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mhook can't hook _loop ;)

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aaaaaa aaaaaaa
2018-01-03 23:03:48 +01:00
parent 117de6e081
commit bce85be82e
2 changed files with 33 additions and 2 deletions
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31
mhook.txt Normal file
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_loop original:
00007FFF7CAE978C | 48 89 C8 | mov rax,rcx |
00007FFF7CAE978F | 48 F7 E1 | mul rcx |
00007FFF7CAE9792 | 90 | nop |
00007FFF7CAE9793 | 90 | nop |
00007FFF7CAE9794 | 90 | nop |
00007FFF7CAE9795 | E2 F8 | loop test_cases.7FFF7CAE978F |
00007FFF7CAE9797 | C3 | ret |
_loop hooked:
00007FFF7CAE978C | E9 0F 69 23 00 | jmp <MHook_Hooks::hookLoop> |
00007FFF7CAE9791 | E1 90 | loope test_cases.7FFF7CAE9723 |
00007FFF7CAE9793 | 90 | nop |
00007FFF7CAE9794 | 90 | nop |
00007FFF7CAE9795 | E2 F8 | loop test_cases.7FFF7CAE978F |
00007FFF7CAE9797 | C3 | ret |
trampoline:
00007FFF7CD200C0 | 48 89 C8 | mov rax,rcx |
00007FFF7CD200C3 | 48 F7 E1 | mul rcx |
00007FFF7CD200C6 | E9 C7 96 DC FF | jmp test_cases.7FFF7CAE9792 |
then executes:
00007FFF7CAE9792 | 90 | nop |
00007FFF7CAE9793 | 90 | nop |
00007FFF7CAE9794 | 90 | nop |
00007FFF7CAE9795 | E2 F8 | loop test_cases.7FFF7CAE978F |
But that jumps back into the middle of the jump and thus executes:
00007FFF7CAE978F | 23 00 | and eax,dword ptr ds:[rax] |
00007FFF7CAE9791 | E1 90 | loope test_cases.7FFF7CAE9723 |