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汶上信息港
標(biāo)題:
利用SEH進(jìn)入ring0以及單步自跟蹤的實(shí)現(xiàn)
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作者:
hbhdgpyz
時(shí)間:
2008-9-28 16:36
標(biāo)題:
利用SEH進(jìn)入ring0以及單步自跟蹤的實(shí)現(xiàn)
<FONT face=宋體 size=2>一、ring0!并不遙遠(yuǎn)...</FONT>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>作為seh的一個(gè)有趣的應(yīng)用是進(jìn)入ring0,ring0意味著更多的權(quán)利,意味著你可以進(jìn)行一些其他ring3級應(yīng)用程序不能進(jìn)行的操作,譬如改自己的代碼段(在不修改段屬性的前提下),改系統(tǒng)數(shù)據(jù)(病毒?)等等,在9X下進(jìn)入ring0的方法很多,在NT下困難的多,SEH只是其中較簡單的一種.打開調(diào)試器看看系統(tǒng)kernel的工作狀態(tài),在9X下cs一般是28h,ds,ss等通常是30h,因此只要我們的cs和ss等在異常處理程序中被賦予上述ring0選擇子值,進(jìn)入ring0就可以實(shí)現(xiàn).可能我們需要執(zhí)行較復(fù)雜的操作,在ring0下一般不能直接調(diào)用常用api,當(dāng)然VxD,WDM等提供的系統(tǒng)服務(wù)是另外一種選擇. 否則,這在用下述簡單方法進(jìn)入ring0后執(zhí)行會(huì)產(chǎn)生錯(cuò)誤,因此,我們在ring0下盡快完成需要完成的任務(wù),然后迅速返回ring3.</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">在<SPAN lang=EN-US>ring0下要完成如下任務(wù):</SPAN></SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">1.取CR3的值,返回ring3顯示.在ring3下不可以讀取cr3的值.你可以打開kernel調(diào)試器看看例子程序取到的值是否正確.</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">2.修改代碼段后面的jmp ****代碼,這在通常情況下只會(huì)導(dǎo)致保護(hù)錯(cuò)誤.而在ring0下是可以的,就像在前面例子中用she實(shí)現(xiàn)SMC的效果是一樣的,最后顯示幾個(gè)MsgBox,證明我們曾經(jīng)到達(dá)過ring0</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">這個(gè)例子是參考<SPAN lang=EN-US>owl的那個(gè)nasm寫的例子用masm改寫,并增加ring0下SMC的代碼部分以作演示.另外代碼中iretd指令并不是簡單實(shí)現(xiàn)跳轉(zhuǎn),而是實(shí)現(xiàn)從ring0切回ring3的功能,在變換代碼特權(quán)級的同時(shí),堆棧的也要變換到ring3.可能原例子ljtt前輩的中文注釋容易引起初學(xué)者的誤解.</SPAN></SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">別的不說<SPAN lang=EN-US>,我發(fā)現(xiàn)進(jìn)入ring0后修改代碼段可以使trw的跟蹤崩潰...hmmm,好消息?代碼如下:</SPAN></SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">其中用的一些宏在<SPAN lang=EN-US>Ex5中已經(jīng)貼了,就不再重復(fù).</SPAN></SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">;-----------------------------------------</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">;Ex6,演示利用seh進(jìn)入ring0! by Hume,2002</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">;humewen@21cn.com </SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">;hume.longcity.net</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">;-----------------------------------------</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">.586</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">.model flat, stdcall</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">option casemap :none<SPAN style="mso-spacerun: yes"> </SPAN>; case sensitive</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">include hd.h</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">include mac.h</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">;;--------------</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">ring0_xHandler<SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="mso-tab-count: 1"> </SPAN>proto C :DWORD,:DWORD,:DWORD,:DWORD</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>.data</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">szbuf<SPAN style="mso-spacerun: yes"> </SPAN>db 100 dup (0)</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">count<SPAN style="mso-spacerun: yes"> </SPAN>dd 0</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">;;-----------------------------------------</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">.CODE</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">_Start:</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>assume fs:nothing</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="mso-tab-count: 1"> </SPAN>push<SPAN style="mso-spacerun: yes"> </SPAN>offset ring0_xHandler</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>push<SPAN style="mso-spacerun: yes"> </SPAN>fs:[0]</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>fs:[0],esp</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>;--------------------</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>ecx,ds</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>test<SPAN style="mso-spacerun: yes"> </SPAN>ecx,100b</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>jz<SPAN style="mso-spacerun: yes"> </SPAN>NT_2K_XP<SPAN style="mso-spacerun: yes"> </SPAN>;NT/2K/XP has no LDT </SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>pushfd</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>eax,esp</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>int<SPAN style="mso-spacerun: yes"> </SPAN>3</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>ebx,cr3<SPAN style="mso-spacerun: yes"> </SPAN>;現(xiàn)在,正式宣布,進(jìn)入ring0! </SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>;呵呵這樣簡單就進(jìn)入ring0了,至于進(jìn)入</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>push<SPAN style="mso-spacerun: yes"> </SPAN>ebx<SPAN style="mso-spacerun: yes"> </SPAN>;ring0有啥用,不要問我!</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>lea<SPAN style="mso-spacerun: yes"> </SPAN>ebx,offset _modi<SPAN style="mso-spacerun: yes"> </SPAN>;SMC</SPAN></P>
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<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>byte ptr[ebx],75h ;修改jmp addinfo為jnz addinfo指令</SPAN></P>
1 q) F0 }: z' a4 K; C- h
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>pop<SPAN style="mso-spacerun: yes"> </SPAN>ebx</SPAN></P>
& E5 O# n7 o& e k$ {1 c8 t+ s* I3 @
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
. u, n, C% O3 k [7 d
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>push<SPAN style="mso-spacerun: yes"> </SPAN>edx<SPAN style="mso-spacerun: yes"> </SPAN>;ss</SPAN></P>
9 Q: h+ J7 }0 O7 o; h, F
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>push<SPAN style="mso-spacerun: yes"> </SPAN>eax<SPAN style="mso-spacerun: yes"> </SPAN>;esp</SPAN></P>
5 Z6 q" F& H; @! A: ?1 W
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>push<SPAN style="mso-spacerun: yes"> </SPAN>dword ptr[eax]<SPAN style="mso-spacerun: yes"> </SPAN>;eflags<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
9 _6 `$ k$ r" t. T6 h6 y) |
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>push<SPAN style="mso-spacerun: yes"> </SPAN>ecx<SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN>;cs</SPAN></P>
4 L& R4 e! X9 H, t6 Y. W7 [8 g
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>push<SPAN style="mso-spacerun: yes"> </SPAN>offset ring3back<SPAN style="mso-spacerun: yes"> </SPAN>;eip</SPAN></P>
/ `+ c, P- c. } Z
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>iretd<SPAN style="mso-spacerun: yes"> </SPAN>;這里是通過iretd 指令返回特權(quán)級3</SPAN></P>
% p! r5 }( h/ @7 G8 v5 a0 l# N5 t
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
* X. s4 h- }) O: ~" q7 k+ R
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">ring3back:</SPAN></P>
$ w( ]0 {* j4 c
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>popfd</SPAN></P>
) l8 H/ X2 c% e% R8 s7 t6 o
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>invoke<SPAN style="mso-tab-count: 1"> </SPAN>wsprintf,addr szbuf,ddd("It's in ring0,please see CR3==%08X",0dh,oah,"following display Modified info..."),ebx</SPAN></P>
$ [. a- z0 O. |* c
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>invoke<SPAN style="mso-tab-count: 1"> </SPAN>MessageBox,0,addr szbuf,ddd("Ring0! by Hume[AfO]"),40h<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
, {; G; Q% ^& {3 E
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>xor<SPAN style="mso-spacerun: yes"> </SPAN>eax,eax</SPAN></P>
# l7 A& i- p3 Z6 h
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>;add<SPAN style="mso-spacerun: yes"> </SPAN>eax,2</SPAN></P>
0 c+ t2 }7 y% } h: L3 _: X1 g7 d
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>.data</SPAN></P>
: P% v" v; S" D
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>Nosmc db "Not modified area!",0</SPAN></P>
" b1 a; U( C5 D" T
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>besmc db "haha,I am modified by self in ring0!",0</SPAN></P>
4 G7 w% l3 ]& W
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN>.code</SPAN></P>
$ u, A6 e& |1 G9 U! H
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>ebx,offset Nosmc</SPAN></P>
s5 i. z, [0 D) m' U/ t
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>eax,0</SPAN></P>
0 ]/ W6 ^+ V; |
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">_modi:</SPAN></P>
$ x- Q% P" }2 ^/ @! @8 a: N8 Y1 k
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN>jmp<SPAN style="mso-spacerun: yes"> </SPAN>addinfo<SPAN style="mso-spacerun: yes"> </SPAN>;SMC后將這里改為jnz addinfo </SPAN></P>
: u8 ~; ?4 ^7 C4 h* y
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
( E, z8 V$ G. n3 d! ]
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>ebx,offset besmc</SPAN></P>
$ p9 g4 ?1 A$ L$ F1 T
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>eax,30h</SPAN></P>
9 d, \6 q) m" P- ^2 @( t" l5 Y
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">addinfo:</SPAN></P>
: E: z8 W$ ~) X) ^ f: u4 B8 ^. `
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>invoke<SPAN style="mso-tab-count: 1"> </SPAN>MessageBox,0,ebx,ddd("Rin0 SMC test"),eax</SPAN></P>
( ~# D/ ^/ s2 Y$ k$ Q" l. C
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">_exit:</SPAN></P>
2 n9 _2 Z2 b f* n( S
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>;--------------------<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
! |; [" \; h) v: }: G a
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>pop<SPAN style="mso-spacerun: yes"> </SPAN>fs:[0]</SPAN></P>
" O8 ~, ~0 {1 |7 {1 a1 {
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN>add<SPAN style="mso-spacerun: yes"> </SPAN>esp,4</SPAN></P>
6 B0 _9 v: S" p, t* c) G
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>invoke<SPAN style="mso-tab-count: 1"> </SPAN>ExitProcess,0</SPAN></P>
. k/ _2 C0 |7 V
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
B' q& l, w. p4 y4 f# _
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">NT_2K_XP:</SPAN></P>
$ N1 ~ I; f& v4 p8 W3 ]
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>invoke<SPAN style="mso-tab-count: 1"> </SPAN>MessageBox,0,ddd("The example not support NT/2K/Xp,only 9x!"),ddd("By hume"),20h</SPAN></P>
, p2 V' ~; S# X8 l
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>jmp<SPAN style="mso-spacerun: yes"> </SPAN>_exit</SPAN></P>
% Z# X' l# ]1 j# M, n! T, q' G
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">;-----------------------------------------</SPAN></P>
& Z1 T2 d( x8 Z6 ? f
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">ring0_xHandler PROC C pExcept:DWORD,pFrame:DWORD,pContext:DWORD,pDispatch:DWORD</SPAN></P>
4 X8 ^- J: g/ _
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>pushad<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
; n% l1 i9 L7 u/ ^
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">assume<SPAN style="mso-spacerun: yes"> </SPAN>edi:ptr CONTEXT</SPAN></P>
5 b5 D% z) t/ f) g* k: y& @& j
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">assume<SPAN style="mso-spacerun: yes"> </SPAN>esi:ptr EXCEPTION_RECORD</SPAN></P>
6 r" J: |: e1 `$ n* W
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
/ G8 ?- G. l3 O0 z: d8 n- c N, e; p
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>esi,pExcept</SPAN></P>
( G ]" h( [% P6 _: u$ t4 U+ W
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>edi,pContext<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
, _4 a! p# ~5 Y; y7 _2 t' _8 s
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>test<SPAN style="mso-spacerun: yes"> </SPAN>dword ptr[esi+4],1<SPAN style="mso-spacerun: yes"> </SPAN>;Exception flags</SPAN></P>
8 F+ Z$ K/ \, d& L" x. ^! O7 T) V
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>jnz<SPAN style="mso-spacerun: yes"> </SPAN>@f<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
( n, [+ E6 w) M' {0 @; A
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>test<SPAN style="mso-spacerun: yes"> </SPAN>dword ptr[esi+4],6</SPAN></P>
! {3 {( v+ p2 d' I3 s6 b1 R
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>jnz<SPAN style="mso-spacerun: yes"> </SPAN>@f</SPAN></P>
3 f g/ M9 F1 x# t2 D1 a
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>cmp<SPAN style="mso-spacerun: yes"> </SPAN>dword ptr[esi],80000003h<SPAN style="mso-spacerun: yes"> </SPAN>;break ponit flag</SPAN></P>
' v3 k( s, k, J3 I$ F7 _, f0 [! p
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>jnz<SPAN style="mso-spacerun: yes"> </SPAN>@f<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
; `# Q) t) H9 ~4 S; @
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
+ n8 p) A* i! V8 V0 q
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>m2m<SPAN style="mso-spacerun: yes"> </SPAN>[edi].regEcx,[edi].regCs<SPAN style="mso-spacerun: yes"> </SPAN>;保存3級代碼段選擇子</SPAN></P>
: y% |6 B3 [3 V/ N$ `9 g
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN>[edi].regCs,28h<SPAN style="mso-spacerun: yes"> </SPAN>;0級代碼段選擇子</SPAN></P>
- E! e3 a; {0 N% H) Q# e
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
/ j. j1 t! D J( L! k* d" Q6 s
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>m2m<SPAN style="mso-spacerun: yes"> </SPAN>[edi].regEdx,[edi].regSs<SPAN style="mso-spacerun: yes"> </SPAN>;保存3級堆棧段選擇子</SPAN></P>
7 a; Q; e( q( W% ] {6 x
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>[edi].regSs,30h<SPAN style="mso-spacerun: yes"> </SPAN>;0級堆棧選擇子</SPAN></P>
9 ^7 t5 I# L; X/ K- D( y, O
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
- ?& L6 L& j9 ~1 H% H8 U
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>dword ptr[esp+7*4],0</SPAN></P>
6 s" t: ^+ u2 S( A1 H, m# L# g
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>popad<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
, ^2 R3 x1 ^1 V3 Q
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>ret</SPAN></P>
Y7 y- l0 P8 B3 `5 R/ `1 b$ h
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">@@:</SPAN></P>
. q4 X3 S# p7 B% w; A
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN>dword ptr[esp+7*4],1</SPAN></P>
! @, I! }) j4 D; c4 e! `! K; _
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>popad<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
3 s3 i: w9 Y! c$ ?! J6 o
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>ret</SPAN></P>
% U0 w+ Q8 p0 L- U! A& U
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">ring0_xHandler ENDP</SPAN></P>
2 c/ h+ o1 a) D; I3 c) h. M# s @
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">;-----------------------------------------</SPAN></P>
" X9 E( k8 k# c$ x1 I
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt">END<SPAN style="mso-tab-count: 1"> </SPAN>_Start</SPAN></P>
6 e E! ?" R9 P) i' |( y; J
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"></SPAN> </P>
& `" g4 W& J }; d/ D
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>由于在NT/2K/XP下這種進(jìn)入ring0的方法不能使用,所以首先區(qū)別系統(tǒng)版本,如果是NT/2K/XP則拒絕執(zhí)行, 原理是在NT/2K/XP下沒有LDT,因此測試選擇子是否指向LDT,這是一種簡單的方法,但不推薦使用, 最好使用GetVersionEx...至于</SPAN></P>
9 m3 }' Q$ h1 z- \- [5 A
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>mov<SPAN style="mso-spacerun: yes"> </SPAN>dword ptr[esp+7*4],0</SPAN></P>
' ~ E- Z, c l, n
<P class=MsoNormal style="LAYOUT-GRID-MODE: char; TEXT-INDENT: 20pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.0pt"><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>popad<SPAN style="mso-spacerun: yes"> </SPAN></SPAN></P>
. ^9 L: {; U u2 s
<P class=MsoNormal><SPAN lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 宋體; mso-bidi-font-size: 12.0pt"><SPAN style="mso-spacerun: yes"> </SPAN>是返回eax=1的實(shí)現(xiàn)</SPAN></P>
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