mirror of
https://github.com/sslab-gatech/winnie
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stong
29 lines
695 B
NASM
29 lines
695 B
NASM
include ksamd64.inc
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EXTERNDEF __imp_RtlCaptureContext:QWORD
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extern harness_main:proc
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extern report_end:QWORD
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extern savedContext:QWORD
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.code
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FuzzingHarness PROC
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add rsp, 8 ; discard return address
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push qword ptr [report_end] ; new retaddr
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push rcx ; preserve rcx
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lea rcx, qword ptr [savedContext]
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call __imp_RtlCaptureContext
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pop [rcx+CxRcx] ; 0x80 = offset of rcx
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lea rax, [rsp] ; calculate original rsp
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mov [rcx+CxRsp], rax ; 0x98 = offset of rsp
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sub rsp, 1020h ; allocate a ton of space on the stack incl. shadow space
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jmp harness_main
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FuzzingHarness ENDP
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end
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