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Comments (7)

bsauce avatar bsauce commented on June 24, 2024 1

$ x /20i $rip 我一般用这个反汇编

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bsauce avatar bsauce commented on June 24, 2024

没有符号表也能调试,只是下断点更麻烦一点

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leveryd avatar leveryd commented on June 24, 2024

似乎看不到指令
image

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leveryd avatar leveryd commented on June 24, 2024

我准备自己编译一个vmlinux,想先问下大佬为什么没有把vmlinux放到仓库中。

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bsauce avatar bsauce commented on June 24, 2024

1个vmlinux至少700M,我网速太慢了。你可以用 extract-vmlinux 生成一个不带符号表的 vmlinux。extract-vmlinux脚本你可以在网上搜到

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bsauce avatar bsauce commented on June 24, 2024

$ extract-vmlinux ./bzImage > ./vmlinux

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leveryd avatar leveryd commented on June 24, 2024

$ extract-vmlinux ./bzImage > ./vmlinux

我试过这样。用 https://github.com/bsauce/kernel-exploit-factory/blob/main/CVE-2020-8835/file/bzImage 和 extract-vmlinux脚本 生成了一个vmlinux。

我用这个生成的vmlinux去调试,仍然看不到指令。

  ➜  file gdb vmlinux
  ...
  (gdb) target remote :1234
  Remote debugging using :1234
  0xffffffff81aeacfe in ?? ()
  (gdb) disassemble
  No function contains program counter for selected frame.

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