def context_expressions(target=sys.stdout, with_banner=True, width=None):
if not expressions:
return []
banner = [pwndbg.ui.banner("expressions", target=target, width=width)]
output = []
if width is None:
_height, width = pwndbg.ui.get_window_size(target=target)
for exp, cmd in sorted(expressions):
try:
# value = gdb.parse_and_eval(exp)
value = str(cmd(exp))
except gdb.error as err:
value = str(err)
value = value.split("\n")
lines = []
for line in value:
if width and len(line) + len(exp) + 3 > width:
n = width - (len(exp) + 3) - 1 # 1 Padding...
lines.extend(line[i:i + n] for i in range(0, len(line), n))
else:
lines.append(line)
fmt = C.highlight(exp)
lines[0] = "{} = {}".format(fmt, lines[0])
lines[1:] = [" " * (len(exp) + 3) + line for line in lines[1:]]
output.extend(lines)
return banner + output if with_banner else output
def instruction(ins):
asm = '%-06s %s' % (ins.mnemonic, ins.op_str)
if pwndbg.config.syntax_highlight:
asm = syntax_highlight(asm)
is_branch = set(ins.groups) & capstone_branch_groups
# Highlight the current line if enabled
if pwndbg.config.highlight_pc and ins.address == pwndbg.regs.pc:
asm = C.highlight(asm)
# tl;dr is a branch?
if ins.target not in (None, ins.address + ins.size):
sym = pwndbg.symbol.get(ins.target) or None
target = M.get(ins.target)
const = ins.target_const
hextarget = hex(ins.target)
hexlen = len(hextarget)
# If it's a constant expression, color it directly in the asm.
if const:
asm = '%s <%s>' % (ljust_colored(asm, 36), target)
asm = asm.replace(hex(ins.target), sym or target)
# It's not a constant expression, but we've calculated the target
# address by emulation or other means (for example showing ret instruction target)
elif sym:
asm = '%s <%s; %s>' % (ljust_colored(asm, 36), target, sym)
# We were able to calculate the target, but there is no symbol
# name for it.
else:
asm += '<%s>' % (target)
# not a branch
elif ins.symbol:
if is_branch and not ins.target:
asm = '%s <%s>' % (asm, ins.symbol)
# XXX: not sure when this ever happens
asm += '<-- file a pwndbg bug for this'
else:
inlined_sym = asm.replace(hex(ins.symbol_addr), ins.symbol)
# display symbol as mem text if no inline replacement was made
mem_text = ins.symbol if inlined_sym == asm else None
asm = '%s <%s>' % (ljust_colored(inlined_sym, 36), M.get(ins.symbol_addr, mem_text))
# Style the instruction mnemonic if it's a branch instruction.
if is_branch:
asm = asm.replace(ins.mnemonic, branch(ins.mnemonic), 1)
# If we know the conditional is taken, mark it as taken.
if ins.condition is None:
asm = ' ' + asm
elif ins.condition:
asm = on('✔ ') + asm
else:
asm = ' ' + asm
return asm
def instruction(ins):
asm = '%-06s %s' % (ins.mnemonic, ins.op_str)
# TODO: detect 'arm', 'x86,64' is only for Intel x86/64
_highlighted, asm = pwndbg.color.syntax_highlight(asm, language='ARM')
is_branch = set(ins.groups) & capstone_branch_groups
# Highlight the current line if enabled
if pwndbg.config.highlight_pc and ins.address == pwndbg.regs.pc:
asm = C.highlight(asm)
# tl;dr is a branch?
if ins.target not in (None, ins.address + ins.size):
sym = pwndbg.symbol.get(ins.target) or None
target = M.get(ins.target)
const = ins.target_const
hextarget = hex(ins.target)
hexlen = len(hextarget)
# If it's a constant expression, color it directly in the asm.
if const:
asm = asm.replace(hex(ins.target), sym or target)
if sym:
asm = '%s <%s>' % (ljust_colored(asm, 36), target)
# It's not a constant expression, but we've calculated the target
# address by emulation.
elif sym:
asm = '%s <%s; %s>' % (ljust_colored(asm, 36), target, sym)
# We were able to calculate the target, but there is no symbol
# name for it.
else:
asm += '<%s>' % (target)
# not a branch
elif ins.symbol:
if is_branch and not ins.target:
asm = '%s <%s>' % (asm, ins.symbol)
# XXX: not sure when this ever happens
asm += '<-- file a pwndbg bug for this'
else:
asm = asm.replace(hex(ins.symbol_addr), ins.symbol)
asm = '%s <%s>' % (ljust_colored(asm, 36), M.get(ins.symbol_addr))
# Style the instruction mnemonic if it's a branch instruction.
if is_branch:
asm = asm.replace(ins.mnemonic, branch(ins.mnemonic), 1)
# If we know the conditional is taken, mark it as green.
if ins.condition is None:
asm = ' ' + asm
elif ins.condition:
asm = green('✔ ') + asm
else:
asm = ' ' + asm
return asm
def get_filename_and_formatted_source():
"""
Returns formatted, lines limited and highlighted source as list
or if it isn't there - an empty list
"""
sal = gdb.selected_frame().find_sal() # gdb.Symtab_and_line
# Check if source code is available
if sal.symtab is None:
return "", []
# Get the full source code
closest_line = sal.line
filename = sal.symtab.fullname()
try:
source = get_highlight_source(filename)
except IOError:
return "", []
if not source:
return "", []
n = int(source_code_lines)
# Compute the line range
start = max(closest_line - 1 - n // 2, 0)
end = min(closest_line - 1 + n // 2 + 1, len(source))
num_width = len(str(end))
# split the code
source = source[start:end]
# Compute the prefix_sign length
prefix_sign = pwndbg.config.code_prefix
prefix_width = len(prefix_sign)
# Format the output
formatted_source = []
for line_number, code in enumerate(source, start=start + 1):
fmt = " {prefix_sign:{prefix_width}} {line_number:>{num_width}} {code}"
if pwndbg.config.highlight_source and line_number == closest_line:
fmt = C.highlight(fmt)
line = fmt.format(
prefix_sign=C.prefix(prefix_sign)
if line_number == closest_line else "",
prefix_width=prefix_width,
line_number=line_number,
num_width=num_width,
code=code,
)
formatted_source.append(line)
return filename, formatted_source
def context_code():
try:
symtab = gdb.selected_frame().find_sal().symtab
linetable = symtab.linetable()
closest_pc = -1
closest_line = -1
for line in linetable:
if line.pc <= pwndbg.regs.pc and line.pc > closest_pc:
closest_line = line.line
closest_pc = line.pc
if closest_line < 0:
return []
source = gdb.execute('list %i' % closest_line,
from_tty=False,
to_string=True)
# If it starts on line 1, it's not really using the
# correct source code.
if not source or closest_line <= 1:
return []
# highlight the current code line
source_lines = source.splitlines()
if pwndbg.config.highlight_source:
for i in range(len(source_lines)):
if source_lines[i].startswith('%s\t' % closest_line):
source_lines[i] = C.highlight(source_lines[i])
break
banner = [pwndbg.ui.banner("source")]
banner.extend(source_lines)
return banner
except:
pass
if not pwndbg.ida.available():
return []
try:
name = pwndbg.ida.GetFunctionName(pwndbg.regs.pc)
addr = pwndbg.ida.LocByName(name)
lines = pwndbg.ida.decompile(addr)
return lines.splitlines()
except:
pass
return []
def context_source():
try:
symtab = gdb.selected_frame().find_sal().symtab
linetable = symtab.linetable()
closest_pc = -1
closest_line = -1
for line in linetable:
if line.pc <= pwndbg.regs.pc and line.pc > closest_pc:
closest_line = line.line
closest_pc = line.pc
if closest_line < 0:
return []
source = gdb.execute('list %i' % closest_line, from_tty=False, to_string=True)
# If it starts on line 1, it's not really using the
# correct source code.
if not source or closest_line <= 1:
return []
# highlight the current code line
source_lines = source.splitlines()
if pwndbg.config.highlight_source:
for i in range(len(source_lines)):
if source_lines[i].startswith('%s\t' % closest_line):
source_lines[i] = C.highlight(source_lines[i])
break
banner = [pwndbg.ui.banner("code")]
banner.extend(source_lines)
return banner
except:
pass
if not pwndbg.ida.available():
return []
try:
name = pwndbg.ida.GetFunctionName(pwndbg.regs.pc)
addr = pwndbg.ida.LocByName(name)
lines = pwndbg.ida.decompile(addr)
return lines.splitlines()
except:
pass
return []
def nearpc(pc=None, lines=None, to_string=False, emulate=False):
"""
Disassemble near a specified address.
"""
# Repeating nearpc (pressing enter) makes it show next addresses
# (writing nearpc explicitly again will reset its state)
if nearpc.repeat:
pc = nearpc.next_pc
result = []
# Fix the case where we only have one argument, and
# it's a small value.
if lines is None and (pc is None or int(pc) < 0x100):
lines = pc
pc = None
if pc is None:
pc = pwndbg.regs.pc
if lines is None:
lines = nearpc_lines // 2
pc = int(pc)
lines = int(lines)
# Check whether we can even read this address
if not pwndbg.memory.peek(pc):
result.append(message.error('Invalid address %#x' % pc))
# # Load source data if it's available
# pc_to_linenos = collections.defaultdict(lambda: [])
# lineno_to_src = {}
# frame = gdb.selected_frame()
# if frame:
# sal = frame.find_sal()
# if sal:
# symtab = sal.symtab
# objfile = symtab.objfile
# sourcefilename = symtab.filename
# with open(sourcefilename, 'r') as sourcefile:
# lineno_to_src = {i:l for i,l in enumerate(sourcefile.readlines())}
# for line in symtab.linetable():
# pc_to_linenos[line.pc].append(line.line)
instructions = pwndbg.disasm.near(pc,
lines,
emulate=emulate,
show_prev_insns=not nearpc.repeat)
if pwndbg.memory.peek(pc) and not instructions:
result.append(message.error('Invalid instructions at %#x' % pc))
# In case $pc is in a new map we don't know about,
# this will trigger an exploratory search.
pwndbg.vmmap.find(pc)
# Gather all addresses and symbols for each instruction
symbols = [pwndbg.symbol.get(i.address) for i in instructions]
addresses = ['%#x' % i.address for i in instructions]
nearpc.next_pc = instructions[-1].address + instructions[
-1].size if instructions else 0
# Format the symbol name for each instruction
symbols = ['<%s> ' % sym if sym else '' for sym in symbols]
# Pad out all of the symbols and addresses
if pwndbg.config.left_pad_disasm and not nearpc.repeat:
symbols = ljust_padding(symbols)
addresses = ljust_padding(addresses)
prev = None
first_pc = True
# Print out each instruction
for address_str, symbol, instr in zip(addresses, symbols, instructions):
asm = D.instruction(instr)
prefix_sign = pwndbg.config.nearpc_prefix
# Show prefix only on the specified address and don't show it while in repeat-mode
# or when showing current instruction for the second time
show_prefix = instr.address == pc and not nearpc.repeat and first_pc
prefix = ' %s' % (prefix_sign if show_prefix else ' ' *
len(prefix_sign))
prefix = N.prefix(prefix)
pre = pwndbg.ida.Anterior(instr.address)
if pre:
result.append(N.ida_anterior(pre))
# Colorize address and symbol if not highlighted
# symbol is fetched from gdb and it can be e.g. '<main+8>'
if instr.address != pc or not pwndbg.config.highlight_pc or nearpc.repeat:
address_str = N.address(address_str)
symbol = N.symbol(symbol)
elif pwndbg.config.highlight_pc and first_pc:
prefix = C.highlight(prefix)
address_str = C.highlight(address_str)
symbol = C.highlight(symbol)
first_pc = False
line = ' '.join((prefix, address_str, symbol, asm))
# If there was a branch before this instruction which was not
# contiguous, put in some ellipses.
if prev and prev.address + prev.size != instr.address:
result.append(N.branch_marker('%s' % nearpc_branch_marker))
# Otherwise if it's a branch and it *is* contiguous, just put
# and empty line.
elif prev and any(g in prev.groups
for g in (CS_GRP_CALL, CS_GRP_JUMP, CS_GRP_RET)):
if len('%s' % nearpc_branch_marker_contiguous) > 0:
result.append('%s' % nearpc_branch_marker_contiguous)
# For syscall instructions, put the name on the side
if instr.address == pc:
syscall_name = pwndbg.arguments.get_syscall_name(instr)
if syscall_name:
line += ' <%s>' % N.syscall_name(syscall_name)
# For Comment Function
try:
line += " " * 10 + C.comment(
pwndbg.commands.comments.file_lists[pwndbg.proc.exe][hex(
instr.address)])
except:
pass
result.append(line)
# For call instructions, attempt to resolve the target and
# determine the number of arguments.
if show_args:
result.extend([
'%8s%s' % ('', arg)
for arg in pwndbg.arguments.format_args(instruction=instr)
])
prev = instr
if not to_string:
print('\n'.join(result))
return result
def nearpc(pc=None, lines=None, to_string=False, emulate=False):
"""
Disassemble near a specified address.
"""
# Fix the case where we only have one argument, and
# it's a small value.
if lines is None and (pc is None or int(pc) < 0x100):
lines = pc
pc = None
if pc is None:
pc = pwndbg.regs.pc
if lines is None:
lines = 5
pc = int(pc)
lines = int(lines)
# # Load source data if it's available
# pc_to_linenos = collections.defaultdict(lambda: [])
# lineno_to_src = {}
# frame = gdb.selected_frame()
# if frame:
# sal = frame.find_sal()
# if sal:
# symtab = sal.symtab
# objfile = symtab.objfile
# sourcefilename = symtab.filename
# with open(sourcefilename, 'r') as sourcefile:
# lineno_to_src = {i:l for i,l in enumerate(sourcefile.readlines())}
# for line in symtab.linetable():
# pc_to_linenos[line.pc].append(line.line)
result = []
instructions = pwndbg.disasm.near(pc, lines, emulate=emulate)
# In case $pc is in a new map we don't know about,
# this will trigger an exploratory search.
pwndbg.vmmap.find(pc)
# Gather all addresses and symbols for each instruction
symbols = [pwndbg.symbol.get(i.address) for i in instructions]
addresses = ['%#x' % i.address for i in instructions]
# Format the symbol name for each instruction
symbols = ['<%s> ' % sym if sym else '' for sym in symbols]
# Pad out all of the symbols and addresses
if pwndbg.config.left_pad_disasm:
symbols = ljust_padding(symbols)
addresses = ljust_padding(addresses)
prev = None
# Print out each instruction
for address_str, s, i in zip(addresses, symbols, instructions):
asm = D.instruction(i)
prefix = ' %s' % (pwndbg.config.nearpc_prefix if i.address == pc else
' ' * len(pwndbg.config.nearpc_prefix.value))
prefix = N.prefix(prefix)
if pwndbg.config.highlight_pc:
prefix = C.highlight(prefix)
pre = pwndbg.ida.Anterior(i.address)
if pre:
result.append(N.ida_anterior(pre))
# Colorize address and symbol if not highlighted
if i.address != pc or not pwndbg.config.highlight_pc:
address_str = N.address(address_str)
s = N.symbol(s)
elif pwndbg.config.highlight_pc:
address_str = C.highlight(address_str)
s = C.highlight(s)
line = ' '.join((prefix, address_str, s, asm))
# If there was a branch before this instruction which was not
# contiguous, put in some ellipses.
if prev and prev.address + prev.size != i.address:
result.append(N.branch_marker('%s' % nearpc_branch_marker))
# Otherwise if it's a branch and it *is* contiguous, just put
# and empty line.
elif prev and any(g in prev.groups
for g in (CS_GRP_CALL, CS_GRP_JUMP, CS_GRP_RET)):
if len('%s' % nearpc_branch_marker_contiguous) > 0:
result.append('%s' % nearpc_branch_marker_contiguous)
# For syscall instructions, put the name on the side
if i.address == pc:
syscall_name = pwndbg.arguments.get_syscall_name(i)
if syscall_name:
line += ' <%s>' % N.syscall_name(syscall_name)
result.append(line)
# For call instructions, attempt to resolve the target and
# determine the number of arguments.
for arg, value in pwndbg.arguments.get(i):
code = False if arg.type == 'char' else True
pretty = pwndbg.chain.format(value, code=code)
result.append('%8s%-10s %s' %
('', N.argument(arg.name) + ':', pretty))
prev = i
if not to_string:
print('\n'.join(result))
return result
def nearpc(pc=None, lines=None, to_string=False, emulate=False):
"""
Disassemble near a specified address.
"""
# Fix the case where we only have one argument, and
# it's a small value.
if lines is None and (pc is None or int(pc) < 0x100):
lines = pc
pc = None
if pc is None:
pc = pwndbg.regs.pc
if lines is None:
lines = 5
pc = int(pc)
lines = int(lines)
# # Load source data if it's available
# pc_to_linenos = collections.defaultdict(lambda: [])
# lineno_to_src = {}
# frame = gdb.selected_frame()
# if frame:
# sal = frame.find_sal()
# if sal:
# symtab = sal.symtab
# objfile = symtab.objfile
# sourcefilename = symtab.filename
# with open(sourcefilename, 'r') as sourcefile:
# lineno_to_src = {i:l for i,l in enumerate(sourcefile.readlines())}
# for line in symtab.linetable():
# pc_to_linenos[line.pc].append(line.line)
result = []
instructions = pwndbg.disasm.near(pc, lines, emulate=emulate)
# In case $pc is in a new map we don't know about,
# this will trigger an exploratory search.
pwndbg.vmmap.find(pc)
# Gather all addresses and symbols for each instruction
symbols = [pwndbg.symbol.get(i.address) for i in instructions]
addresses = ['%#x' % i.address for i in instructions]
# Format the symbol name for each instruction
symbols = ['<%s> ' % sym if sym else '' for sym in symbols]
# Pad out all of the symbols and addresses
if pwndbg.config.left_pad_disasm:
symbols = ljust_padding(symbols)
addresses = ljust_padding(addresses)
prev = None
# Print out each instruction
for address_str, s, i in zip(addresses, symbols, instructions):
asm = D.instruction(i)
prefix = ' %s' % (pwndbg.config.nearpc_prefix if i.address == pc else ' ' * len(pwndbg.config.nearpc_prefix.value))
prefix = N.prefix(prefix)
if pwndbg.config.highlight_pc:
prefix = C.highlight(prefix)
pre = pwndbg.ida.Anterior(i.address)
if pre:
result.append(N.ida_anterior(pre))
# Colorize address and symbol if not highlighted
if i.address != pc or not pwndbg.config.highlight_pc:
address_str = N.address(address_str)
s = N.symbol(s)
elif pwndbg.config.highlight_pc:
address_str = C.highlight(address_str)
s = C.highlight(s)
line = ' '.join((prefix, address_str, s, asm))
# If there was a branch before this instruction which was not
# contiguous, put in some ellipses.
if prev and prev.address + prev.size != i.address:
result.append(N.branch_marker('%s' % nearpc_branch_marker))
# Otherwise if it's a branch and it *is* contiguous, just put
# and empty line.
elif prev and any(g in prev.groups for g in (CS_GRP_CALL, CS_GRP_JUMP, CS_GRP_RET)):
if len('%s' % nearpc_branch_marker_contiguous) > 0:
result.append('%s' % nearpc_branch_marker_contiguous)
# For syscall instructions, put the name on the side
if i.address == pc:
syscall_name = pwndbg.arguments.get_syscall_name(i)
if syscall_name:
line += ' <%s>' % N.syscall_name(syscall_name)
result.append(line)
# For call instructions, attempt to resolve the target and
# determine the number of arguments.
for arg, value in pwndbg.arguments.get(i):
code = False if arg.type == 'char' else True
pretty = pwndbg.chain.format(value, code=code)
result.append('%8s%-10s %s' % ('', N.argument(arg.name) + ':', pretty))
prev = i
if not to_string:
print('\n'.join(result))
return result
def context_code():
try:
# Compute the closest pc and line number
symtab = gdb.selected_frame().find_sal().symtab
linetable = symtab.linetable()
closest_pc = -1
closest_line = -1
for line in linetable:
if closest_pc < line.pc <= pwndbg.regs.pc:
closest_line = line.line
closest_pc = line.pc
if closest_line < 0:
return []
# Get the full source code
filename = symtab.fullname()
source = get_highlight_source(filename)
# If it starts on line 1, it's not really using the
# correct source code.
if not source or closest_line <= 1:
return []
n = int(source_code_lines)
# Compute the line range
start = max(closest_line - 1 - n // 2, 0)
end = min(closest_line - 1 + n // 2 + 1, len(source))
num_width = len(str(end))
# split the code
source = source[start:end]
# Compute the prefix_sign length
prefix_sign = pwndbg.config.code_prefix
prefix_width = len(prefix_sign)
# Format the output
formatted_source = []
for line_number, code in enumerate(source, start=start + 1):
fmt = ' {prefix_sign:{prefix_width}} {line_number:>{num_width}} {code}'
if pwndbg.config.highlight_source and line_number == closest_line:
fmt = C.highlight(fmt)
line = fmt.format(prefix_sign=C.prefix(prefix_sign)
if line_number == closest_line else '',
prefix_width=prefix_width,
line_number=line_number,
num_width=num_width,
code=code)
formatted_source.append(line)
banner = [pwndbg.ui.banner("Source (code)")]
banner.extend(formatted_source)
return banner
except:
pass
if not pwndbg.ida.available():
return []
name = pwndbg.ida.GetFunctionName(pwndbg.regs.pc)
addr = pwndbg.ida.LocByName(name)
# May be None when decompilation failed or user loaded wrong binary in IDA
code = pwndbg.ida.decompile(addr)
if code:
return [pwndbg.ui.banner("Hexrays pseudocode")] + code.splitlines()
else:
return []
def instruction(ins):
asm = '%-06s %s' % (ins.mnemonic, ins.op_str)
if pwndbg.config.syntax_highlight:
asm = syntax_highlight(asm)
is_branch = set(ins.groups) & capstone_branch_groups
# Highlight the current line if enabled
if pwndbg.config.highlight_pc and ins.address == pwndbg.regs.pc:
asm = C.highlight(asm)
# tl;dr is a branch?
if ins.target not in (None, ins.address + ins.size):
sym = pwndbg.symbol.get(ins.target) or None
target = M.get(ins.target)
const = ins.target_const
# Use format string instead of hex() to avoid suffix 'l' or 'L'
hextarget = '0x%x' % ins.target
hexlen = len(hextarget)
# If it's a constant expression, color it directly in the asm.
if const:
# TODO: Also colorize the address starts with '$' and '#'
asm = asm.replace(hextarget, sym or target)
if sym:
asm = '%s <%s>' % (ljust_colored(asm, 36), target)
# It's not a constant expression, but we've calculated the target
# address by emulation.
elif sym:
asm = '%s <%s; %s>' % (ljust_colored(asm, 36), target, sym)
# We were able to calculate the target, but there is no symbol
# name for it.
else:
asm += '<%s>' % (target)
# not a branch
elif ins.symbol:
if is_branch and not ins.target:
asm = '%s <%s>' % (asm, ins.symbol)
# XXX: not sure when this ever happens
asm += '<-- file a pwndbg bug for this'
else:
asm = asm.replace(hex(ins.symbol_addr), ins.symbol)
asm = '%s <%s>' % (ljust_colored(asm, 36), M.get(ins.symbol_addr))
# Style the instruction mnemonic if it's a branch instruction.
if is_branch:
asm = asm.replace(ins.mnemonic, branch(ins.mnemonic), 1)
# If we know the conditional is taken, mark it as taken.
if ins.condition is None:
asm = ' ' + asm
elif ins.condition:
asm = on('✔ ') + asm
else:
asm = ' ' + asm
return asm
def nearpc(pc=None, lines=None, to_string=False, emulate=False):
"""
Disassemble near a specified address.
"""
# Repeating nearpc (pressing enter) makes it show next addresses
# (writing nearpc explicitly again will reset its state)
if nearpc.repeat:
pc = nearpc.next_pc
result = []
# Fix the case where we only have one argument, and
# it's a small value.
if lines is None and (pc is None or int(pc) < 0x100):
lines = pc
pc = None
if pc is None:
pc = pwndbg.regs.pc
if lines is None:
lines = nearpc_lines // 2
pc = int(pc)
lines = int(lines)
# Check whether we can even read this address
if not pwndbg.memory.peek(pc):
result.append(message.error('Invalid address %#x' % pc))
# # Load source data if it's available
# pc_to_linenos = collections.defaultdict(lambda: [])
# lineno_to_src = {}
# frame = gdb.selected_frame()
# if frame:
# sal = frame.find_sal()
# if sal:
# symtab = sal.symtab
# objfile = symtab.objfile
# sourcefilename = symtab.filename
# with open(sourcefilename, 'r') as sourcefile:
# lineno_to_src = {i:l for i,l in enumerate(sourcefile.readlines())}
# for line in symtab.linetable():
# pc_to_linenos[line.pc].append(line.line)
instructions = pwndbg.disasm.near(pc, lines, emulate=emulate, show_prev_insns=not nearpc.repeat)
if pwndbg.memory.peek(pc) and not instructions:
result.append(message.error('Invalid instructions at %#x' % pc))
# In case $pc is in a new map we don't know about,
# this will trigger an exploratory search.
pwndbg.vmmap.find(pc)
# Gather all addresses and symbols for each instruction
symbols = [pwndbg.symbol.get(i.address) for i in instructions]
addresses = ['%#x' % i.address for i in instructions]
nearpc.next_pc = instructions[-1].address + instructions[-1].size if instructions else 0
# Format the symbol name for each instruction
symbols = ['<%s> ' % sym if sym else '' for sym in symbols]
# Pad out all of the symbols and addresses
if pwndbg.config.left_pad_disasm and not nearpc.repeat:
symbols = ljust_padding(symbols)
addresses = ljust_padding(addresses)
prev = None
# Print out each instruction
for address_str, symbol, instr in zip(addresses, symbols, instructions):
asm = D.instruction(instr)
prefix_sign = pwndbg.config.nearpc_prefix
# Show prefix only on the specified address and don't show it while in repeat-mode
show_prefix = instr.address == pc and not nearpc.repeat
prefix = ' %s' % (prefix_sign if show_prefix else ' ' * len(prefix_sign))
prefix = N.prefix(prefix)
pre = pwndbg.ida.Anterior(instr.address)
if pre:
result.append(N.ida_anterior(pre))
# Colorize address and symbol if not highlighted
# symbol is fetched from gdb and it can be e.g. '<main+8>'
if instr.address != pc or not pwndbg.config.highlight_pc or nearpc.repeat:
address_str = N.address(address_str)
symbol = N.symbol(symbol)
elif pwndbg.config.highlight_pc:
prefix = C.highlight(prefix)
address_str = C.highlight(address_str)
symbol = C.highlight(symbol)
line = ' '.join((prefix, address_str, symbol, asm))
# If there was a branch before this instruction which was not
# contiguous, put in some ellipses.
if prev and prev.address + prev.size != instr.address:
result.append(N.branch_marker('%s' % nearpc_branch_marker))
# Otherwise if it's a branch and it *is* contiguous, just put
# and empty line.
elif prev and any(g in prev.groups for g in (CS_GRP_CALL, CS_GRP_JUMP, CS_GRP_RET)):
if len('%s' % nearpc_branch_marker_contiguous) > 0:
result.append('%s' % nearpc_branch_marker_contiguous)
# For syscall instructions, put the name on the side
if instr.address == pc:
syscall_name = pwndbg.arguments.get_syscall_name(instr)
if syscall_name:
line += ' <%s>' % N.syscall_name(syscall_name)
result.append(line)
# For call instructions, attempt to resolve the target and
# determine the number of arguments.
if show_args:
result.extend(['%8s%s' % ('', arg) for arg in pwndbg.arguments.format_args(instruction=instr)])
prev = instr
if not to_string:
print('\n'.join(result))
return result
def context_code():
try:
# Compute the closest pc and line number
symtab = gdb.selected_frame().find_sal().symtab
linetable = symtab.linetable()
closest_pc = -1
closest_line = -1
for line in linetable:
if closest_pc < line.pc <= pwndbg.regs.pc:
closest_line = line.line
closest_pc = line.pc
if closest_line < 0:
return []
# Get the full source code
filename = symtab.fullname()
source = get_highlight_source(filename)
# If it starts on line 1, it's not really using the
# correct source code.
if not source or closest_line <= 1:
return []
n = int(source_code_lines)
# Compute the line range
start = max(closest_line - 1 - n//2, 0)
end = min(closest_line - 1 + n//2 + 1, len(source))
num_width = len(str(end))
# split the code
source = source[start:end]
# Compute the prefix_sign length
prefix_sign = pwndbg.config.code_prefix
prefix_width = len(prefix_sign)
# Format the output
formatted_source = []
for line_number, code in enumerate(source, start=start + 1):
fmt = ' {prefix_sign:{prefix_width}} {line_number:>{num_width}} {code}'
if pwndbg.config.highlight_source and line_number == closest_line:
fmt = C.highlight(fmt)
line = fmt.format(
prefix_sign=C.prefix(prefix_sign) if line_number == closest_line else '',
prefix_width=prefix_width,
line_number=line_number,
num_width=num_width,
code=code
)
formatted_source.append(line)
banner = [pwndbg.ui.banner("Source (code)"), 'In file: %s' % filename]
banner.extend(formatted_source)
return banner
except:
pass
if not pwndbg.ida.available():
return []
name = pwndbg.ida.GetFunctionName(pwndbg.regs.pc)
addr = pwndbg.ida.LocByName(name)
# May be None when decompilation failed or user loaded wrong binary in IDA
code = pwndbg.ida.decompile(addr)
if code:
return [pwndbg.ui.banner("Hexrays pseudocode")] + code.splitlines()
else:
return []
def context_code():
try:
# Compute the closest pc and line number
symtab = gdb.selected_frame().find_sal().symtab
linetable = symtab.linetable()
closest_pc = -1
closest_line = -1
for line in linetable:
if closest_pc < line.pc <= pwndbg.regs.pc:
closest_line = line.line
closest_pc = line.pc
if closest_line < 0:
return []
# Get the full source code
filename = symtab.fullname()
source = get_highlight_source(filename)
# If it starts on line 1, it's not really using the
# correct source code.
if not source or closest_line <= 1:
return []
n = int(source_code_lines)
# Compute the line range
start = max(closest_line - 1 - n//2, 0)
end = min(closest_line - 1 + n//2 + 1, len(source))
num_width = len(str(end))
# split the code
source = source[start:end]
# Compute the prefix_sign length
# TODO: remove this if the config setter can make sure everything is unicode.
# This is needed because the config value may be utf8 byte string.
# It is better to convert to unicode at setter of config and then we will not need this.
prefix_sign = pwndbg.config.code_prefix
value = prefix_sign.value
if isinstance(value, bytes):
value = codecs.decode(value, 'utf-8')
prefix_width = len(value)
# Convert config class to str to make format() work
prefix_sign = str(prefix_sign)
# Format the output
formatted_source = []
for line_number, code in enumerate(source, start=start + 1):
fmt = ' {prefix_sign:{prefix_width}} {line_number:>{num_width}} {code}'
if pwndbg.config.highlight_source and line_number == closest_line:
fmt = C.highlight(fmt)
line = fmt.format(
prefix_sign=C.prefix(prefix_sign) if line_number == closest_line else '',
prefix_width=prefix_width,
line_number=line_number,
num_width=num_width,
code=code
)
formatted_source.append(line)
banner = [pwndbg.ui.banner("Source (code)")]
banner.extend(formatted_source)
return banner
except:
pass
if not pwndbg.ida.available():
return []
name = pwndbg.ida.GetFunctionName(pwndbg.regs.pc)
addr = pwndbg.ida.LocByName(name)
# May be None when decompilation failed or user loaded wrong binary in IDA
code = pwndbg.ida.decompile(addr)
if code:
return [pwndbg.ui.banner("Hexrays pseudocode")] + code.splitlines()
else:
return []