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85 lines
3.0 KiB
Python
85 lines
3.0 KiB
Python
from __future__ import annotations
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import gdb
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from pwnlib.util.cyclic import cyclic
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import pwndbg
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import pwndbg.gdblib.memory
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import pwndbg.gdblib.regs
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import pwndbg.gdblib.vmmap
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import tests
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BINARY = tests.binaries.get("reference-binary.out")
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def run_tests(stack, use_big_endian, expected):
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pwndbg.config.hexdump_group_use_big_endian = use_big_endian
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# Put some data onto the stack
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pwndbg.gdblib.memory.write(stack, cyclic(0x100))
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# Test empty hexdump
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result = gdb.execute("hexdump 0", to_string=True)
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assert result == "+0000 0x000000 \n"
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results = []
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# TODO: Repetition is not working in tests
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results.append(gdb.execute(f"hexdump {stack} 64", to_string=True))
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results.append(gdb.execute(f"hexdump {stack} 3", to_string=True))
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assert len(results) == len(expected)
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for i, result in enumerate(results):
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expected_result = expected[i]
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assert result == expected_result
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def test_hexdump(start_binary):
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start_binary(BINARY)
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pwndbg.config.hexdump_group_width = -1
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# TODO: Setting theme options with Python isn't working
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gdb.execute("set hexdump-byte-separator")
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stack_addr = pwndbg.gdblib.regs.rsp - 0x100
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expected = [
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f"""+0000 0x{stack_addr:x} 6161616261616161 6161616461616163 │aaaabaaa│caaadaaa│
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+0010 0x{stack_addr+0x10:x} 6161616661616165 6161616861616167 │eaaafaaa│gaaahaaa│
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+0020 0x{stack_addr+0x20:x} 6161616a61616169 6161616c6161616b │iaaajaaa│kaaalaaa│
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+0030 0x{stack_addr+0x30:x} 6161616e6161616d 616161706161616f │maaanaaa│oaaapaaa│\n""",
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f"""+0000 0x{stack_addr:x} 616161 │aaa │ │\n""",
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]
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run_tests(stack_addr, True, expected)
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expected = [
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f"""+0000 0x{stack_addr:x} 6161616162616161 6361616164616161 │aaaabaaa│caaadaaa│
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+0010 0x{stack_addr+0x10:x} 6561616166616161 6761616168616161 │eaaafaaa│gaaahaaa│
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+0020 0x{stack_addr+0x20:x} 696161616a616161 6b6161616c616161 │iaaajaaa│kaaalaaa│
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+0030 0x{stack_addr+0x30:x} 6d6161616e616161 6f61616170616161 │maaanaaa│oaaapaaa│\n""",
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f"""+0000 0x{stack_addr:x} 616161 │aaa │ │\n""",
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]
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run_tests(stack_addr, False, expected)
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def test_hexdump_collapse_lines(start_binary):
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start_binary(BINARY)
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sp = pwndbg.gdblib.regs.rsp
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pwndbg.gdblib.memory.write(sp, b"abcdefgh\x01\x02\x03\x04\x05\x06\x07\x08" * 16)
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def hexdump_lines(lines):
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offset = (lines - 1) * 0x10 # last line offset
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skipped_lines = lines - 2
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out = gdb.execute(f"hexdump $rsp {offset+16}", to_string=True)
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expected = (
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f"+0000 0x{sp:x} 61 62 63 64 65 66 67 68 01 02 03 04 05 06 07 08 │abcdefgh│........│\n"
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f"... ↓ skipped {skipped_lines} identical lines ({skipped_lines*16} bytes)\n"
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f"+{offset:04x} 0x{sp+offset:x} 61 62 63 64 65 66 67 68 01 02 03 04 05 06 07 08 │abcdefgh│........│\n"
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)
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assert out == expected
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hexdump_lines(3)
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hexdump_lines(4)
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hexdump_lines(10)
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