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pwndbg/pwndbg/commands/dumpargs.py

63 lines
2.0 KiB
Python

from __future__ import annotations
import argparse
from typing import List
import pwndbg.aglib.arch
import pwndbg.aglib.disasm.disassembly
import pwndbg.arguments
import pwndbg.chain
import pwndbg.commands
import pwndbg.commands.telescope
from pwndbg.commands import CommandCategory
from pwndbg.lib.functions import format_flags_argument
parser = argparse.ArgumentParser(description="Prints determined arguments for call instruction.")
parser.add_argument("-f", "--force", action="store_true", help="Force displaying of all arguments.")
@pwndbg.commands.ArgparsedCommand(parser, aliases=["args"], category=CommandCategory.MISC)
@pwndbg.commands.OnlyWhenRunning
def dumpargs(force: bool = False) -> None:
args = (not force and call_args()) or all_args()
if args:
print("\n".join(args))
else:
print("Couldn't resolve call arguments from registers.")
print(
f"Detected ABI: {pwndbg.aglib.arch.name} ({pwndbg.aglib.arch.ptrsize * 8} bit) either doesn't pass arguments through registers or is not implemented. Maybe they are passed on the stack?"
)
def call_args() -> List[str]:
"""
Returns list of resolved call argument strings for display.
Attempts to resolve the target and determine the number of arguments.
Should be used only when being on a call instruction.
"""
results: List[str] = []
for arg, value in pwndbg.arguments.get(pwndbg.aglib.disasm.disassembly.one()):
code = arg.type != "char"
pretty = (
pwndbg.chain.format(value, code=code)
if not arg.flags
else format_flags_argument(arg.flags, value)
)
results.append(" %-10s %s" % (arg.name + ":", pretty))
return results
def all_args() -> List[str]:
"""
Returns list of all argument strings for display.
"""
results: List[str] = []
for name, value in pwndbg.arguments.arguments():
results.append("%4s = %s" % (name, pwndbg.chain.format(value)))
return results