Process object.
  • aThread - Thread object.
Overrides: Breakpoint.enable
(inherited documentation)

one_shot(self, aProcess, aThread)

source code 

Transition to ONESHOT state.

  • Forced by user: Disabled → OneShot
Parameters:
  • aProcess - Process object.
  • aThread - Thread object.
Overrides: Breakpoint.one_shot
(inherited documentation)

running(self, aProcess, aThread)

source code 

Transition to RUNNING state.

  • When hit: Enabled → Running
Parameters:
  • aProcess - Process object.
  • aThread - Thread object.
Overrides: Breakpoint.running
(inherited documentation)

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