菜鳥也玩shellcode（菜鳥也玩shellcode）

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1、菜鳥也玩shellcode（菜鳥也玩shellcode）[original]rookietoplayshellcodeArticletitle:[original]shellcodetoprookiealsoreleasedthemostlonelyinvincible:2004-12-2808:15landlord[[original]rookieplayingshellcodeArticleauthor:Invinciblemostlonely[EST]Source:Eviloctalinformationsecurityteam

2、Source:hackerXFilesXfileonthepreviousperiod,Iwrotearookie,butalsotowriteexploit,whichdescribesthelocationoftheoverflowpoint,aswellasthepreparationofexploit.It'sallarookiething,andIdon'tknowifmyreadershavelearnedsomething.ThistimeIhavebroughtyouanoverflowofarticles,mainl

3、yforeveryonetointroducesomerookielevelshellcodeprepared.Asweallknow,thepreparationofshellcodeisneedalotofprogrammingskillsbutalsofamiliarwiththeunderlyingoperatingsystemknowledge,sowestillhavetouseotherstowriteshellcode(don'thitme,youseemytitle:"play"insteadof"writing")

4、.Inotherwords,wearetryingtotransformanexpertintogoodwritingandshellcodetobehisownstuff.ManualarticlesFirstofall,wehavetoprepareour"maincourse"-shellcode.Ifoundacoupleofshellcodeonmetasploit.com.Lookattheonebelow:[BITS32]Global_start_start:LCaller:CallLLoadFunctionsLData

5、Segment:Economy;DD"CMD""Dd0x79c679e7;closesocket12Dd0xe5;accept16Dd0xe92eada4;listen20Dd0xc7701aa4;bind24Dd0xadf509d9;WSASocketA28Dd0x3bfcedcb;WSAStartup32.......LBind:PushediPushediPushdword0x;port8721Movesi,ESPPushbyte0x10;lengthPushesiPushebxCall[ebp+24].......Ijustl

6、istedsomeofthekeycode,completecode,seethecd.Thisisacompilationofthebindshell,whichcanbindacmdshelltoanylocalport.Allwehavetodoistowritetheabovecodeinshellcodeform.ThefirstmosquitoIthatlieKoustrawindustryushdword0x;port8721Thisistheboundport,forexample,wewanttobind1234po

7、rts,thenthefirst1234tosixteendecimalis04d2,andtheninaccordancewiththelow,thenthetop,intheorderofthelatterisd204.Changetotheoriginalsentence,thenbecome:Pushdword0xdOK!Thecodeischanged.Weneedtocompilethiscodeintoabinaryfile.ThecompilerIusehereisnasm.Savetheabovecodeasbind

8、shell.asmandcopythisfiletothebinsubdirectoryundertheNASMdecompressiondirectory.ThenopenaCMDwindow,andcometothe