Ysopwnable
163ee09a74
* feat(native): inspect recorded crashes through pwntools and pwndbg * fix(native): bind core note semantics to raw owner bytes * fix(native): validate recorded core ABI and evidence scalars * fix(native): require complete recorded note interpretations * fix(native): bind physical core notes to original headers
35 lines
1.6 KiB
Python
35 lines
1.6 KiB
Python
"""Lower inherited limits before replacing this owned process with GDB."""
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import json
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import os
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from pathlib import Path
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import sys
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runtime_path = Path(__file__).parent.parent / "pwntools" / "decoder_runtime.py"
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runtime = {"__file__": str(runtime_path), "__name__": "rea_decoder_runtime"}
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exec(compile(runtime_path.read_bytes(), str(runtime_path), "exec"), runtime)
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class LaunchFailure(Exception):
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def __init__(self, reason, message):
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super().__init__(message)
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self.reason = reason
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def launch(snapshot, cache):
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request_path = sys.argv[-1]
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request = json.loads(Path(request_path).read_text(encoding="utf-8"))
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bridge = str(Path(__file__).with_name("core_context.py"))
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environment = dict(os.environ, REA_CORE_CONTEXT_REQUEST=request_path)
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# Only fixed package code appears in the GDB Python command. Selected paths stay JSON data.
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command = "python exec(compile(open(" + repr(bridge) + ", 'rb').read(), " + repr(bridge) + ", 'exec'), {'__name__':'__main__','__file__':" + repr(bridge) + "})"
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try:
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os.execve(request["gdb"], [request["gdb"], "-nx", "-nh", "--batch", "--quiet",
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"-iex", "set auto-load off", "-iex", "set debuginfod enabled off",
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"-iex", "set auto-solib-add off", "-ex", command], environment)
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except OSError as error:
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raise LaunchFailure("unavailable", "Selected GDB could not start (" + str(error.errno) + "): " + request["gdb"] + "; " + str(error)) from error
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if __name__ == "__main__":
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runtime["main"](sys.argv[-1], launch, LaunchFailure, "pwndbg-core-launcher")
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