Decompilation

class DecompilerDAD:
    def __init__(self, vm, vmx):
        """
        Initialize DAD decompiler.
        
        Parameters:
        - vm: DEX object containing bytecode
        - vmx: Analysis object with cross-references
        """

def get_source_class(self, _class) -> str:
    """
    Decompile entire class to source code.
    
    Parameters:
    - _class: ClassDefItem to decompile
    
    Returns:
    Complete Java-like source code for class
    """

def get_source_method(self, method) -> str:
    """
    Decompile single method to source code.
    
    Parameters:
    - method: EncodedMethod to decompile
    
    Returns:
    Java-like source code for method
    """

def display_source(self, method) -> None:
    """
    Print decompiled method source to stdout.
    
    Parameters:
    - method: EncodedMethod to display
    """

def get_ast(self, method):
    """
    Get Abstract Syntax Tree for method.
    
    Parameters:
    - method: EncodedMethod to analyze
    
    Returns:
    AST representation of method
    """

class DvClass:
    def __init__(self, class_obj, vmx):
        """
        Initialize decompiled class wrapper.
        
        Parameters:
        - class_obj: ClassDefItem object
        - vmx: Analysis object
        """

def get_source(self) -> str:
    """
    Get complete source code for class.
    
    Returns:
    Java-like source code including all methods and fields
    """

def get_name(self) -> str:
    """Return class name."""

def get_superclass_name(self) -> str:
    """Return superclass name."""

def get_interfaces(self) -> list[str]:
    """Return list of implemented interface names."""

def get_access_flags_string(self) -> str:
    """Return access flags as readable string."""

def get_methods(self) -> list:
    """
    Get all decompiled methods in class.
    
    Returns:
    List of DvMethod objects
    """

def get_fields(self) -> list:
    """
    Get all fields in class.
    
    Returns:
    List of field objects with source information
    """

def get_method(self, name: str, descriptor: str = None):
    """
    Get specific decompiled method by name.
    
    Parameters:
    - name: Method name
    - descriptor: Method descriptor (optional)
    
    Returns:
    DvMethod object or None if not found
    """

class DvMethod:
    def __init__(self, method_obj, vmx):
        """
        Initialize decompiled method wrapper.
        
        Parameters:
        - method_obj: EncodedMethod object
        - vmx: Analysis object
        """

def get_source(self) -> str:
    """
    Get source code for method.
    
    Returns:
    Java-like source code for method implementation
    """

def get_name(self) -> str:
    """Return method name."""

def get_descriptor(self) -> str:
    """Return method descriptor."""

def get_class_name(self) -> str:
    """Return containing class name."""

def get_access_flags_string(self) -> str:
    """Return access flags as readable string."""

def is_external(self) -> bool:
    """Return True if method is external."""

def is_android_api(self) -> bool:
    """Return True if method is Android API."""

def get_method_analysis(self):
    """
    Get MethodAnalysis object.
    
    Returns:
    MethodAnalysis with cross-references and control flow
    """

def get_length(self) -> int:
    """Return method code length."""

def show_source(self) -> None:
    """Print method source code to stdout."""

def get_ast(self):
    """
    Get Abstract Syntax Tree representation.
    
    Returns:
    AST node representing method structure
    """

def get_params_type(self) -> list[str]:
    """
    Get parameter types.
    
    Returns:
    List of parameter type strings
    """

def get_information(self) -> dict:
    """
    Get detailed method information.
    
    Returns:
    Dictionary with method metadata
    """

def get_locals(self) -> list:
    """Get local variable information."""

def get_arguments(self) -> list:
    """Get method argument information."""

class DecompilerOptions:
    def __init__(self):
        """Initialize decompiler configuration."""
    
    def set_pretty_show(self, enable: bool) -> None:
        """
        Enable/disable pretty formatting.
        
        Parameters:
        - enable: True to enable pretty printing
        """
    
    def set_colors(self, enable: bool) -> None:
        """
        Enable/disable syntax coloring.
        
        Parameters:
        - enable: True to enable colors
        """
    
    def set_show_exceptions(self, enable: bool) -> None:
        """
        Enable/disable exception information.
        
        Parameters:
        - enable: True to show exception details
        """
    
    def set_escape_unicode(self, enable: bool) -> None:
        """
        Enable/disable Unicode escaping.
        
        Parameters:
        - enable: True to escape Unicode characters
        """

def set_decompiler_options(self, options: dict) -> None:
    """
    Set advanced decompiler options.
    
    Parameters:
    - options: Dictionary of option name to value mappings
    """

def get_decompiler_type(self) -> str:
    """Return decompiler type identifier."""

def process_folder(self, input_folder: str, output_folder: str) -> None:
    """
    Batch decompile entire folder.
    
    Parameters:
    - input_folder: Path to folder containing DEX/APK files
    - output_folder: Path to output decompiled source files
    """

class ASTNode:
    def get_type(self) -> str:
        """Return AST node type."""
    
    def get_children(self) -> list:
        """Return list of child nodes."""

class ExpressionNode(ASTNode):
    """AST node representing expressions."""
    
    def get_value(self) -> object:
        """Return expression value."""

class StatementNode(ASTNode):
    """AST node representing statements."""
    
    def is_compound(self) -> bool:
        """Return True if compound statement."""

class IRForm:
    """Base class for all intermediate representation forms."""
    
    def get_type(self) -> str:
        """Return IR form type identifier."""
    
    def accept(self, visitor) -> None:
        """Accept visitor for traversal patterns."""

class Constant(IRForm):
    """Constant value representation in IR."""
    
    def __init__(self, value: object, const_type: str):
        """
        Initialize constant IR form.
        
        Parameters:
        - value: The constant value
        - const_type: Type of the constant
        """
    
    def get_value(self) -> object:
        """Return the constant value."""
    
    def get_const_type(self) -> str:
        """Return the constant type."""

class Variable(IRForm):
    """Variable reference representation in IR."""
    
    def __init__(self, name: str, var_type: str):
        """
        Initialize variable IR form.
        
        Parameters:
        - name: Variable name
        - var_type: Variable type
        """
    
    def get_name(self) -> str:
        """Return variable name."""
    
    def get_var_type(self) -> str:
        """Return variable type."""

class BinaryOperation(IRForm):
    """Binary operation representation in IR."""
    
    def __init__(self, operator: str, left: IRForm, right: IRForm):
        """
        Initialize binary operation IR form.
        
        Parameters:
        - operator: Operation operator
        - left: Left operand
        - right: Right operand
        """
    
    def get_operator(self) -> str:
        """Return operation operator."""
    
    def get_left_operand(self) -> IRForm:
        """Return left operand."""
    
    def get_right_operand(self) -> IRForm:
        """Return right operand."""

class AssignExpression(IRForm):
    """Assignment expression representation in IR."""
    
    def __init__(self, target: Variable, value: IRForm):
        """
        Initialize assignment expression.
        
        Parameters:
        - target: Assignment target variable
        - value: Value to assign
        """
    
    def get_target(self) -> Variable:
        """Return assignment target."""
    
    def get_value(self) -> IRForm:
        """Return assignment value."""

class InvokeInstruction(IRForm):
    """Method invocation representation in IR."""
    
    def __init__(self, method_name: str, args: list[IRForm], invoke_type: str):
        """
        Initialize method invocation.
        
        Parameters:
        - method_name: Name of invoked method
        - args: List of arguments
        - invoke_type: Type of invocation
        """
    
    def get_method_name(self) -> str:
        """Return method name."""
    
    def get_arguments(self) -> list[IRForm]:
        """Return argument list."""
    
    def get_invoke_type(self) -> str:
        """Return invocation type."""

class FieldAccess(IRForm):
    """Field access representation in IR."""
    
    def __init__(self, field_name: str, instance: IRForm = None):
        """
        Initialize field access.
        
        Parameters:
        - field_name: Name of accessed field
        - instance: Instance object (None for static fields)
        """
    
    def get_field_name(self) -> str:
        """Return field name."""
    
    def get_instance(self) -> IRForm:
        """Return instance object (None for static)."""

class BasicBlock:
    """Represents a basic block in control flow analysis."""
    
    def __init__(self, block_id: int):
        """
        Initialize basic block.
        
        Parameters:
        - block_id: Unique identifier for the block
        """
    
    def get_id(self) -> int:
        """Return block identifier."""
    
    def get_instructions(self) -> list[IRForm]:
        """Return list of IR instructions in this block."""
    
    def get_predecessors(self) -> list:
        """Return list of predecessor blocks."""
    
    def get_successors(self) -> list:
        """Return list of successor blocks."""
    
    def add_instruction(self, instr: IRForm) -> None:
        """Add instruction to this block."""

class StatementBlock(BasicBlock):
    """Basic block containing statement instructions."""
    
    def get_statements(self) -> list[IRForm]:
        """Return list of statement IR forms."""

class ConditionalBlock(BasicBlock):
    """Basic block with conditional branching."""
    
    def get_condition(self) -> IRForm:
        """Return conditional expression."""
    
    def get_true_block(self) -> BasicBlock:
        """Return block for true branch."""
    
    def get_false_block(self) -> BasicBlock:
        """Return block for false branch."""

class LoopBlock(BasicBlock):
    """Basic block representing loop structures."""
    
    def get_loop_condition(self) -> IRForm:
        """Return loop condition expression."""
    
    def get_loop_body(self) -> list[BasicBlock]:
        """Return blocks in loop body."""
    
    def is_while_loop(self) -> bool:
        """Return True if while loop."""
    
    def is_for_loop(self) -> bool:
        """Return True if for loop."""

class TryBlock(BasicBlock):
    """Basic block for exception handling structures."""
    
    def get_try_body(self) -> list[BasicBlock]:
        """Return blocks in try body."""
    
    def get_catch_blocks(self) -> list[BasicBlock]:
        """Return catch handler blocks."""
    
    def get_finally_block(self) -> BasicBlock:
        """Return finally block (if any)."""
    
    def get_exception_types(self) -> list[str]:
        """Return list of handled exception types."""

class ReturnBlock(BasicBlock):
    """Basic block containing return statements."""
    
    def get_return_value(self) -> IRForm:
        """Return the returned value expression."""
    
    def has_return_value(self) -> bool:
        """Return True if returns a value."""

from androguard.decompiler.instruction import IRForm, Constant, Variable, BinaryOperation
from androguard.decompiler.basic_blocks import BasicBlock, StatementBlock

# Create IR forms programmatically
const_5 = Constant(5, "int")
var_x = Variable("x", "int")
add_op = BinaryOperation("+", var_x, const_5)

print(f"IR Expression: {var_x.get_name()} {add_op.get_operator()} {const_5.get_value()}")

# Create basic blocks
block = StatementBlock(1)
block.add_instruction(add_op)

print(f"Block {block.get_id()} has {len(block.get_instructions())} instructions")

from androguard.decompiler.basic_blocks import ConditionalBlock, LoopBlock

# Analyze conditional structures
cond_block = ConditionalBlock(2)
condition = cond_block.get_condition()

if condition:
    true_path = cond_block.get_true_block()
    false_path = cond_block.get_false_block()
    print(f"Conditional block branches to {true_path.get_id()} or {false_path.get_id()}")

# Analyze loop structures
loop_block = LoopBlock(3)
if loop_block.is_while_loop():
    condition = loop_block.get_loop_condition()
    body_blocks = loop_block.get_loop_body()
    print(f"While loop with {len(body_blocks)} body blocks")

from androguard.decompiler.basic_blocks import TryBlock

try_block = TryBlock(4)
exception_types = try_block.get_exception_types()

print(f"Try block handles {len(exception_types)} exception types:")
for exc_type in exception_types:
    print(f"  - {exc_type}")

# Get catch handlers
catch_blocks = try_block.get_catch_blocks()
for i, catch_block in enumerate(catch_blocks):
    print(f"Catch block {i+1}: {catch_block.get_id()}")

# Check for finally block
finally_block = try_block.get_finally_block()
if finally_block:
    print(f"Finally block: {finally_block.get_id()}")
    
    def accept(self, visitor) -> None:
        """Accept visitor for AST traversal."""

class MethodNode(ASTNode):
    def get_body(self):
        """Return method body node."""
    
    def get_parameters(self) -> list:
        """Return parameter nodes."""
    
    def get_return_type(self) -> str:
        """Return return type string."""

class ClassNode(ASTNode):
    def get_methods(self) -> list:
        """Return method nodes."""
    
    def get_fields(self) -> list:
        """Return field nodes."""
    
    def get_superclass(self) -> str:
        """Return superclass name."""

from androguard.misc import AnalyzeAPK

# Analyze APK with decompilation
apk, dex_objects, dx = AnalyzeAPK("app.apk")

# Get all decompiled classes
print(f"Decompiling {len(dex_objects)} DEX files...")

for dex in dex_objects:
    classes = dex.get_classes()
    print(f"Classes in DEX: {len(classes)}")
    
    # Decompile each class
    for class_obj in classes[:5]:  # First 5 classes
        class_name = class_obj.get_name()
        print(f"\nDecompiling class: {class_name}")
        
        # Create DvClass object
        dv_class = DvClass(class_obj, dx)
        
        # Get source code
        source_code = dv_class.get_source()
        print(f"Source length: {len(source_code)} characters")
        
        # Save to file
        filename = class_name.replace('/', '_').replace(';', '') + '.java'
        with open(filename, 'w') as f:
            f.write(source_code)

# Find and decompile specific methods
oncreate_methods = dx.find_methods(method_name="onCreate")

for method_analysis in oncreate_methods:
    method_obj = method_analysis.get_method()
    
    print(f"\nDecompiling: {method_analysis.get_class_name()}.{method_analysis.get_name()}")
    
    # Create DvMethod object
    dv_method = DvMethod(method_obj, dx)
    
    # Get decompiled source
    source = dv_method.get_source()
    print("Decompiled source:")
    print(source)
    
    # Get method information
    info = dv_method.get_information()
    print(f"Method info: {info}")

# Find MainActivity and decompile completely
main_activities = dx.find_classes(r".*MainActivity.*")

for class_analysis in main_activities:
    class_obj = class_analysis.get_class()
    
    print(f"Decompiling MainActivity: {class_analysis.get_name()}")
    
    # Create decompiled class
    dv_class = DvClass(class_obj, dx)
    
    # Get class metadata
    print(f"Superclass: {dv_class.get_superclass_name()}")
    print(f"Interfaces: {dv_class.get_interfaces()}")
    print(f"Access flags: {dv_class.get_access_flags_string()}")
    
    # Decompile all methods
    dv_methods = dv_class.get_methods()
    print(f"Methods to decompile: {len(dv_methods)}")
    
    for dv_method in dv_methods:
        method_name = dv_method.get_name()
        print(f"\n--- Method: {method_name} ---")
        
        try:
            source = dv_method.get_source()
            print(source)
        except Exception as e:
            print(f"Decompilation failed: {e}")

from androguard.decompiler.dad.decompile import DecompilerDAD

# Create DAD decompiler
decompiler = DecompilerDAD(dex_objects[0], dx)

# Find interesting methods
crypto_methods = dx.find_methods(method_name=r".*(encrypt|decrypt|hash).*")

for method_analysis in crypto_methods:
    method_obj = method_analysis.get_method()
    
    print(f"\nAnalyzing AST for: {method_analysis.get_name()}")
    
    try:
        # Get AST representation
        ast = decompiler.get_ast(method_obj)
        
        if ast:
            print("AST structure available")
            # Custom AST analysis would go here
            
        # Get source with decompiler directly
        source = decompiler.get_source_method(method_obj)
        print("Direct decompilation successful")
        print(source[:200] + "..." if len(source) > 200 else source)
        
    except Exception as e:
        print(f"AST analysis failed: {e}")

import os

def safe_decompile_class(class_obj, dx, output_dir):
    """Safely decompile a class with error handling."""
    try:
        dv_class = DvClass(class_obj, dx)
        class_name = dv_class.get_name()
        
        # Clean filename
        safe_name = class_name.replace('L', '').replace(';', '').replace('/', '_')
        filename = os.path.join(output_dir, safe_name + '.java')
        
        # Get source
        source = dv_class.get_source()
        
        # Write to file
        os.makedirs(os.path.dirname(filename), exist_ok=True)
        with open(filename, 'w', encoding='utf-8') as f:
            f.write(f"// Decompiled class: {class_name}\n")
            f.write(f"// Superclass: {dv_class.get_superclass_name()}\n")
            f.write(f"// Interfaces: {', '.join(dv_class.get_interfaces())}\n\n")
            f.write(source)
        
        return filename, None
    except Exception as e:
        return None, str(e)

# Batch decompile all classes
output_directory = "decompiled_sources"
os.makedirs(output_directory, exist_ok=True)

total_classes = 0
successful = 0
failed = 0

for dex in dex_objects:
    classes = dex.get_classes()
    total_classes += len(classes)
    
    for class_obj in classes:
        filename, error = safe_decompile_class(class_obj, dx, output_directory)
        
        if filename:
            successful += 1
            print(f"✓ {os.path.basename(filename)}")
        else:
            failed += 1
            class_name = class_obj.get_name()
            print(f"✗ {class_name}: {error}")

print(f"\nDecompilation complete:")
print(f"Total classes: {total_classes}")
print(f"Successful: {successful}")
print(f"Failed: {failed}")
print(f"Success rate: {successful/total_classes*100:.1f}%")

# Compare different decompilation approaches
def compare_decompilation_methods(method_obj, dx):
    """Compare different ways to decompile a method."""
    
    method_name = f"{method_obj.get_class_name()}.{method_obj.get_name()}"
    print(f"\nComparing decompilation for: {method_name}")
    
    # Method 1: Direct DAD decompiler
    try:
        decompiler = DecompilerDAD(dex_objects[0], dx)
        source1 = decompiler.get_source_method(method_obj)
        print("✓ DAD decompiler successful")
    except Exception as e:
        source1 = None
        print(f"✗ DAD decompiler failed: {e}")
    
    # Method 2: DvMethod wrapper
    try:
        dv_method = DvMethod(method_obj, dx)
        source2 = dv_method.get_source()
        print("✓ DvMethod wrapper successful")
    except Exception as e:
        source2 = None
        print(f"✗ DvMethod wrapper failed: {e}")
    
    # Compare results
    if source1 and source2:
        if source1 == source2:
            print("✓ Both methods produce identical results")
        else:
            print("⚠ Methods produce different results")
            print(f"  DAD length: {len(source1)}")
            print(f"  DvMethod length: {len(source2)}")
    
    return source1 or source2

# Test on various method types
test_methods = []
test_methods.extend(dx.find_methods(method_name="<init>")[:3])  # Constructors
test_methods.extend(dx.find_methods(method_name="onCreate")[:2])  # Lifecycle
test_methods.extend(dx.find_methods(accessflags=r".*static.*")[:2])  # Static methods

for method_analysis in test_methods:
    method_obj = method_analysis.get_method()
    source = compare_decompilation_methods(method_obj, dx)
    
    if source:
        print(f"Sample output ({len(source)} chars):")
        print(source[:150] + "..." if len(source) > 150 else source)

def auto_vm(filename: str):
    """
    Automatically determine file type and create appropriate VM.
    
    Parameters:
    - filename: Path to DEX/APK/ODEX file
    
    Returns:
    Tuple of (DEX_object, Analysis_object)
    """

def pretty_show(vmx, method, colors: bool = True) -> str:
    """
    Pretty print decompiled method with optional colors.
    
    Parameters:
    - vmx: Analysis object
    - method: Method to decompile
    - colors: Enable syntax highlighting
    
    Returns:
    Formatted source code string
    """

def export_source_to_disk(output_dir: str, vmx, java: bool = True, raw: bool = False) -> None:
    """
    Export all decompiled source to disk.
    
    Parameters:
    - output_dir: Output directory path
    - vmx: Analysis object
    - java: Export as .java files
    - raw: Export raw bytecode alongside source
    """